Front end shimmy

[olguy]

Hi guys, long time no see.. since I finished my '27 "T", I've been too busy enjoying it to check out the forum.
I have a 4" dropped tube axle with radius rods. The steering is conventional (not cross steer), using a ???
steering box. Lately I have experienced a "shimmy" at low speeds. It's not constant and may be triggered by a dip in the road. If I slow down momentarily, it disappears. Tire pressures are O.K., no excessive play in the steering linkages. I am running bias ply tires with about 25# pressure in C78-14 Carnegies. It doesn't happen all the time...I'm stumped...an suggestions?
Thanks,
Olguy

 

[Francis Blake]

The first thing I would suggest is, and you probably did this check and be sure everything is tight. It sounds like a slightly out of balance condition, if this don't check out, some of the guys on here had to use a steering stabilizer on the front end. One more idea, jack up the front end and spin the wheels and see if there is a defect or out of round.

 

[railroad]

Francis is right. Check the simple stuff first, balance, out of round, loose bearings, etc.

 

[EX JUNK]

Also check your caster.

Jim

Francis is right. Check the simple stuff first, balance, out of round, loose bearings, etc.

An imbalance usually shows up around 50 MPH.

Jim