Thank you for the response - and excuse my limited knowledge. If you talk about smaller hydrostreams, is it variations of the STV hull or different hull types? If it si different hulls, which makes / models? Please explain xt and yt intrapment hull (never even heard the terms...) If you say your 20' voyager spins under 35 does it mean that it will spin out in a turn (not bite an go wide) if you are under 35mph? Thank you. To answer your question about competative speeds. We need to achieve close to 65mph for a 130hp motor - 80mph for a 200 hp and just over 90mph for the open class (most people in the open class fit a Merc 2.4l Brigdgeport or the ex F1 2.5l engine) - any comments?
In South Africa we have a newly formed "hardbottom" amateur racing series. All boats have to be 2 seater with pilot and co-pilot. There are 4 classes Class 1: up to 130hp Class 2: up to 200hp Class 3: up to 225 hp Class 4: open Racing ranges from longhauls (approx 150km say 95miles) and circuits (similar to F1) My questions are: 1. Most of the faster hulls (STV / Eliminator etc) seems be be very suitable for bigger engines 225hp and up Which hulls are more suitable for the smaller engines or could you modify to suit? 2. Most of the topics and videos are about top speed and straight line runs - how do you set up the boats for circuits - obviously you drop the motor and move closer to the transom and prop for accelaration, but are the other issues as well? In general hoes does a STV handle turns and wakes? I would appreciate your comments - thank you