Re: Force 120hp
Re: Force 120hp
It is difficult to recommend a prop by email; There are so many variables
Do you want blazing hole shots? Do you want maximum top speed? What is the load you are carrying: Multiple batteries, multiple livewells ,number of people etc> all these influence the correct prop.
That said, you want to prop the engine so that at full throttle the engine runs at or close to manufacturers stated speed.
That said, a 120 on a 17 foot boat is probably going to take a 19 or 21 pitch prop. (Diameter is set and usually is about 12 3/4 in to 13 in.) Performance will vary with hull design, prop manufacturer and prop design. If you can get a loaner to test from your dealer that would be great.
I personally would start out with a 19 pitch aluminum prop to use as an extra for emergencies and see where to go from there. Another option is to buy one of those replacable blade props. You can change various pitch blades on the hub for less than buying a new prop.
For your main prop Stainless is an excellent choice because they usually run about 200 RPM faster than aluminum. However, if you habitually boat in rocky or stump infested water, a composite may be what you want. The blades break away, protecting the lower unit somewhat.
