"Barton...
Graham speaks the
"Barton...
Graham speaks the truth.
The reason you can't get both hole shot and top end out of one prop is due to engine RPM, or lack of. The smaller the pitch# of the prop, the faster it will spin for hole shot. It lets your engine RPM speed up faster when you're blasting off. Pitch # of a prop is similar to the thread pitch on a screw or bolt. It is the theroetical number of inches in length that the prop would screw itself through a solid (or water with no slippage)in one revolution. So a higher pitch # will travel alot farther in one turn than a small number. This is good for top end -- BUT-- it takes big hp to do that and to spin it at take off speed. A small pitch causes the engine, and prop to simply run out of RPM as you're at top speed. There are a lot of prop designs out there to try and find a happy medium. Variable pitch props,, 2,3,4,5 blades, cup blade designs. Just about anything if you look a far enough. An aluminum prop works great for most uses, especially in unknown water if there may be a chance of hitting something under water. Aluminum blades have a tendency to flex slightly straight under heavy load and lose performance, but are much cheaper than Stainless props, and more forgiving on lower end shafts and parts if they smack an obsticle hiding under the waves. The blades will fold over and .... cross your fingers. Stainless props are preferred for better performance as they don't flex straight as much (or at all). If it hits something underwater, you wreck the prop, bend the prop shaft, possibly spilt the bullit, bearnings etc... They are much more expensive to buy and to replace if they go missing all of a sudden as they are attractive to other people walking around the docks. Get a lock for it so it stays on your motor.
Wrench"