The International Cessna 170 Association

Hoping someone can provide enlightenment…

I’m helping a fellow 170A owner change his tail spring pack, but realized his tailwheel assembly, which looks, smells, and acts like a Scott 3200, is different. The upper bracket assembly that attaches to the main tail spring has the same shape and features, but is not as wide as the standard 3200 you see in all the drawings. It doesn’t require the standard leaf spring adapter, for the main spring fits snugly into the casting without it. Nor does it require a bushing for the AN7 mount bolt - the hole in the casting is already sized for the AN7.

I called the Alaska Bushwheel guys, but they weren’t familiar with it.

Does anyone know what we have here?

Todd any pictures? There are different spring stack sizes. The 3200 has a shim to adapt to the smaller stack. The important thing is that the casting be secured in tension with the AN-7 bolt. I have seen some installations of narrow spring and casting with the larger shim in place. I hope that sheds some light. Doug

It's possible you have a later L-19 tailwheel bracket. (They had minor changes in that bracket as the L-19 went thru A, B, C, etc,) Look thru the logs to see if it's ever been changed-out. A picture would help understand your question.

Are you talking about the 3200 mount not requiring a shim? You can see, we don't quite understand your question.

I just changed springs on my 3200/ on my 170B. The old main spring was wider than other springs and fit the 3200 perfectly. New spring stack is narrower and took a shim. I think springs were from different suppliers as older main spring was only a few years old.

Some years ago I replaced my main spring leaf in my Scott 3200. First ordered one from Spruce, as I recall, and upon receiving it I realized it was too narrow. I compared the main leaf to the one I had and it was, as best I can recall, 1/8" to 1/4" wider. This then required an "owner produced part" to fit correctly. It has worked properly ever since.