2000 SAN - How to get GPS Perfect Pass to Hold Speed Better with Extra Weight in Boat

[jhamrick]

Thoughts anyone? Thank you

[MTRBTR]

The 1248 is pretty close to the 644 and I would expect you to have issues with perfect pass at that point. If you are not skiing I would suggest the 1464 or 1234 maybe a 1578.

[MTRBTR]

https://acmemarine.com/pages/custom-fit

look at this website. You can put in your boat and it will give you recommendations based on what you want to do. I also think the 856 or 1630 would be a good choice.

[swatguy]

That specific prop is a do all prop , With the amount of weight you’re running there are better prop options mentioned in previous posts that will work better. Prop choices are not a standard , they’re very specific to what you use your boat for and what you’re looking to accomplish. If you’re looking for a specific prop for wakeboarding and/or surfing the ones I mention in my previous are great choices. The argument of running higher rpms at certain speeds is somewhat false. Especially when you’re talking wakeboard and surf speeds. You burn most you’re fuel at the point you pull rider up and swapping to a more specific prop will save you there by getting you to speed quicker and more efficiently. If you plan to ski a lot at around 28-35mph that’s where you’ll notice the fuel burn being considerably higher with a wake prop vs your current. Everything is a tradeoff.

[jhamrick]

Swatguy, I get what you're saying re RPMs. I run around 24ish MPH for wakeboarding, and really never exceed that, so RPM increase shouldn't be a big deal right?

Also, everyone please see the attached pic. This is from Acme's site. I plugged in all the relevant info - Year, Make/Model, etc of my boat and then for "Wake" chose Large, for "LBS" I chose 2-4k lbs (I can't see myself hardly ever approaching or even exceeding 4k lbs by much if at all) and for elevation I chose the lowest - I'm in South Carolina.

So, it tells me the best prop is 1630. This is a bit different than the props others have suggested on here. I'm actually not seeing ones you guys suggested.

Thoughts? Just go with the 1630?

Really appreciate this forum!

[swatguy]

Acme is always in search of getting he most performance out of props for each specific boat . Over the years they have fine tuned certain props to match specific engine combos /boats better. The 1630 has the same dimensions as the 1578 just a different cup to it. It has more
cup , More cup equals more bite , which equals , less slip , which ultimately lowers rpms a touch . A very minor tweak which probably happened over the years due to feed back and research off the 1578 after being around for a bit. I’d trust their prop tool for sure as it probably has the latest advancements in prop tech built in. So while it doesn’t match a lot of the advice here of the 1578 , the guys with the 1578’s have had a them a while and the 1630 wasn’t even built back then. So I bet if the guys with the 1578’s now wanted to replace that, Acme would probably steer them to the 1630 . Just an educated guess as I myself didn’t know the 1630 was the go to these days , but reading the specs on it I can see why that would be the go to . All the benefits of the 1578 with even more bite and a lower rpm range .

[MTRBTR]

For your application I think you would be very happy with either the 1630 or the 1578.

[jhamrick]

Thanks for the feedback. Seems like I'll be ordering the 1630. However, before I pull the trigger, is there any reason you can think of for going with the 1578 over the 1630?

[MTRBTR]

Like Swatguy said, maybe a little lower rpm and more speed up top, but I doubt you could tell a lot of difference. The 1578 is a proven prop for what you do and a lot of guys like it. The 1630 is just tweaked down a little bit.

[swatguy]

Thanks for the feedback. Seems like I'll be ordering the 1630. However, before I pull the trigger, is there any reason you can think of for going with the 1578 over the 1630?

You could probably find 1578 used which would save you cash, but if you’re going new for new go with acme’s recommendation

[jhamrick]

So, after speaking with ACME they actually suggested buying the 2570, which I did. NIGHT AND DAY DIFFERENCE! The boat holds speed better but especially planes off much much faster. It does seem though that the size of the wake, with the new bigger prop, is a little bit smaller. Maybe it's just all in my head and everything is the same except what I stated about holding speed and planing off better. Has anyone experienced a smaller wake in changing props?

[swatguy]

So, after speaking with ACME they actually suggested buying the 2570, which I did. NIGHT AND DAY DIFFERENCE! The boat holds speed better but especially planes off much much faster. It does seem though that the size of the wake, with the new bigger prop, is a little bit smaller. Maybe it's just all in my head and everything is the same except what I stated about holding speed and planing off better. Has anyone experienced a smaller wake in changing props?

Yes you can experience a change in Wakeshape by simply changing the prop. Different diameters ,pitches, and cups can change the running angle ever so slightly, which in turn can effect the wake.

[brit_hunsicker]

My time to shine lol. I was the only one who suggested the 2570. Glad you made that choice. I thought, if anything, when I went from the stock prop to the 1616 my wake got more consistent. Not sure about it being any bigger or smaller. I think the consistency is due to the boat holding speed better. Maybe try to slow down 1/2 mph? Your boat may have been lagging on speed a little at the time you hit the wake with the old prop. I normally ride anywhere between 22.3 and 23 depending on weight in boat and we will sometimes get up to 3k plus in ballast. I also ride anywhere from 75’-85’ in rope length depending on weight and speed. Let me know your findings when you mess with speed, also might want to tame down your KDW. It doesn’t need to work as hard anymore. It could be over compensating with new prop now.


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[jhamrick]

Thanks to all of you who replied - very helpful !

Brit Hunsicker, before my new prop I had bumped KDW up to 200. I didn't think about lowering it after the new prop until you suggested it. What do you think I might try lowering it to? I went out a couple days ago and added a bit more weight and the wake seems better and bigger.

Also, what boats are you guys running. Again, all I do is wakeboard; rarely surf. I look the peaky wake of the early 2000s Nautiques, but I'm looking to upgrade next year or the following. How do the wakes on the newer nautiques, say year 2010 and newer compare to the early 2000s? I probably need to start a separate thread for this question.

[brit_hunsicker]

I have a 2001 SAN and I only wakeboard. Still one of my top 3 wakes I’ve ever been behind and the cheapest of them no doubt. The newer 210s are nice, but if you are judging it solely off wakeboard wake, it’s not worth it. I had a buddy with 2014 210 and I liked my wake more. He upgraded to a 2016 G23 and its nice. Very mean wake. Also rode behind a 2018 M235 this year and I will be honest, I thought that wake outperformed the G. Both of those boats are 125k plus. Especially the M.

As far a lowering KDW that’ll just be something you need to mess with. I couldn’t even tell you what mines set at.


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