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Old Dec 02, 2010, 10:30 AM
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Are there any 2M 3axis electric sailplane kits?

I am interested in a 3 axis (REA) electric sailplane in kit form. I have been searching but can't seem to find anything. Does anyone have a suggestion?

I am an experienced pilot, but have not tried sailplanes. I am not looking for anything special, just a good flying plane.
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Old Dec 02, 2010, 10:56 AM
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By a kit, I assume you mean a wood built up kit, rather than a fiberglass fuse ARF.
I don't know of any kits out there with ailerons. The Chrysalis 2M from NSP is a nice plane, it is RES, but maybe you could mod it to have ailerons.
Good luck,
Pete
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Old Dec 02, 2010, 12:15 PM
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What a sad state of ARF-airs for folks that like to build em.

I have a Sig riser that I had started to mod. I was hoping to find a kit, but I guess I will pick up where I left off and hope my mod works out.

Or buy a foamy like an Easy Glider Pro or Radian Pro. I hate to buy a balsa ARF because I would like to build that type.

Thanks.
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Old Dec 02, 2010, 05:05 PM
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Good luck finding much of any kits these days. And you're right, the few balsa kit options out there are all primarily RE or RES.

There were a number of nice plans from the various magazines that are still available. Or just dive in and design your own. If you cheat like heck and start with a known good planform and alter the plans as to airfoil, construction methods and such it's not hard to end up with your own design that borrows heavily from the inspiration that got you going.
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Old Dec 02, 2010, 07:49 PM
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There is this plane http://www.hoelleinshop.com/e-vendo....%3D40%26p%3D40, which also comes in an aileron version.
If you don't mind the V-tail, this one has flaps and ailerons: http://www.hoelleinshop.com/e-vendo....%3D40%26p%3D40.
From what I've heard, shipping to North America is problem free.

Dieter Mahlein, ShredAir
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Old Dec 02, 2010, 08:17 PM
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Old Dec 02, 2010, 10:49 PM
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The Jester is a nice model but it's not an aileron design that the OP is looking for.
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Old Dec 03, 2010, 01:04 AM
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rea

Arthobby.com ?
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Old Dec 03, 2010, 04:56 AM
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Thanks. I hard a hard time understanding the German website, because while there is an English front end the descriptions are still in German.

The Art Hobby electro gliders are really beautiful. They are more like ARF's than kits, but if I go the ARF route they would probably make more sense than a foamy like a Radian or Easy Glider.

Please keep the suggestions coming.
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Old Dec 04, 2010, 09:13 AM
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U2, in addition to the Chrysalis, let me add a couple of other sites you may be interested in:

Sky Bench: Ray Hayes has several designs that he produces kits of. None have ailerons (because they don't need them) but you could always mod the designs if you had a preference for an aileron wing. Look for the Oly II, Oly IIS, and the Oly III. A lot of work went into these designs to make sure they were great flying planes, which seems to be your primary objective.

Stevens AeroModel: The HeliumMG has been getting a lot of praise on RC Groups for its very good flyability and ease of construction. Again, you could reduce the tip dihedral and add ailerons during the build if you wanted them. The landing gear is optional.
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Old Dec 04, 2010, 09:19 AM
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Maybe this is more like what you are looking for ?

http://www.hyperflight.co.uk/product...=TM-CARBON-MAT

It is a good design and has done very well in UK league comps.

Pete
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Old Dec 04, 2010, 11:37 AM
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Thanks again. More good suggestions. I contacted Bill Stevens to see what he thinks about adding ailerons. I have built several of his great kits. I know ailerons aren't necessary for a sailplane, but I find it disconcerting when I am used to three axis flying and find it disconcerting to me moving the left stick to control a rudder which isn't there.

The hyperflight was very cool and inexpensive, but it looks like it has giant flaps but no ailerons.

The Art Hobby Sky EV is looking pretty good to, though it isn't quite the build I was looking for as it is mostly prebuilt. They seem to have a nice line and replacement parts, which is good if I am not building it myself.
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Old Dec 04, 2010, 11:47 AM
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The rear spar on the Chrysalis 2-meter was put there in part as a foundation for trying ailerons and flaps on it later. However,there has never been enough customer demand for that to actually get around to trying it.

As far as your problem with which stick to use, it's customary to put the primary roll control on the right stick. In the case of a R-E model, that means the rudder.

However, with modern computer radios there is another option. Put the rudder on the left stick, then mix it 100% to the right stick. That way you can work the rudder from either stick.
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Old Dec 04, 2010, 12:38 PM
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Quote:
Originally Posted by Don Stackhouse View Post
The rear spar on the Chrysalis 2-meter was put there in part as a foundation for trying ailerons and flaps on it later. However,there has never been enough customer demand for that to actually get around to trying it.

As far as your problem with which stick to use, it's customary to put the primary roll control on the right stick. In the case of a R-E model, that means the rudder.

However, with modern computer radios there is another option. Put the rudder on the left stick, then mix it 100% to the right stick. That way you can work the rudder from either stick.
Yes Don, I know I could do that with my radio, but I'd rather have ailerons. I have spent many hours practicing my coordinated use of rudder and ailerons.

But, I think you have really gotten me excited about putting some ailerons and maybe flaps too on the Chrysalis! Would you be so kind as to suggest how you would go about doing it. I am an experienced builder so just some suggestions as to dihedral, and relative dimensions would be all it would take. This really seems like the way to go. I'll post a build thread which might be of interest to someone, but probably not many!
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Old Dec 04, 2010, 01:17 PM
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I planned to make the slots in the ribs for the rear spars wider, enough for a second set of spar caps just behind the original ones, and a hinge gap on the bottom of the outer panels for the ailerons, with a smaller hinge gap on top (just enough for the reflex) on the inboard panels for the flaps. Build the wings with the doubled rear spar caps, cut them free with a razor saw, sand everything smooth, shear web the rear spars. Might need some diagonal bracing to get enough torsional stiffness.

With efficient enough control surfaces, there is not problem running the same polyhedral as the RES version, we proved that on our old Monarch 'CX' RCHLG. The plane could be flown either way, with the rudder or with the ailerons, or by adding some excess rudder you could get roll rates in the Pitts Special category, again, as we demonstrated on the 'CX'. You could also get away with reducing the dihedral, but then you would also need to reduce the vertical fin area to maintain the spiral stability and resistance to dutch roll.

I did design a set of ribs with these mods. However, I'd really rather not use our customers as guinea pigs. I'd prefer to get a set of these ribs cut for myself and try it out, then we can swap out the ribs in your kit after that, if you're really dead set on adding ailerons. Might take a while, though, my plate is pretty full at the moment.

Of course, if you buy the stock kit and do the mods on your own, I can't really stop you.
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