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Old Mar 26, 2007, 10:12 PM
zaguruinzasky is offline
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Discussion

Self Launch System on a Easyglider or EDF ?


I'm adding an engine over the fusolage of a new EasyGlider and I have a question for the engines experts:

Is it better (for battery duaration) to use a brushless with propeller or an electric ducted fan (having the same thrust) ?

If the EDF is a good solution, what EDF do you think is the good one for the easyglider ?

Will the EDF brake more than a propeller when idle?

Thanks!
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Old Mar 27, 2007, 07:25 AM
Resurgam is offline
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1. I'd guess a brushless with low Kv and a big prop is best.

2. N/A

3. Yes, if you use a folding prop.

Consider posting in the Electric Sailplanes forum, there is a lot of discussion about the EasyGlider there.
Old Mar 27, 2007, 07:30 AM
zaguruinzasky is offline
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ah ok thanks a lot !!
Old Mar 27, 2007, 08:27 AM
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EDF is, in general, best suited to low-drag, high speed airframes - not a sailplane.

- use a prop
- no, not a good solution
- a folding prop presents far less drag than an edf unit
..a
Old Mar 27, 2007, 08:43 AM
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Am I missing something here? Why not just get an Easy Glider electric? Better to have the motor stuck in the front out of the wind than on top of the wing.
Old Mar 27, 2007, 10:16 AM
zaguruinzasky is offline
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It's a video platform with camera over the nose. Can't have the propeller there..
Old Mar 27, 2007, 10:26 AM
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Ah I see.
Old Mar 29, 2007, 02:13 PM
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Quote:
Originally Posted by zaguruinzasky
It's a video platform with camera over the nose. Can't have the propeller there..
Have a look around in the aerial photography forum further down the list. Severaly EasyGlider mods with motors in pusher config. You don't want to go EDF. They are good for high noise / high speed but don't produce enough thrust at your low launch and landing speeds. I use a Typhoon Micro 15 on 3S with an 8x6 prop on a pylon behind the wing in pusher config. Works nicely giving me a sufficiently wide speed envelope with sufficient thrust at low speeds to get out of trouble, but enough speed to also handle windspeeds of up to 45kmh. And with the motor that far back you have a lot of "room" for batteries and cameras up front to get the CG right.
Old Mar 29, 2007, 04:47 PM
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Ok thanx for suggestions!
Old Jul 23, 2008, 03:01 AM
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i have used an edf with great success even at low throttle it would float around i used an easyglider evo 25 1500 mah lipoly ammo in runner 20 40 3500 and a hyper flow it works beautifully even with throttle off the glider floated over 300 acres i know cause were i fly it is 210 acres frome one side of the fence to the other
Old Jul 23, 2008, 10:47 AM
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A buddy of mine just has a slope soarer EG, with a micro camera mounted on each wingtip, with actuated controll via 2 sub micro servos (1 on each-only left/right turning). Pretty sweet, because we can watch from below at what his cameras are seing. Plus when you get two guys to actuate the cameras with a radio, it's pretty cool in high speed dives.

The plane floats around with the best of them too.


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