Prop Size 140 Suzuki

[Mark]

I tried the 14x19 aluminum as well as the 14x21 aluminum and neither one allowed for the rpm's to get past 5200 and neither allowed for a decent hole shot. However, the stainless 14x20 that originally came with the engine works perfectly and spins right up to 6000. Initially, I wanted to find an aluminum prop that would work right as I am unfamiliar with the area and would rather hit a rock with something other than the stainless prop. Problem is, the aluminum props with my setup were just too sluggish. I suppose I could take them to a prop shop and have them tweaked to work, but I have yet to get around to that. I know other 20's that are happily spinning the aluminum props, they just haven't worked out for my setup.