I have 2 MVVS 77's one in a pattern ship with the long tuned pipe and one
in a Widebody 60 with the shorter tuned muffler. They run great on 10%
Powermaster. They have instant throttle response and a lot of power
especially at lower rpm's. Pulls hard in verticals. Clarence Lee did a review
in RCM and praised the 77, especially it's low rpm pulling power. He used 10%
fuel for the tests. Morris Hobbies in The Woodlands right outside Houston is the
USA distributor.

tommy s