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Cox Engine of The Month
March-2019
Jason_WI's

"Cox Pee Wee .020 with 3D printed horseshoe backplate"

More info on this engine!


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Cox Harpy Eagle .049

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Cox Harpy Eagle .049

Post  Levent Suberk on Fri Feb 09, 2018 12:23 pm

I bought a Cox Harpy Eagle .049 engine from Matt, EX Model Engines. It look like Cox QRC engine. Firstly I dismounted fuel tank and back plate and repositioned fuel pickup line to the bottom of tank for free flying and RC use. Very good red anodized fuel tank, no flaws any. I found that backplate is made from very hard plastic. While I prefer metal backplates but that kind of plastic is sturdy. It is my first engine with new design muffler. In conclusion I am glad with this engine. Very Happy
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Re: Cox Harpy Eagle .049

Post  Levent Suberk on Sat Feb 10, 2018 4:50 am

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Re: Cox Harpy Eagle .049

Post  getback on Sat Feb 10, 2018 6:45 am

Looks like it would make a strong runner ! Does that muffler only have one hole for exhaust exit?? The colors stand out nicely too! Small Cox Logo
Features:
Dual Bypass With Boost Ports (one per side)
Muffler to Reduce Noise
Black Aluminum Spinner
Spring Starter
Red 8cc Aluminum Tank & Driveplate
New Custom Assembled Cox Items

Designed For:
Models Requiring .049 Engines

Performance:
15,500 to 17,500 RPM's Using a 5x3 Prop & 25% Nitro Fuel
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Re: Cox Harpy Eagle .049

Post  Levent Suberk on Sat Feb 10, 2018 9:28 am

Muffler has one exit hole. Another hole can be opened at opposite and if needed can be closed with a machine screw.
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Re: Cox Harpy Eagle .049

Post  EXModelEngines on Sat Feb 10, 2018 10:37 am

Happy you like the engine!

The goal with this one was to customize it a little bit with some colors while installing a muffler since a lot of our modeling friends are unfortunately subject to noise restrictions in their areas.

Matt
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Re: Cox Harpy Eagle .049

Post  1/2A Nut on Sat Feb 10, 2018 11:20 am

I like that muffler good breathing, can use some thick wall K&S aluminum tube n thread one end with a die
and lock it down with two thin nuts for a exhaust extension. Can add a pressure tap too.

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