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Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: March-24-2013 at 10:18am
Finally tried a WOT run with the 1442 today. The prop has felt good since installed plenty of bite on hole shot and reasonable rpms at skiing speeds.

With 5 people in the boat 36 mph is almost 4000rpm with skier behind boat.

Top speed was 43.1 @ 5030rpm with 5 people and plenty of gear in the boat.

Should have my repaired 422 back this week. Not sure if it will go straight back on now.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PLBC Quote  Post ReplyReply Direct Link To This Post Posted: March-25-2013 at 1:27am
Have any of the sport / air owners tried either of these props?

224 (13x15.5) 4 blade .090 cup

or 668 (12.5x15.5) 4 blade .150 cup
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TRBenj Quote  Post ReplyReply Direct Link To This Post Posted: March-25-2013 at 11:30pm
Kurt, the 224 would be interesting to try as its pretty close in size to the proven 422. Skip the 668, it's the extra-cup version of he 422 (meant for 6.0l boats) and would be taller than ideal.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote skutsch Quote  Post ReplyReply Direct Link To This Post Posted: March-26-2013 at 12:15am
So, Kurt thanks for refreshing this in my mind, and I told you Tim would have some good stuff. So what about the 2068, .5" less pitch with 3 blades and 5/100ths more cup? Would that be a 3 blade that would be as identical as you can get to the 422? Being a 1/2 smaller in diameter then the 1442, I am thinking I might be able to turn it closer to the 5000 RPM Peak HP? Thoughts?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: March-26-2013 at 3:24am
Steve go back at bottom of last page I asked Tim about the 2068.

Originally posted by TRBenj TRBenj wrote:

Lewy, bummer on the prop. The 2068 is the cupped 470 IIRC, and would make it turn pretty similar revs to the 422. I am not a fan of adding that much cup to the prop (prefer to keep it at .105 or below). I think adding that much cup just makes the prop less efficient. A few of us have added cup to props and while its effective at dialing in RPM to the desired level, it usually does not come along with increased speed as it should. More pitch is really the ticket for these situations.


Steve see above post about 1442 even though it is a larger diameter 13.25" compared to 12.5" I was able to turn it 5030rpm better than both the 422 and original OJ legend it also produced my best top speed and this was all in a boat with 5 people and gear with low fuel.

Looking forward to back to back testing it against my yet again repaired 422.

Kurt the 224 would be worth a try especially at reducing rpm at footing speeds.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TRBenj Quote  Post ReplyReply Direct Link To This Post Posted: March-26-2013 at 12:20pm
What Mark said ^^^.

I turn the 1442 200rpm higher than the 422. To get the most out of a GT40 (lightly loaded), prop it to turn right around 5k. The 3-blades like the 470 and 1442 usually put you beyond that. The 422 usually comes in pretty close, but the 224 and 1490 (13.25x15.5, .060) would probably run pretty similar RPM's as well.

Bigger props like the 668 and 1492 would bring the revs down even more, but probably keep you south of 4800 and be a little doggier all around, especially on a bigger boat like the Sport.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote skutsch Quote  Post ReplyReply Direct Link To This Post Posted: March-26-2013 at 12:41pm
Mark - of course you guys already talked about it!, I obviously need to pay more attention to this thread... So no issues on the clearance, increase of 3/4 inch of dia, only brings the tip 3/8 inch closer to the hull, so I guess not... Maybe I will give ACME a call and see if they can come to Green Lake and demo props - that might be a good idea. Then we could run, a 470, 422, 224, 1442 and at that point I would even try the 1458
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Post Options Post Options   Thanks (0) Thanks(0)   Quote C-Bass Quote  Post ReplyReply Direct Link To This Post Posted: March-26-2013 at 12:56pm
I need to get GPS and RPM data for the 654 on our Sport. I think WOT is close to 5k, not sure on speed. I am very happy with it though.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: August-27-2013 at 8:54pm
I've finally got numbers on my new 1442. First, strange thing happened with the stock OJ 13x16 4 blade. Until I dinged it, I was getting 44.5 mph at 4,600 rpm. I sent it out for recondition and put it back on first. I could tell from the first minute that something was different with it, had less bite at idle in gear. Here's the numbers I got with it after recon:

OJ 13x16 4 blade
rpm   mph
2000 13.0
2500 22.2
3000 28.0
3500 32.3
4000 36.4
5230 44.7 WOT

Crazy, huh? They must have really altered the prop when they reconditioned it.

On to the 1442, here's the numbers today:

Acme 1442 3 blade
rpm   mph
2000 13.1
2500 22.0
3000 28.2
3500 33.3
4000 37.6
5180 45.4 WOT

The prop felt great, excellent holeshot. I hope to get behind it on the ski in the next few days. At 4800 rpm the speed was 43.6 mph. Even though the numbers for the 2 props seem similar, the Acme felt much better, more responsive.

All numbers were with 1/4 tank of fuel, fair amount of gear in the trunk and ski in the locker, just me in the boat, light breeze.

Now if I can stay away from rocks ......
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: August-28-2013 at 12:30am
David looks like they have changed your OJ somewhat maybe a touch less pitch. The OJ Legend is a decent prop just the ACME CNC's are that much better.

Did you notice the harmonic noise when slowing down?

You are still seeing better speed than my 98. I must have a slow hull with a bit more hook.

I have yet to test my repaired 422 against the 1442 back to back. Should be able to do that shortly as spring is almost here.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: August-28-2013 at 12:44am
I didn't notice the harmonic. The recon-ed OJ had a rough area when getting onto plane, another difference from before as it had been very smooth, and in comparison the 1442 felt smoother at all speeds. I actually was surprised as I didn't expect it to be as smooth as the 4 blade.

I'll be curious to see max rpm with a few more people in the boat, see if brings it down closer to 5000. I don't run WOT much so I'm not worried about over-revving, but wouldn't want to run 5200 rpm for too long.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote skutsch Quote  Post ReplyReply Direct Link To This Post Posted: July-23-2014 at 7:07pm
Swapping out the 422 for the 1442 to try tonight. Man the 1442 sure looks like it is a lot bigger then 3/4" diameter that it says it is, thats only 3/8" on a blade, but wow it looks HUGE!

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Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: July-23-2014 at 7:32pm
I know what you mean, it looks big, I had the same impression. I was kind of surprised when I found I could turn it almost 5,200 rpm.

Very curious what you think of the 422. I saw in the other prop thread where Mark found the 422 helped keep the rpm down a few hundred compared to the 1442 at ski speeds. I think if overall performance was similar I might go in that direction, even if I lost a little speed at WOT. Truth is the 1442 is more pull out of the hole than I need on a slalom ski, even though I've "grown" to around 210 lbs., usually tell my drivers to push the throttle forward steady, don't need to hammer it.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote skutsch Quote  Post ReplyReply Direct Link To This Post Posted: July-23-2014 at 7:53pm
I have always run the 422, so I will be trying the 1442. With the crew I am going with tonight, its all barefooting, so anxious to see what we get on the top end and changes to the roost & wake. Always like the 422, just looking for a little more top end.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: July-23-2014 at 8:05pm
I meant to type that, "very curious what you think of the 1442", just had one of those brain reversal moments that seem to be happening more often these days!

First and foremost, have FUN! But yes, please let us know what you see as the differences in the props.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: July-24-2014 at 10:03am
Steve looking forward to see your results. See if you can also get a picture of the boat from a distance of it running at WOT. I must remember to get one of mine next season to check where the water breaks on hull in smooth water conditions. I ended up putting the repaired 422 back on just to check if the repair was good. They polished all the machine marks off the prop .

The 422 is still on the boat now as it once again reduced our rpms at social slalom speeds by around 100-200rpm.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TRBenj Quote  Post ReplyReply Direct Link To This Post Posted: July-24-2014 at 10:20am
200rpm is about the difference you should see between the 422 and 1442 (1442 spinning higher). Diameter doesn't have nearly the effect on rpm that pitch does.

Mark, pictures from a distance are fine but tricky to capture. Just noticing where the spray breaks on the hull compared to the driver or windshield is usually pretty telling.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: December-08-2014 at 8:31pm
I just priced a new 422 at Delta. With the CCF discount, $362 including free shipping. Seems very reasonable, isn't that lower than they were in the past or am I mis-remembering?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jimsport93 Quote  Post ReplyReply Direct Link To This Post Posted: December-08-2014 at 9:08pm
That is a good deal from what I have seen...and paid, in the past
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TRBenj Quote  Post ReplyReply Direct Link To This Post Posted: December-08-2014 at 9:52pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: December-09-2014 at 1:42am
I decided to do the prudent, responsible thing ..... I clicked "order" before I could think too much about it and find a reason not to. Now just have to wait 5 months to try it out!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: March-08-2015 at 10:02am
David you must be itching to try that 422 when the ice clears. I cannot tell much difference in the pull between the 422 and 1442 on a slalom start. The 1442 may prove to be better with more load such as multiple barefoot or slalom deepwater start.

I managed to spin my 422 to 5081rpm today at WOT with some tuning of my Megasquirt ECM. This is 150rpm more than I was ever able to turn it on the Ford EEC1V ECM. Stargazer had 43.2 mph with 4 people and 75% fuel.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: March-08-2015 at 4:24pm
Those results sound very good with a big load in the boat! If I remember correctly that's quite a bit faster than you were seeing with the 1442, which should be the faster prop.

Yes, I'm anxious, can't wait. The prop is sitting in the box and it's aggravating to walk by it. I'm sure I'll be fine with the pull, the boat pulls from deep water harder than I want/need with the 1442 and with the original OJ as well. I'm mostly curious about the rpm we run at ski and boarding speeds. I figure it should be 150 or more lower at ski speed and WOT, not so sure at 17-20 mph since I don't know how the rollover onto plane compares between the props at those speeds.

I was snowshoeing on the lake last weekend, so going to be a while ...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote halfnelly Quote  Post ReplyReply Direct Link To This Post Posted: May-02-2015 at 1:57am
OK, so I had some time today to mess around with a couple of props. All runs were done with just me in the boat, a half tank of gas, and maybe 50lbs of gear (extended pylon on the floor, anchors, etc.). I put the stock OJ Legend 14x16 3-blade back on since I had never run it with GPS before and I was curious how it topped out. After a couple of runs, the best she would do was 48.7 at 5070 RPM:



I couldn't quite get 49 out of it, tried a couple of different directions on the lake to see if the varying wind chop would help, but that's the best I got.

Next, I put the boat on the trailer and put the 1868 back on. The difference in smoothness was noticeable immediately, as were the extra 500 RPM at just about every speed. After a wicked holeshot, I managed to get 47.9MPH at 5570 RPM:



It actually flashed 48mph for a split second after I took the photo, but I was running out of lake. So I've basically added 500 RPM and only lost 0.7 MPH on the top end by going from the 14x16 OJ to the 12.5x14.25 1868. The difference in holeshot and smoothness is unbelievable between the old and new technology. Since we're mainly doing low speed activites nowadays, I'm going to keep the 1868 on it. If I ever get around to getting my 422 fixed that'll be my slalom/barefoot prop if I ever decide to get back into that.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: May-02-2015 at 10:19am
Those are the best numbers on a Sport I have seen. I bet you would see 49+ with a 1442
Would like to see some more numbers from other 93-97 Sports. This would confirm my suspicions that the shaft angle and minor hull changes slowed down the 98> Sports.

***Hey Mike could you rename this thread to say Sport Props and removal******
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Toertel Quote  Post ReplyReply Direct Link To This Post Posted: May-02-2015 at 10:25am
Agree that is pretty fast.
With the FAE on and 2 light pax we hit 41 mph with old prop (FAE is quiet but top end suffered with it -2mph) at about 4800 rpm.
I'm sure the extra cup in my new to me 668 will slow it down some more but will try to get a run in today and let ya'll know
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Post Options Post Options   Thanks (0) Thanks(0)   Quote halfnelly Quote  Post ReplyReply Direct Link To This Post Posted: May-04-2015 at 10:45am
Originally posted by lewy2001 lewy2001 wrote:

Those are the best numbers on a Sport I have seen. I bet you would see 49+ with a 1442
Would like to see some more numbers from other 93-97 Sports. This would confirm my suspicions that the shaft angle and minor hull changes slowed down the 98> Sports.

***Hey Mike could you rename this thread to say Sport Props and removal******


Sweet! Looks like I got myself a hotrod!

Well, the time with the 1868 was short lived. Yesterday I hit something while backing it off the trailer and bent one of the blades. The same thing happened with the 422 I have, I must have had 3 uses out of it before I whacked something. Same lake, same ramp. I put the "old reliable" 14x16 OJ back on while I send the 422 and 1868 to Admiral C&B for repairs. Time to petition the HOA to pony up the dough to get our ramp cleaned out and dredged.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Toertel Quote  Post ReplyReply Direct Link To This Post Posted: May-04-2015 at 10:57am
With the 668 (422 with more cup) 3 adults and tons of gear and my son we hit 39mph on the gps at 4200. Water was to messy for a WOT run but think with the GT-40 we should see some acceptable number once we try it
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeinNY Quote  Post ReplyReply Direct Link To This Post Posted: May-04-2015 at 12:00pm
Originally posted by halfnelly halfnelly wrote:


Well, the time with the 1868 was short lived. Yesterday I hit something while backing it off the trailer and bent one of the blades. The same thing happened with the 422 I have, I must have had 3 uses out of it before I whacked something. Same lake, same ramp. I put the "old reliable" 14x16 OJ back on while I send the 422 and 1868 to Admiral C&B for repairs. Time to petition the HOA to pony up the dough to get our ramp cleaned out and dredged.


Ouch, are you sure it isn't the prop guard on the trailer.. there are some out there known to be blade benders.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote skutsch Quote  Post ReplyReply Direct Link To This Post Posted: May-04-2015 at 12:10pm
Yeah, I have one of those trailers. I finally came up with a fix (as I just can't bring myself to cutting on my trailer...) Busted up 3 props before I finally got serious (and self control - I would always do it when I was rushing). Always happens when I am at a shallow ramp and have to power to get the boat off, prop walk walks it to port side and right into the prop guard. Usually bends the tips of all 4 blades, peels them right over. Also leaves a nice patch of Nibral on the trailer - that would be your "tell"

Anyways, if that is the issue let me know and I can find a picture of my "fix"...

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