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StuSX
06-04-2008, 10:09 PM
Just changed to an ACME 13.5 x 15.5 3 blade with .105 cup. Getting more speed at less rpms at the top end, but seems sluggish at the low end. Does this make any sense? I thought a bigger prop would have more hole shot speed, and less top end speed. Any thoughts or advice would be greatly appreciated for a prop specs novice as myself.:cool::o

endl
06-06-2008, 11:26 AM
You need to go up on the Diameter down on the pitch. I went to a Acme 1285 which is the 14.5 X 14.25 and it made considerable difference out of the hole.
The 1285 is make for heavy wakeboard boats with additional ballast above stock levels. I would think the CSX with as much deadrise would also benefit from that size. They may have a trade program if you bought it straight from them.

TMCNo1
06-06-2008, 12:21 PM
You need to go up on the Diameter down on the pitch. I went to a Acme 1285 which is the 14.5 X 14.25 and it made considerable difference out of the hole.
The 1285 is make for heavy wakeboard boats with additional ballast above stock levels. I would think the CSX with as much deadrise would also benefit from that size. They may have a trade program if you bought it straight from them.
http://www.ojprops.com/ and talk to Eric!

EJ OJPROP
06-06-2008, 01:03 PM
I have just built a 13 X 14.5 LC XMP 4-blade for the MCX with the 1.26: trans and 6.0 with the 1.22:1 trans to replace the 13 X 12 LC XMP 3-blade. This propeller will be better on the low end than your current prop with similar top end. The low end will not be as good as the 13 X 12 but better than the current prop.

The larger diameter lower pitch propellers, that we orginated for the wakeboard boats, 14.25 and larger, will not work on your application due to the gear ratio of the transmission in tour boat.

Feel free to call with any other questions.

Eric @ OJ PROPS - 800-359-9730

StuSX
06-09-2008, 10:10 AM
It has the 6.0 375hp Crusader Saltwater Series, if that makes any difference...

EJ OJPROP
06-09-2008, 10:14 AM
The tansmission ratio 1.22:1?

StuSX
06-15-2008, 09:39 AM
The brouchure says 1.26:1 . The prop that came with it is 13x12 VC .65 OJ 3 blade prop. It was putting my RPM's at WOT at 6k while only going a bit above 40mph. I'm putting that one back on today to see the difference at the usual speeds we operate at( 15-30 mph), since the 13.5 x 15.5 is doggy not only out of the hole, but won't speed through turns, etc...