ORIGINAL: da Rock
ORIGINAL: Blazer1
I am using the double lock nut set-up. The prop nut is not coming loose, the prop is actually slipping against the spinner. When I remove the prop nut it is still very tight. I noticed the ridges in the spinner back plate where worn from the prop slipping, do you think a new spinner back plate would help? I hate to not use the same style spinner that came with the ARF because it looks so nice. I have tried to find a "better" spinner that would match the lines of the plane and have not had much luck. It may come down to function over form, but I have not gave up on using the correct spinner yet!
Cut some "washers" out of sandpaper. Glue two of them back to back so that you now have a sandpaper washer with grit on both sides. Use it between the two surfaces that no longer grip each other adequately. Size it to fit the shaft closely.
Thats a good idea! I actually had to lightly sand the mating surface of the APC prop to get it to hold enough to tighten the prop the first time I installed it. I think the problem stems from the fact that when I first tried to install the prop the spinner back plate had some oil residue on it which caused the prop to slip and wear the ridges down on the spinner back plate. I tried several times to get the prop to tighten but it would get to the point of almost being tight enough to hold and then slip, each time wearing the back plate ridges more and more. I then cleaned the back plate and prop with alcohol to remove the oil and lightly sanded the back of the prop to get it to grip the spinner back plate. It finally tighten enough, or so I thought! It amazes me that the Saito 100 puts out enough torque to cause it to slip. I am guessing I tighten the nut to around 40 foot pounds of torque, and it still slips.