Shimmy '49 F4
#18
The truck didn't shimmy from the factory, it didn't have shocks from the factory,nor radials and tubeless wheels, so putting shocks isn't the cure, although they will be a welcome addition, something is loose or worn out, recheck the tie rod ends,jack up one wheel and work the tire back and forth aggresively to see if one or the other rod end gets loose, watch steering box at this time also, if king pins are tight that won't be the problem, what I didn't see you check, or I missed it, was run out on the wheel, with the front end jacked up set a five gallon bucket along side the wheel front or rear, using a rod,screwdriver,stick set it on the can turn the wheel and see if it runs true side to side, there is a possibility of a bent wheel that will cause the shimmy.
#20
C600, Thank you. I'm thinking that the out of round driver's side tire may be the culprit. I will be replacing both of them soon, so hopefully they will solve the problem. I will also be adding shocks at some time also. I checked all of my wheels for sideways runout before I had them powdercoated. All six had probably .030-.040" of runout on the bead of the rim. I pulled them off of a mid 70s Dodge motorhome. None appeared damaged, from hitting a curb or something similar, so I'm assuming the runout is normal. Everything else in the steering has been rebuilt or was tight when I checked it. I do need to adjust the toe in also.
Thanks again, Mark
Thanks again, Mark
#22
Thats all good then, with a little more toe in and new tires that may just correct the problem, although I don't see how the out of round would cause a shimmy.
I fought a lot of these problems on a 61 GMC 2 ton with torsion bar independent front end, long story short it was the lower ball joint.
I fought a lot of these problems on a 61 GMC 2 ton with torsion bar independent front end, long story short it was the lower ball joint.
#23
#24
Thats all good then, with a little more toe in and new tires that may just correct the problem, although I don't see how the out of round would cause a shimmy.
I fought a lot of these problems on a 61 GMC 2 ton with torsion bar independent front end, long story short it was the lower ball joint.
I fought a lot of these problems on a 61 GMC 2 ton with torsion bar independent front end, long story short it was the lower ball joint.
#25
Thanks again,Mark
#27
Believe me, Mark, excessive toe in or too much toe out can cause a shimmy as the tire scuffs along the road. As someone mentioned, check the tie rod for being straight. Not uncommon for it to get hung up on a stump or rock or where someone winches it onto a trailer with the chain around the tie rod. This happens and instant excessive toe out.
#28
Believe me, Mark, excessive toe in or too much toe out can cause a shimmy as the tire scuffs along the road. As someone mentioned, check the tie rod for being straight. Not uncommon for it to get hung up on a stump or rock or where someone winches it onto a trailer with the chain around the tie rod. This happens and instant excessive toe out.
Thanks again, Mark
#29
You are probably right, Ray. I just always assumed that it would be much more of a problem with toe out as you dart back and forth correcting. I did check my tie rod and it is straight. I will double check the tie rod ends also, but I believe they are tight. I will post an update when I set the toe and get the new tires on.
Thanks again, Mark
Thanks again, Mark