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Cox Engine of The Month
February-2024
1/2A Nut's

"RC Speed Boat Power Drive TD .020"

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Post  Levent Suberk Sat Mar 11, 2023 3:16 pm

A brushless electric motor mounted inside of fuel tank of Cox engine.

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Post  Admin Sun Mar 12, 2023 12:54 pm

I believe there was someone on here some years back who made one of those "brushless .049s".

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Post  Levent Suberk Sun Mar 12, 2023 1:45 pm

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Post  HalfaDave Fri Mar 17, 2023 11:41 am

Hi Levent,
I like the part, that the spring starter, is there... Very Happy
I have an electro rig that swings a 6-4 like an average BabyBee.
Cannot shut it off. Windmills. Have to keep it on 'idle'...
Also,
It is more fun to fuel up/fire up a Cox engine...
Than waiting for batteries to charge,
On a nice flying day,
Take care,
Have fun,
Dave
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Post  GallopingGhostler Fri Mar 17, 2023 5:20 pm

Nicely done glider, Levent and impressive flight, yours or a friend's? Didn't see your name in video credits, so perhaps something you found of interest from the Tube? Electric does have an advantage in a glider. Once one found a thermal or hillside updraft, can cut the motor completely until the lift ends, then turn power back on.

Usually an outrunner requires cooling to keep the armature wires from overheating. I'd be curious if the metal tank allows enough heat transfer that the electric motor doesn't burn up.

An innovative approach has been that of Nilly Willy use of a 3D printed Cox engine with nose modified to accommodate a small outrunner. That would allow for cooling.
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Post  Levent Suberk Sat Mar 18, 2023 2:13 am

GallopingGhostler wrote:Nicely done glider, Levent and impressive flight, yours or a friend's? Didn't see your name in video credits, so perhaps something you found of interest from the Tube? Electric does have an advantage in a glider. Once one found a thermal or hillside updraft, can cut the motor completely until the lift ends, then turn power back on.

Usually an outrunner requires cooling to keep the armature wires from overheating. I'd be curious if the metal tank allows enough heat transfer that the electric motor doesn't burn up.

An innovative approach has been that of Nilly Willy use of a 3D printed Cox engine with nose modified to accommodate a small outrunner. That would allow for cooling.

I found that video on YouTube. Very Happy  There are two intake holes on front of fuel tank, I think that they are enough for cooling Very Happy

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Post  getback Sat Mar 18, 2023 6:54 am

Good way to show Cox engines in a no nitro zone . St.Pats Beers
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