I bought one of the XYZ20 engines from VV. Installed it in a Seagull Yak. The engine runs very well and I think will be close to the power output of a DLE20.

I did find two things I didn't like. The choke does not hold well in the closed position. It can easily vibrate open from flipping the prop. Secondly, the prop shaft threads are an uncommon 8mm x .075. They should have made it 8mm x 1.00 or 1.25 which are fairly common size. Try finding a 8mm x .075 nut or spinner adaptor nut if you should need one.

To be fair, I spoke with Tom Denny from VV and he said he will ask the manufacturer to resize the prop shafts in the future to the more common 8mm x 1.00. He also said he has a supply of nuts in the .075 thread if a replacement is needed.

One other nice thing about the XYZ20 engine is that it has a standard RCEXL ignition rather than the goofy #4 ignition that comes with a DLE20. I like that. My engine idles very nicely at about 1700 rpm and when you throttle down from high rpm, it goes straight to the idle rpm without the delay that occurs with a #4 ignition.

I've only got about 1 hour of run time on the XYZ but other than mention above, it runs pretty good.