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Old 06-14-2019, 09:45 AM
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Build Log
Top Flite P-40 Giant Scale ((Electrified))

This past winter I purchased a NIB Top Flite P40 Giant Scale from an estate sale. $400 I could't pass it up. The plan is to convert this plane to electric power. This kit came out back in 2009 I believe, its been in the box ever since the previous owner had it.

Info:
Wingspan: 86" (2,185mm)
Wing Area: 1,262inē (81.4dmē)
Weight: 23-24lb (10.43-10.88kg)
Wing Loading: 42-44oz/ftē (128-134g/dmē)
Length: 72" (1,830mm)
Airfoil: Semi-symmetrical
Robart 150LG Rotating Retracts (Pneumatic)

Suggested Power plant: 50cc Gas (DLE 55)

I will be using Rimfire 50CC electric motor on 12S, Castle 160A ESC w/ 20A BEC
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Old 06-14-2019, 10:03 AM
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Battery hatch mapped out with T Pins and cut for the two large 6S batteries. More modification will be needed to widen the fuel tank bay so that the batts sit side by side. The hatch will be replaced with thin aluminum and painted.
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Old 06-14-2019, 11:31 AM
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Cool project!

Scott
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Old 06-14-2019, 07:07 PM
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I made some more progress today, mounted the 50cc Rimfire and Castle ESC underneath the motor. A cutout was made to provide airflow over the ESC fins.

I used an adjustable motor mount from Hacker, this is designed to fit the Hacker A60 motor. The lightning holes on the mounting plate nearly match up with the Rimfre bolt pattern. In order to fit my motor I used a dremel to elongate the holes and secure with 4 bolts w/ locking washers.
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Old 06-14-2019, 07:11 PM
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Quote:
Cool project!

Scott
Thanks! I have a long way to go but hopefully it turns out ok. I've read several forums and watched countless youtube with the Rimfire motors pulling large warbirds around.
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Old Yesterday, 06:46 AM
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I converted the esm p40 to electric with a rimfire 50cc. It flys very well. I went with 10s and a 20x12 prop. 12s and a 20x10 prop seemed to be way too much current.
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Old Yesterday, 08:04 AM
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Quote:
Originally Posted by lrb75 View Post
I converted the esm p40 to electric with a rimfire 50cc. It flys very well. I went with 10s and a 20x12 prop. 12s and a 20x10 prop seemed to be way too much current.
Good to know, I've heard Xoar 23x10 is the sweet spot on the Top Flite Giant P-51 with the Rimfire 50cc, so I may try that.

My next challenge is to find a home for the Robart air tank. The original configuration is to put the bottle up front but that's where my battery hatch is. So I may mount the bottle in the space behind the cockpit or cut a hole through the instrument panel bulkhead and mount it there.
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