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Old 05-04-2005, 07:45 PM
kpickett's Avatar
kpickett kpickett is offline
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Boat: 1994 Prostar 190 - LT1
Location: Northern California
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2 ACME props - test results

Some of you may remember that I put up a post saying I wasn't totally happy with my new ACME 541. My old OJ actually seemed to perform better. I had several long talks with Bill at ACME and ended up exchanging the prop for a 475 (which is the 13 x 12 5/8).

I got the new prop today, and I just took it out for a spin (even though it's raining). I'm happy with the new prop.

Here are the results of my tests:
'94 Prostar with LT-1

Original OJ Legend -
3000 rpm - 32.2 mph
34 mph - 3200 rpm
36 mph - 3400 rpm
WOT - 4700 rpm - 46.4 mph

ACME 541 -
3000 rpm - 31.3 mph
34 mph - 3350 rpm
36 mph - 3500 rpm
WOT - 4700 rpm - 46.1 mph

ACME 475 -
3000 rpm - 33 mph
34 mph - 3100 rpm
36 mph - 3250 rpm
WOT - 4625 rpm - 47.2 mph

The new ACME brought me a little lower than I should be for WOT, but the speed went up. I'm happy with the rpm at skiing speed. These days, anything that gets a bit more gas mileage is fine by me. The differences are subtle, but the 475 seems to be the best match for my boat.

With the LT-1, all three props give me an unbelieveable hole shot. I don't have a good way to measure that, but all of them can yank my arms out of thier sockets.

I do wish I had a way to compare to the new OJ XMP props.
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  #2  
Old 05-04-2005, 07:57 PM
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erkoehler erkoehler is offline
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Boat: 2008 MasterCraft ProStar 197
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Thanks for the info! That will come in handy later on....
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  #3  
Old 05-04-2005, 08:24 PM
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east tx skier east tx skier is offline
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Boat: 1998 Ski Nautique
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Quote:
Originally Posted by kpickett
I do wish I had a way to compare to the new OJ XMP props.
Eric Johnson posted today that he would be happy to send anyone interested an XMP to try (I'm paraphrasing). I'm giving mine a test run this weekend if all goes to plan. Send him a PM.

The thread is here
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Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

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Last edited by east tx skier; 05-04-2005 at 08:28 PM.
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Old 05-04-2005, 08:45 PM
Leroy
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Doug;

What all are you going to do in you tests? I'm wanting to compare my stock prop to the new Acme. I wish the GPS devices had a way to output speed and time.
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Old 05-04-2005, 08:47 PM
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erkoehler erkoehler is offline
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GPS will tell you speed....
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Old 05-04-2005, 09:03 PM
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east tx skier east tx skier is offline
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Boat: 1998 Ski Nautique
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Speed will be calibrated with a course with magnets and confirmed with GPS. This is what Brian M and I have discussed as criteria.

1. RPM/Speed at WOT.
2. Wake shape and rooster tail (pictures) at 36, 34, 30, 26.
3. Wake turbulance (pictures)
4. Hole shot: Driver/Passenger perspective versus skier's perspective aka dismemberment factor.
5. Zero to 30 (timed with a stopwatch).
6. Zero to 36. (same)
7. Vibration at various speeds (just one of those things you've got to give to one or the other, neither or both.
8. Maintaining speed (holding in the course).
9. How it feels to ski it (softer, firmer, forgiving or not).
10. RPM Baselines at 36, 34, 30, 26
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Previous: 1993 Prostar 205

Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

FAQ


Tyler Ski Club


To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.
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Old 05-04-2005, 10:12 PM
Leroy
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Pretty complete.
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  #8  
Old 05-09-2005, 04:51 PM
east tx skier's Avatar
east tx skier east tx skier is offline
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Boat: 1998 Ski Nautique
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We got rained out on Sunday and spent Saturday messing with the course. I apologize for the further delay.
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Previous: 1993 Prostar 205

Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.

FAQ


Tyler Ski Club


To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.
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