but at 70 there was alot of torque steer, and the boat tried to lunge right, so that prop came right back off.
Hi Steve, check out the steering system first, we haven't talked about that, thats one of the Most important factors to deal with torque steer with the horse power you have, and it can be dangerous, any "slack" in the steering can cause the boat to "lunge right" when the prop gets near the surface, trimmed up, especially over trimmed, when the prop blades grab air, the torque factor changes sides, "slack" in the steering the drive will "slap" over to the right side, causing the boat to steer right Quick, but with a good, snug steering system, it's not that noticable, easilly corrected, after that point the torque steer is not much at all, high speeds seems to reduce the torque steer, in Red's Gold anyway.
The balance of the hull effects torque steer, prop blades is a factor also, especially the props with a "long" rake, cupped, creating a lot of bow lift and torque steer, some props have a lot of blade "root" creating stern lift, when you get a prop with a long rake, and a lot of root, you got a prop trying to lift the boat out of the water, they are fast, but can become very unstable, more apt to chine walk, drifts in turns like an air boat, less boat in the water makes for more speed alright, but only to a point, beyond that point the hull become's unstable, and even dangerous, but safety first means keep the bow down, get some seat time in moderate chop, and learn your set-up. the prop selection process can be very time consuming, and expensive, just Be Carefull !