blue cobra wrote:Tan Super Sport seems to be agreed upon as some of the best rubber. However, if I am correct about this, it has a limited number of sizes. Are its advantages great enough to outweigh the difficulties of adjusting prop pitch?
I believe so. However, even if you were to use another rubber than Tan Super Sport, would you be able to get it in different sizes?
There used to be some place that sold custom stripped Tan Super Sport (was it Dave Zeigler's site?). I can't find it anymore, but I got some from there once and it was good. Some people discussed the variations in ordering custom stripped rubber vs. stripping your own, but I found it to be close enough.
FAI Model Supply sells 3/32," which is about .093," and also worked pretty well for me. They still have .083" listed on their site for Science Olympiad, in my experiences I found it was a tad short on torque, but if I had more time to trim the plane and prop it may have worked. It's going to all depend on your plane.
How can you make something that allows you to wind by yourself/off plane?
I believe last year's thread had a detailed explanation in it somewhere if you can find it.
What are the best lubricants, and is it best to lube before or after check-in?
I find the best lubricant to be Armor All. You don't want to use anything oil-based, as it will break down the rubber. A few years ago I got a bottle of rubber lubricant that I believe FAI Model Supply sold and I didn't care for it too much. It was too viscous and extremely messy. Didn't give me any more winds than Armor All did.
Generally, you'll want to lubricate after check in. Therefore, the mass of the lubricant is not included in the mass of the motor when you check in. However, it may also be best to not use a new motor for competition, but rather one that you have broken in once or twice, thus, you may have used lube to break it in.