Prop recommendation

[dtc123]

I have a 2000 2100v limited with a 350 MAG MPI Tournament ski engine and black vdrive. My elevation is 1000 feet. We mostly surf, have 2k lbs of ballast.

I currently have an acme 515 that got dinged and looking to replace it. Wakemakers says to go with 3-blade acme 515 or 525 for surfing, but a acme’s site recommends a 4-blade acme 1273 or 1235.

Thoughts?

[chpthril]

A 3-blade is likely the correct prop configuration, but you need to confirm the drive ratio of the black v-drive. I recently came across a black drive that was actually the 1.46:1.

[dtc123]

Thanks chpthril- I’ll see if I can find the gear ratio.

[flyboy]

The Prop Shop in Newburgh NY will fix that prop...$202.00 and it'll look like new!. Just had mine serviced there....Aluminum props are around $150.00

[dtc123]

Just checked, Ratio is 1:1. Rebuild is definitely an option once I have a good spare!

[chpthril]

Perfect. So you do want to stay with a 3-blade.

So using your current 515 as a guide. If you go larger in pitch from your 515's 12", your WOT RPM will go down and hole shot will be a little slower. Going down in pitch, your WOT RPM will go up, but hole shot will be stronger.

By pitch:

425 = 13"
515 = 12"
525 and 653 = 11.5"
911 = 10.5"
2083 = 9"

[dtc123]

Makes sense. Thank you. Will probably try a 525 for a little more while shot and see how much I’m missing at wot.


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[chpthril]

You may lose a little on the top end, but I had a friend with 2000 21i. We put a 653 on his and he could still ski the course.

[dtc123]

Didn’t test at wot, but lost 1 mph at 4,000. That said, hole shot is much stronger.