The International Cessna 170 Association

I'm talking about the spring set Univair sells for $235.01, and another $24 for shipping. It consist of 4 leaves, and there's no way all 4 could be installed. With the 8 AN3 side bolts in the plate above removed, the assembly could of course be slid into place. But it was too thick to allow the hole...

My mechanic and I recently installed a Univair tail spring on my 170B. The only way we could do it was to remove the top leaf. With just 3 leaves it's a perfect fit into the available space. I'm thinking Univair must have used thicker steel for the leaves than the originals, and I was wondering if a...

I checked the end rib set up on a Cardinal recently and found it had the same configuration as my 170B. That is, some of the end ribs were installed with the flange showing. I’m convinced that Cessna did this so they could just squeeze those rivets instead of bucking them to simplify the manufacturi...

Bruce, I sold the A and now have a B. The pics are from the B. I went into the control panel to change
things from the A to the B, but don't see a way to do it.

Karl's suggestion to post pictures was a good one. Unfortunately I'm not much of a photographer, as you can see.
But hopefully the two pics are good enough that you can see the difference.

Over a thousand views and so far Gary is the only one who has responded about the orientation of his aileron end ribs. It’s really no big deal, but I’d think somebody else would have checked out his aileron ribs by now and responded as to whether or not theirs are the same. That would confirm (or de...

Interesting the things we can discuss in this forum! As for J Edgar, one thing's for sure - he really knew how to hang onto his job. I doubt if my ailerons came from a 170A, as my serial number is 25174, not an early '52. I'm hoping other members will be checking their aileron rib orientation to con...

I looked again today and paid more attention. My plane has just two "flipped ribs" : outboard end of left aileron and inboard end of the right one. I suppose it could have been a botched repair, but both ailerons look factory to me, and my mechanic agrees. I'm not really worried about it -...

I noticed something peculiar in my B model the other day. Some of the end ribs in the flaps and ailerons seem to be flipped (I think 2 or 3 of the 8 were that way). That is, instead of the vertical surface lining up with the end of the flap or aileron skin, it was half an inch or so inside. This mus...

Yes, I've bought some of those Grove shims. Seems like Cessna should have followed that path back when. It's very unusual that the camber and toe-in shim requirements for a particular plane are a pair that matches a Cessna shim with the same pair of corrections, and I'm just curious as to why Cessna...

In regard to the aluminum shims that fit between the axle and the landing gear, almost all the ones I've run across correct both camber and toe-in. It's very rare that the set of corrections you need correspond to the corrections available on the shims I've seen. Can somebody tell me why Cessna did ...

We inserted 3 AN 960 washers under the left gear leg at its attachment point. As before, I used a water level to compare the wing tip heights. Of course I made sure the wheels were on a level floor, with axle heights off the floor identical. Now the left wingtip is 3/4" higher than the right, c...

I called Mr. Lehmann and he confirmed that in his experience one 960 washer shim will raise the wingtip about 1".
Limit is 3 washers. So we'll give it a go!

So if I install 2 washers under the left axle that should raise the left wingtip about 2", right? Will the
right wingtip drop by 2", making things more or less even?

Even with no damage history, the left wingtip of my 170 is about 4" lower than the right wingtip. So I guess I need to add
washers under the left gear leg at the attach bolt. Any suggestions on how thick they should be?