Re: Prop Sizes
This would be better placed in the Props section of the forum.
don't know if they will fit your engine or not, the big thing is the spline count for fitting and diameter of the shaft. 9.5 x 11 p is roughly equivalent to 10 x 11 p 9.75x 9.5 would be a lower pitch and would allow your engine to rev more.... could be good or bad depending on your current rpm and type of load the engine is subjected to..... diameter of the prop + or - 1" is for all practical purposes inconsequential as long as it doesn't strike your ventilation plate by being too large a prop.
the numbers and what they mean. in 10x11p the 10 means 10" diameter the x means "by" and the 11p means 11" of pitch (each time the prop turns one revolution the blades would move 11" fwd in the water.... well in a perfect world reality is a lil different but the 11p allows you to compare it to a 9p or 19p and have an idea of what your getting) more pitch should mean faster, less slower... in reality your aiming for a prop that allows your motor to come up to its power band... depending on engine 4500 to 6000 rpm so as not to over rev it nor lug it. think of the pitch as a gear in a cars transmission.... but you only get one so you chooose the one that suits the engine and boat best.
Sean