Re: Tire Changing questions

[Bob Hadden <kbhadden@xxxxxxxxxxx>]

Jack,  If the bike is bouncing, you should try a balance.  If under 
zero power, you might get a little chatter from the gear set but under 
load on the dyno, or minor acceleration while on the center stand, you 
should be smooth.  Rear tire imbalance is not too obvious when riding, 
but I think you will see a difference after the correction.

On the balancer I have, I got two cones to center the wheel on the 
shaft.  For the rear tire, I reverse the cone to fit pretty well inside 
the flange side.  There is a slight looseness in this fit.  I have 
several times balanced, then refit the cone in a different position to 
check the balance.  Never had any evidence that there was an error 
introduced with the looseness.

Bob Hadden '98RS, '62R27

On Jun 22, 2004, at 10:11 PM, Jack Bunce wrote:

> <snip>
> For the BMW content: When I put my R1100SA on the centerstand and spin 
> the rear wheel under power the bike feels unbalanced and shakes. Yet, 
> I do not feel this imbalance on the road. Should I have the rear wheel 
> pulled and balanced or is it normal for an R100SA to act that way on 
> the centerstand with the rear wheel under power? [This came up because 
> I had the bike on the dyno and the tester mentioned the rear wheel hop 
> to me.  So I tried it at home.]

>> In a message dated 6/21/2004 10:24:51 AM Eastern Daylight Time, 
>> cliddell@xxxxxxxxxx writes:
>>
>>> If you are a only a couple of thou's out then the whole
>>> weight of the wheel acting at that tiny distance can easily equate 
>>> to around
>>> 10 or 20 g - and, of course, you are only un-balancing the
>>> wheel :(

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