Wellcraft Suncruiser 255

[spareparts]

look at the propeller, it should have a size stamped on it, it will have a number followed by the letter P, that's the pitch of the prop. as a general rule, you can determine rough top speed by the pitch and gear ratio of your drive. The drive should be a 1.5 to 1 ratio. A 19 pitch prop would put you in the high 40's, 17 pitch in the high 30's/ low 40's, 15 pitch in the low 30's. These are just aprox speeds

[phatdaddy]

wild guess, based on opinion, not facts, 3 - 3.5 mpg.

[roffey]

Originally Posted by spareparts

look at the propeller, it should have a size stamped on it, it will have a number followed by the letter P, that's the pitch of the prop. as a general rule, you can determine rough top speed by the pitch and gear ratio of your drive. The drive should be a 1.5 to 1 ratio. A 19 pitch prop would put you in the high 40's, 17 pitch in the high 30's/ low 40's, 15 pitch in the low 30's. These are just aprox speeds

I have a 15x17 prop... so I think that means I have a 17 inch prop? Good for me ,, I think