Originally Posted by
Prospersigman
I have the Acme 2247 (15.0x14.25) on my SL550 and I would love a recommendation to lower my surf rpms. Currently with 4 adults and 3 (9-12 year old kids) I turn 3500-3600 rpms with the addtional 850 lbs of lead I run. That 550 is thirsty so I would love to lower rpms so I burn less premium fuel. I could care less about top end, but currently with the Acme 2247 it will hit 44-45 mph with 7 people on board...I'll bet I could get close to 50 mph with just me in the boat on a smooth morning run.