Prop for Ski Nautique 200

[teamseal]

Nids,
Sorry just saw this and checked the Pm.

Really not enough bottom clearance to continue running a 14" wheel on this boat, it made a lot of noise but it did bring the top speed up over 48 mph at around 5300 RPM.

[teamseal]

50 MPH today

The fasted I have had the new (11) CB 196 is 46.8 with the 654 then again it only has 15 hours on it. the only way to get some serious speed out of the 200 is serious HP. I run a non cat 409 and am just getting into the tweeking stage. The previous 200 OB I managed to ring right at 49 out of it. 50MPH will be a strech on this boat as their are way to many forward protruding apendages on the bottom all designed for short line slalom. If you want to go fast get a boat designed to do so, other wise trying to get this hull over 50 mph is going cost $$$ into the motor.
The fastest I had the 2010 200 I had a OJ on it 13X15.5 .130 cup. This evening I am going out with the 422 for the first time on the new boat.
Try Royal Purple 15 w 40 that seems to get a few more ponies to the prop and keep the boat light as possable. another thing I noticed with the 10 OB was it did not really break in until about 75 hours.

Had the 2011 CB 409 up on Deer Point today here in Panama City, Saw a top speed of 50.00000 MPH as read on the Zero Off display. Prop on the boat is a OJ 13X15.5 four blade. WOT RPM 5400!!
I really like what this prop does for the boat, also with 50 hours the motor is starting to make good HP.

[bxroads]

Jody, the 50 MPH wasn't a fluke either. That was with 400 lbs worth of pure men, elavator weights, and lots of gear. The OJ produced an improved slalom wake to boot (for my long line tastes anyway).

[TRBenj]

Jody, the 50 MPH wasn't a fluke either. That was with 400 lbs worth of pure men, elavator weights, and lots of gear. The OJ produced an improved slalom wake to boot (for my long line tastes anyway).

How much of that weight was in the back of the boat?

Jody, which 13x15.5 were you running (how much cup)?

[bxroads]

How much of that weight was in the back of the boat?

Is that a trick question? I was sitting in observer's seat with weight at my feet.

[teamseal]

Sorry Tim but we dont play that way. 2 Occupants (396#) were in the front cockpit area, motor box tightly sealed to the floor even the Cooler behind the driver and a 75 Pound elevator weight I use for balance when their is just one person driving while we are skiing.
Going to change the oil over to Royal purple next week (a little bit early) maybe find 51 MPH.
Eric took some cup out and sent it back a few weeks ago maybe .90-.100? Was .130

[TRBenj]

Sorry Tim but we dont play that way.

Not sure what you mean- I'm curious if moving weight aft would help you gain a bit of top end. I suspect it would, but not all hulls respond to that trick. If youre really interested in squeaking the last bit of speed out of the hull, it would probably be worth trying.

Have you heard any rumblings of a bigger hp option than the 409 coming down the pipe?

[teamseal]

Tim What that means is when we do speed and prop evaluations they are done in as real a stuation as to how the boat will be used. Cant slalom or jump or trick in a tournament boat with someone in the rear, it is not utilized that way. So any top speed or propeller evaluations are performed in a manor that reflect how the boat is utilized in the real world. I am sure that if I had of put all my other than driver weight in the rear I would have seen 51 plus MPH in this boat.
I too have heard a rumor of a HP-6 liter!!

[TRBenj]

Tim What that means is when we do speed and prop evaluations they are done in as real a stuation as to how the boat will be used. Cant slalom or jump or trick in a tournament boat with someone in the rear, it is not utilized that way. So any top speed or propeller evaluations are performed in a manor that reflect how the boat is utilized in the real world.

I understand where youre coming from, but are any of the disciplines you mentioned pulled at 50-51mph? Of course you want an apples to apples comparison for prop evaluation purposes, but youre going to a lot of trouble to optimize the boat- might as well optimize the weight if you want to know what its truly capable of! Unless youre barefooting, top speed is mostly a thrill ride/bragging rights thing anyways... which is fine by me. I have no problem moving bodies around to see how high I can get the GPS to read!

6.0L or 6.2L?

[2gofaster]

Now here's an interesting bit of information we got recently. Charles had one of his lawyer buddies who's a big dawg skier do some investigation. What he came back with was if you look at the rules, the prop regulation only appears to be for towboat evaluation and only a recommendation for tournament use. So Charles called our rvp and the chief driver at nationals. The chief driver told him that the prop is NOT on their list of things to check on the towboats. And our rvp concurred.

[corgiman]

What about a Sport 200V? What prop comes standard? Has anyone changed it out to improve top end and reduce RPMs?

[Nelsonhitachi]

curious if anyone has experience running an OJ 13 X 15.5 for slalom on the ski 200 5.7. I currently have the AC 1868 12.5 X 14.25 and was leaning to switching to the AC 422 12.5 X 15. If the 422 is better than the 1868 i.e. lower rpm and softer wake than would the OJ be better than the 422? My concern of making the change to the OJ is the big jump in both diameter & pitch (diameter X pitch) = 12.5 to 13 and 14.25 to 15.

[TRBenj]

curious if anyone has experience running an OJ 13 X 15.5 for slalom on the ski 200 5.7. I currently have the AC 1868 12.5 X 14.25 and was leaning to switching to the AC 422 12.5 X 15. If the 422 is better than the 1868 i.e. lower rpm and softer wake than would the OJ be better than the 422? My concern of making the change to the OJ is the big jump in both diameter & pitch (diameter X pitch) = 12.5 to 13 and 14.25 to 15.

Youre rounding off your dimensions... dont do that. There is a big difference between 15" of pitch and 15.5".

It is also very hard to compare OJ and Acme props, as the sizes dont act the same. The OJ 428 (13x15.5) will turn fewer RPM than even an Acme 668 (12.5x15.5, .150 cup... this is the cupped version of the 422). Jody says he likes the 428 on the 6.0L 200, and all reports say it skis very well... but it'll be pretty sluggish compared to the 1868.

If youre looking for a decent compromise on performance and still want to knock the revs down a bit, the Acme 654 or 470 (12.5x15) would be the props I'd look at.