Re: [Amc-list] Tire Balance

[Frank Swygert <farna@xxxxxxx>]

Mark is correct -- stack the weights initially in one location to balance the bubble. Then split the weight into four groups and put them at the 4 and 8 o'clock positions, adding or subtracting weight to balance the bubble again (may have to add a slight amount to each). There is no weight at the 12 or 6 o'clock positions, just 4 and 8. This spreads the imbalance as Mark surmises. You will likely have to toss two trimmed weights, but the better balance would be worth it! My motorcycle wheel was bubble balanced by a small shop that mostly dealt with dirt bikes. All weight at 12 o'clock (but a small amount, not a big one!). It's fine until you hit about 90 mph. I've left it alone for 5-6 years -- it's my speed check/reminder!! At 95 it starts to get a shake (at 90 a little quiver in the steering), and at 100 it gets shaky enough to be a bit on the scary side (100 mph on a bike is scary enough without a little shake in the bars!!). I'll run it up to 100 1-2 times a year just to 
 "blow it out" (the bike DOES run better for a good while after), but won't hold anything over 90 for any length of time (meaning more than 30 seconds -- and that's rare, 80 is usually my cruising speed limit -- wouldn't want to pay a ticket for that, so usually stay 70 or so). 


--------------------
Date: Thu, 20 Sep 2007 10:03:54 -0500
From: Jeffrey.Bohler@xxxxxxxxxxxx
Subject: [Amc-list] Re; Tire Balance.
To: amc-list@xxxxxxxxxxxx
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	<OF4FAA1889.8F664B38-ON8625735C.0052720E-8625735C.0052C196@xxxxxxxxxxxx>
	
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I had the same question when reading the original posts about this process,
and have been waiting for more information.  Can someone who has used this
process in the past please clarify whether the total weight is placed at 12
o'clock or 6 o'clock?

 
From: Wrambler242@xxxxxxxxxxx

Are we stacking the total weight at 12 o'clock then moving it clear down to
4 and 8? Or are we stacking the weight at 6 o'clock?
I had in the past split weight front to rear of rim, but don't rememebr
doing it this way. Splitting it would make any imbalance less of an issue as it would be spread out farther.


 -------------- Original message ------------------

> > Divide the weight into FOUR separate weights. Then move the two groups of
> > four weights to the 4 and 8 o'clock position on the wheel. Adjust the size of the > weights to get the tire to center the bubble.
> > By dividing the weights into 4 groups (to be mounted on the front and
> > rear of wheel) and positioning them at 4&8 o'clock you
> > are coming closest to achieving "Dynamic" balance by using the static
> > method.
> >
> > Bruce Hevner
>
-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)


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