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This topic has been moved to Engine set up tips.

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Use  10%  nitro  Cyclone  11 x 4.5  or  10.5 x 4/5  apc  prop , To Flite  11 x 4 N  things will work out better
let us know

Randy

This could be a fine run. How does it perform in your model? You are running the equivalent of a small Venturi. I believe a RANDY Needle is same diameter as a Supertigre. Fatter than an OS. I usually run 10 percent nitro oil like yours. Less mileage a wider tune needle. We us a 10.5x4.5 apc. Your prop sounds similar. If you like the run quality your flight time sounds adequate. I run these engines a lot. I prefer a fat 2 stroke that breaks. My best running engines need nearly 5 ounces to do the pattern.


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Two things.

First, I just have a pint mixed at the paint store. And , depending on the color, it's seldom more that $20 or so. I've had a few that were more expensive depending on a ton of factors.

Second: To answer the question, start with a red you like and add blue until you get maroon. If you start with reference red and add reference blue you won't need much blue to get maroon. Too much and you get purple.

Any body that could duplicate that gear retraction should get full scale points.   From the rear in the flying videos, it looks like a bird retracting it legs.