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Dassault Alpha Fighter 70mm Ducted Fan EPO Plug-n-Fly (AUS Warehouse)
Highly scaled, large size aerobatic fighter jet with a big 70mm EDF system.
The Alpha EDF jet comes 97% pre-built and includes a powerful 55A brushless 70mm EDF system and steerable nose wheel. This well detailed and strikingly painted jet uses a 70mm ducted fan unit to provide fast throttle response and a high top speed. Scale decals and the addition of two pilots adds to the realism of this model. Battery canopy has more than enough room for a variety of batteries. Small bead-sized EPO foam means more detail and a stronger, stiffer construction. 5 servos control tail, ailerons and nose gear.
This is a very attractive model that draws attention both in the sky and on the ground!
This EDF is great, just maidened mine and it flew suprisingly well. Had read this plane had CG issues with it being nose heavy but i put my CG about 15mm further stated CG in the manual and it flew great. Also must say that you need to increase the LE incidence and decrease TE incidence of the rear stab. Check the forum for more info some guys there deserve the www.link
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Overall Rating
AndyGray
64 likes
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UNRATED
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This plane is great. It's easy to put together, and it flies very stable. Not a lot of power though, so expect a decent take-off runway length. Once in the air though, it's quite good and quite stable.
I am suprised at how slow this thing is actually. I am running it on a 2200mah 4s lipo, and I am wondering if anyone has tried running it on a 5s lipo? The extra revs from the edf might make the difference perhaps?
Note this looks like a twin ducted fan unit, but i's actually just a single fan with two intakes and two exhausts which get merged and split respectively. I'm told this saves weight but the tradeoff is possibly reduced thrust.
It's not particularly acrobatic. Despite having large control surface area, the plane is suprisingly slow. However, all manouvers are quite controlled and the plane doesn't seem skittish at all.
Landing is quite easy, and it has already lasted a few rough landings quite well.
I made a beginners mistake on my maiden flight - realised after take-off that my ailerons were reversed! Didn't end well. However, after gluing and straightening the landings wheels, and gluing a bit of cracked fuselage back together, it's as good as new.
Also, as with all edf's, it's quite noisy
overall a very fun plane with great scale looks. I'd just like to see more performance from it, but since I'm new to edf's, I don't really know what to do to
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Overall Rating
Greg
63 likes
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UNRATED
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Following other members' comments about it being nose heavy I added weight in the form of 3 x 10 cent pieces taped to the very rear of the fuselage pod. It took off & flew perfectly with just a slight amount of up elevator required. I will add another coin to balance it out better. This was with a 2200 30c Zippy battery. It will take a 2450 Turnigy as well but will need more tail weight to balance out the extra battery weight. I didn't change the incidence of the wing or horizontal stabiliser as others have done & it seems fine left stock. On the first flight both the rear landing gears fell out (plastic mounts & all) due to poor gluing at the factory. Fortunately I was able to locate them both after a long search & have now epoxied them back in wthout any further problem. The only other issue is lots of slop in the elevator & ailerons due to the holes in the horns being too big for the clevis pins. Easily fixed by adding replacement horns. Fairly slow & docile in flight but a great EDF trainer. A good candidate for a power upgrade at a later date.
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Greg
63 likes
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I have just had a total motor failure after only 10 flights. The motor seized suddenly in mid flight & unfortunatley because the plane was on the limits of visibility at the time it resulted in a bad crash. It ended up in a dozen pieces due to the brittle EPS foam. In spite of that with time & patience & 5 min epoxy it is now flyable again. From the evidence it looks like the fan was binding on the plastic shroud causing it to lock up. I have now upgraded to a Freewing 70mm unit which fits straight in. This unit pulls 825 watts compared to the underpowered original motor's 672 watts. It should now have a much better level of performance.
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Customer
63 likes
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Something to be aware of is that this plane is not made of EPO as claimed. Its is EPS. Fairly weak & brittle in any sort of mishap. The wing is inherently weak & needs a carbon or aluminium reinforcing insert. My Alphajet lost its starboard wing in flight & that was the end of it. Nothing left but bean bag filler. It broke cleanly at the wing root possibly the result of a previous crash but preventable if it had been braced with an internal spa.
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