WOW! Good info!

And "Rosko_Racer": SWEET patterns! I'm gonna need more nose-cones...

Something occurred to me this morning; the FINS may be causing the cone to warp into the exhaust stream. The "corners" should be pretty stiff, but the sides have the fins are a less stiff, and carry the aero loads of the fins. I'll look into adding a bit of beefage in that area. None of my cones ever had fins, so they didn't have these loads.

Thanks, Guys!

__________________
John Adams
"There is a lot of rocketry under 20ns"