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Old Apr 06, 2014, 11:48 AM
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Cut a hole into the cockpit and it will hold a 2650mah 4s battery with ease. Not that it needs that much power but it sure is fun. Here is an old video of the EPO hinges pulling some serious G's With a grossly over powered P-40. The vid starts out slow and then I turn it up at the half way mark. The only bad thing about the EPO P40 is that you will struggle to fly it with a 450 motor unless you build super light and it is very calm out. A 480 is as small as I dare go with the P40. In the video if memory serves me correct I believe I am running a 1500kv 10 size motor on 4s. Note there is no cowl to keep the motor cool as it was running a APC 8x8 prop and cranking some serious rpm's.
GWS Warhawk (1 min 59 sec)
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Old Apr 06, 2014, 05:19 PM
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United States, MO, Raymore
Joined Sep 2011
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Thanks, I was planning on using a suppo 2212/13 1000kv with a 9X6 E APC. It has been my standard on all my GWS, but as this is my first EPO and it does seem to be heavier. I am thinking I may need to go bigger.

Como
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Old Apr 06, 2014, 05:35 PM
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Here is a great combo for the GWS EPO P40. It gives you the nose weight that you will need and enough power to stay out of trouble.
http://www.headsuphobby.com/Power-Up...otor-E-570.htm
http://www.headsuphobby.com/APC-9-x-...ller-G-171.htm
http://www.headsuphobby.com/Stick-Mo...tors-E-731.htm
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Old Apr 06, 2014, 06:46 PM
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Semperfi1970, How does that stick mount hold up to the heat?

Also I have a EPO Corsair and at T6 Texan that I will be building once the P40 is off the bench. Any insights on those?

I am now in search of the EPO FW190 to add to the hanger.

Como
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Old May 22, 2014, 03:30 PM
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Wow Como, pardon the super late response. The 35mm motor mounts are not effected by heat and trust me I get my motors hot at times. Here is a GWS EPO Corsair using a 35mm mount and it handles a 42mm motor at almost 1200 watts and 139 ounces of thrust. The mounts are very tough just use a hardwood stick not the pine ones that come with most kits if attempting this level of stupidity.

Also here is one of the last EPO FW190's to be had to the best of my knowledge.

GWS Corsair EF-1 Racing Motor (4 min 30 sec)

FW190 GWS (3 min 41 sec)
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Old Jun 27, 2014, 10:51 PM
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I just finished putting together my EPO P40 and she is heavy. I just need to paint it (can only do spray cans or brush). I don't have an airbrush or air compressor. It has a Park 480 1020kv motor, 3s 2200mah battery, and 3" Dubro spinner, but she is really nose heavy. When I measured my CG, it's about 35mm to 40mm. Just hair past the first panel line on the top of the wing. Anyone else having the same issue with CG?

Battery is pushed all the way back in the compartment.
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Old Jun 28, 2014, 02:29 AM
swede
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I found mine was quite nose heavy with the dubro spinner I had on it when running the 3-blade. Looks like you have a similar spinner.

I originally added weight to the tail, but I found it flew much better with the original foam spinner and no tail weight.

What battery are you using? Mine was using a 3S2200.
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Old Jun 28, 2014, 07:44 AM
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Tennessee
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Mine has retracts so additional weight and its also EPS but I did add a 9g lead block in each side of the Horiz stab. Can't remember the exact CG but I think it likes to be a tad nose heavy and I have no nose over issues with mine on a hard surface but I do have a 450 size motor in mine. I also push the battery as far back as I can get it.

Alan
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Old Jun 28, 2014, 08:59 AM
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Quote:
Originally Posted by denial15 View Post
I found mine was quite nose heavy with the dubro spinner I had on it when running the 3-blade. Looks like you have a similar spinner.

I originally added weight to the tail, but I found it flew much better with the original foam spinner and no tail weight.

What battery are you using? Mine was using a 3S2200.
I forgot to mention, it is a 3s 2200mah battery. How do you attach the foam spinner?
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Old Jun 29, 2014, 04:46 PM
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Does anyone have the foam two blade spinner they would like to part with? Please PM me. I do have the three blade and will trade it if that is what it takes.

Thanks,

Como
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Old Jun 29, 2014, 07:08 PM
swede
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Quote:
Originally Posted by Hack73 View Post
I forgot to mention, it is a 3s 2200mah battery. How do you attach the foam spinner?
Used the top of a soup can lid. I drilled a hole in the center, put it on the shaft behind the prop. Then I glued the foam spinner to the can lid with canopy glue. I turned it by hand to get it close to center as possible.

I've done it that way on a couple planes, and again to repair broken props. It wasn't too difficult to get it centered. The canopy glue comes off easy enough when you need to remove it. I would think white school glue would work similar to canopy glue.

It's kind of ghetto, but it worked for me.
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Old Jul 04, 2014, 01:19 PM
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The best way to adjust the CG on any electric plane is by moving the battery. If you cut out the inside of the cockpit firewall you can go as big as a 3000mah 4s battery. The end result is that you will have no pilot but rather a battery in the cockpit.
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