Archie,

Todd Syssa was visibly excited over the boost he saw. He explained that his "normal" engine would turn the Vess 18x6 at around 8300-8400 on standard muffler without the stinger muffling inserts.

The engine was obviously very happy turning the 9400 on the pipe. Keep in mind that his exhaust timing is very long therefore the engine will tend to take advantage of light loads and spool up. Timing of our more typical glow 2 strokes in much more conservative, designed to allow more load at lower rpm.

An 18x6 is of little use to us in Pattern as Ed and Dave have mentioned several times.

To me, the proof came when we ran the 18.1x10 on my test bed. This model was around 11# 11 ozs as flown and is larger than most pattern models we fly today carrying over 1150 square inches of wing. Ed did a vertical rolling check to over 1000 feet and it still had plenty of beans.... we can't fly over this height at our field so it was cut short. This is a new engine afterall so that's why we have been excited about the prospect. After full break in, we expect better output

Matt