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Posted by ddruck | Aug 16, 2014 @ 04:45 PM | 2,111 Views
I have been working on different power units for my 3m and larger gliders.
Here is my latest, even though I prefer direct drive for reliability.

Maxon 4.4:1 gearbox mated to Heli Turnigy L2822
3700kv, 420watt
here is the link:

Looks promising for a lighter glider, did not get very warm at 44A 30sec. It may take more, it is rated at45A max.
Here is my test data so far:
weight 133g, 4mm shaft ( Actual motor only 82g, 3mm shaft)
3S 3300 test lipo
14x8 E-Flight folder: 44A, 440watt, 7800rpm
13x8 Hobby king Carbon: 44A, 440watt, 7700rpm
13x7 Graupner folder: 39A, 390Watt, 8000rpm
next will try 15x6 Aeronaut and may be 15x8 but I think that may be too much.
Posted by ddruck | Aug 16, 2014 @ 04:21 PM | 2,019 Views
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Posted by ddruck | Aug 16, 2014 @ 04:20 PM | 1,988 Views
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