140 suzuki on 20 MA - Page 2

billythekid · #1 11-20-2009, 01:54 AM

Loon what your RPMs top out at ? 13x17 is too small. I think its atleast a 14" prop. When I first ran my boat with a 14x16 I had way too many RPMs. I then went to a 14x18 that came with the motor still over on RPMs. now with a 14x20 I and still running at 6200 so I want to try a 14x22 when I find one ebay. I might be able to get another 1 or 2 mph out of her!

I dont like aluminum props as the tend to flex out at high RPMs

billythekid · #2 11-20-2009, 02:01 AM

Quote:

Billy, I'd be very interested in the numbers on that new prop.

I bought Trayders boat; this summer on flat calm, one person and about 30 gal in the tank, My WOT was an indicated 40, GPS'd at 38 kts. Aluminum 3-blade prop (I believe 13x 17, but don't have it handy). I believe this boat is a bit lighter than most 20s.

I would like to know what your boat weighs, I want to drive mine across the scale to find out .

38knots is about 44mph. that is great speed.

I would bet it would be even faster with a 14x20 stainless 3 blade.