I think this has come up before, but has anyone collected reliable, accurate data on the effects of cambered (curved) ribs? I know that they have a positive effect, but I am curious as to how beneficial this is to flight time. I plan on trying it out myself, but wanted to do some "research" first.
2012-2013 Building Event Captain Rule 7d. "Event Supervisors are allowed to break any competitors' devices" -bearasauras
illusionist wrote:Has anyone used basswood for the spars? If so, how does it compare to balsa (both in 1/16 x 1/16) in terms of performance and weight?
I tried, but without glue, which means I cut all the pieces and massed them in length, but it would have made a helicopter well over four grams with two rotors. I personally don't recommend unless you motorstick is super light, or you basswood is very low density.
Nothing is worth being over the minimum weight! Nothing! Well except maybe just enough to make sure you don't get second tiered. But NO other reason.
Remember, balsa is hugely variable in its qualities. If you want stiffer spars, cut many, sort out the ones to target weight, then select the stiffest. You will find a big difference for seamingly identical weight and size spars. You can improve stiffness a LOT that way. Course you throw out a lot of wood unless you can find some less critical use for it. But you will get significantly better helicopters.