Henri,

For fun-fly twins, you might want to check out the Morris Hobbies "Pinwheel Twin" and the "Morris Twin Trainer". You can buy the drawings and building instructions with a complete set of ribs for $34.95.

Both airplanes were designed around your MVVS .21 engines with mini-tuned silencers. As discussed, the MVVS .21 has the extra advantage of having a rotatable exhaust, so that both engines can be configured to point in-wards, while both mufflers face downward.

The Twin Trainer is the easiest twin in the world to fly, even on one engine! You can take off, land, roll, spin, etc...(on one engine)! It's all on the video tapes. The Morris Hobbies airplane tapes are worth watching and you can return them for credit on your order.

Do you have VHS or PAL Video format in Finland?

You can see the details of both the "Twin Trainer" and the "Pinwheel Twin" at the Morris Hobbies website:

http://www.morrishobbies.com/product...5ad452a2af9e60

The "Pinwheel Twin" flies as easy as the "Twin Trainer" and is capable of doing outrageous "Pinwheels" and other Hoverbatic maneuvers like flat spins, inverted flat spins and cartwheels!
Excellent knife edge, and even vertical hover are standard features with this airplane/engine combination.

There is a "Morris Mixer" available that with give one engine full throttle and put the other engine at idle when you apply full rudder. This makes the spins really tight, like you can't believe!

Be sure to check out the real nice VQ ARF Twins if you visit the website. They have the A-26 and P-38.

Hope that helps! Just a suggestion.

Sincerely,
Robert