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Old Feb 03, 2013, 08:57 AM
Why kamikaze pilot wear helmet
mikes68charger's Avatar
United States, OH, Columbus
Joined Jul 2010
1,098 Posts
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How much thrust / power do you need per pound?

Ok I've been away from EDF for 2 years now. I showed up at a rc swap meet and I found this huge F-106 Dart just calling my name. The sellers new nothing off it but they new it was nitro ducted. It looks like it may be a Centry Jet but at $50 with retracts I thought it would be great to have 1 big EDF in my fleet as my 70mm are small to me

So all I know is It has ducts and a cheater hole

The wings are foam core and are 42in wide and the fuse is fiberglass

Length is about 71in long

And empty with gas tanks and retracts it about 7 pounds

I do fly off grass and like to go fast

So I know there was dif size nitro motor set ups for these birds so how do you know how big of a electric set up you need? Or do you alway just try to make it a 12s set up as its the easiest lipo wise (I already have 6 5000 40c lipos)

I know I can't afford a BMV set up but I have the above lipos and a 120amp HV12s ESC laying around

I need you help guys. Thanks
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Last edited by mikes68charger; Feb 03, 2013 at 09:05 AM.
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Old Feb 03, 2013, 10:39 AM
Do it Right, the first time!
CoolerByTheLake's Avatar
United States, MN, Hermantown
Joined Dec 2008
5,981 Posts
Lots of great fans out there to be had, that will do the job. But first thing I would check out would be inlet size ( those probably can't be changed in any easy way) and outlet dia. Once you find the sq in on inlet, you can start looking for the right match in a fan by seeing what the FSA ( Fan Sweep Area) of that given unit is. There are some variables, but 100% is most used
Rule of thumb for exhaust outlet is 85%.FSA That may change with fan and model, and performance required.

Thia isn't a pitch for Esprit Models, but on the fans listed, most give FSA. A good place to start to find fan size(dia) , plus other info that may help out.

Check here: http://www.espritmodel.com/electric-...-fans-edf.aspx

Consider the when this was made, equipment has come a long way. Numbers are still relivant today.
http://www.rcgroups.com/forums/showt...er+pound+scale

Happy hunting.
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Last edited by CoolerByTheLake; Feb 03, 2013 at 11:09 AM.
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Old Feb 03, 2013, 11:27 AM
Why kamikaze pilot wear helmet
mikes68charger's Avatar
United States, OH, Columbus
Joined Jul 2010
1,098 Posts
Ok the exist is 95mm

The intakes are 105mm tall and 55 wide saped like a D

And a 75x85mm cheater hole.

Dose that help?
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Old Feb 03, 2013, 11:40 AM
Just having fun before I die!
BadLemon's Avatar
DeKalb,IL
Joined Dec 2008
944 Posts
Sounds like it was setup for a Dynamax fan so XPS E-Dynamax should be a good fit.

http://www.xtremepowersystems.net/products.php?cat=33
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Old Feb 03, 2013, 11:54 AM
Why kamikaze pilot wear helmet
mikes68charger's Avatar
United States, OH, Columbus
Joined Jul 2010
1,098 Posts
So could I go with a lighter set up like this?

Haeyo 4.5" shroud, Turbax cut down rotor to fit shroud, Turnigy 4030-880 motor and the ESC is a Turnigy 120a HV..... On 10 or 12s ?
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Old Feb 03, 2013, 12:03 PM
Proud RC Addict
United States, UT, American Fork
Joined Nov 2009
1,565 Posts
Quote:
Originally Posted by BadLemon View Post
Sounds like it was setup for a Dynamax fan so XPS E-Dynamax should be a good fit.

http://www.xtremepowersystems.net/products.php?cat=33
I have the XPS Pro fan that I'm planning on putting in my YA F-18. It's slightly shorter but slightly wider. Apparently slightly heavier but unsure. Anyway, I've been criticized that the XPS fan at just over 3 lbs is too heavy.

EDIT: Oh yeah they're all out of stock anyway.
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Old Feb 03, 2013, 12:05 PM
Just having fun before I die!
BadLemon's Avatar
DeKalb,IL
Joined Dec 2008
944 Posts
Check out "Tumbers" thread on build of the Maverick it sounds like he went with the same setup.

http://www.rcgroups.com/forums/showt...1775985&page=3
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