New for 2019

[Stazi]

I have only ever heard that. I am not a boat shaft angle engineer as a disclaimer 🤣


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As a former driveline engineer, I can tell you that that is bullshit. The driveline angles do not change when you change gear ratios. The only thing that changes is the number of teeth on the drive and pinion gears.


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[Surf Wagon]

As a former driveline engineer, I can tell you that that is bullshit. The driveline angles do not change when you change gear ratios. The only thing that changes is the number of teeth on the drive and pinion gears.


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That's what I was thinking though I'm no engineer. It's just a gear box not a trans as we're familiar with.

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[dakota4ce]

But....

I think it’s more about the size of prop that you would then use with said gear ratio.

I think we all know and realize that the angle would not be correlated with any internal gear ratio.

But if you reduce the ratio, you’re gonna want to take advantage of its benefits by ramping up the prop diameter, and that has challenges when it comes to a thrust vector and a forward moving boat coupled with adequate hull clearance.

Again, all heresay. But I like the belligerent BS call! Makes others feel good. 🤣




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[Stazi]

But....

I think it’s more about the size of prop that you would then use with said gear ratio.

I think we all know and realize that the angle would not be correlated with any internal gear ratio.

But if you reduce the ratio, you’re gonna want to take advantage of its benefits by ramping up the prop diameter, and that has challenges when it comes to a thrust vector and a forward moving boat coupled with adequate hull clearance.

Again, all heresay. But I like the belligerent BS call! Makes others feel good. 🤣




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Yes. With Mastercraft now running a 20” prop on the X-star, then that requires a steeper Driveline angle to for more hull clearance, unless they change the hull design instead.

The other thing is that with lower ratios and bigger props with more pitch (as a consequence) the torque on the Propshafts has seen a major jump, with boats moving towards a 1-1/4” shaft instead of the regular 1-1/8” shaft. This increase in diameter although not trivial, is also questionable whether it is sufficient as there are numerous reports of people shearing the shaft right off with these higher ratio setups.


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[dakota4ce]

Yes. With Mastercraft now running a 20” prop on the X-star, then that requires a steeper Driveline angle to for more hull clearance, unless they change the hull design instead.


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Exactly what I was alluding to. I don’t think the Supra clan is good to go with more angle....yet.

Heresay. Nothing more with regard to credibility.


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[dakota4ce]

Yes. With Mastercraft now running a 20” prop on the X-star, then that requires a steeper Driveline angle to for more hull clearance, unless they change the hull design instead.

The other thing is that with lower ratios and bigger props with more pitch (as a consequence) the torque on the Propshafts has seen a major jump, with boats moving towards a 1-1/4” shaft instead of the regular 1-1/8” shaft. This increase in diameter although not trivial, is also questionable whether it is sufficient as there are numerous reports of people shearing the shaft right off with these higher ratio setups.


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Also a worthy consideration!

I will say this, a recent adventure on an RZX3 with 2:1 was nice. 440 with 17” prop and 2:1 ran very well.


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[Prospersigman]

[QUOTE=Stazi;330090] there are numerous reports of people shearing the shaft right off with these higher ratio setups.

Just hop over to Planet Nautique if you want to read about props shearing clean off of G23s...

[trayson]

I know what they're saying. First, how are you going to verify that it's 10° cooler? Second, I can guarantee that that dark gray "Cool Tech" vinyl is still going to be hot, and way hotter than light gray "Cool Tech" vinyl.

The basic point being, I don't care what you call it, dark gray (or any dark color) vinyl is going to be damned hot in the sun. A little cooler than the exact same shade old school vinyl? Sure. A little cooler than scorching is still scorching.

Guess there's no convincing you...

Pretty sure they have “thermometers.”

No they don't! LMAO

I don't know how it works, but I sat in an all black Mastercraft with their version of this 2 days ago on a fully sunny 89 degree day and it was cooler than the lava-infused dove grey in my boat!

Even if it’s cooler than white vinyl, I am not feeling the look of dark interiors in a boat.

Dark accents look better on lighter interiors.

FTR, the max coverage Bimini pretty much shades the entire seating area from behind windshield, so there is always a shaded option

No offense to your boat, but I've said it before, I don't like Poop colored interiors, so dark blacks and grays are legit! And blue/black metalflake exterior with blue/black/slate interior is gonna look amazeballs. My Audi is black on black and I love it. Nothing wrong with a murdered out interior if it can not burn ya!

[larry_arizona]

Guess there's no convincing you...


No they don't! LMAO








No offense to your boat, but I've said it before, I don't like Poop colored interiors, so dark blacks and grays are legit! And blue/black metalflake exterior with blue/black/slate interior is gonna look amazeballs. My Audi is black on black and I love it. Nothing wrong with a murdered out interior if it can not burn ya!

No offense taken


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[monkey_butt]

for those hoping for the 1.76:1 or 2:1 tranny … be careful what you wish for … last year with the Malibu 23LSV I had the 400 raptor/1.76:1 combination and the 2279 prop … well I ordered the same prop for my SL not knowing that it would have a different ratio. Boat didn't plane as soon as half of the ballast was filled …

So obviously a mistake and went to the 2775 (wake prop) which works great. But what is equally important is the RPM … now I'm running at 3400 - 3500 when surfing at 11.2. With the Malibu I ran at 3700 - 3800 and with more than 4 people more in the ball park of 4000 … anything above 3500 will make the raptor considerably louder …

One more thing I heard this year from multiple people on the lake … they can't believe how quiet the boat is - you can't hear it … nobody told me that last year and both boats were equipped with the fresh air exhaust …

So different tranny = higher RPM = more noise and if you really want to know how much … here you can get a taste … themalibucrew forum discussing 2019 changes there - and read the comments below that video …
http://www.themalibucrew.com/index.p...anges/&page=30