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Old Aug 15, 2014, 01:54 AM
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BCSaltchucker's Avatar
Joined Sep 2011
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1/5 scale CMP cub converted to electric?

Hey just picked up one of the CMP Cubs from Hobbyking. 90 inch wingspan, for $220, so why not? https://www.hobbyking.com/hobbyking/...dProduct=52316 arrived in 3 days from when I ordered it - nice.

Flying buddies keep telling me how much better big models are, so here we go. I mainly do FPV with a mix of foamies and some built-up balsa planes too. I like how it will be easier to get very detailed scale cockpit for flying FPV from the cockpit, as I do. And I likehow it can carry my Benedini sound system with 4 inch speaker for synth'd Cub sounds.

I don't want aerobatic power. Just floatiness and endurance. I have a couple 5000mah 6S zippy compacts I hope to use, even though I know it is easier to go to 10S or so.

ordered up this 5055 turnigy motor. Rated to max of 1400 Watts. OK I realize that might be hard to achieve with 6S. Sounds like it needs 16x8 or 17 incher to get 8-9 lbs thrust which should be not too much less than flying weight. HK says 3.6Kg flying weight but they are confused what that means I think - maybe airframe alone without engine is 3.6Kg, we will see. https://www.hobbyking.com/hobbyking/...dProduct=19616 If not good, I might go to a Power90 by Eflite or similar. Ecalc doesn't have the motor listed but similar spec Turnigy Sk motor puts our 5.5Kg thrust ~1100W on 6S and 16x8 prop




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Old Aug 15, 2014, 09:40 AM
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Doug Bartley's Avatar
Canada, ON, Owen Sound
Joined Oct 2008
2,793 Posts
What kv is your SK3? I have used the 5055-320 with great success with 16 x 8 x3 blade EMP props. This motor will easily turn an 18/10 2 blade on 6s.
I too suspect 3.6kg /8lbs is the plane weight without a power system. So 10-11 lbs, 1100 watts would be ample for flight. Doug B
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Old Aug 15, 2014, 10:17 AM
fly by night
BCSaltchucker's Avatar
Joined Sep 2011
5,440 Posts
it's not the SK3. It's a Turnigy L5055A 400kv. I have the motor and 16x8 props just arrived this aft.
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Last edited by BCSaltchucker; Aug 15, 2014 at 06:20 PM.
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