Boat Motor Prop Database Thread

[Sea2aeS]

new numbers after carb cleaning, reset timing, new spark plugs, & rebalanced prop which had some dings in the blades. Top end increase in rpms big surprise current prop = 11-3/8 x 11p 3 blade.

old numbers
-WOT @ 5400 = 28.4
-plane @ 4200 = 20.8

new numbers
-WOT @ 5950 = 29.8
-plane @ 4200 = 20.8

5950 @ WOT = 450rpm over. gonna grab a 12p, need to get rpm below 5500

just thought ide share numbers. best running height on jackplate = setting anti ventilation plate 1-1/4inches below bottom of hull.

[bone]

switched from 14 3/4 x 23 prop to 16 x 20
2007 238 dlv
Suzuki 150 4-stroke
approx 700 lbs of men on boat and full 27 gal fuel tank
went from max 40mph at max 5500 rpms to 46 mph at 5700rpm by gps in freshwater
hole shot is now unbelievable
I can now cruise at 4000 rpm at 31mph

ok i have same rig but with a suzuki 175 4 stroke. i ordered the same prop, 16x20. i have a 15x21 right now and i'm getting 40mph around 5500rpms. so if this guy is right and i have 25 more hp, i should be right on. 6100 rpms is max i think. anyways i hope to this comes in before the weekend and i'll let 175 owners know if its a good prop.

bone

[bone]

5900rpms @ 45mph
3100rpms @ 21mph
stays on plane @ 2800rpms
doesnt blow out in turns or holeshot
so far the best prop i have tried. i'll keep the 15x21 for offshore trips(it runs 18mph @ 3100rpms), it doesnt bog the motor down and wont pound to bad at 18mph.

bone