I have a 225 ficht on a 26' v bottom aluminum workboat and at 6000rpm the 3
blade only gave me around 35mph and the 4 blade again at 6000 gave me 42
mph, I was amazed because I thought the 3 blade would give a higher top
speed.

"bleezle" wrote in message
oups.com...

All,

I have recently purchased a 1993 Stratos 274 DC bass boat, 17.5' long.
It came with what I was told
was a stock motor -- 150 HP Evinrude.

The seller had changed the prop to a spare he had -- 25 pitch, 13.5",
4 blade propeller. The boat
now has a hole shot that takes a long time, bow wayyyyyy up until you
nurse back power a bit to
bring it on plane. It generates 4400 rpms and reaches about 50 mph via
gps (MFG range is 4500-5500 RPM at WOT). It has a jackplate and
I've raised it from about 6 inches to about 4 currently.

Does anyone know what the original prop would be? If not, does anyone
have any advice about
what I should try next?

What I've read online suggests this:

*get RPM's up first -- and that reducing pitch by 1" = 200 RPM's on
average. So I'm thinking dropping
pitch by 3-4" is the right place to be, or in my case either a 21 or
22" prop.

*blades -- 3 or 4?? I have no idea what the difference might be.

*diameter: I have no idea.


Thanks much!!

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