Henri, I run several of the MVVS .21's in my single engine planes and I have two in my Morris Twin Trainer and two in my VQ A-26 Invader. I've had excellent results with them. The MVVS .21 has excellent transition and throttle response and has an excellent idle. The MVVS .21's are probably one of the best engines you could possibly put into a twin.

MVVS also offers a counter rotating crankshaft for the .21 and you can rotate the exhaust of the engine to either left, right, or rearward. This feature gives you a bunch of possible design and installation configurations.

You could have both heads facing inboard to keep your weight inboard and have both exhaust facing downward or rearward and have one engine with reverse rotation to offset torque.
Pretty cool configuration for a twin!

We have a video tape of the Twin Trainer with two MVVS .21's in a solid hover about 6 feet off the ground and then we do a tail touch and then go back into the hover. We've sold thousands of the tapes so many people can attest to it! It's a fun tape to watch.

The MVVS .21 is one of our best selling engines of all times. Most people have excellent success with them. The engine has a great warranty, we have great service, why Bob Paris couldn't get his to run is only a mystery to me. We are a phone call away or he could have sent the engine in to have us look it over for him.

Mr. Paris, I always hold people accountable for what they say and do, perhaps you should call me privately at (281) 364-8011 and we could discuss your situation, rather than you trash my product and reputation. Mr. Paris, I can't model for you, but I can put good equipment in your hands, and hope you have the ability to do the rest.

Respectfully,

Robert Kozak
President
MVVS Corporation of America