In a message dated 96-07-23 07:57:40 EDT, johnsong@is.dal.ca (G.J.) writes:
<< ...... I won't be pleased if my tires/rims are out of true somehow. Any
way to fix alloy wheels ?
I know of at least one shop in DesPlaines, Illinois (near Chicago) that
specifically advertises wheel straightening and repair. Will look them up if
you like.
<< On a related note, I think where the drive shaft connects to the rear end,
there in a looseness there. COuld that cause a problem? Note that the shimmy
comes and goes, not with specific speeds, but with changes in the drive, like
comming out of a slight turn, or easying up on gas at the crest of a hill; it
is actually quite unpredictable in it's severity: sometimes it gets worse
when accelerating.
Worn drive shaft parts do act like this. I had a badly worn transmission
tail bearing (drive shaft support bearing) last summer. In 4th gear the the
vibration is syncronous with engine speed, 3600 rpm = 60 cycles per second,
about four times faster than your wheel speed. When it's very bad it comes
in strong and steady above 30 mph. If it's only a mild case it comes and
goes at speeds above 50 mph and is affected by torque changes, more or less
throttle may make it come or go.
<< The shimmy is translated as a side-to-side motion (I mean left and right
rotational motion) in the steering wheel. It doesn't "seem " to be speed
related, although it realy only happens at speeds above 60mph (but can be
relatively smooth at these speeds too, again, depending on the driving
conditions. >>
Probably not the drive shaft. If it shakes the steering wheel it's probably
tires.
Barney Gaylord -- 1958 MGA
Naperville, Illinois
|