10foot weed wacker giant

[NeroRavencoat1999]

I'm currently in progress on a giant simple design 25cc weed wacker giant with a 10 foot span but I'm having some difficulties. For one is a supply issue that can be easily solved with patience with the hobby shops having the material in stock. The big one is spars. I want to construct the wing with pink panther foam ribs on a single spar, and monokoted, but sourcing the material is proving difficult. I need it to be as strong as possible, light as possible, and most importantly cheap as possible. What would be my best bet for that?

 

[Hondo76251]

I'd work the other way... get an idea of what materials you have cheap and easily available and design an airframe around what you have.

Improvise, adapt, and overcome Sailor!

 

[FDS]

All the similar builds I have seen have used Aluminium spars, Lowes sell one that FT and Peter Sripol have used to great effect on their big wings.

 

[NeroRavencoat1999]

I'll have to check on that, in the meantime I was suggested a poplar 1x3x10

 

[Arcfyre]

Your best bet would probably be to get two 5 foot pieces of aluminum bar stock and use them for a spar. Using a spar for each wing would give you the option of making them removeable for transportation. Alternatively you could use a doubler plate and rivet them together to get a ten foot spar.