Originally Posted by Richard B
I've never read anything on RIBnet or anywhere else to suggest that either a Vengeance or a Titan would perform any better than a Laser II.
My understanding is that the Laser II is a higher rake prop than the vengeance or Titan. Apparently this gives bow lift whereas the other two will tend to give stern lift. Bow lift, they tell me, is a good thing in lightweight boats with outboards but with a heavy diesel engine on the back, the stern lift may be better. Also the extra torque of a diesel may be better with the chunkier Vengeance or Titan.... (In theory)
The Laser II also has a very special device, (called a hole drilled in it) to help reduce cavitation/ventilation.... again useful for high set outboards. The hole should be bunged up for diesels..... apparently!
This mean for high performance speedboats a Laser II would be better…. But I’m not so sure about my 1.2 tons of Humber!
Then again the Laser works OK on André’s boat…. But even he would like to try a Vengeance for curiosity if he’s honest