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Forum: Scratch Building, Aircraft Design, 3D/CAD

07-29-2009, 01:12 PM

Replies: 13

Reinforcing balsa spar

Views: 4,402

Posted By Mike Connor

RE: Reinforcing balsa spar

Top and bottom? My design has one 1/4" sq. balsa stick for a front spar. The total wing thickness is 3/8".

Forum: Scratch Building, Aircraft Design, 3D/CAD

07-28-2009, 11:10 PM

Replies: 13

Reinforcing balsa spar

Views: 4,402

Posted By Mike Connor

RE: Reinforcing balsa spar

At the hobby shop today I found some .057" x .177" x 24" CF strips from Midwest Carbon Fiber that may work great when laminated to the front and back of the continuous front balsa spar. Initial...

Forum: Scratch Building, Aircraft Design, 3D/CAD

07-27-2009, 11:14 PM

Replies: 13

Reinforcing balsa spar

Views: 4,402

Posted By Mike Connor

RE: Reinforcing balsa spar

A thicker wing is not an option for this one. I may just go with a one CF spar (proven effective in my deltas) and one partial rear balsa spar.
Thanks, I am learning something new.

Forum: Scratch Building, Aircraft Design, 3D/CAD

07-27-2009, 07:03 PM

Replies: 13

Reinforcing balsa spar

Views: 4,402

Posted By Mike Connor

RE: Reinforcing balsa spar

Normally shear webs would have vertical grain between the spars forming a I-beam. My 1/4" spar does not allow this so I laminated a 1/4" sq. balsa stick on the front and back with 1/16" balsa. One...

Forum: Scratch Building, Aircraft Design, 3D/CAD

07-26-2009, 09:49 PM

Replies: 13

Reinforcing balsa spar

Views: 4,402

Posted By Mike Connor

RE: Reinforcing balsa spar

From the replies here I am leaning towards a continuous spar. If I do that, I have some arrow shafts that I used in a delta that are incredibly stiff and strong compared to balsa and not that much...

Forum: Scratch Building, Aircraft Design, 3D/CAD

07-25-2009, 04:13 PM

Replies: 13

Reinforcing balsa spar

Views: 4,402

Posted By Mike Connor

RE: Reinforcing balsa spar

Thanks for your reply. I thought about having the spar one piece and then I could just use a CF tube and not worry about hi G turns. That would leave the ribs in two pieces though. Am I safe to...

Forum: Scratch Building, Aircraft Design, 3D/CAD

07-25-2009, 01:15 PM

Replies: 13

Reinforcing balsa spar

Views: 4,402

Posted By Mike Connor

Reinforcing balsa spar

I am working on a electric powered flying wing that will have a flat air foil built out of 1/4" thick balsa sticks. It will be sheeted top and bottom with 1/16" balsa sheeting for a total thickness...

Showing results 1 to 7 of 7