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UMS 5-100 service and testrun

Dane RC has helped a customer get this UMS 5-100 up and running, we’ve cleaned it, put a new gasket kit in the carburetor and tested it with a 3 blade 20*12″ propeller, it gave approx. 5800 RPM. A 3 blade 22×12″ approx. 5400 RPM and a 3 blade 24×12″ gave approx. 5000 RPM, It goes well with all of them, but if it really has to spin then the propeller must not be too big 🙂
Dane RC is able to supply the entire program of UMS motor