RE: DL-50 gas engine
The mount died because it was mounted to a metal bench. Bench didn't deflect so mount had to absorb all the vibration, not a very good setup. Good motor, excelent throttle response. If you can get one, they are good engines. Just as powerful as a DA, ran my xoar 22x8 at 7300, with less than a gal through it. Should fly it this week sometime. I'll be posting in the new DL forum, Look for it there. The only downside is that you will have to work to get support. There is now a usa distributer, he posted in the new forum. So, that should make support a little easier.
Take a look at the videos. If you want a couple hundred more rpm you might want to consider a wt201 or 76 carb.
If you have any questions pm or e-mail me.