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51Back to top Go down    Re: Things that BMW put there to annoy me on Sun Apr 14, 2013 1:09 am

charlie99


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i think the injection kill is nothing but a promised effort on behalf of all the manufacturers trying to get aproval for clean air emmissions in electronic motors way back then .....

if things are fitted up right (read inlet manifold leaks and injectors etc ) there is little backfiring at all to be noticed ...and i would add that the power returns in a smoother fashion than going from a completly leaned out engine cylinder ...and on the power again due to overshoot of the throttle control ( i predict less fuel is used during this process of continuous charge process )

i imagine that it all falls in a heap once you extend the engine braking down a long continuous hill for which i believe the feature was installed ...i would have loved to see some interaction of the speedo pulse counter involved in the kill injection process ie count 300 before turning off if no throttle is open ....personally i only know of just a few locations where this would happen in at least 600 ks from my place .most if not all bring you back on throttle durring the descent ..or is that the way i ride anyhow ?

crikey the old bmw is still squirting fuel three times before the inlet valve opens again durring normal running ...but it works ...

i think there is enough anecdotal evidence on here and other forums and places that prove that this process has little effect on the running or longetivity of our old girls and their performance .

try it ,,,if you dont like it ...put it back

for me ....i love it ...it certainly has smoothed off the performace of hills and twistys with far less dramatic change in bike balence fore and aft durring critical line setups in and around corners . and cetainly looks after the transmission and wear on tyres due to such changes ...especially round town .

    

52Back to top Go down    I understand on Sun Apr 14, 2013 1:26 am

ibjman

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Charlie,
I see your point - Clearly.
I was taking exception in general with the idea of just disconnecting all kinds of stuff for the main reason of "it doesn't do anything, anyway.
Would you concur with my idea that the best way around the symptom (if you can't live with it) is simply to "un-adjust" the switch slightly so it can't quite close at the lowest throttle opening, hence preserving it's other function at WOT?
I imagine that my other argument about reduced emissions is a weak one but it still bears consideration.
Regards, ibj...

    

53Back to top Go down    Re: Things that BMW put there to annoy me on Sun Apr 14, 2013 2:32 am

charlie99

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for many folks ibj the mod would be completely unnoticeable if they only have for say, highway access or those long roads with little ..what i would call excitement ..... hey !.... were all different in some way

im a "hills whore" so notice the the difference ...and glad i found a post in one of the old bmw usa forums thingys confirmed in here by a few of the gurus ...ned ..ajays etc

between that and a fresh bunch of tyres i had to relearn all the bad things i picked up with a stuttering backoff and verry poor dunlop (ancient technology) tyres

happily i have now after 40,000 + kilometers in a little over 2 years ...what i call... a well balenced "old mans bike " capable of huge distances ...and a real quick blast up in the hills . the old girl sings and can spin on a penny . and that helps a lot . subjective yes ,,,enjoyable ...absolutley .

and yes the adjust principle is an easily implemented aproach..... one that i confirmed - a couple of years ago


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

54Back to top Go down    I think I might on Sun Apr 14, 2013 12:26 pm

ibjman

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I might just do that with mine. Since I have the fairings off right now.
Just have to move the adjustment on the TPS a tiny scoach.......so it can't quite switch on at the bottom end.

    

55Back to top Go down    Re: Things that BMW put there to annoy me on Sun Apr 14, 2013 8:56 pm

Ned

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@ibjman wrote:I might just do that with mine. Since I have the fairings off right now.
Just have to move the adjustment on the TPS a tiny scoach.......so it can't quite switch on at the bottom end.

I think that test-and-see approach is the best way to deal with issues like these. As I ride a naked bike unplugging the thing was the best way to test if it was worth going through the process of micro adjustment. I kept it unplugged for a few tank loads to make sure.

@Charlie: Yes I think that you are correct about the pollution control angle. In this case the early analogue EFI system just didn't have way to easily deal with fuel control. I note that once "computerised systems" were introduced all of that was junked in favour of sensors that provided information required by the CPU to provide provide fine control of FIs.

When I got my bike, the first thing I did was to replace all the rubber components and seal all air and vacuum leaks, test the fuel injectors and fuel pressure. After doing that and after tuning TBs I was still left with a problem of not being able to take hairpin bends and small round about turns smoothly. That brought me to investigate and making sense of the TPS control, ie disconnect it.

Armed with the memory of a super smooth Honda CX500 (shaft drive) and disconnected TPS I was well pleased with the bike performance. After that I simply "tuned it out" to keep the full throttle function as described above. SmileSmile

This works for me because I do a lot of riding along our coastal roads and national parks. These are tight and twisty roads there smooth bike is appreciated. Once on the highway and high speed corners this mod has absolutely no effect and for folks who spend a lot of time riding at high speed this mod is a waste of time.


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Ned

05/1986 (K55) K100RS Motorsport (Europe), Production Code: 0503, 110k km, VIN:0140519 (SOLD)
1976 Honda Goldwing GL1000 (naked)
1997 BMW K1200RS red, VIN: WB10544A1VZA22667
    

56Back to top Go down    Well, at the risk of...... on Sun Apr 14, 2013 10:00 pm

ibjman

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Well, OK...I really feel validated, that someone liked my idea of readjusting rather than disconnecting. THANKS
Now.....since I haven't "re-diddled" mine yet.......Maybe I'll over engineer this a bit more.....just to see what results.
What would happen if......I insert a relay in the wire from the "closed throttle" side of the TPS. The relay makes & breaks the signal feed to the EFI computer from the TBS.
Connect the trigger wire for the relay to the rear brake light switch circuit. (Let's disregard for the moment, the effect it might have on the bulb check relay function, I'm sure we can figure a way around that).
In this scenario, an additional parameter has been added to the fuel off switching.
3 conditions must all be present:
#1 Throttle completely closed, #2 Engine RPM above 1500 & #3 rear brake is applied.
If I'm seeing this right....it would aid braking slightly while still eliminating the throttle lurch (assuming, you "twisty guys aren't modulating the throttle while the brake is applied).
What think.....Guru's??

    

57Back to top Go down    Re: Things that BMW put there to annoy me on Sun Apr 14, 2013 10:29 pm

charlie99

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still too much lag im afraid ibj .....
the problem is after cuttoff it takes a little while for the cylinders to recharge and power to come on ...remember the throttle overshoot by the rider waiting for the power to come on ?
but it could be a little better perhaps
just an opinion


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

58Back to top Go down    Probably correct on Mon Apr 15, 2013 1:27 am

ibjman

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I think you have a good point......still after some experience in this config.....the driver might naturally adjust to lifting the brake slightly before he wants throttle????
I think I'll probably shelve the idea...it was only a what if.

Thanks for all the ideas

    

59Back to top Go down    Re: Things that BMW put there to annoy me on Mon Apr 15, 2013 2:10 am

andyb

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Sorry all if I've re opened a can of worms!
I've found it beneficial so far, none of the jerks associated with on off throttling and also I dont get that momentary surge as you are slowling down to stop as the injectors come on again, which usually made me have to adjust breaking at the last minute just prior to stopping, all is much more fluid. Will try the anti clockwise adjustment of the TPS and see how that goes. Then at least its all still connected.

cheers


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AndyB
'03 K1200GT,

'88 K100 RT
Chassis number: 0097248 ; Vehicle code: 0504; Series: K589
Model: K100RT 84 (0504 (0505) Body Type: K100RT 84 (0504)
Catalog Model: ECE; Engine: (0504); Production: 1988/9
    

60Back to top Go down    Re: Things that BMW put there to annoy me on Mon Apr 15, 2013 2:19 am

charlie99

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good one andy... go for it ...it works well mate


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

61Back to top Go down    Re: Things that BMW put there to annoy me on Mon Apr 15, 2013 2:28 am

Ned

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@andyb wrote:Sorry all if I've re opened a can of worms!...

cheers

Not at all Andy. It is always good to open these old threads and pass on good experiences people have had with tips and ideas.


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Ned

05/1986 (K55) K100RS Motorsport (Europe), Production Code: 0503, 110k km, VIN:0140519 (SOLD)
1976 Honda Goldwing GL1000 (naked)
1997 BMW K1200RS red, VIN: WB10544A1VZA22667
    

62Back to top Go down    Re: Things that BMW put there to annoy me on Mon Apr 15, 2013 3:04 am

Ajays

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TPS Not your idea ibjman. Look earlier and you will see Ajays had been all through this and suggested just that. Reset low to cut out the first switch rather than disconnect which causes backfires.Very Happy


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63Back to top Go down    Re: Things that BMW put there to annoy me on Mon Apr 15, 2013 5:19 am

charlie99

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aye ..! indeed ajays ...many thanks .

i hope i have passed on your wisdom well enough .


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

64Back to top Go down    Thanks AJAYS on Mon Apr 15, 2013 1:29 pm

ibjman

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Ok, AJAYS.......I stand humbly corrected. As you know it's hard to remember all the 1000's of previous posts about any specific topic. If I could do that my name would be Inge?
At any rate it appears that I am not the only one who had failed to remember or not completely read your idea, so IMO it was beneficial for me to re-state it......Very Happy.
Thanks for raining on my parade!......LOL

    

65Back to top Go down    Re: Things that BMW put there to annoy me on Wed Jul 17, 2013 8:51 am

Corkboy

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To dig up the thread again.

I came across this last week, and after reading through it, decided that it made a lot of sense.  

So, I then went out and adjusted the TPS to deactivate that low switch. Took all of 10 mins.

What can I say, the bike behaves like a "normal" bike again! No more low speed jerkyness, and a big difference in gear changes, especially 1st and 2nd.

Most of my riding is in town/twisty corners, and as others have said, the on/off of the fule injection shut off was a pain.  You do work around it, but now, since I also ride a transalp, it is more noticable.

This has been one of the better mods I've performed (this, and advancing the timing to 30 btc Smile).

On a side note, I went for a spin yesterday on our back roads. Man, this bike is fun.  Keep it above 4k revs, and closer to 6k and (with a remus race can) it really sings. I keep thinking of selling it when I get a K1200LT next year, as I have the transalp for one-up and will have the K1200LT for two up touring. But I know I cant sell it. It scratches an itch that neither of the other two can do.

Looks like I'll just have to extend the garage.


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Regards,

Corkboy '87 K100RS SE (The black one - one of the two bikes I'm sorry I sold)
             '87 K100RS 0140995 (Gone)
             '97 K1100LT 0188024 (Gone)
             '08 K1200GT Wedge - but still a K
             '08 Transalp 700
    

66Back to top Go down    Re: Things that BMW put there to annoy me on Wed Jul 17, 2013 2:39 pm

Beemer Wheeler

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Thanks guys !
Great mod.
I just unplugged the TPS and it runs smoother, no more "hiccups" while slow cornering.
I will install a switch on the wire of the throttle closed switch, so I can turn it on for long downhills.
The K is tamed now, doing what the throttle says, not interpreting informations, calculating how to improve my riding style for better fuel efficiency, environmental impact, or whatever else.
Just a plain obedient machine. Smile


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1986 K 100 RT "K-T" short for "Katie" 117.000 Km
    
2012 Yamaha YFL 381 (Flute)
2005 Yamaha PSR E-203 (Keyboard Synth).
2012 Yamaha 7 HP outboard engine
"Beemer Wheeler" Certified Brick Aviator since July 2013
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http://h2fuel.mobi
    

67Back to top Go down    Re: Things that BMW put there to annoy me on Wed Jul 17, 2013 9:24 pm

Ned

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@Corkboy wrote:To dig up the thread again.

... I keep thinking of selling it when I get a K1200LT next year, as I have the transalp for one-up and will have the K1200LT for two up touring. But I know I cant sell it. It scratches an itch that neither of the other two can do.

Looks like I'll just have to extend the garage.

Funny you should say that. I did just that, bought a 1200RS and enjoying the power and smoothness of the beast, but prefer to ride my K100RS. Yes, the TPS has been disconnected years ago precisely for all the reasons you describe and since then I've been reluctant to part with it despite the 1200 which i prefer to take for longer rides.


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I reserve the right to voice my opinions on any subject known to man
Ned

05/1986 (K55) K100RS Motorsport (Europe), Production Code: 0503, 110k km, VIN:0140519 (SOLD)
1976 Honda Goldwing GL1000 (naked)
1997 BMW K1200RS red, VIN: WB10544A1VZA22667
    

68Back to top Go down    Re: Things that BMW put there to annoy me on Thu Jul 18, 2013 8:02 am

K75cster

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Ned having just re-read this i was wondering if you still had the vac hose Disconnected?? it was mentioned earlier and no effort to clear up teh micro difference it would make. Is it true that adjusting the map flap resistence would counter the pressure increase? I also was looking for a little clarity on the deceleration fuel use, as to my mind the throttle being at almost closed or indeed idle the only fuel that could be burnt was the same fuel that idle produced or does the rpm dictate the fuel micro spurt be increased to suit even on deceleration with the tps closed. Sorry gents but thinking caps back on please


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

69Back to top Go down    Re: Things that BMW put there to annoy me on Thu Jul 18, 2013 8:58 pm

Beemer Wheeler

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Closed Throttle signal disabled.
I've just cut the Black/White wire.
Will fit a switch later.
Runs great and smoother.
Never again !  Thanks but, no thanks.
Easiest "mod" ever, nothing to take apart.


__________________________________________________
1986 K 100 RT "K-T" short for "Katie" 117.000 Km
    
2012 Yamaha YFL 381 (Flute)
2005 Yamaha PSR E-203 (Keyboard Synth).
2012 Yamaha 7 HP outboard engine
"Beemer Wheeler" Certified Brick Aviator since July 2013
Ham radio call sign ON7BAS
http://h2fuel.mobi
    

70Back to top Go down    Re: Things that BMW put there to annoy me on Thu Jul 18, 2013 9:09 pm

Ned

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@K75cster wrote:Ned having just re-read this i was wondering if you still had the vac hose Disconnected?? it was mentioned earlier and no effort to clear up teh micro difference it would make. Is it true that adjusting the map flap resistence would counter the pressure increase? I also was looking for a little clarity on the deceleration fuel use, as to my mind the throttle being at almost closed or indeed idle the only fuel that could be burnt was the same fuel that idle produced or does the rpm dictate the fuel micro spurt be increased to suit even on deceleration with the tps closed. Sorry gents but thinking caps back on please

1. Yes, I've disconnected the vacuum hose to pressure regulator a long time ago. My fuel pressure sits at 36 psi and I've not noticed any difference in fuel consumption.

2. I've seen people play with the flap sensor, but I had an impression they did this to adjust the mixture or to move away from a warn out sliding connector spot. I didn't play with that because the bike idles just fine and has no flat spots on take off. So, no real idea what effects it has on performance.

3. On deceleration ?  I ride often up and down the Macquarie Pass and coast escarpments as well as National Park and suburbs. I have no problems with backfire provided I wind off the throttle completely. In other words you are in control of this.

I think that effects on performance and fuel consumption by disconnect of TPS and Vacuum hose is of secondary importance. I haven't been able to measure fuel consumption differences.

TPS disconnect (or adjustment) improves things for technical riding and absolutely no effect on highway cruising. I think that most of us are clear on this.

Vacuum? ...well for me, disconnecting it simply decreased micro vibrations and made things smoother. Otherwise no effect.


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I reserve the right to voice my opinions on any subject known to man
Ned

05/1986 (K55) K100RS Motorsport (Europe), Production Code: 0503, 110k km, VIN:0140519 (SOLD)
1976 Honda Goldwing GL1000 (naked)
1997 BMW K1200RS red, VIN: WB10544A1VZA22667
    

71Back to top Go down    Things that BMW put there to annoy me on Thu Jul 18, 2013 10:31 pm

ironbutt

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Hey Ya'll, Gotta say I got so engrossed in this thread I lost track of who reopened it but who ever did, my wife thanks you because the one thing she dislikes about the K100rs is knocking helmets and sliding forward on the seat...though I have no objection to the latter...and I thank you because riding the Blue Ridge Parkway here in Virginia the road is loaded with VERY tight turns and the herky jerky motion just can ruin a nice tight curve...on the road that is. I do like Beemers idea of a switch to utilize the engine brake on steep down grades. And a big thumbs up for revisiting an old thread like this cuz there is so much good info on this forum that we newbies can't always dig it up fast enough. I'm looking forward to trying this out as soon as I get her back on the road. Oh and for this HVAC guy what the heck does TPS stand for. I just lucked out that someone put a pic up so I know which thingamajig to fiddle with.

Look for ya on the road !


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85 K100rs WB 1051307F0040102
2010 Camaro SS
    

72Back to top Go down    Re: Things that BMW put there to annoy me on Thu Jul 18, 2013 11:05 pm

RicK G

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Throttle Position Sensor/Switch


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

73Back to top Go down    Re: Things that BMW put there to annoy me on Thu Jul 18, 2013 11:09 pm

Beemer Wheeler

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@ironbutt wrote:  Oh and for this HVAC guy what the heck does TPS stand for. I just lucked out that someone put a pic up so I know which thingamajig to fiddle with.

Look for ya on the road !

Throttle Position Switch(es).

It only takes one minute and some cutters to neutralize all that immoral (helmets) banging.

If the banging gets too hot, see my new HVAC thread here :

http://www.k100-forum.com/t6316-for-a-cooler-summer#72127


__________________________________________________
1986 K 100 RT "K-T" short for "Katie" 117.000 Km
    
2012 Yamaha YFL 381 (Flute)
2005 Yamaha PSR E-203 (Keyboard Synth).
2012 Yamaha 7 HP outboard engine
"Beemer Wheeler" Certified Brick Aviator since July 2013
Ham radio call sign ON7BAS
http://h2fuel.mobi
    

74Back to top Go down    Re: Things that BMW put there to annoy me on Fri Jul 19, 2013 7:47 am

K75cster

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Thanks Ned anyone doing Maquarie pass without issue is sure got the goods on fuel management, I'll be sure to bring a seegar with me when my scoot is up and running, Owe Rossco my half of the bargin from earlier this year so to meet you two would kill two birds with the one stone, or is that get you two birds stoned oh no cant be right, the policeman will be watchin me now.


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

75Back to top Go down    Re: Things that BMW put there to annoy me on Sun Jul 21, 2013 8:33 pm

Ned

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@K75cster wrote:Thanks Ned anyone doing Maquarie pass without issue is sure got the goods on fuel management, I'll be sure to bring a seegar with me when my scoot is up and running, Owe Rossco my half of the bargin from  earlier this year so to meet you two would kill two birds with the one stone, or is that get you two birds stoned oh no cant be right, the policeman will be watchin me now.

 Keith,
The best thing to do is to convince your self with your own experiments doing the things you normally do. My suggestion is to simply disconnect the plug for a tank load or two and check the consumption and effects. Take one variable at a time.. ie. TPS first then the vac house with TPS then back to standard. You will without doubt form an opinion very quickly.

One seegar and two beers is about my limit SmileSmile Yes, we should meet somwhere half way, but you have to give me a week or two.

Dropped my Goldwing and managed to bruise and crack a rib or so. No damage to the bike so I am happy about that, but the down side is NO RIDING for a a little time as bumps give me a few problems. Oh well


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I reserve the right to voice my opinions on any subject known to man
Ned

05/1986 (K55) K100RS Motorsport (Europe), Production Code: 0503, 110k km, VIN:0140519 (SOLD)
1976 Honda Goldwing GL1000 (naked)
1997 BMW K1200RS red, VIN: WB10544A1VZA22667
    

76Back to top Go down    Re: Things that BMW put there to annoy me on Mon Jul 22, 2013 8:18 am

Beemer Wheeler

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How could the 2 preceding owners ride for 27 years with that closed throttle aberration ?
That is beyond my understanding.
There is NO WAY you could get me to turn it back on.
Except occasionally coasting down long hills, at the flip of a switch.

I' wouldn't reset the timing back to standard 6° BTDC either.


__________________________________________________
1986 K 100 RT "K-T" short for "Katie" 117.000 Km
    
2012 Yamaha YFL 381 (Flute)
2005 Yamaha PSR E-203 (Keyboard Synth).
2012 Yamaha 7 HP outboard engine
"Beemer Wheeler" Certified Brick Aviator since July 2013
Ham radio call sign ON7BAS
http://h2fuel.mobi
    

77Back to top Go down    Re: Things that BMW put there to annoy me on Mon Jul 22, 2013 8:38 am

keefk1100lt

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I've been following this post with some interest! My K1100LT is very sensitive to throttle openings at low revs and does ride more than a little jerkily in low gears and at low revs.

But the settings for the TPS are different to the K100's etc. From memory, you connect a multimeter to pins 1 & 4 of the TPS and set it at, I think, 0.370v or close to.

But has anybody any idea as the the setting to smooth out that low speed jerkiness???

Disconnecting the TPS entirely allows the engine to start but makes no difference to the rideability. bounce

    

78Back to top Go down    Re: Things that BMW put there to annoy me on Mon Jul 22, 2013 8:45 am

RicK G

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Well Keef if you figure a way to do it do tell me and all the other K1100 riders as we would like to know.
The K1100 do delay the cutting in of the fuel cutout by anbout 1.5 seconds which does help but not solve the problem.
I have a fuel computer on my K1100 and it reads the injector pulses so when it reads 000 it means the injectors have been cut.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

79Back to top Go down    Re: Things that BMW put there to annoy me on Mon Jul 22, 2013 9:00 am

keefk1100lt

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So it seems to be one of those "they all do that, Guv" style of thing then? Bu66er.

The best I can do, at the moment, is to ride with the cold start lever slightly open, raising the idle speed to just a little over 1k. It makes gearchanging smoother and low throttle riding better. But it's not really a full solution!

If I can find a "proper" way of doing it, I'll let you know Laughing

    

80Back to top Go down    Re: Things that BMW put there to annoy me on Mon Jul 22, 2013 10:11 am

Beemer Wheeler

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@RicK G wrote:
The K1100 do delay the cutting in of the fuel cutout by anbout 1.5 seconds which does help but not solve the problem.

 Great !
Like some automatic unwanted extra braking ?   Rolling Eyes


__________________________________________________
1986 K 100 RT "K-T" short for "Katie" 117.000 Km
    
2012 Yamaha YFL 381 (Flute)
2005 Yamaha PSR E-203 (Keyboard Synth).
2012 Yamaha 7 HP outboard engine
"Beemer Wheeler" Certified Brick Aviator since July 2013
Ham radio call sign ON7BAS
http://h2fuel.mobi
    

81Back to top Go down    Re: Things that BMW put there to annoy me on Mon Jul 22, 2013 10:16 am

Beemer Wheeler

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To think that when I test rode it, and brought her home I attributed the jerkyness to the fact that I stopped riding for 23 years.  :cyclops:


__________________________________________________
1986 K 100 RT "K-T" short for "Katie" 117.000 Km
    
2012 Yamaha YFL 381 (Flute)
2005 Yamaha PSR E-203 (Keyboard Synth).
2012 Yamaha 7 HP outboard engine
"Beemer Wheeler" Certified Brick Aviator since July 2013
Ham radio call sign ON7BAS
http://h2fuel.mobi
    

82Back to top Go down    Re: Things that BMW put there to annoy me on Mon Jul 22, 2013 11:19 pm

K75cster

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Ned Sorry to hear of your damaged pride, glad the wing is OK though. I rode with one finger on the brake lever and naturally got in the habit of holding the throttle at about 1mm off closed sometimes more depending on the need and the bumps i was dealing with. When the 75 is back up and running I will have a go at the tps trial and the vacuem trial.

  KeefK1100 you could consider a modified throttle to camramp the just off idle action of your throttle. s its a round profile that the throttle chain travels around one could change that to allow a slower responce first then normal operation from 1/4 throttle onwards, thats if the 1100's are the same as the 100;s


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

83Back to top Go down    Re: Things that BMW put there to annoy me on Tue Jul 23, 2013 12:25 am

RicK G

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The K1100 throttle is much more conventional than the K100 and airheads. I doesn't have the gear drive and chain which dows make for a better throttle to use.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

84Back to top Go down    Re: Things that BMW put there to annoy me on Tue Jul 23, 2013 2:22 am

Ned

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@K75cster wrote:Ned Sorry to hear of your damaged pride, glad the wing is OK though...

...I rode with one finger on the brake lever and naturally got in the habit of holding the throttle at about 1mm off closed sometimes more depending on the need and the bumps i was dealing with. When the 75 is back up and running I will have a go at the tps trial and the vacuem trial...

 Thanks mate... it was both embarrassing and bruising but the old girl got away with nothing more than a scrape on the tappet cover bolt.

I do the same and never really close the throttle fully. I also use the same technique with one or two fingers on the brake lever and I tend to ride by using the gears and when i need more engine drag, I simply go down a gear or so. I guess that this is an old habit that comes from riding sports and dirt bikes.


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Ned

05/1986 (K55) K100RS Motorsport (Europe), Production Code: 0503, 110k km, VIN:0140519 (SOLD)
1976 Honda Goldwing GL1000 (naked)
1997 BMW K1200RS red, VIN: WB10544A1VZA22667
    

85Back to top Go down    Re: Things that BMW put there to annoy me on Fri Jul 26, 2013 5:37 pm

K-BIKE


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Bad luck Ned glad you are relatively OK and bike is good. I still miss my Wing. Strangely enough I was talking to a very good friend last weekend who had cracked a few ribs falling off a kerb of all things. His daughter is a doctor and she said take lots of painkiller to suppress the pain and try to cough often. The problem she said is because it is painful to cough we suppress that and the risk of pneumonia skyrockets.
Regards,
K-BIKE

    

86Back to top Go down    Re: Things that BMW put there to annoy me on Sun Jul 28, 2013 8:59 pm

Ned

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@K-BIKE wrote:Bad luck Ned glad you are relatively OK and bike is good. I still miss my Wing. Strangely enough I was talking to a very good friend last weekend who had cracked a few ribs falling off a kerb of all things. His daughter is a doctor and she said take lots of painkiller to suppress the pain and try to cough often. The problem she said is because it is painful to cough we suppress that and the risk of pneumonia skyrockets.
Regards,
K-BIKE

 Hi,
Thanks K-Bike :)Yes, she is sooooooooo right about the pain thing. Even now I try to supress coughs and sneezes because the pain is nothing like I felt before and I did brake a few things in the past Smile

Yes, I do see what she means about no clearing the lungs thing. Thanks for that as I didn't really think about this problem in those terms. It is definitely a good piece of advice.

I am getting much better and mobile. Thought about a ride on the weekend but needed to attend to the carbs I got for the Wing. This week will see me return to the gym for light workouts and maybe the next weekend will be the first ride back, on the K100 this time.

Live and learn Smile


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I reserve the right to voice my opinions on any subject known to man
Ned

05/1986 (K55) K100RS Motorsport (Europe), Production Code: 0503, 110k km, VIN:0140519 (SOLD)
1976 Honda Goldwing GL1000 (naked)
1997 BMW K1200RS red, VIN: WB10544A1VZA22667
    

87Back to top Go down    Re: Things that BMW put there to annoy me on Sat Aug 03, 2013 2:39 am

Jim Miller

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@Beemer Wheeler wrote:Thanks guys !
Great mod.
I just unplugged the TPS and it runs smoother, no more "hiccups" while slow cornering.
I will install a switch on the wire of the throttle closed switch, so I can turn it on for long downhills.
The K is tamed now, doing what the throttle says, not interpreting informations, calculating how to improve my riding style for better fuel efficiency, environmental impact, or whatever else.
Just a plain obedient machine.  Smile

 ahhh...now that makes sense...I live in the mountains and do a lot of high speed...a lot of big long downhill grades,,and a lot of twisties...

Did you install the switch on the 'throttle closed switch' wire??


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1987 K75s  and 1979 Moto Guzzi 1000sp
    

88Back to top Go down    Re: Things that BMW put there to annoy me on Sat Aug 03, 2013 2:42 am

Jim Miller

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@Ned wrote:
@K75cster wrote:Thanks Ned anyone doing Maquarie pass without issue is sure got the goods on fuel management, I'll be sure to bring a seegar with me when my scoot is up and running, Owe Rossco my half of the bargin from  earlier this year so to meet you two would kill two birds with the one stone, or is that get you two birds stoned oh no cant be right, the policeman will be watchin me now.

 Keith,
The best thing to do is to convince your self with your own experiments doing the things you normally do. My suggestion is to simply disconnect the plug for a tank load or two and check the consumption and effects. Take one variable at a time.. ie. TPS first then the vac house with TPS then back to standard. You will without doubt form an opinion very quickly.

One seegar and two beers is about my limit SmileSmile Yes, we should meet somwhere half way, but you have to give me a week or two.

Dropped my Goldwing and managed to bruise and crack a rib or so. No damage to the bike so I am happy about that, but the down side is NO RIDING for a a little time as bumps give me a few problems. Oh well

 Ouch..cracked a couple ribs skiing this winter..sucked big time!!just take it easy/


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1987 K75s  and 1979 Moto Guzzi 1000sp
    

89Back to top Go down    Re: Things that BMW put there to annoy me on Sat Aug 03, 2013 8:51 am

Beemer Wheeler

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Jim, I will insert the switch on the closed throttle wire, for the time being, spending the holidays on the Belgian coast, and riding on flat polders and Holland back roads, I do not coast downhill at all  Wink
Runs just fine, went from Zeebrugge to Terneuzen (seegars) and back via Sas van Ghent, 150 Km.


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1986 K 100 RT "K-T" short for "Katie" 117.000 Km
    
2012 Yamaha YFL 381 (Flute)
2005 Yamaha PSR E-203 (Keyboard Synth).
2012 Yamaha 7 HP outboard engine
"Beemer Wheeler" Certified Brick Aviator since July 2013
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90Back to top Go down    Re: Things that BMW put there to annoy me on Sat May 31, 2014 4:56 pm

Tenox

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@charlie99 wrote:hi nino ....this could be an issue to turn it too far


What would it do if it would be turned too far? I mean how would the bike behave?

I just did that adjustment today on my bike. Tried to do it so that it would not go too far, but how can you really tell? It is not fully twisted and it does not click anymore at throttle off. Then again it does not click full throttle either, but it did not do that before adjustments.

On my older bike TPS is not functional and it runs very smooth from very low rpms (5th gear 40km/h). But that bike has some kind of operation done to the engine channels (do not know the words in english).

My current bike suffers from twitching under 2500rpm and TPS adjustment maybe did improve it a bit, but not all.


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91Back to top Go down    Re: Things that BMW put there to annoy me on Sat May 31, 2014 5:10 pm

Inge K.

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@Tenox wrote: Then again it does not click full throttle either, but it did not do that before adjustments.

They don't click at WOT, it's a different kind of switch.


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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

92Back to top Go down    Re: Things that BMW put there to annoy me on Sat May 31, 2014 7:21 pm

ReneZ

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Quite an interesting read as I have gotten used to the 'engine braking' at the TPS allows for and use it a lot. I like the shifting down and braking on the engine before entering a curve and the roll the throttle open and accelerate out of the curve.

With regards to the reason it was fitted I don't think the environment was a concern at that time (development late seventies), I think it was for fuel consumption management reasons. Don't forget that we had some difficult periods in Western Europe around that time, where they prohibit using cars etc on certain weekends/Sundays because on fuel capacity/price concerns. That learned everybody that a more frugal engine was desirable. (probably showing my grey hairs here :-)).


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Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029)
BMW K1200GT - 2003 (ZK01223)
    

93Back to top Go down    Re: Things that BMW put there to annoy me on Sat May 31, 2014 8:26 pm

Inge K.

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@ReneZ wrote:Quite an interesting read as I have gotten used to the 'engine braking' at the TPS allows for and use it a lot. I like the shifting down and braking on the engine before entering a curve and the roll the throttle open and accelerate out of the curve.

  .


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94Back to top Go down    Re: Things that BMW put there to annoy me on Sat May 31, 2014 8:43 pm

blaKey

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"Quite an interesting read as I have gotten used to the 'engine braking' at the TPS allows for and use it a lot. I like the shifting down and braking on the engine before entering a curve and the roll the throttle open and accelerate out of the curve."

   


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Neil
K100RS 1986 RED!
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95Back to top Go down    Re: Things that BMW put there to annoy me on Sun Jun 01, 2014 9:14 am

Tenox

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@Inge K. wrote:
@Tenox wrote:  Then again it does not click full throttle either, but it did not do that before adjustments.

They don't click at WOT, it's a different kind of switch.
Thanks. Important information.


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96Back to top Go down    Re: Things that BMW put there to annoy me on Sun Jun 01, 2014 9:18 am

Tenox

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@ReneZ wrote:Quite an interesting read as I have gotten used to the 'engine braking' at the TPS allows for and use it a lot. I like the shifting down and braking on the engine before entering a curve and the roll the throttle open and accelerate out of the curve.
I like driving with engine braking like you described too, but I actually did not notice significant difference with or without TPS on that. Or on my older bike compared to newer with TPS working.

But what about that question of mine.

If TPS/WOT would be on all the time, how would the bike act? Would it be clearly different or would it just consume more fuel?


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97Back to top Go down    Re: Things that BMW put there to annoy me on Sun Jun 01, 2014 10:41 am

Inge K.

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@Tenox wrote:
@Inge K. wrote:
@Tenox wrote:  Then again it does not click full throttle either, but it did not do that before adjustments.

They don't click at WOT, it's a different kind of switch.
Thanks. Important information.

If in doubt: at WOT pin 18 and 3 (center and right) at the TPS should be connected.


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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

98Back to top Go down    Re: Things that BMW put there to annoy me on Sun Jun 01, 2014 10:53 am

Tenox

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I have a meter about like this one:

http://tuontitukku.fi/image_view.php?name=9/laajakuva_yleismittari_digitaalinen.jpg

I know I sound (am) stupid, but how do i test this thing with it?


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99Back to top Go down    Re: Things that BMW put there to annoy me on Sun Jun 01, 2014 11:08 am

Inge K.

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Disconnect the TPS Connector, set your meter to ohms......you should
measure 0 ohms at WOT and a open connection in all other positions.


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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

100Back to top Go down    Re: Things that BMW put there to annoy me on Sun Jun 01, 2014 12:08 pm

Tenox

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Thanks again Inge. I will test both bikes. I think though that I need someone to twist the throttle for me, but I will see.


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101Back to top Go down    Re: Things that BMW put there to annoy me on Mon Jun 02, 2014 5:44 pm

Tenox

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Oh I feel more idiot than normally. I have no idea how that plug on TPS is unconnected. I hope it does not need screwdriver on both sides since there is no room. I don't want to break anything so I just ask even it makes me look stupid. How is that unplugged?

I really should get a brand new bike from a dealer and just drive... Hopeless...


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