Grumpner speed 480BB
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Grumpner speed 480BB
Got Simprops Dornier 328 Turboprop. Tried to fly it with 2-Grumpner speed 480 bb's on 6.5x4 props. The current drain was over 60amps using 8x2000 cells. This is not normal or is it? Got about 2 1/2 minutes of fast flight then an abrupt stop then an abrupt crash. Any ideas??
Ron S.
Ron S.
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high amperage speed 480BB's
High amperage you bet. But why? These are two brand new Graupner Speed 480 BB Speed motors in parallel using a 8-2000 pack swinging 2-aeronaut carbon 6.5X4 props. Maybe these 480's are not meant for for high loading 6.5x4(props). I dunno!
Thanks
Thanks
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Grumpner speed 480BB
Can't really say but I had an AP29L that burnt up on about the same set up. It only took 2 minutes of flying and the back housing was melted plastic.