06-07-2016, 12:37 PM
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Craftsman
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Join Date: Feb 2009
Posts: 463
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They are a bit thicker than super thin wall, but are not thick.
The two 13.5" long 2" tubes and a 4" coupler weigh 2 3/4 ounces, the nose cone with the bottom removed weighs 1 3/8 oz. the cone is 11" long without the shoulder so it will make a 38" long model.
The kit does include an extra coupler and a 1" long body tube piece so on one model I inserted the spare coupler part way into the rear of the model and glued the 1" long piece on the end and was able to stretch the length 1 or two inches.
As a reference two 17" long lightweight bt-80 tubes from bms with a 4" coupler weigh 3 3/4 ounces. The lightweight cone I get from sirrius rocketry weighs 1 3/4 ounces with the base removed.
Frank
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Originally Posted by AstronMike
Was wondering when you'd get around to a Concorde-ish sort!
This is similar to the BT-70 Concorde I flew the heck out of a few years ago, primarily on E20s. That used a regular 34" BT-70, with a rolled paper cone for the NC. Angled rear tube, as well, no charring issues there. Readiboard wings/tail, and BT50 pod. Great flyer, need to make another.
Thinking of making a 3" Concorde, using two ply standard foamboard, as a reasonable HPR glider, without being too large. I motors seem to be the best 'cross' between size/power, and affordability. Yeah, this will be old school Free Flight, so it'll probably glide nice and straight.
Seems you're getting mileage out of those Cosmic Interceptor parts....wonder if I should get on board? How heavy is the NC, and is that a BT70 or 2" heavy walled tube?
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