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1Back to top Go down   How malleable are the K100 wheels? Empty How malleable are the K100 wheels? on Sun Oct 21, 2012 9:06 am

blaKey

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A little while ago, my front tyre was loosing air...pump it up and it's flat a week later. I believe this happened after hitting a pot hole. Not difficult at all with our crappy roads around here. There was no noticeable imbalance after hitting the pothole.

The tyre shop said that there was an area on the wheel where the tyre wasn't sealing, due to hitting the pot hole and he stuck in a tube.

Question is: can I "loving hit" (bash) the wheel sufficiently so the tyre seals against the rim as before?


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

2Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Sun Oct 21, 2012 9:31 am

charlie99

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not sure blakey ...not somethong i would try

perhaps just resealing the bead with wet soap formula might seal it back up (all the way round )...ive often heard of the bead breaking its seal and becoming leaky and then other tyre installers fixxing the issue ..

but there are "wheel works" type places that could advise you better ...a couple are down here mate . no names come to mind straight away but a while ago i had my "european" rims re bent after a hit over train lines , reason for work was the european were not made to deal with aussie conditions ( i suspect width versus thickness was not optimum as suggested by them ) but i doubt that on the fairly strong stuff we have on our bikes

just a thought mate

funny how the last sports demon used to loose 2 - 3 ponds a fortnight ,...and this one doesnt at all



Last edited by charlie99 on Sun Oct 21, 2012 9:39 am; edited 1 time in total


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OHow malleable are the K100 wheels? Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

3Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Sun Oct 21, 2012 9:33 am

RicK G

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Yes you can fix a bit of a flat spot, they are probably the easiest of all to do.
Use a piece of soft wood and about a 16oz hammer and give it a hit, a bit at a time and it will come straight.
I have done it twice one to the K75 which had a flat spot when we bought it and to a wheel that a guy in Toowoomba gave me because they could nt be fixed. And I just remembered I did the front wheel on the R80 after hitting a pot hole, it had the same Y spoke wheels as the k100/75s.
If you can't see the flat spot it is ok and of course if you can it will probably leak.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

4Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Sun Oct 21, 2012 9:39 am

blaKey

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Thanks Rick, I'll give it a go after I get back from Bingara.


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

5Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Sun Oct 21, 2012 2:11 pm

Sievuun

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It can be done if the dent is not too big, i once bought a front wheel with a little dent for 1 euro on fleabay, 2 proper blows with the hammer and it was like new.

    

6Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Sun Oct 21, 2012 3:09 pm

K-BIKE

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You were probably going to do it this way anyway but if you are going to have at it with some form of walloper take the wheel out so the shock of each whack is not transmitted to the ball bearings in the hub.
Regards,
K-BIKE

    

7Back to top Go down   How malleable are the K100 wheels? Empty re wheel dents on Sun Oct 21, 2012 6:07 pm

GerryP

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I've not done this with a 'snowflake' wheel but I did have to take quite a large dent out of a 'three spoke' wheel. They're quite malleable.

I laid hands on a heavy rubber mallet and supported the rim in a square of 4"x2" softwood while I whacked at it. You have to be careful not to put a dent somewhere else while you fix the first dent.

Check for cracks after you're finished.

The dealer advised me to keep the tyres pumped up as hard as possible 'cos I'm a heavy lump.



Last edited by GerryP on Sun Oct 21, 2012 6:09 pm; edited 1 time in total (Reason for editing : brainfade)


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Safe riding Cool,
Gerry Parnham


K1100LT (1993) in Silk Blue/Cream
http://gerryparnham.com
    

8Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 6:11 am

blaKey

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Thanks for the answers folks. Yes K-Bike, wheel off so not do to damage anything!

It would be hard to even see where it's dented, so I'll just have to muck around until I get it right.

Softly, softly...


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

9Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 6:26 am

K75cster

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Blakey would you be considering a jig for the job? Say something like 5 or 6 pieces of 7ply bolted together and cut with an arc the same as the inside of the wheel. I mean the wheel would just sit there then and you wouldn't put any new bumps in it, perhaps the bit you cut out of the arc might be the thing to hit with the mallet should be a nice even fit???


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

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.
    

10Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 6:31 am

RicK G

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If you can't see of even feel the flat spot then you don't need to do anything including using a tube. If you have a flat spot that causes the tyre to leak then you WILL see it and feel it as you move your hand round the outer circumference of the wheel.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

11Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 6:38 am

blaKey

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Wow K75cster, I was going to dig a bit of a hole in the back yard so the disc sits in it and the rim rests on the ground. Then bash tap it. Your thoughts please.
New bearings are to be installed when the wheel is off.

I'll measure the runout of the rim before taking it off the bike.


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

12Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 6:39 am

K75cster

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That's a good point rick, the one i got here is so obvious that I says ouch when walking past it and that is because you can see it at a distance and yet it dont leak, go figure?????


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

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.
    

13Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 6:43 am

K75cster

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Blakey If you are just tapping it from the side then why not just use the spare on the trailer and lay it on that, if you are in need of a Tap on the flat portion of the rim then consider a cradle it will displace the thump more evenly


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

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.
    

14Back to top Go down   How malleable are the K100 wheels? Empty Re dent & paint on Mon Oct 22, 2012 6:49 am

GerryP

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Another thought - it might be an idea to check the paint under the bead.

If it has corrosion under it or has cracked from the dent it will lift and cause a leak.


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Safe riding Cool,
Gerry Parnham


K1100LT (1993) in Silk Blue/Cream
http://gerryparnham.com
    

15Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 7:01 am

blaKey

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The only trailer I have is a 6x4 that I drag behind the cage. Are you assuming that I have a trailer for my bike?
I will not be bashing the rim, just lightly tapping it.

Gerry, yes the wheel requires very close inspection to see if there is indeed a crack.


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

16Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 7:16 am

K75cster

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Blakey the spare on your 6x4 trailer is what I was talking about could also use the car one but dont let mum know, it'll just hold everything off the ground for you and save digging a hole especially if its hot up there


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

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.
    

17Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Oct 22, 2012 7:50 am

blaKey

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It's hot 75cster. I'll use the trailer's spare. Good advice. Thanks.


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

18Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Mar 11, 2013 7:48 am

LifeGuard

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Hi guys,
I'm going to paint the wheels by powder coating. I've to remove front wheel bearings. I noticed a very delicate bearing resistance, very delicate.
I don't konow when bearings was changed, even if they were.
Is it worth to buy new, replace them and don't play with the gentle removing?

BMW K100RS '87 - 145k km

http://tchorzewski.net
    

19Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Mar 11, 2013 8:44 am

RicK G

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You will more than likely damage them getting them out it is very difficult no to. You can't get to the outer of the race and using any force on the inner will mark the balls and both inner and outer then wear takes place very rapidly.
I put new bearings in my K11 and had to take them out later when they hadn't even been on the road and had to replace them as I could feel rough spots after I got them out. I wouldn't even take the risk myself.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

20Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Mar 11, 2013 9:44 am

92KK 84WW Olaf

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If you take bearings out you have to replace them. The removal process damages them. Applies to wheel bearings, head bearings and anything else like that. Just make sure you have the new ones to hand before you go at the old ones. Even taking out a brand new bearing will damage it.


__________________________________________________
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 37,190 miles
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles.
    

21Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Mar 11, 2013 10:25 am

LifeGuard

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Ok, well, you convinced me...
I'll buy new from a BMW dealer, they aren't too expensive (about $15 / one)

TNX

http://tchorzewski.net
    

22Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Mar 11, 2013 10:48 am

92KK 84WW Olaf

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If you have tyres off too, look at balancing wheels after, especially the front. There is a procedure shown in Clymer I think but its not so difficult to set up.


__________________________________________________
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 37,190 miles
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles.
    

23Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Mar 11, 2013 6:42 pm

Themason

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I would heat the dented area of the wheel with a butane torch before trying to straighten it. Move the torch back and forth over the area for about 60 seconds. I would use a piece of wood placed against the rim and a couple of sharp blows from a fairly heavy hammer against the wood. I find I have more control using a heavier sledge hammer than trying to use a lighter ball peen or carpenters hammer. Make sure the wheel cannot bounce around when you hit the piece of wood.

The three spoke rims were manufactured deliberately soft to prevent catastrophic failures where rims crack off the spokes as happens with some Japanese rims subject to hard impacts. The downside is they are more easily bent by smaller impacts. They straighten up well though.


__________________________________________________
I live in a parallel universe but have a vacation home in reality :arrow:

1984 K-100RS Alaska Blue w/Parelever and 16V wheels.

1984 K-100RS Metallic Madison stock

1986 R-80G/S w/1000 cc engine

2007 Harley Davidson Street Rod Mirage Orange w/XR1200 wheels, Race Tech, True Track, Works Performance shocks

2007 Harley Davidson Street Rod Vivid Black stock

1993-ish K-100/1100RT/LT hemaphrodite frankenbike thingy to be painted satin black from a rattle can eventually
    

24Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Mar 11, 2013 8:00 pm

LifeGuard

LifeGuard
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Finally I took out the bearings by the way destroying them.
First I removed the sealant and pulled out a wreath bearing and removed the steal balls. Then I took out the bearing inner race and centering sleeve from the hub. I pulled out other bearing with hummer. Then I put the balls in the bearing raceways back and I pulled out first bearing.

How malleable are the K100 wheels? Bearings

Sorry for my english Smile

http://tchorzewski.net
    

25Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Mon Mar 11, 2013 8:26 pm

RicK G

RicK G
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Before you put the new bearings back in make a small cutaway in the centre tube so it is easier next time. I don't know who at BMW decided to make it like that but he should be damned to an eternal life of getting wheel bearings out.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

26Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Tue Mar 12, 2013 4:44 am

dalderton

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If you dont want to try it send it to Dave Alderton in 2/10 Long St Smithfield. He and his father Laurie have been straightening them for years, Interestingly Dave (my nephew)(Declaration of interest) also has been straightening those weird BM spoked wheels with the cross over spokes ,apparently they are quite a challenge. Daves number is 0296092889
Regards Dennis Alderton.


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1985 K75c Stock other than Realm Engineering Rear Shock.
    

27Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Tue Mar 12, 2013 5:31 am

K75cster

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Good call Dennis now we got a contact to add to the to do list


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

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.
    

28Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Tue Mar 12, 2013 11:13 pm

AuntieBB

AuntieBB
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Yep - those K wheels are quite soft.
I used to take my K down a lot of dirt roads and my mechanic would sigh every time I took a wheel in for a new tyre. He'd bash the dents out of the rims as a matter of course.

shameless plug for my favorite workshop:
Chivo's, 3/20 Crescent St, Granville NSW (02) 9682 5950
I've been buying tyres from them for 25 years.


__________________________________________________
once upon a time: 1987 K100RT/TIC
now: 2010 R1200GS
    

29Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Thu Mar 14, 2013 3:00 pm

Themason

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[quote="Rick G"]Before you put the new bearings back in make a small cutaway in the centre tube so it is easier next time. I don't know who at BMW decided to make it like that but he should be damned to an eternal life of getting wheel bearings out.[/quote]

WTF??? Shocked Was I not paying attention and clicked on the Harley forum? Heat the hub with a butane torch to 100 degrees C (takes about 60 seconds moving the flame around the perimeter of the hub) and use a [i]proper[/i] bearing puller. If you don't heat the hub to expand the aluminum, when you remove the bearing you will drag some hub material out with the race. Then when you install the new bearing it will not seat tightly in the hub. Don't ask me how I found this out .......Embarassed

A proper bearing puller makes the job very easy to do and they don't cost all that much. Remember to heat the hub back up to 100 degrees C before you try installing the new bearing. If the hub is properly hot, the new bearing will drop about halfway into the hub just by gravity, and you can tap it home very easily. I use a big socket that has the same ID as the bearing installed on a short extension. You will know when the bearing is fully seated by the different sound it makes when you tap it.


__________________________________________________
I live in a parallel universe but have a vacation home in reality :arrow:

1984 K-100RS Alaska Blue w/Parelever and 16V wheels.

1984 K-100RS Metallic Madison stock

1986 R-80G/S w/1000 cc engine

2007 Harley Davidson Street Rod Mirage Orange w/XR1200 wheels, Race Tech, True Track, Works Performance shocks

2007 Harley Davidson Street Rod Vivid Black stock

1993-ish K-100/1100RT/LT hemaphrodite frankenbike thingy to be painted satin black from a rattle can eventually
    

30Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Fri Mar 15, 2013 6:28 am

LifeGuard

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I'll heat the hub before intalling bearings and I'll freeze the bearings in a freezer Smile

http://tchorzewski.net
    

31Back to top Go down   How malleable are the K100 wheels? Empty Re: How malleable are the K100 wheels? on Thu May 28, 2015 7:04 pm

mr grumpy

mr grumpy
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Cześć, Lifeguard, co słychać u ciebie? Mója dobra przyjaciółka jest polska i ja uczę się polskiego. I had a new front tyre fitted today and the fitter showed me the wheel on the balancer with a significant flat on the rim which has passed unnoticed by me or the MoT tester for the past three years! A few judicious "taps" with a hammer and a wooden drift with the wheel supported by the rim on two flat pieces of wood have reduced the extent of the distortion to a degree that is still noticeable but well within acceptable limits. The most remarkable thing is that such a visually great irregularity was entirely undetectable in use. So, yes, these wheels are durable and repairable.


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K100RS 16v
    

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