Hello all,
I have a Honda 50 four-stroke on a Stinger 160 tunnel hull, which weighs about 1500-1800 lbs, depending on loading. It currently generates 5500 rpm's at WOT and a top GPS speed of 30.2 lightly loaded in perfect conditions, with an 11.1x14 three-blade aluminum prop. With 2 people and a full load, I can hit 27mph.
I'm repowering to a Yamaha 70 four stroke. I'm hoping to get better top-end and cruising speed; I don't care too much about quick hole shot. Any thoughts on initial prop composition and pitch to try? I thought I'd try a 17 or 19 pitch aluminum 3-blade then maybe switch to a SS 3-blade after determining the best pitch. Seems like the 19" pitch would work OK with the bigger motor?
Any input from the prop wizards here would be appreciated.
I have a Honda 50 four-stroke on a Stinger 160 tunnel hull, which weighs about 1500-1800 lbs, depending on loading. It currently generates 5500 rpm's at WOT and a top GPS speed of 30.2 lightly loaded in perfect conditions, with an 11.1x14 three-blade aluminum prop. With 2 people and a full load, I can hit 27mph.
I'm repowering to a Yamaha 70 four stroke. I'm hoping to get better top-end and cruising speed; I don't care too much about quick hole shot. Any thoughts on initial prop composition and pitch to try? I thought I'd try a 17 or 19 pitch aluminum 3-blade then maybe switch to a SS 3-blade after determining the best pitch. Seems like the 19" pitch would work OK with the bigger motor?
Any input from the prop wizards here would be appreciated.