[Healeys] Shake

Joe and Lenore Armour sebring at illawarra.hotkey.net.au
Tue Jul 7 07:45:44 MDT 2009


Please do not assume that when your tyre has been dynamically balanced 
that you have necessarily eliminated all potential causes of vibration. 
Should the tyre be out of round, flat spoted etc. or as has happened to 
me with a new wheel the rim ( not spokes) had not been manufactured 
correctly, the wheel/ tyre can have weights added to compensate for the 
dynamic forces generated by the out of true. BUT when you return the 
assembly  to run on the radius of the tyre/wheel any dimensional error 
and out of tolerence will cause the wheel to rise and fall each time 
that point comes in contact with the road surface. Additionally a 
defective tyre may appear true at the low speeds used to dynamically 
balance them but at speeed and with heat it can deform to an out of 
round state. The join in the tread is often the point at where the 
dimensional accuracy fails. Thus balanced on a free standing axle or 
machine shaft is no guarantee of  NO SHAKES


More information about the Healeys mailing list