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Oct 01, 2016, 02:56 AM
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Maiden of my new epp plank wing


I like the way planks fly, nice turns and loops. Couldn't get this one to roll yet as I have the throws way down. 275 grams, 7 inch prop, 2s 900 mah lipo, epp foam and I laminated the fuse and tail to make it much stronger. A real glider.
Slightly forward swept. Haven't quite got the cg worked out yet.

Flown this one for about an hour now. Need to keep the momentum up as the motor and 2s lipo are small not very torquey. Also not for the wind. But I love flying it. I doesn't stall much, just mushes until it lands.

Maiden+1 Flight Lighting EPP Plank (0 min 59 sec)
Last edited by RightBrother; Oct 12, 2016 at 02:32 AM.
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Oct 08, 2016, 09:11 PM
Out Standing In The Field
RexGalore's Avatar
Thanks for taking the time to make the video and post it. I think it's the only review of this plane in the world!

I saw the thread in the RCG Foamies Forum about it, and it seemed interesting. A good size for visibility, but still easy to transport. Tractor motor so you don't cut off your hand or sound like a dentist's drill. EPP so it'll bounce, not break. And I always wanted to try a forward swept wing plane.

$30 for the kit on Aliexpress including shipping is very inexpensive, but the $17 for the motor really isn't great, especially since you've verified my impression it would be weak. Are you pretty much at full throttle in the video? Do you think that the fuse size could accommodate a 3S battery and (maybe) a bit heavier motor without having to add weight to get the CG right? I agree that a plane's got to roll, or it's not much fun to fly!

Thanks again for the report.
Oct 10, 2016, 04:21 PM
Registered User
Thread OP
Hi. Thanks for the response and the link. I am very interested in what others come up with this bird.
I have only flown it for about an hour (rainy season started here) and am still trying to get the feel for it. It is good epp and tough. I may have screwed up it's flight characteristics by laminating the tail (tail has no carbon rods) and fuse as the laminate weighs about 12 grams a page and I used almost a page just on the tail . I have added no weight to the nose but I think it is still a little tail heavy but it flies fine for me in no wind or even a little wind. As I said, in the wind it seems a little tail heavy and will try adding a little weight to the nose.
I think the motor is fine and would scream on 3s but the compartment would be tight unless you had a small RX which could tuck up between the wing and fuse (inside the fuse). 3s might make it a little nose heavy. The battery sits along side the ESC inside the fuse and with the wires, it will be tough to get it to fit (just guessing as I dont have a 3s right now). Since I have the ESC mounted outside I probably could get a 3S in there.

The elevon comes attached and I had to bend mine until it cracked (but still stayed attached) to get it loose enough to work well. I dont think it will work well until you do that because the ends of the elevons dont rotate as much as the inside elevon - the hinge is just too stiff. The elevons are stiff enough laterally. There are two carbon fiber rods but do not run the full width of the wing so there is some wing flex if you hold it at both ends and kind of bounce the middle. Doesnt seem to affect flight adversely. This is not a ds wing, it is just for kind of lazing around the sky. Not sure how it would fly with 3s and high speed turns. Again just guessing.

The ESC they sent me has a problem that if you power it up first and then the TX, the motor will start running and cannot be controlled by the TX. If you power up the TX first, then all is fine. Never had that happen before. Also, the ESC gets too hot inside the fuse on a warm day and it refuses to start the motor - so I mounted my esc on the top of the fuse and it works great - no problems with heat and the battery stays cool inside the fuse. But its an ugly fix so you must at least cut some air holes in the fuse and maybe add a little air scoop.

The horn clevis is light weight and was missing the screws so I used my own screws and stripped out the plastic so just hotglued the clevis to the control rod. Ugly fix but works for me. I just put zbend on the other end and did not use the little adjustable thingys they sent and probably should have but zbend works fine for me.

No, i never run it at full power except on takeoff and you can takeoff at 75% power. So, I suppose you might be able to roll it. I havent had time to get comfortable at that level yet and am still having fun just flying inside and outside loops. It does take some momentum to carve some steep turns but then I am not flying at full power. Still for me it is great fun and I think a great price for a tough plane to get a plank. I have made my own planks in the past in EPP and this beats them hands down but then I am a hack with poor flying skills (still learning inverted flying) and have only about 100 + hours in the air.

The prop adapter is necessary and works. I have doinked it a few times on the nose - no damage but then that might be because I laminated the fuse with copy shop laminate. About 80 micron stuff.

I though the kit was especially easy to assemble. It came with only the first page of the instructions but there are online pictures and I assume they would ship the US version with good instructions.

Overall I love the plane and am happy just looping and carving and hope to get it set up better and do some rolls. Hope that helps some but probably just increases the confusion. I don't think you can beat the price though.

Now the caveat: I'm not sure the same electronic components I got will be the same ones you get as I got this from a reseller in China and they may have substituted cheaper components. So there is that.
Last edited by RightBrother; Oct 10, 2016 at 04:58 PM.
Oct 10, 2016, 05:55 PM
Out Standing In The Field
RexGalore's Avatar
Thanks for the expanded report! I will probably order up the "kit" version, and source a motor and ESC separately. That provided ESC sounds dangerous! The most unsafe ESC I had was one which would not shut down the motor when transmitter signal was lost, but it didn't go to full speed if initialized when no signal was present. As I was reading about your ESC heat problem, I had thought of mounting the ESC outside the fuse - which I found out after continued reading - is what you did.

I haven't had a lot of luck with EPP. I have a Techone Yak that has such a weak and wavy horizontal stab and elevator that despite my attempts at reinforcing and bracing it really hurts how the thing flies. The laminating film is probably the best way to stiffen it up and improves the plane's flight performance and protects it from dirt & gouging, so I think it's a good idea that you've done it, despite the weight gain.

Thanks again for your reporting on this unreported plane!
Oct 11, 2016, 12:41 AM
Registered User
Thread OP
Great! Looking forward to your experiences.
I got lucky and got to fly today - 3 batteries and timed one of them at 12+ minute flight including lots of turns, loops and even some rolls. The rolls are ugly - very slow, start out nice then lose a lot of altitude. Could be I dont have enough throw. But really a fun little plane to fly. Never got tired or bored after 30 minutes of flying. My cg is no where near where they suggest though - mine is at about 3cm (not 5cm).


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