Got sent this link. The acceleration is unbelievable!

http://uk.youtube.com/watch?v=MR-6dwFVlLs&feature=related

got to say, love that avatar

Hydro's are generally pretty quick, even the electrics, and it's even more interesting watching a full heat racing. Personally I prefer offshore mono's. My last FSRO 3.5 cc was clocked at 62mph. 36,000 rpm through a reduction gearbox! Obviously breakdowns were quite common and quite spectacular (take the head off and tip the bits out!). It is now with a new owner and winning races in the USA.

Great, does a Donald Cambell after turning round, Ray