In a message dated 7/1/00 12:07:21 PM Pacific Daylight Time,
thomkuby@iwvisp.com writes:
<< Subj: Still shimmies- I'm running outa ideas.
Date: 7/1/00 12:07:21 PM Pacific Daylight Time
From: thomkuby@iwvisp.com (thom kuby)
Sender: owner-vintage-race@autox.team.net
Reply-to: thomkuby@iwvisp.com (thom kuby)
To: triumphs@autox.team.net
CC: ednelson@ridgenet.net, british-cars@autox.team.net,
vintage-race@autox.team.net
<< - Could someone tell me what numbers they're using for front-end toe? I'm
thinking maybe the Toe isn't set right - I set it EXACTLY according to the
factory manual, any tricks here?>>
try increasing toe-in or toe-out. This should stabilize any looseness is
steering. If you have to go much more than 1/8" either way, you will start to
see abnormal tire wear. On race cars we normally use toe-out to help turn-in.
Street cars generally use toe-in. If the wheels are exactly parallel they
will tend to wander.
<<- And what was this about the driveshaft? does it really require
balancing? or is that so much "snake oil"? (and, if it does get balanced;
How?)>>
Any driveline specialty shop can balance the driveshaft or make a new one,
but this isn't related to the shimmy. An out of balance drive shaft can cause
all sorts of things on the car to fall off.
I once had a Spitfire that had a series of weird problems. First the gas
tank baffle came loose and caused pin holes where it was spot welded to the
tank. Got a trunk full of gas! Then the rear swing axles both broke within a
week of each other. The needle fell off the speedometer. One of the mirrors
broke off.
I had replaced the diff with a junk yard item and apparently the drive flange
had gotten bent. There was just enough vibration in the drive line to set off
oscillations throughout the car.
Jack Woehrle
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