Polyethylene body

[Jaydee]

I wonder if it is possible to make a rotary mold Cobra body like kayaks etc?
They are tough as anything, won't crack when impacted.
JD

[awfink55]

Hi JD,
A roto-mold Cobra PE body would be a great and inexpensive way to build a Cobra. There are some drawbacks to the idea, though: there is no twist rigidy support with a PE body, PE shrinks and expands at a great rate, especially a problem is direct sunlight (when the plastic becomes soft and malluable), paint won't adhere to PE (or at least for a long period of time), direct sun will fad the colorant in the PE, you would need a 1 inch wall thickness for a piece that size and a need for steel reinforcements for supports, these are just a few that come to mind. Years ago, a toy company sold a kids foot powered polythe car. They only lasted a few years before disintergrating. But, I like the way you think!!!!
Best, Art

[Tommy]

how about this method?

[Buzz]

You're all in the dark ages - how about this: Shelby Cobra ?

[Jaydee]

Wow. that was impressive video. No doors and tilt front end. Next a Cobra will be as common on the road as a Toyota.
JD

[Gav]

They would melt.
PE starts to flop at anything over 80deg C

[Gav]

double post

[deano59]

a wheelie bi cobra lol mind you they make some impressive boats out of the stuff now days