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Old Aug 02, 2004, 07:22 PM
HeliAP'er!
Hogster's Avatar
Surrey, UK
Joined Aug 2003
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Looking for plans for a small sailplane which can power up to a height and then soar

Bit of a fuzzy title as it's a bit of a fuzzy question! Having essentially completed my first ever built-up balsa plane (a 'Tiny'), I'm keen to build another one, but this time one which can soar. The only plane in my collection at the moment that can vaguely 'soar' is my Protech Unlimited 600 .... but that's a heavy thing and it probably 'glides down quickly' more than it 'soars'!

So I'm looking for plans for a smallish sailplane (1 metre wingspan perhaps?) which can get itself up to height using a small electric motor, and then cruise around, possibly catching the odd thermal - basically staying up for a long time and not having to rely on a motor to keep it up! It's getting a bit boring having all my flights limited by the life of the battery's charge (even with Liths!).

Can anyone recommend anything to look into? Sorry if that sounded mushy!

Any replies are most appreciated!
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Old Aug 02, 2004, 08:20 PM
Ascended Master
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Palmdale, CA
Joined Oct 2000
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Look for something with a 380-400 motor. 7 or 8 cells.
Here's a couple of mine.. the Orion is from a Westwings kit. about 54" span. I mod'ed it to vee-tail.. geared
The Allegra is a 2M competition design by Dr. Drela.. labor intensive to build, a very good flier..direct
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Old Aug 02, 2004, 08:43 PM
HeliAP'er!
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Surrey, UK
Joined Aug 2003
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Two interesting options there! ... but I think I'll probably put an upper limit of 1m on the size, or as you've said it starts to become very labour intensive. The 'Thunder Tiger E-Hawk 1400' caught my eye in this thread, but that's a bought kit - I love the feeling of building something from scratch, so it's plans I'm looking for!

I too was thinking of power plants around the S300-400 size, possibly smaller .... direct drive would be nice too.

When you say the Orion was a Westwings kit, what exactly do you mean? Were the wings and fuz pre-built and covered, or were the all the parts marked on sheets of balsa?!

In my view of things, building something from a plan is better in two ways - cheaper, and you can build as many as you want!

Keep 'em coming guys, and thanks for your suggestions Sparky Paul!
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Old Aug 02, 2004, 09:21 PM
Ascended Master
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Palmdale, CA
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The Orion is a classic kit... punch the parts out of the sheet, stickum together, cover.. I used Japanese tissue and clear dope for the wing and tail.
The GP YardStik. although an ARF, looks built, not a foamie, and is a good performer, with 8 cells, not the recommended 6.
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Old Aug 03, 2004, 07:54 AM
HeliAP'er!
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Surrey, UK
Joined Aug 2003
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This sort of thing looks RIGHT up my street:

http://www.rcgroups.com/forums/showt...3&page=3&pp=15

The Zombie. Now if only I could find plans for it!!!
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Old Aug 03, 2004, 09:57 AM
Registered User
Arlington,VA USA
Joined Jan 2001
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Did another 1-hour flight with my Zombie this past Sunday....
If you go this route, build it light. Check out the Zombie thread for details.

Pullin'
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Old Aug 03, 2004, 12:11 PM
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Joel Shreenan's Avatar
United States, GA, Flowery Branch
Joined May 2001
1,345 Posts
Skimmer 400

Quote:
Originally Posted by Hogster
So I'm looking for plans for a smallish sailplane (1 metre wingspan perhaps?) which can get itself up to height using a small electric motor, and then cruise around, possibly catching the odd thermal - basically staying up for a long time and not having to rely on a motor to keep it up! It's getting a bit boring having all my flights limited by the life of the battery's charge (even with Liths!).

Can anyone recommend anything to look into? Sorry if that sounded mushy!

Any replies are most appreciated!
Hogster: From what I've seen on the EZone, the Hobby Lobby Skimmer 400 would probably meet your specifications. Granted, it's a DIY kit instead of a set of plans, but the price is right.
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Old Aug 03, 2004, 12:28 PM
HeliAP'er!
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Surrey, UK
Joined Aug 2003
8,226 Posts
Looks very sexy! I've bookmarked that page! The Skimmer or Zombie are exactly the sorts of things I'm looking for - they can get themselves up to a height with a cheap motor setup and then cruise around for ages. EXACTLY what I'm looking for!

I found this plan earlier:

http://members.fortunecity.co.uk/slm...S/T-Dancer.zip

which looks interesting ... this is what the plan looks like:




As you said, the price is certainly right for that Skimmer!

Thanks for posting!
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Old Aug 03, 2004, 01:05 PM
Ascended Master
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Palmdale, CA
Joined Oct 2000
13,499 Posts
That's an interesting way to use one rib for all locations..
Makes the tips kinda thick though.
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Old Aug 03, 2004, 01:16 PM
.: Looking for Thermals :.
Ricardo RW's Avatar
Chile, Quinta Región de Valparaíso, Los Andes
Joined Jun 2002
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Sparky,

What kind of boom did you put in your Allegro? In the picture it doesn't look round.

Ricardo.
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Old Aug 03, 2004, 02:42 PM
Ascended Master
Sparky Paul's Avatar
Palmdale, CA
Joined Oct 2000
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Quote:
Originally Posted by guru_dick
Sparky,

What kind of boom did you put in your Allegro? In the picture it doesn't look round.

Ricardo.
.
It isn't.
I couldn't get a CF boom, so I made one from 1/8"x1/4" spruce, triangulated.
looks like this...
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Old Aug 03, 2004, 11:10 PM
HeliAP'er!
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Surrey, UK
Joined Aug 2003
8,226 Posts
Keep the suggestions coming! Off on a 3-day holiday now so won't be around to browse!

Talk to y'all later!
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Old Aug 04, 2004, 11:36 AM
.: Looking for Thermals :.
Ricardo RW's Avatar
Chile, Quinta Región de Valparaíso, Los Andes
Joined Jun 2002
864 Posts
Quote:
Originally Posted by Sparky Paul
.
It isn't.
I couldn't get a CF boom, so I made one from 1/8"x1/4" spruce, triangulated.
looks like this...
Did you have problems with weight, I mean..., the Allegro, was it overweighted?

Ricardo
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Old Aug 04, 2004, 12:04 PM
Ascended Master
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Palmdale, CA
Joined Oct 2000
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Quote:
Originally Posted by guru_dick
Did you have problems with weight, I mean..., the Allegro, was it overweighted?

Ricardo
.
Ricardo, it weighs 25 oz./708 g in flying form.
The design weight is 662 g./23.5 oz
And it's 96% of the actual size... I found my printer scales .pdf images to that amount.
I like the way it flies though.
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Old Aug 05, 2004, 05:44 AM
Flap chap
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Most Southern England, Brighton UK
Joined May 2004
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The Plouf sounds interesting for conversion to an electric sail plane. I built with the original winspan ( 28 inches ) and built a sort of electric glider, but i am limited with the 2 channel control .
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