1/3 Scale Pitts Special Conversion To Electric
I sure could use some guidance on making this conversion. I pulled the plane down out of the rafters where it had been stored for several years now. I was going to go with a 50cc back in the day. Surprisingly, the plane was only dusty :eek: I would like to get by on 10s because I am already using several 5s packs for another plane.
Well I went back and read through the instruction manual and it was designed to be at full weight of between 14 and 16 pounds. So using the guide line of 100 Watts per pound that indicates 1400 Watts on the low end to 1600 Watts on the high end? If I run this on 10s (37 VDC) and using Watts Law, (P=IV) that would give me a Full load Current of between 37.8 Amps and 43.2 Amps. Well guys am I proceeding in the right manner?
I'm flying a Byron Cristen Eagle which is about the same size. Flew it with a Quadra 52 before. Went to a 10 cell pack with a Turnigy 6364 motor and an 80 amp ESC. Full throttle uses 60 amps but at cruise it only draws 35/40 amps. Aerobatic, as a Cristen Eage should be at full throttle.:D
Back in the day I had a Byron Cap-21, the quality of those planes was second to none. Mine was power by a 30cc Supertiger-3000. Too bad the Byron kits aren't being produced anymore, I would love to get my hands on a Pitts Special or a the Cristen Eagle.
Yeah, they were well worth it just for the quality. I also have their Cap 10B flying and one in the crate:D
Don't know if you've completed this project or not. If not, here is some info that I've been able to put together.
For decent performance, you will need about 150 Watts per pound of airplane. A bit more won't hurt. IMHO, when you get to this level of power, it pays to buy quality equipment. I've been flying Hacker motors, and have never been disappointed.
Putting in an equivalent electric system for a 50 cc gasser is not going to be cheap. But, power systems are out there that will do the job very nicely. Something along the lines of a Hacker A60-XXL motor would work.
Take a look:
Carl Goldburg Extra 330 Electric Conversion
Giant Scale electric motors vs Gasoline Engines
Harbor Freight Gasoline/Alternator Setup
Great Planes Giant Big Stick Electric Conversion
Giant Scale Cessna Model
Redwing MXSR Model
The Redwing model is a very good conversion. It's only got 12 flights on it, due to lousy weather around SE Wisconsin. Maybe we'll get a few more flights before the snow gets us.
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