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  1. #1

    Join Date
    Aug 2011
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    Help needed for conversion: brushed to brushless

    The plans suggest a 400 speed motor & 8 -2/3A batteries. Scratch building a Turbo Bee by Clancey Aviation

    I would like to try brushless. What motor, speed control & battery would you suggest for the novice. Space available for batteries is not much more than the 8- 2/3A. What other factors must I consider. I am reading the usual suggest material to transition into electric, it only slowly sinks in.

    I have learned to fly&maintainthe Hobby Zone Super Cub with a brushed motor &1300ma lipo packs.

  2. #2
    whitecrest's Avatar
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    Aug 2007
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    RE: Help needed for conversion: brushed to brushless

    A brushless/lipo power system would provide much better performance. To replace a Speed 400, look for a brushless outrunner weighing from 1-1.5 oz and rated 1000-1300 Kv. This should be able to accept about 10-12 amps on 3S (3 lipo cells in series; about 11.1 volts loaded). Your prop clearance might be limited with the Bee, but hopefully, you will be able to swing something around 7x3 to 8x4. That should provide plenty of thrust. You should have more than enough room for a range of lipo batteries. Sizes from 850-1200 mAh should work well. You may need larger sizes for proper balance.

    I recently converted a micro Telemaster designed for Speed 400 direct drive. I am currently using a 1 oz outrunner rated 1500 Kv and swinging an 8x4. This plane has 210 sq.in. wing area, 36" wingspan and weighs just under 15 oz. I am using 850-1000 mAh 3S lipos. This motor provides plenty of power with a very steep climb and easily over 10 minutes of flight duration.
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    Tim


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