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Toe in? How Much, if any?

N

Nodak33

Registered User
Putting a new gear on and I’m am curious about the methodology ( if there is any) to initially set the shock struts.
I have to have them custom welded from Airframes, so the ones pictured are adjustable.
Logic is telling me I want more toe in, since there is going to be more squatting of the suspension when loaded.

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You’re talking negative camber right? You can’t adjust toe in on a Cub easily. I would do a slight negative camber. If you do too much you’ll be rotating your tires pretty often.
 
From your previous post I think you are using 6" Atlee Dodge gear? Can Steve Kracke give you the dimensions or lower shock struts? Toe in will not be effected by the shock struts, it should be zero or a little in according to Piper drawings. I think you are wanting camber which I would say 90 degrees.
 
If you camber is a little positive on the shop floor it’ll usually neutralize when you taxi. If you set it neutral when static it’ll be negative when rolling.
 
Definitely on the positive side right now as can be seen in the picture. Will adjust to neutral after work tonight.

And Steve who is this Mr. Kracke, I would gladly reach out for any knowledge he might have.


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You might want to use greased plates under the tires, and put a load in it. 6” is tippy with positive camber.
 
Just in case - I find that toe in can reliably be measured with a tape measure and two guys, if you have ribbed tires. Just go front to back on the tires. The measurements should be identical, but up to a half inch total difference front to back seems ok. At 3/4" I notice a little instability on roll out. I have only seen zero and positive toe in - never negative. Positive toe in will cause negative camber when you are pulling it into the hangar.
 
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I appreciate the feedback from all of you. Sincerely.
Made some calls to some 12 guys up north, they all said the same thing. Set at neutral. Can’t go wrong unless tire pressures are different. Sullivan got back to me finally and is sending the stc.
Temporary Shock struts are measured out at 24” to get the neutral camber and I just have to set the nuts and ship back to Airframes for them to weld up the actual useable shock struts now.

Still need to get new brake lines and I don’t know where to get the 6” ext certed safety cables either.






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On a cessna anyway, i like some positive camber.
Handles well (assuming toe-in is correct), looks right,
AND gets me more life out of the tires.
Provided i take the tire off the wheel & turn it at annual time.
 
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