How much surface wobble is ok?

[aerohead]

Originally Posted by meanderingthemaze

The goal here is to come up with a simple-to-construct, cheap, light, aerodynamic panels, which aren't a hazard, such as being extremely flammable. They need not be very strong, only strong enough to hold up under head winds on the highway, and everyday driving conditions, NOT collisions. The strength of the chassis is all going to be in the tube frame. Passenger safety will come from that. The panels are only to reduce drag, which is why it would be great if they didn't weight anything.

Maybe I should posit the question this way. Would stretched (non-doped) fabric be better than nothing? If so, how much better, as compared to a tube frame (think dune buggy)?

I think that anything to control the airflow is good,whatever it is.
My late neighbor Bob Parsons was not above using ordinary cotton bedsheets on projects.He did dope the fabric to weather stabilize it.Not pre-preg carbon-fiber/epoxy in weight,but not shabby, considering expense!

[meanderingthemaze]

Originally Posted by aerohead

I think that anything to control the airflow is good,whatever it is.
My late neighbor Bob Parsons was not above using ordinary cotton bedsheets on projects.He did dope the fabric to weather stabilize it.Not pre-preg carbon-fiber/epoxy in weight,but not shabby, considering expense!

OK, that's what I'm talking about. I could find a couple sheets at 2nd hand store for couple dollars! Hahaha.

I was thinking of a PVC substructure, chicken wire and some fabric like a sheet. If I ever get this project off the ground, I'll post pics!