DF20A prop

[Chopperbill]

Bent my 10.25 x 10 stock prop twice, this time it looks like I shoul replace it. Order a new Solas 10.25 x 10. Put on a Solas 10.25 8 that I had and never used. It over revs the 6300 rpms that are spec for the motor. The new prop came in and I installed. It won’t go over 5850 rpm. The stock prop hit just under the 6300 rpm limit. Why won’t the Solas replacement do the same?

 

[Sea Rider]

How loaded was boat when OB over revved to 6300 rpm, did rev limiter if having one kicked in ? When going from OEM props to other prop brands most times won't achieve same wot rpm, that's due to blade thickness, shape, blade length, etc. On inflatable boats there is a usual over revving when passing from x pitch to next one. In such cases a re prop at a prop shop to add or subtract a 0.5" is way to go if like running full grip at max wot revs while OB sings along..

Happy Boating

 

[Chopperbill]

Boat loaded the same for several years. 2 adults that’s it. Solas doesn’t make a 10.25 x 9. I should have bought a Suzuki 10 OEM prop.
limiter kicks in

 

[Sea Rider]

Did the Susy 10 OEM prop performed right for your fixed load application, that's revving to full wot rpm range without rev limiter kicking in ? Taking advantage that you already have tested the Solas 10.25 / 8 and over revved, it's a candidate to be re pitched to a 10.25 / 8.5 at a prop shop to lessen wot revs. Probably 0.5 " is what OB needs and not a full 9 pitch. Do you have issues re pitching props ? Have re pitched 2 props, can't be happier specially if boating with a "fixed load".

Happy Boating

 

[Chopperbill]

Found a place to “rebuild” my OEM Suzuki prop for a lot less than a new one.