Van's RV-9A in Aurora

The Big Picture

The Big Picture
Flying! 8/28/2011

Thursday, June 25, 2009

3 hrs
Started bending the longerons.

But first, bought a big-ass vise from H&A Depot. Had to remove the old vise and install the new one first. Also got the 2 day shipped box from Van's - on the 3rd day. Other than the difference in shipping, it's not a problem.

Started trying the Orndorf method of bending, both together. This ended up a dismal failure. It was impossible to control the off axis bending, and there was no good way to measure to the templates. So after about 15 minutes, gave up on that and went one at a time. This works just fine, but it does take a while to get over the learning curve. Fortunately, you can abuse these angles, and short of cracking them, it shouldn't be a problem. But (this just occurred to me) a 5 foot section to practice with first would be an awesome idea.

It doesn't take too much of a whack to set the bend. Start with easy hits, and adjust up. Don't whack the hell out of a single part, or you'll spend a bunch of time undoing the too sharp bend you just installed.



Got both of them pretty close, should be able to tweak to pretty damn close in about an hour, then time to start the forward bend and twist.