Originally Posted by
speedracerntrixie
Thank you CP. I think using composites could really make some bad ass 1/2A speedsters. Very easy to make a small wing mold that would employ a 1/32 balsa core with a live aileron hinge. Even opens up the possibility of a CF mini tuned pipe and even some props.
I certainly haven't explored all the possibilities but I built a few fully enclosed piped .061 [1cc] Speedsters years ago with the help of a Harry Higley "How To Do Composites" book.
I can't see any better way to build a 1/2A Speedster fuselage...[than FG] .but I don't think solid balsa sheet can be beat for the wing and tail surfaces...!
For an open exhaust model...70 sq inches of airfoiled 1/4" thick balsa wing is as small as I dare go for a RTF weight of 9 ozs
With the extra weight of a tuned pipe...100 sq inch wing of 1/4" thick balsa ... for a RTF weight of 11 ozs.
Figure 150 mph is doable with an open exhaust 1 cc engine and possibly 160 mph with a "high timed" piped engine.