Originally Posted by Spookeay
I do that to all of my new ones now. I know they are going to bend or brake. I got about 20 of them and threw them in my junk drawer. Also I ordered some 3mm Stainless rod and use that as the smooth motor shaft for the collets now. It's hard to bend.
I've done the same things with a few of my Dynam motors with 3mm shafts, although I didn't think of using stainless rod. I just used 3mm music wire stock. Worked OK but still bends under a shock load.
May I ask where you located your 3mm stainless rod material? I'd like to give that a try.