Strange Intermittent Intense Steering Wheel Shake

Suspension, including wheel, tire and brake.
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bertvorgon
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by bertvorgon » 12 Aug 2013 12:00

Ha..Basically...EVERYTHING must be tight.....

So...WELD everything up........no more issues...... :wink:
"Racing makes heroin addiction look like a vague wish for something salty" - Peter Egan

Keith Law
1973 2Door Slalom/hill climb/road race / canyon carver /Giant Killer 510
1968 Vintage 3HP Mini Bike
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by HudsonMC » 13 Aug 2013 07:00

bertvorgon wrote:Ha..Basically...EVERYTHING must be tight.....

So...WELD everything up........no more issues...... :wink:
:lol: This was basically our strategy when suspension parts started coming apart in our 24 hours of lemons race last year. I've said it before, but there is something remarkably liberating about racing in and working on a $500 racecar which you have ZERO love for. You just do whatever it takes to keep it on the track and out of the pits.

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bertvorgon
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by bertvorgon » 13 Aug 2013 07:31

That would be too much fun!

That's why I never went full on road racing with my car, I just loved it too much and from what I saw of the local drivers at the time ( even now ), there is just no way you will survive without sheet metal damage over time. Our club track days were perfect, not that ANYTHING can happen when cars are going fast, but, we all respected everybody else's stuff. I survived hillclimbing so that was good enough!
"Racing makes heroin addiction look like a vague wish for something salty" - Peter Egan

Keith Law
1973 2Door Slalom/hill climb/road race / canyon carver /Giant Killer 510
1968 Vintage 3HP Mini Bike
1971 Vintage 13' BOLER trailer

Sleepys-14
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Sleepys-14 » 14 Aug 2013 08:37

I did also find that my solid (delrin?) bushings in my idler arm have a bit of play in them... Its like they fit loosly in the arm bore. I'm going to take them out and see what I can do about somehow getting them to fit tighter. The sleeve in the middle is tight though.
Beer... The cause of, and solution to, all of lives problems- Homer Simpson

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defdes
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by defdes » 14 Aug 2013 12:33

I used to get this shake in my race car every so often. Always, from what I remember, on the warm up laps and I just attributed it (and wanted to attribute it) to rubber from the pits on sticky Hoosiers causing major out of balance. Perhaps the steering box was the cause after all....it's someone else's problem now.

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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Sleepys-14 » 16 Aug 2013 06:26

I have those Exp. Eng. Delrin bushings that are a bit of a loose fit in the idler arm. Yesterday I cleaned everything off and put JB weld around the bushings as I pressed them into the idler arm this time. I let it cure for 15 hours, and reinstalled it. I now have absolutely no play what so ever, and the idler arm moves perfectly smooth with no play. Now the stainless sleeve turns on the delrin bushings as they are designed with no play. I took it out for another drive, and it is a very noticeable difference. Before I have about 1/8" of play up and down, now there in nothing.
Last edited by Sleepys-14 on 16 Aug 2013 07:11, edited 1 time in total.
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Bike papa » 16 Aug 2013 07:04

Not to thread jack but...
Jordan, I was working on my idler arm last night and I have the same kit. I also noticed that there was a lot of play with the sleeve. So there was a big difference in steering when you glued it in? The bushings also seem like they are going to be a really tight press fit. I'm using a brake cylinder hone to open the idler arm up a bit
I figure a lot of small improvements add up

BP
1971 Datsun 510 2 door
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69 BSA 650 Firebird Scrambler
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Sleepys-14 » 16 Aug 2013 07:10

mmmm, the stainless sleeve fits extremely well in the bushings, but the bushings have a bit of clearance in the idler arm. It seems that you have just the opposite problem?
Last edited by Sleepys-14 on 16 Aug 2013 08:17, edited 1 time in total.
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510wizard
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by 510wizard » 16 Aug 2013 07:26

If I remember correctly, the Exp. Eng. bushing kit only fit the OEM idler arm, not the aftermarket stuff. I wonder if you have an aftermarket idler arm?

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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Sleepys-14 » 16 Aug 2013 07:30

I do have a factory arm with the part number and "hamburger". Not a ton of play, but not press fit tight, ya know. And the arm isn't worn at all. It still has the machining marks on the inside of the bore.
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Bike papa » 16 Aug 2013 07:41

Jordan, Let me clarify
The bushings are a tight fit in the stock idler arm. And it is a stock arm.
The stainless steel sleeve is a bit loose where it fits over the shaft that mounts to the body. Similar to your situation.

BP
1971 Datsun 510 2 door
08 VW R32
69 BSA 650 Firebird Scrambler
Too Many Bicycles

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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Bike papa » 16 Aug 2013 07:49

I guess my situation is a bit different than your's.
but I did verify the "hamburger"
I was just trying to figure out how to eliminate the play between the stainless sleeve and the shaft it fits over.
I think the JB weld is still a good option

BP
1971 Datsun 510 2 door
08 VW R32
69 BSA 650 Firebird Scrambler
Too Many Bicycles

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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Sleepys-14 » 16 Aug 2013 08:05

OOOhh, i see what your saying now. You are correct, the sleeve isn't the best fit on the shaft as well. But when you tight the nut, it doesn't move at all. I wish the sleeve had a smaller inner diameter as i'm sure you do as well. I love all of these amazing products that are supposed to fix these slop issues, and they just create another by not properly designing a simple sleeve.... can't win em all i guess.
Beer... The cause of, and solution to, all of lives problems- Homer Simpson

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Bike papa
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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Bike papa » 16 Aug 2013 08:33

I didn't think about the bolt tightening event thing up. I think I"ll use a couple of wraps of Teflon tape instead of jb weld.


As for the OPs original problem, I had a 510 wagon that had wheel shimmy at around 35-40 mph it happened all of the time and no one could offer any solutions but it went away when I change to a set of wheels with less "dish".
It was pretty frustrating at the time.

BP
1971 Datsun 510 2 door
08 VW R32
69 BSA 650 Firebird Scrambler
Too Many Bicycles

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Re: Strange Intermittent Intense Steering Wheel Shake

Post by Derek » 16 Aug 2013 09:04

Since the sleeve is constrained when the nut is tightened it is fine for it to be a slip fit on the shaft.

Designing mechanical fitment of new parts to old parts is no trivial task. With no access to information on the tolerances of the old parts, the designer has to go with what they know and allow for variance where they can.

Since I have the EE kit but an aftermarket arm, anyone have an extra OEM idler arm assembly (in any condition) they are willing to part with?

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