Thanks all for your kind responses and input.

Sprink, I have already exchanged a couple of e-mails with Neil but he has only mentioned that they are more fuel efficient than other 4 strokes on the market and he has no exact figures on fuel consumption. He's really a nice guy.

Engineman, 10 minutes on 12 oz looks quite interesting for a 150 engine. I have a laser 80 too and get almost the same run times on a 6 oz tank as yours.It looks that you're living near where the engine is made , are there many laser flyers around there ?
Do you know anybody who has converted one of these engines to run on Gas (Ignition)?
I have always been interested to convert a four stroke to run on Gas and think that at least from the Metallurgy point of view, Lasers must be good choices, any suggestions ?

Hobbsy, I really love those twins, specially the sound might be great !

Cheers,
Hamid