> 1 - At around 65-70 mph on what passes for a smooth highway
> in Quebec I can
> get a vibration/shudder in the front of the car. I was sure
> that it was an
> out-of-balance tire or rim, except for the fact that
> sometimes the car is
> dead smooth. The shudder is odd in that it feels like the
> front of the car
> is "wagging" side to side as much as jumping up and down. A
> bit of both. It
> is definitely felt in the steering wheel. If I go faster, it
> damps down but
> is not perfectly smooth until around 80 mph.
I had the same thing in the spitfire and the TR3a. It turned out to be
out-of-balance tires and alignment. I worked it out to be something like a
harmonic balance. The vibrations the two wheels would sometimes cancel each
other out aka-smooth ride. If the opposing vibrations were in sync, whuge
vibrations and steering wheel shakes. Balance and alignment helped a great
deal.
This could be the case because of the wonderful Quebec roads. Alignments
and wheel-tire can easily be thrown off.
David A. Templeton
'59 TR3a - 9TS54226L ( "9" denotes the CDN import on year of mfr )
'74 Spitfire - FM10491L
Southern Ontario (2nd behind Quebec for "smooth" roads).
What do you do when a road has way too many potholes and the county has no
money to fix properly? Easy, put down 3" of gravel and make it a dirt
road!!!!!
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