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willyt
10-16-2013, 01:12 PM
so dropped the boat in a couple days ago and said something that got me thinking,

dunk and fill...

that's about all we ever do, we have to idle by a 1/4 mile long no wake zone but after that its all riding all the time. Its an 07 MCXer.

I currently have a 14.25x14.5 OJ on the boat, and I'm thinking about comparing a 14.75x13 OJ and 15x12 acme for my next prop. Fuel burn and plane time will be the two most important factors.

anyone tried this before?

bhanson
10-16-2013, 02:09 PM
Not exact comparison, but I replaced my Acme 537 (13.5x16) with the Acme 2079 (14.5x12) on my 2001 X30. I love it. Would even say that it completely transformed my boat's performance and enjoyment, but don't want to be overly dramatic. Considered the 15x12 but was going to be a bit tight, and figured 14.5x12 was already a huge change for me.

Your two questions: Fuel burn- i burn less gas now (my 537 cavitated slightly when surfing, increasing fuel burn), Plane time- not even a fair fight in my case, 12er hole shot is ridiculous and planes very, very quickly.

We surf most of the time so fully loaded with 3000# plus crew. The 537 would cavitate badly with that much load, so I could only run about 2000#. The 2079 pushes 3000# effortlessly. In addition, oddly, my RPMs at 11 mph went DOWN compared to the 537. That tells me the 537 was cavitating some even with the 2000#, just not bad enough to notice (yikes !).

Wakeboard with way less load, so 537 was fine, but 2079 hole shot and plane time is way better. Certainly no downsides using 2079 for boarding.

WOT went from roughly 38mph/4800 rpm to 35mph/5000 rpm, but we never run it like that. Even when cruising we stick around 25-30 mph.

For me, it was "finesse" versus "raw power". Used to be "hit it" to yank the boat out of the water and wait (hope) for it to plan, now we just ease into it even with full load. World's Strongest Man, when the huge guys pull a tractor trailer: that is how I feel about my X30 now with the 2079.

501s
10-16-2013, 02:19 PM
On My X-30 I went form the 14.25x14.5 to the 15x12. We mostly wakeboarding with 3k. Time to plane was almost cut in half, RPM's went down by 200 and so did the fuel useage. Win win to me. I felt the prop made a bigger difference than going from the 5.7 to the 6.0.

Top speed is around 36 now. But that's not at all important to us either.

snork
10-17-2013, 05:46 PM
I'm considering a Acme prop but I don't want to loose my top end speed I need 40mph to barefoot but I wakeboard with an additional #2500lbs and probably increase to #3000lbs sometime in the future
07 XStar w/MCX

CumberlandXstar
10-18-2013, 08:21 AM
I wrote down what rpm the boat was at for each mph on a few props. I will try and find it and post it up to give you some reference. Let me know if you want to borrow my new prop to see how you like it.

Mastercraft13
10-18-2013, 08:48 AM
so dropped the boat in a couple days ago and said something that got me thinking,

dunk and fill...

that's about all we ever do, we have to idle by a 1/4 mile long no wake zone but after that its all riding all the time. Its an 07 MCXer.

I currently have a 14.25x14.5 OJ on the boat, and I'm thinking about comparing a 14.75x13 OJ and 15x12 acme for my next prop. Fuel burn and plane time will be the two most important factors.

anyone tried this before?

Easiest answer, just get a new star! You still riding? Mine is at BHM so if you need a 3rd let me know, I have the dry suit out.

willyt
10-18-2013, 08:58 AM
forecast isnt looking promising for riding the rest of the year, after monday's 67 there will be 3 nights in a row its forecasted to get below freezing. think i might have to hang it up this sunday

wilhelmwake
10-18-2013, 03:21 PM
I put an ACME 14,5 x 14.25 on my 2005 MCX xStar and that prop was fabulous!!! Definately can recommend it...

Jerseydave
10-20-2013, 07:11 PM
I'm considering a Acme prop but I don't want to loose my top end speed I need 40mph to barefoot but I wakeboard with an additional #2500lbs and probably increase to #3000lbs sometime in the future
07 XStar w/MCX

For more top end speed without losing much holeshot try an OJ 14.75 X 15.5. Top speed for me with that prop was 41-42.
If you run 1400# rear ballast and 1250# front (total) the wake is sweet.
No need to use the rear hard tanks at all......I don't. They're too far forward anyway.

willyt
10-24-2013, 08:47 AM
http://www.wakeworld.com/forum/showthread.php?t=800125

some good information about the 15x12 in that thread actually

501s
10-24-2013, 10:07 AM
The 15x12 is an awesome prop, I have yet to meet anyone with one who isn't happy. You loose a little speed off the top end, but that's the only negative I have found. It's fun to keep loading the boat up and not having to worry about there being too much weight. We had over 4k in my X-30 this summer with 8+ people (and the X-30 weighs 4700lbs dry) so it was over 10k total weight and we got on plane no problem. Wake was bananas with that much weight too.

Jerseydave
01-19-2014, 08:52 AM
http://www.wakeworld.com/forum/showthread.php?t=800125

some good information about the 15x12 in that thread actually

willyt, did you end up buying the ACME 15X12? I'd be curious to see how you like it once you're back on the water. I have some cavitation on right turns when fully loaded, plus I'm all for a better holeshot if possible too. :)

CottagerGreg
01-20-2014, 09:48 AM
I have the Acme 2271 15" x 15.75 4blade prop with a 105 cup.

Performance, RPM's and GPH are better than the previous 14.5 x14.75 OJ prop

I could get on plane with 700's in back locker, 400 in walkway and 400 on top of bow seats. Factory front ballast filled and 7 people in the boat.

Once ECU adapted it got up no problem.

Comparison to the OEM OJ prop
http://i89.photobucket.com/albums/k212/GTI2lo/2008%20Mastercraft%2040th%20Anniversary%20X-star/utf-8BNTYwMjAxXzEwMTUwOTQyMDkzNDY4NzM1XzUxNDIwMzczNF8y MzYyMTU3MDNfNTIyMDgyODkwX24uanBn.jpg (http://s89.photobucket.com/user/GTI2lo/media/2008%20Mastercraft%2040th%20Anniversary%20X-star/utf-8BNTYwMjAxXzEwMTUwOTQyMDkzNDY4NzM1XzUxNDIwMzczNF8y MzYyMTU3MDNfNTIyMDgyODkwX24uanBn.jpg.html)

willyt
01-20-2014, 05:03 PM
you have the LY6?

MC25
01-20-2014, 05:41 PM
What is up with the black/grey prop?

Tristarboarder
01-20-2014, 09:19 PM
Kinda still on topic with this thread....any recommendations for a prop for an older Xstar? 2002 with the LTR? I am not cool enough to own a newer one, but want to try at least :D
Thanks

CottagerGreg
01-20-2014, 09:45 PM
What is up with the black/grey prop?

That was the 14.5 x14.75 OJ prop was used for a couple seasons. Must be out water ph balance

MC25
01-20-2014, 10:27 PM
Kinda still on topic with this thread....any recommendations for a prop for an older Xstar? 2002 with the LTR? I am not cool enough to own a newer one, but want to try at least :D
Thanks

Budman has a 13.5x16 or something like that and its not bad with like 2800lbs of ballast.

Tristarboarder
01-20-2014, 11:03 PM
I have read a lot of research over the last few months about the Acme 1285 being a good prop choice for my year/model boat. Just curious if anyone else has used this prop for a Star/X2/X1.....205v hull, or another prop recommendation

MC25
01-20-2014, 11:12 PM
Oj 522 also seems to be a popular choice for the 205V

wallnut21
01-21-2014, 08:32 AM
I used the Acme 1285 on my '06 X2 with great success. Sometimes we ran stock + 1400 with six to eight people with no problems. Also ran the OJ 14.25x14 as a spare with similar results. I'm planning on using the 1285 on my x30 on order.

willyt
05-05-2014, 11:46 AM
follow up to this thread from last year, i spoke to acme last week and they recommended either the 2307 (15x12, .105 cup) or the 2197 (14.5x12, .150 cup). I expressed concerns about the RPMs at speed, and based on that they steered me in the direction of the 2307.

I have a friend that just bought a 1516-122m (basically a 14.5x12.75 .105 cup) and the results of his test are promising, i dont think i could go wrong either way.

Planning on ordering it soon

FoggyNogginz
05-05-2014, 12:43 PM
Increased diameter and less pitch do seem to be the trends among surfers/boarders. Please let us know what you find. I am ordering today as well. Good luck!

DBrown2
09-15-2014, 01:01 PM
Bump WillyT what did you do? I am looking at upgrading now that I have added more Ballast to the Port for surfing, and with more than 4 people in the boat its grunting and now much of a hole shoot anymore.
I don't barefoot nor have I ever ran my boat at 40+ MPH, I typically run 28-30 MPH if just running the river to go eat.
Keeping fuel economy in mind. Whats the outcome?

DBrown2
04-08-2015, 09:00 PM
Bump to top.. I added Ballast at end of Summer to my 05 about 1600 to stock and now the OJ 14.5 x14.. just isn't cutting it with my 5.7. I have another prop 14x20 but I don't think that will work. I need hole shot power again. Suggestions? I mainly surf and load up port

BudmanV24
04-08-2015, 09:35 PM
Bump to top.. I added Ballast at end of Summer to my 05 about 1600 to stock and now the OJ 14.5 x14.. just isn't cutting it with my 5.7. I have another prop 14x20 but I don't think that will work. I need hole shot power again. Suggestions? I mainly surf and load up port

14x20 will give you even less low end....like way less low end.

I'm running a 14.25x14 right now with the mcx and the other weekend I tried running all stock ballast, plus fly high, plus bow walkway sack, plus 6ppl and I absolutely could not get on plane. I was probably around 5k lbs of ballast and bodies.

clrussell
04-08-2015, 11:08 PM
I've got a 15x12 waiting to go on the star. Coming from 14.5x14. I've got the 6.0 engine.. Hoping for more hole shot.. Wake makers said this was the most aggressive prop I could put on this boat. So I'll be sure to fill everyone in

BudmanV24
04-08-2015, 11:32 PM
Clrussell, is that the 400 hp 6.0? How much ballast do you run?


Willyt ordered the new oj #845 wake pro v3. It's a 15x13. I haven't heard from him since he got it in though.

clrussell
04-09-2015, 08:32 AM
Clrussell, is that the 400 hp 6.0? How much ballast do you run?


Willyt ordered the new oj #845 wake pro v3. It's a 15x13. I haven't heard from him since he got it in though.


Mines just the 385hp. We usually only run about 600 over stock ballast plus 8-10 people and I've never had a problem with planing.

However one day I had 5 people on the boat and filled ballast to the max, 800 in bow 750 in lockers and 240 on floor. Literally would not plane out.

I'm hoping to get my prop on tonight and go out Saturday.

BudmanV24
04-09-2015, 08:53 AM
Let me know how it goes, because I'm ready to order a new prop. I'm also curious what top speed is with a 15x12.....what's your wot rpm? My boats rev limiter is at 5200.

willyt
04-09-2015, 09:05 AM
hey, sorry, i'm alive. I slapped the oj 845 on the boat but its rained for a week straight in columbus, river is a foot over the highest mark we can put the boat in at. Might be a minute before i can actually test it...

clrussell
04-09-2015, 09:45 AM
Let me know how it goes, because I'm ready to order a new prop. I'm also curious what top speed is with a 15x12.....what's your wot rpm? My boats rev limiter is at 5200.


I'm not sure on my rev limiter, I've never been there.. I would guess 5600 ish..

I'll try to get some good data this weekend

BudmanV24
04-09-2015, 10:09 AM
I'm not sure on my rev limiter, I've never been there.. I would guess 5600 ish..

I'll try to get some good data this weekend

Some other things to consider. I know the ly6 eats plugs....not sure about the lq9. How many hours has it been since your last change? Does your boat idle rough or act a little ornary when cold? Do you run 93 octane? The 6.0 is higher compression and optimized for 93. Running regular also accelerates plug wear.

clrussell
04-09-2015, 10:47 AM
Some other things to consider. I know the ly6 eats plugs....not sure about the lq9. How many hours has it been since your last change? Does your boat idle rough or act a little ornary when cold? Do you run 93 octane? The 6.0 is higher compression and optimized for 93. Running regular also accelerates plug wear.


I think plugs were changed 100 hours ago and will get changed before the weekend. Boat idles perfect and has never hiccuped cold hot etc.. I always run 91 and 93 if I happen to buy on the water (can't get 93 anywhere but on the water, however it's $1 per gallon more).

clrussell
04-09-2015, 03:07 PM
Just threw my prop on the boat, headed out Saturday if weather holds
http://images.tapatalk-cdn.com/15/04/09/96054bd8f5d6e22cee01811f754550af.jpg

DBrown2
04-09-2015, 03:45 PM
Budman... we are in the same boat, my last weekend out... I was loaded port, plus center locker, and half Star... Plus 7 people and the boat was not performing... it would Surf, but the nose never dropped, no matter how many were in the front.

So I too am in the prop market... I had searched and saw 15x12 maybe is the route to go... didn't know about the new 15x13

Top Speed is not much of a concern for me... I have no where to be in a hurry.

willyt
04-09-2015, 04:07 PM
clrussell,
you worried about prop clearance? it looks like my 15 incher hangs below the prop guard on the trailer

clrussell
04-09-2015, 04:18 PM
clrussell,
you worried about prop clearance? it looks like my 15 incher hangs below the prop guard on the trailer


Not really, I only use steep Ramps or back the trailer way in the water.. Float on and off..

But I know what your saying. I do believe it would hit if I wasn't paying attention.

willyt
04-09-2015, 04:22 PM
how about trailering?

clrussell
04-09-2015, 04:45 PM
how about trailering?


No I'm not worried, I think mine is up high enough. If I hit the prop I've already messed up.

http://images.tapatalk-cdn.com/15/04/09/ecb6a53725b8f5765ad2cf58acd49275.jpg

willyt
04-09-2015, 05:24 PM
im going to have to go look at mine again... my trailer must be different

clrussell
04-09-2015, 06:16 PM
Mines an 05 with factory trailer,,

BudmanV24
04-09-2015, 06:46 PM
Budman... we are in the same boat, my last weekend out... I was loaded port, plus center locker, and half Star... Plus 7 people and the boat was not performing... it would Surf, but the nose never dropped, no matter how many were in the front.

So I too am in the prop market... I had searched and saw 15x12 maybe is the route to go... didn't know about the new 15x13

Top Speed is not much of a concern for me... I have no where to be in a hurry.

I'm out on the water right now and am taking forever to plane with less than 2k lbs of ballast and 2 ppl aboard. I replaced the rotor and cap about a month ago (boat was missfiring). Even empty I couldn't get above 4500 rpms. Either my plugs were fouled by the dirty rotor and cap or I'm low on fuel pressure. I'm gonna swing by oreilleys on the way home and get plugs and a fuel pressure gauge.

BudmanV24
04-09-2015, 08:29 PM
Swung by oreilleys and picked up a box of ac41-993s and a fuel pressure gauge. What's the consensus on plug gap....0.45 or 0.60?

BudmanV24
04-09-2015, 09:13 PM
Fuel pressure is 55psi, which is fine. Will install plugs tomorrow and see if I can get out on the water later this weekend to test.

bet_on_black
04-09-2015, 09:16 PM
Swung by oreilleys and picked up a box of ac41-993s and a fuel pressure gauge. What's the consensus on plug gap....0.45 or 0.60?
.60 ftw

BudmanV24
04-09-2015, 09:40 PM
.60 ftw

Gracias.

Can't wait to get this thing running right again so we can start running tons of ballast....literally. I installed fly high plus a 4th pump to fill additional sacks, just need the power to lug it all around.

clrussell
04-09-2015, 10:12 PM
Gracias.



Can't wait to get this thing running right again so we can start running tons of ballast....literally. I installed fly high plus a 4th pump to fill additional sacks, just need the power to lug it all around.


Yall must have good knees 😂😂

bet_on_black
04-09-2015, 10:28 PM
Gracias.

Can't wait to get this thing running right again so we can start running tons of ballast....literally. I installed fly high plus a 4th pump to fill additional sacks, just need the power to lug it all around.

Did you do the PWT kit with the switches or just overflow from the tanks?

MC25
04-10-2015, 12:05 AM
PWT kit.

BudmanV24
04-10-2015, 12:32 AM
I like being able to tweak what tanks or sacks we fill. Like no rear hard tanks to wakeboard but then when we surf we'll fill the port rear hard tank.

willyt
04-10-2015, 08:49 AM
bud, the other thing it could be are plug wires. Had to replace those on mine recently.

willyt
04-10-2015, 12:52 PM
River is still rising... Riding chances for this weekend are slim to none...

MC25
04-10-2015, 01:05 PM
Yall must have good knees 😂😂

Nope haha, I'm in double knee sleeves when I work out

BudmanV24
04-10-2015, 01:15 PM
bud, the other thing it could be are plug wires. Had to replace those on mine recently.

Yeah, I'm gonna stop on the way home and pick a set up.

clrussell
04-11-2015, 10:02 PM
Took mine out with the 15x12.. Amazed how well it pulls.

Had 6 people in the boat, full yeti on the platform, all stock ballast full, 750s half filled in the rear, 500lbs in the bow.

Would pull a person out of the water up to 22.5 in about 10sec.

It doesn't even struggle with surf weight, had the best surf wave today yet that I've had.

Port & kgb full, port 750 full to the maxx, 500 still in the bow, 4 bodies on port seats and cooler in back seat corner. I'll get a picture of it from someone who has one.

Only good picture of the wake I have lol.. Stolen from sister in law..

http://images.tapatalk-cdn.com/15/04/11/0754d26bdf0e867e236ba862982b71ee.jpg


Sent from my iPhone using Tapatalk

MC25
04-11-2015, 11:23 PM
We blew up a hose today coming back from party cove. No riding today. :(

snork
04-12-2015, 09:32 AM
J hose?

BudmanV24
04-12-2015, 12:04 PM
J hose?

Yep!

Pulling into the ramp the bilge pumps were running constantly so I pulled the cover for the bilge plug and the water was almost up to the floor of the boat.

On another note, the boat runs great now. Plugs and wires did the trick. I can't wait to load it up with ballast and see how the 14.25x14 does.

snork
04-12-2015, 02:08 PM
Jeff's probably at TXMC/MB today

simba
04-19-2015, 07:07 PM
i have a 04 x-star with a yanmar 6lp 315hp 550ftlbs with the 8.1 transmission with 1.6 reduction. max rpm is 4200 and operating rpm should be 3000-3200. i wakesurf 80% with 3500lbs ballast total and wakeboard 20% with just factory ballast. dont ever go more than 30 mph and also dont cruise much at all. i would still like to be able to put more weight in for 22mph for some better riders. currently have 849 14x20. find it slow to plane weighted and top speed is 42mph which like i say, i dont need more than 35. considering an acme 2271. looking for any recommendations or pple who have the 2271 prop with similar setup other than the engine to see what rpm it runs.

BudmanV24
04-19-2015, 07:36 PM
i have a 04 x-star with a yanmar 6lp 315hp 550ftlbs with the 8.1 transmission with 1.6 reduction. max rpm is 4200 and operating rpm should be 3000-3200. i wakesurf 80% with 3500lbs ballast total and wakeboard 20% with just factory ballast. dont ever go more than 30 mph and also dont cruise much at all. i would still like to be able to put more weight in for 22mph for some better riders. currently have 849 14x20. find it slow to plane weighted and top speed is 42mph which like i say, i dont need more than 35. considering an acme 2271. looking for any recommendations or pple who have the 2271 prop with similar setup other than the engine to see what rpm it runs.

Pics!!

bet_on_black
04-19-2015, 10:22 PM
i have a 04 x-star with a yanmar 6lp 315hp 550ftlbs with the 8.1 transmission with 1.6 reduction. max rpm is 4200 and operating rpm should be 3000-3200. i wakesurf 80% with 3500lbs ballast total and wakeboard 20% with just factory ballast. dont ever go more than 30 mph and also dont cruise much at all. i would still like to be able to put more weight in for 22mph for some better riders. currently have 849 14x20. find it slow to plane weighted and top speed is 42mph which like i say, i dont need more than 35. considering an acme 2271. looking for any recommendations or pple who have the 2271 prop with similar setup other than the engine to see what rpm it runs.
Dude, please start a new thread with details and pics of your boat! Sounds like you've got something pretty awesome!

simba
04-20-2015, 02:02 AM
ya, i started one in this forum last week and it got deleted for some reason. i can show my boat off for ya if u want but im out of town till wed. still looking for x-star prop rpms relevant to this forum i think