SERCEFLYER

What's the largest weight and wing area that is possible with a Cox TD 0.010? Is it possible to design a slow-flying "floater" with this tiny engine?

Thanks

Lynn S

George,
Matchlessaero and Dickeybird are masters at making tiny planes fly with the .010. You should see the flying boat Matchless built. It would take off from a grass strip, and do touch and goes with no wheels!
I think it has to do with weight more than anything. The Littlest Stick I built for my .010 was overweight. How much I don't know. The plans called for 5.5 ozs. It must have been around 8 oz and was on the verge of a stall at all times.The plane would fall like a rock when the engine died. That same plane is now flying very well with a small electric motor at 7 ozs.
It has a wing area of 85 sq inches which is about right for that engine. If you can build a 5 oz plane it should be a flyer, I don't think you can go much over that. A .020 would have been a better choice for my plane.
But what do I know.

DICKEYBIRD

George the .010's I've run have always amazed me with their power. If I was building a clean floater, like a streamlined old timer or the like with a slick glider 'foil or thin flat bottom, 250/275 sq. in at 8 or 9 oz. wouldn't scare me at all.

SERCEFLYER

Dickeybird,

That's amazing. I would have guessed that that's more Pee Wee 0.02 territory! Do you think this would work:

36" wing span Comet Jr Clipper (strengthened for glow power)-- approx 4 oz
radio, linkages, engine -- approx 3 oz
wing area -- approx 150 sq in

My hope is to build a slow 1/8A Texaco-type flyer.

Or, would this type of model have too much drag?

Just brainstorming.

matchlessaero

Hmmm.... what about a teeny PowerHouse? 160-175 squares and 4.5 oz's all up weight. Sounds like it would need a dethermalizer [X(]

There are some new 4 and 5 gram servos out from Cirrus- those combined with a true stick and tissue construction would yield a nice little bird. But can you find tiny little trexlers for it?

SERCEFLYER

M,

What would the span be on a small Powerhouse like that? Do you have any experience with building tissue-and-stick models for a Cox TD .01?

I think I can keep the weight down. I'm just worried that with all that drag, a 36" Jr Clipper won't get enough air speed.

DICKEYBIRD

George, my guesstimate was based on a biplane I did for an exhaust sleeve throttled Tee Dee .020. It has 250 sq. in, weighs 8 oz. with draggy radial cowl, cabanes, N-struts, etc., etc. It will fly "on the wing(s)" at approx. 1/3 to 1/2 power. SWAG calculations in the 'ol noggin computer came up with the guesstimate I posted. Even after factoring in the smaller prop disc of the .010, I think the numbers I posted will work OK. Might be an "uphill glide" like Bmatthews likes to say but that's great fun on a calm day. Your original question was "....largest weight and wing area that is possible with a Cox TD 0.010" If this was a contest, I would try even bigger!

My .010 "KwikStik" has 121 sq. in., weighs 5 oz. and tears around like a blue-***** fly. If I were to double it's size, (AREA, not dimensions!) thin the 'ol Clark Y a little, build up the fuse & stabs from sticks and keep the weight to 8 or 9 oz., it would be a nice, calm weather sport flyer. That's my story and I'm stickin' to it!