Glow to Electric Conversions Discuss glow/gas conversion to electric here.

need advice on p40 setup

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Old 09-25-2011, 05:04 AM
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Wingspam
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Default need advice on p40 setup

Electric motor conversion on a budget?

I have a VQ p40 60 size that I want to convert to electric, it flys very nicely on a 75 ax with a 13x6 prop and with a total weight of 9lbs.

Keeping in mind that I want to try to get the motor, esc and battery for about the same price as the 75ax (229.00). $300.00 would be limit on setup. What do you suggest?

I have been to a lot of sites and have developed tired head and could use some help. LOL

Thanks
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Old 09-26-2011, 12:38 PM
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RickAvery
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Default RE: need advice on p40 setup

Hi Wingspam,
I have a Hangar-9 P-40 & a Spitfire Both 60e size that I built up as electrics. The P-40 weighs in at just under 9lbs. and the Spitty is 10.75lbs. They both share the same power system. E-Flite Power 60 motors, CC P-80 amp ESCs on 6s, 5000mah Lipos. The P-40 has an APC, 15.75 X 13 3 blade prop that I cut down to ~14.75" in dia. The Spitty has the same APC prop not cut down. The P-40 is noticably faster, but at 2lbs less, you would think so, although, I think the smaller prop is getting me higher RPMs & prop speed & is helping the performance. Not that the Spitty is a slouch. There was a club mate at the field a few weeks back with the same Spitfire using a fuel motor of some type and it was clear that the e-powered model of mine performed much better. The draw back is 5 to 7 min. flights vs. his 12+ min. Good luck.
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Old 09-26-2011, 02:14 PM
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Wingspam
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Default RE: need advice on p40 setup


ORIGINAL: RickAvery

Hi Wingspam,
I have a Hangar-9 P-40 & a Spitfire Both 60e size that I built up as electrics. The P-40 weighs in at just under 9lbs. and the Spitty is 10.75lbs. They both share the same power system. E-Flite Power 60 motors, CC P-80 amp ESCs on 6s, 5000mah Lipos. The P-40 has an APC, 15.75 X 13 3 blade prop that I cut down to ~14.75'' in dia. The Spitty has the same APC prop not cut down. The P-40 is noticably faster, but at 2lbs less, you would think so, although, I think the smaller prop is getting me higher RPMs & prop speed & is helping the performance. Not that the Spitty is a slouch. There was a club mate at the field a few weeks back with the same Spitfire using a fuel motor of some type and it was clear that the e-powered model of mine performed much better. The draw back is 5 to 7 min. flights vs. his 12+ min. Good luck.

Are you using 1 battery or 2?

What can I do to get a little longer flight times, something closer to 10 mins?

Thanks
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Old 09-28-2011, 05:27 AM
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RickAvery
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Default RE: need advice on p40 setup

Wingspam,
I have 2 battery set ups. 1 is a 6s1p 5000mah battery, (a single 6cell, 5000mah brick), the other is a 6s2p, (2, 3cell 5000mah packs wired in series). I put ~ 60% charge back in, so, I'm being pretty conservative at 5 -7 mins. and could proably strech another min. or two. Several manufacturers make larger batteries, i.e. 6000mah and up, Max-Amps, Thunder Power and others. Good luck.

Rick
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Old 10-04-2011, 01:05 PM
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flytreetimes
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Default RE: need advice on p40 setup

I'd suggest a Scorpion 4025-12 spinning a 15/8/3blade EMP propeller on 6S/5000/30C. 1420 watts at 58 amps, all kinds of power for a 9 lb warbird. 8-10 minutes should be doable with a little throttle control!! flytreetimes
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Old 10-04-2011, 05:00 PM
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Default RE: need advice on p40 setup

Here is my trainer used as a glider tug. It is almost 10 pounds in the video.

http://www.youtube.com/watch?v=V5k-h-n5IVA

My setup is a Monster power 60, Exceed 60 amp esc, and a 6s 5000mah battery. I am using a 16X8 APC "E" prop. I could go a little bigger on the prop, but this is a good mix of power and duration. I get almost 30 minutes of flight time when I am just cruising around.


Buzz.
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