That's the point...if it's going to happen, I'd rather it happen while testing in the trainer...which BTW is about 6 years old, and while the covering is tattered, and a little bedraggled looking, it's never been crashed.

I don't abuse my stuff, and very rarely have problems...but have been the recipient of several estates with lots of servos, engines, etc. etc. and I've given a bunch of them away...I want to know if they are airworthy first.

I don't bother with junk...just the stuff that passes the preliminary tests goes into the flying test bed.