Dave
You shouldn't be having that much troouble balancing 19" wheels. Have
checked to see that the wheels are true - runout of 1/16" or less both
radially and in plane??? Then, are the tires seated properly on the rims???
The only time I've had that much unbalance, the tires were not seated
concentrically on the rim. To cure, simpley deflate, shake a little talcum
powder (or soapy water) on the bead and reinflate. You should be able to
hear the bead "pop" or creep into correct position on the rim. Many tires
have a small ridge cast in just above the rim so you can see fairly easily
if the tire is concentric with the rim.
Pete
----- Original Message -----
From: "Dave & Diana Dwyer" <dmdwyer@optusnet.com.au>
To: "mg-tabc" <mg-tabc@yahoogroups.com>; "MMM List" <mg-mmm@autox.team.net>;
"MG-T LIST" <mg-t@autox.team.net>
Sent: Sunday, November 24, 2002 1:17 AM
Subject: Wheel balancing
> Hi guys,
>
> Thanks everyone for your comments on my wheel balancing puzzle. You
confirmed
> my doubts about the correctness of the result achieved.
>
> We had a chance to road test the balance today and I think it is fair to
say
> that the cure is #much# worse than the disease!! The wheels are now
> chronically out of balance, and the resultant vibration discourages speeds
> over about 45 mph.
>
> The reason for using this machine is that it has a proper splined hub
adapter
> so the wheel is accurately mounted: the fact that my friend would do the
job
> for nothing was a bonus. Now I'll strip off weights until the wheels are
> statically balanced, and try again on the road. Maybe it is simply not
> possible to dynamically balance a wheel of these dimensions (large
diameter
> and very narrow), especially as weights can't be placed on the out-facing
> rim?
>
> Anyway, that was the bad news for the day. the good news was that the
(only
> just) rebuilt engine in the J2 ran smoothly, with 60 psi hot and the temp
> stabilised at 95 degrees (the ambient was well over 30C).
>
> The very good news was that when our club run reached the airfield we drew
> lots for a free joyflight donated by one of our members who has a plane .
. .
> AND I WON !!!!!!!!!!!!
>
> I've just come back from half an hour in a Stearman biplane . . . that was
so
> g-o-o-d!
>
> Regards
>
> Dave Dwyer
> J2 (and she brought us home again too - about 140 Km round trip)
> TA, TC
>
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