This is my version of a friction lock. View attachment 12877 The white Delrin knob captures an elastic stop nut in an aluminum base. Between the base and the throttle handle is a piece of old shoe leather. Once set, I haven't needed to adjust it.
Its fun to sit in the back seat of the J3 with someone who is used to flying something like a Cessna in the front seat. As the rpm drops they add carb heat and as it continues to drop they start looking for places to land till they can't stand it any more and yell " do something " . And I push the throttle forward. Fun to mess with spam can drivers.
Glenn
I have the throttle cover off right now and I was about to purchase the felt washer. What is the Delrin you speak of and is it for us non-exp guys.
Steve, live & learn. I had never heard of the gasket between Scott 3200 wheel halves but there it is on the Bushwheels exploded view. I have had 4 to 6 of these apart and never noticed a gasket. Of course the gasket might have been thoroughly stuck to a wheel half but I don't think so - probably just missing. Function? Probably to prevent Fretting of the wheel halfs as they work against each other. Guess I ought to order a couple of them. Thanks.
What is the advantage of using a delrin friction washer over a velumoid type gasket paper washer?
Here are some pictures of the proper installation. The friction washers are Velumoid which is like a thin gasket material, same material used between two wheel halves on a Scott 3200 tail wheel. There is one on each side of the throttle lever.
View attachment 12893
View attachment 12894
View attachment 12895
Delrin is more apt to be slippery. I would use a piece of old shoe leather for this purpose, as the tension can be adjusted giving the desired amount of friction.
OK. Thanks. I'll try to get a scrap of leather. Perhaps just like the leather used to protect the fabric where rudder and aileron cables exit the plane.