Heavily Weighted (6500 lbs) Ballast - Engine Wear & Additional Maintenance

@hayden, so what RPM are you running now while surfing? I was wondering the same thing when i was fully loaded (4k, +1k lead, +700 people) the other day and it was 3900-4100 rpm at 11.2-11.3 mph at 2500' same boat as yours

i have the oj 15.5x15 altitude prop from the factory.

And according to Drew Tinker, the lower pitch props are more for hole shot speed while wakeboarding and having a higher pitch prop pushes more water for surfing, hence why the moomba website has the higher speed/pitch prop listed a surf prop.

yet everything i read/research says lower pitch is needed for surfing.

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Originally Posted by vdubnick

@hayden, so what RPM are you running now while surfing? I was wondering the same thing when i was fully loaded (4k, +1k lead, +700 people) the other day and it was 3900-4100 rpm at 11.2-11.3 mph at 2500' same boat as yours

i have the oj 15.5x15 altitude prop from the factory.

And according to Drew Tinker, the lower pitch props are more for hole shot speed while wakeboarding and having a higher pitch prop pushes more water for surfing, hence why the moomba website has the higher speed/pitch prop listed a surf prop.

yet everything i read/research says lower pitch is needed for surfing.

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Does the water the prop pushes make any difference on a wave? I thought the wave was all dependent on the hull and tab shapes, speed, and weight displacement.

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Not as much as what you mention but yes.
One brand ran reverse rotation years ago and cleaned up the goofy side better.

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Originally Posted by sandm

Not as much as what you mention but yes.
One brand ran reverse rotation years ago and cleaned up the goofy side better.

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yeah im aware of that... i think it was the pre 2008 nautiques.

also, i think mastercraft had a dual prop (XC80?) that had simultaneously surfable waves.

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Originally Posted by vdubnick

yeah im aware of that... i think it was the pre 2008 nautiques.

also, i think mastercraft had a dual prop (XC80?) that had simultaneously surfable waves.

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centurion had reverse rotation from the factory back in the day and I would bet $1 that every boat builder tried it at some point. not sure on nautty but wouldn't surprise me. reverse cleans up the goofy side better but does show that props do impact the wave for the purpose of hfarr's question.

I wonder if anyone ever really bought an x80 to surf :) beast of a barge but never heard of anyone saying the surf wake was worth a poo. gotta love a bathroom on board tho for the cfo on those cold days.....

where ya boat in idaho? I spent most of my life in boise and do miss lucky peak. one treasure of a lake.......

Quote:

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Originally Posted by vdubnick

@hayden, so what RPM are you running now while surfing? I was wondering the same thing when i was fully loaded (4k, +1k lead, +700 people) the other day and it was 3900-4100 rpm at 11.2-11.3 mph at 2500' same boat as yours

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In my opinion, this depends; from best case, A) 100 lbs kid on a medium or long board, I would say 8-9deg pitch and 3600-4100 rpm, to worst case, B) +220 lbs man on a small skim board, I would say 10deg pitch and 4400-4600 rpm, both cases at 3000' altitude, 11mph.

Quote:

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Originally Posted by vdubnick

i have the oj 15.5x15 altitude prop from the factory.

And according to Drew Tinker, the lower pitch props are more for hole shot speed while wakeboarding and having a higher pitch prop pushes more water for surfing, hence why the moomba website has the higher speed/pitch prop listed a surf prop.

yet everything i read/research says lower pitch is needed for surfing.

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The lower pitch props, especially those with higher cup, can get you up to speed when you're running heavily weighted/10deg pitch/higher altitude or any combination of the three. I've experienced this first hand on two different boats and via multiple different propellers. I called ACME and told them how my Mojo was setup and they got back and said the ACME 3407, (15.5x13x0.150") would be the best. So far that has proven true.

I would agree that if SC is advertising, "surf prop", they could assume that you are going to do a mix of surfing/wakeboarding, and in that case 15.5x15 is decent and covers all their bases. However, if you are only surfing and you fall into one or more of the, heavily weighted/10deg pitch/higher altitude categories, then you'll need lower pitch/higher cup. How much depends on how much of each of the attributes listed and, in my opinion, is part of learning how to "dial in" your boat.

I have never tested or been on a boat that does reverse rotation so I can't speak to that.

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Originally Posted by Hayden

In my opinion, this depends; from best case, A) 100 lbs kid on a medium or long board, I would say 8-9deg pitch and 3600-4100 rpm, to worst case, B) +220 lbs man on a small skim board, I would say 10deg pitch and 4400-4600 rpm, both cases at 3000' altitude, 11mph.



The lower pitch props, especially those with higher cup, can get you up to speed when you're running heavily weighted/10deg pitch/higher altitude or any combination of the three. I've experienced this first hand on two different boats and via multiple different propellers. I called ACME and told them how my Mojo was setup and they got back and said the ACME 3407, (15.5x13x0.150") would be the best. So far that has proven true.

I would agree that if SC is advertising, "surf prop", they could assume that you are going to do a mix of surfing/wakeboarding, and in that case 15.5x15 is decent and covers all their bases. However, if you are only surfing and you fall into one or more of the, heavily weighted/10deg pitch/higher altitude categories, then you'll need lower pitch/higher cup. How much depends on how much of each of the attributes listed and, in my opinion, is part of learning how to "dial in" your boat.

I have never tested or been on a boat that does reverse rotation so I can't speak to that.

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thanks for the reply. i feel like i am dialing it in still. last year was the first for my boat, and half of it was dealing with a faulty lenco actuator. then i added lead towards the end of the year and had a few head scratchers which i think were related to improper calibration of the pitch/roll sensor. figured that out when the go home setting was making the boat lean. i manually adjusted things to get the wave right, so i think im good on the prop. only time it struggles is fully loaded above 12mph... but that isnt needed because i dont run full load for wakeboarding at 18+

i do wish they had manual override for the surf tabs, like the go home preset does.


for sanity check, my neighbors malibu 23 LSV runs about 41-4200 rpm with full ballast/wedge.

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Originally Posted by sandm

centurion had reverse rotation from the factory back in the day and I would bet $1 that every boat builder tried it at some point. not sure on nautty but wouldn't surprise me. reverse cleans up the goofy side better but does show that props do impact the wave for the purpose of hfarr's question.

I wonder if anyone ever really bought an x80 to surf :) beast of a barge but never heard of anyone saying the surf wake was worth a poo. gotta love a bathroom on board tho for the cfo on those cold days.....

where ya boat in idaho? I spent most of my life in boise and do miss lucky peak. one treasure of a lake.......

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grew up in eastern idaho, so a lot of boating in ririe res. similar to lucky, but about 1/4 the size. also a lot of time at palisades, right on the wyoming border.

now im in the boise area, spend about 50/50 between lucky and lake lowell. sometimes make it to lake cascade, but i would like to try anderson ranch or lake owyhee in oregon this year. but lowell and lucky are the closest and easiest to get to.


i guess it was the X80, sounds cool on paper, but as you can see in the vid, yeah it has 2 waves, but they both look like garbage.
https://www.youtube.com/watch?v=Kn6OBQG93aY

Yeah, I would guess if the twosided surf wave was really a good thing, then you would see more boats doing it today. On the comment about being able to control your suf tabs independently as you cruise. That would be a nice feature that I think would be easy for SC to do with some software additions. I can think of several times when it would be super easy to bump a tab up or down to level out the boat with an unbalanced crew of adults. I mean, why not give you the option of using them like an old fashioned trim tab on a big cabin cruiser.

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Originally Posted by vdubnick

i guess it was the X80, sounds cool on paper, but as you can see in the vid, yeah it has 2 waves, but they both look like garbage.

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I'm ashamed to admit that I have never seen this done with wake surfing, only wakeboarding. I hadn't considered it at all. You would need a boat/hull/tabs all designed for it specifically, (for a cleaner wave on each side), but assuming you had at least one goofy and one reg rider, you could save so much gas and get more out of good lake conditions. (You have to get up pretty damn early to beat the crowds and get glass where I'm at.)

I've plumbed in my extra bow bags and plan to redo a couple of my videos that show where I've got to with weight/settings/venting/etc. I'll post it up here with all the schematics and part numbers if people want to try it out.