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GP Corsair .40 Elec. conversion

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GP Corsair .40 Elec. conversion

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Old 04-22-2011, 06:43 AM
  #1  
boz44
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Default GP Corsair .40 Elec. conversion



I just began building a GP Corsair .40. I just retired and am returning to modeling after many years. This kit has been in my closet for more than 10 yrs. but is complete and pristine.
I need, and would appreciate, any help, tips, suggestions or cautions that may apply. I have built and flown 7 or 8 fuel birds and consider my skills in the intermediate to advanced range.
This is my first elec. conversion and I need all the help I can find.
Specific Questions:

Elec. motor and mount comparable to at least a .46 fuel engine?
Lipo Battery,charger, servos and speed control recommendations?
Transmitter Brand and Model?
Construction tips?

Thank you all in advance for any tips or help you may offer,

boz44







Old 04-22-2011, 11:10 AM
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blvdbuzzard
 
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Default RE: GP Corsair .40 Elec. conversion

I can tell you what I used to convert a .46 sized plane to "E" power.

I used the following parts to power my Giles 202.

[link=http://www.hobbypartz.com/monsterpower-46670kvoutrunner-brushless-motor.html]Monster Power 46[/link]

[link=http://www.hobbypartz.com/volcano-series-60a-brushless-esc.html]ESC[/link]

[link=http://www.hobbypartz.com/83p-5000mah-5s1p-185-25c.html]Battery[/link]

[link=http://www.hobbypartz.com/60p-dyc-1004.html]Charger[/link]

I am using an APC 13X6.5 "E" prop, this gives me about 133 ounces of thrust at 54 amps. Give a flight time of about 10 minutes.

Here is a free online calc program I used to figure it out. It may take you some time to figure out what it all means, but that is part of the fun. You will have to build a mount for the motor. it can be a simple wood box you build onto the fire wall.

Buzz.
Old 04-22-2011, 11:51 AM
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boz44
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Default RE: GP Corsair .40 Elec. conversion

Thanks for the tips Buzz. I will be posting my progress as the adventure continues.
Boz
Old 05-16-2011, 05:04 PM
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Mustang Fever
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Default RE: GP Corsair .40 Elec. conversion

Boz:

I've done a couple E conversions recently, and also a lot of figgerin.

If you build that Corsair light, I mean cut some holes in things and sand some sheeting thinner (or use thinner sheeting), combined with an average 8 oz weight savings (over glow power) that you can get by using the right size motor/pack combo, I'm sure you can get that puppy right down to 5 pounds RTF.

The ideal power combo I've used for a 4.5 to 5 pound warbird is the GP Rimfire 25, a Flightpower 60 ESC, and a 4 cell 3300 pack from hobbyking.com ($35). With a 10x5 MAS 3 blade prop, you get over 5 pounds of thrust, 60 mph or better, and current flow that's under the maximum continous for the motor at wide open. At something less than 1/2, you'll get 15 minutes or more flight time. Use Futaba S3115 micro servos- they supply 41 oz of torque and are half the weight of a standard.

Enjoy.
Old 05-17-2011, 05:58 AM
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boz44
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Default RE: GP Corsair .40 Elec. conversion

Thanks Bob,
I appreciate the tips. I'm using a Hobby People 4120/05 motor, a Phoenix Icelite 75 Esc., a 4 cell 14.8 v 5000mah lipo. and a 30x15 3 blade prop.
I'm just finishing the fuse on this bird so it will be a while before I post any flight results.
Thanks again,
Boz

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