mikegordon10

What a good prop size to start with for a Magnum XLS 15 engine for Pylon Racing?

HighPlains

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7x5 cut down till you get the rpm you want.

racer639

I ran an old revup 7X5N pylon prop on one of my XLS 15's a couple of months ago and was able to turn it up to 21,300 with 20% sig fuel, runs almost as good as my old Rossi quaret midget 15 engines