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Feb 03, 2013, 07:57 AM
Why kamikaze pilot wear helmet
mikes68charger's Avatar
Discussion

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
Last edited by mikes68charger; Feb 03, 2013 at 08:05 AM.
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Feb 03, 2013, 09:39 AM
Do it Right, the first time!
CoolerByTheLake's Avatar
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.
https://www.rcgroups.com/forums/show...er+pound+scale

Happy hunting.
Last edited by CoolerByTheLake; Feb 03, 2013 at 10:09 AM.
Feb 03, 2013, 10:27 AM
Why kamikaze pilot wear helmet
mikes68charger's Avatar
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?
Feb 03, 2013, 10:40 AM
Just having fun before I die!
BadLemon's Avatar
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
Feb 03, 2013, 10:54 AM
Why kamikaze pilot wear helmet
mikes68charger's Avatar
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 ?
Feb 03, 2013, 11:03 AM
Proud RC Addict
Quote:
Originally Posted by BadLemon
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.
Feb 03, 2013, 11:05 AM
Just having fun before I die!
BadLemon's Avatar
Check out "Tumbers" thread on build of the Maverick it sounds like he went with the same setup.

https://www.rcgroups.com/forums/show...1775985&page=3


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