BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   K1 Final Drive on a K1100LT ~ Empty K1 Final Drive on a K1100LT ~ Tue Oct 18, 2016 9:08 am

David Nimrod

David Nimrod
Silver member
Silver member
My aim is to lower the top gear revs on my K1100LT.

Which final drives would achieve this, and fit straight on.

My first idea was the Final drive unit Paralever 33:12 from a K1.

Are there any other options..?

Thanks! K1 Final Drive on a K1100LT ~ 112350


__________________________________________________
What I'm out for is a good time
All the rest is Propaganda! K1 Final Drive on a K1100LT ~ 112350
    

2Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Tue Oct 18, 2016 10:59 am

duck

duck
Life time member
Life time member
Yes, a K1 FD will bolt right up.  A 31:11 from a K1100RS will also work. No other simple easy options.
 
But the question is WHY? K bikes are designed to run at high RPMS. As I usually tell people, "It's not a Camry."

It's pretty standard for newer K bike owners to want a sixth gear or taller gearing.  You're certainly not the first person to be of this mindset.

The reason that the K1 has a taller gear ratio is so that it can achieve a higher top speed.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

3Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Tue Oct 18, 2016 11:28 am

David Nimrod

David Nimrod
Silver member
Silver member
duck wrote:
 
But the question is WHY?

Good point... K1 Final Drive on a K1100LT ~ 112350

My recent bikes have all been twins, in fact I've not owned a 'four' since before the millennium...

The last three were: Moto Guzzi Spada (1986), BMW R100RT (1980), Harley FXST Softail (1989).

So for me, the K feels 'busy'... like it desperately needs a higher top gear, or a 6th gear, or both!

I rarely seem to rev the engine beyond 5000rpm, (I'm thinking about fuel consumption here too).

So: would the K1 FD give me a noticeably more relaxed cruising speed. Or should I simply adapt?


__________________________________________________
What I'm out for is a good time
All the rest is Propaganda! K1 Final Drive on a K1100LT ~ 112350
    

4Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Tue Oct 18, 2016 1:44 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Took me a while, but I was able to adapt to the "busy" sound of my bricks.  Now, I will find myself on the interstate running at 65-70 mph in 4th gear.


__________________________________________________
Present:
1994 K75RT
1991 K100RS


Past:
1988 K100RS SE
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

5Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Tue Oct 18, 2016 2:05 pm

robmack

robmack
Life time member
Life time member
Same here. The K's love high RPMs. They come into their own above 4K.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

6Back to top Go down   K1 Final Drive on a K1100LT ~ Empty K1 final drive on a K1100 Tue Oct 18, 2016 4:00 pm

audibob

audibob
Life time member
Life time member
Having owned only 2 k bikes covering about 40k between them I guess I am considered a newcomer to the breed..

I still get caught out periodically  trying for a sixth gear..  even though there is a bloody great gear position indicator telling me otherwise..

I am  not worried about cruising at higher revs , as long as it feels relaxed.

Having ensured my tbs are balanced, I find my bike gives a  hint of a mechanical " rhythm" between 3800 and 4200 revs in top, below or above she is super smooth. 

The handlebar mounting rubbers were checked to make sure there was no direct metal to metal contact .

I hate riding a bike when hands / feet feel vibes, tingles, it just destroys any enjoyment .

Had enough of that on my 1976 Bonnie, thank you Triumph .

My long distant comfort is superb, and I love my bike for that.

I just hope she remains as smooth after I fit K1100 tbs during the winter...

Hope you get used to the K1100 David, she is a  smart looking bike.

Bob


__________________________________________________
Yamaha 90
Honda CD 175
Honda CB 360 
Triumph T 140V Bonneville
Triumph T150 Trident
Honda CB750 F1
Cz 175
Yamaha XS 750
R 100/7
R 80
K100 LT
K100 LT current bike
    

7Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Tue Oct 18, 2016 5:03 pm

David Nimrod

David Nimrod
Silver member
Silver member
Hi Bob, I truly believe I will!
It's more a case of getting the bike after the summer,
...and needing a good long European ride to really 'bond' with it.
Roll on the Spring!


__________________________________________________
What I'm out for is a good time
All the rest is Propaganda! K1 Final Drive on a K1100LT ~ 112350
    

8Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Tue Oct 18, 2016 8:52 pm

Rick G

Rick G
admin
admin
I have 2.62 ratio in my rear drive and barely notice the difference in RPM at any speed.
Very slight improvement in economy and to be honest not really worth it and I still try for the extra gear.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1986 K75 GS.
    

9Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Sat Oct 29, 2016 11:51 am

David Nimrod

David Nimrod
Silver member
Silver member
I spotted a K1100LT for sale on eBay, with a tell tale yellow FD...

So, curious, I messaged the vendor, had a chat, and his conclusions:

1). It's an easy swop. once you have the FD.

2). You do get better fuel range...

3). The revs don't drop that much, about 500rpm at 100mph.

4). There are no down sides, but it's not a huge change!

K1 Final Drive on a K1100LT ~ 112350


__________________________________________________
What I'm out for is a good time
All the rest is Propaganda! K1 Final Drive on a K1100LT ~ 112350
    

10Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Sun Oct 30, 2016 3:46 pm

92KK 84WW Olaf

avatar
Life time member
Life time member
Funny thing that,

Made me realise the on every bike I had I changed the gearing, easy when it was a sprocket change.

Best I can do now is change the RT 32/11 final drive to an RS 31/11 final drive which I do have with a nice new disc on it. Not worth doing for a 3% change and even changing the whole rear end to a Paralever doesn't interest me due to cost. BUT I would love the effect as I am mostly doing long runs.

Is 2.62 the best available option? 31/11 is not so bad then.

Have a look at the difference in changing a rear tyre from the specified 130/90/17 to 140/80/17, its about 1 1/2% but the other way.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 49,840 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

11Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Tue Jan 03, 2017 6:36 pm

ausbrick

ausbrick
Silver member
Silver member
I have found myself slipping along in 4th at 100 ks for a fair way , you definitely get used the k bike buzz. Would be a lot of expense and work to gear up and that's if you can find a final drive for sale with the lower ratio,only to have to change down a lot more in the twisties. Rev it and save yourself  the time and effort. Twisted Evil  Cheers AB

    

12Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Wed Jan 04, 2017 3:52 am

David Nimrod

David Nimrod
Silver member
Silver member
ausbrick wrote:Rev it and save yourself  the time and effort...

Pretty much the conclusion I've come to... K1 Final Drive on a K1100LT ~ 112350


__________________________________________________
What I'm out for is a good time
All the rest is Propaganda! K1 Final Drive on a K1100LT ~ 112350
    

13Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Wed Jan 04, 2017 7:16 am

92KK 84WW Olaf

avatar
Life time member
Life time member
My K100LT had the buzz at 4,000rpm that Ks are known for.

However the K100RT does not have any buzz at 4,000rpm or anywhere else in the rev range. It was the first thing I noticed when I took it for the test ride before I bought it. Plenty on the forum about balancing tbs and getting injectors sorted to getting the K to run smoothly.

Secondly, I got new footrest rubbers not too long ago and would strongly recommend doing that, couldn't believe the difference with nice soft absorbent rubbers.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 49,840 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

14Back to top Go down   K1 Final Drive on a K1100LT ~ Empty Re: K1 Final Drive on a K1100LT ~ Wed Jan 04, 2017 4:02 pm

Corkboy

Corkboy
Life time member
Life time member
My K1100LT hits the "sweet spot" at 4k revs. Which is exactly where my preferred cruising speed is (around 100kph).  I could tell you when it hits it with my eyes closed, it's such a dramatic difference.*

The bike just seems to smooth out at that rev range 4000 ~ 5000rpm

*Warning: Close your eyes while riding your bike at your own risk - don't blame me if you hit a tree.  lol!


__________________________________________________
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
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum