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ProStar190Fan
05-28-2008, 05:14 PM
Alright so im new here and i just got my first Mastercraft. Its a Prostar 190 1988 and it needs a new prop, any suggestions? I've got the ford 351 240hp and right now a 3 blade but would like a 4 that can pull a lot but also go fast. Thanks


Tom
Prostar 190 1988
Ford 351 240hp

east tx skier
05-28-2008, 05:17 PM
Alright so im new here and i just got my first Mastercraft. Its a Prostar 190 1988 and it needs a new prop, any suggestions? I've got the ford 351 240hp and right now a 3 blade but would like a 4 that can pull a lot but also go fast. Thanks


Tom
Prostar 190 1988
Ford 351 240hp

I would call both Bill at Acme and Eric at OJ and tell them what you're using the boat for.

This may be helpful as well.

Prop Comparison (www.easttxskier.com/proptest.html)

TMCNo1
05-28-2008, 07:18 PM
Contact Eric @ OJ Props, http://www.ojprops.com/

justinglow
05-28-2008, 07:24 PM
Prostar190fan I sent you a PM.

jasonba1
06-04-2008, 02:43 PM
http://tmcowners.com/teamtalk/showthread.php?t=23870

I have some OJ XMP CNC Props for sale that you may be interested in. The link is above to the original posting. All I have left is the three blades but if you will read up on this 3 blade I would say it is what you are looking for. The price is 265 plus shipping which is alot cheaper than anywhere else. If you have any questions please feel free to email me at jbaggett@tnrmt.com

sk8salomon
06-04-2008, 03:38 PM
i put a 4-bladeOJ (13x13) i think on my 89PS190 and it was much better. lost about 1-2 mph but gained hole shot. who skis over 36mph anyways?

BrianM
06-04-2008, 03:46 PM
That boat is going to perform MUCH better with either an Acme #541 or an OJ XMP 13x12.5. Both of those are CNCd 3 blade nibral props. Will give you tons more hole shot and keep the same top end. Plus they are silky smooth. I had the Acme on my '88 and it was the single best improvement I made to the boat besides Perfect Pass.

justinglow
06-04-2008, 04:13 PM
Brian I had a 13x13 OJ 3 blade on my boat. I just bought an XMP 4 blade 12.5 x 12. Should I notice a big improvement? I haven't put the boat in the water. Hoping to this weekend.

ProStar190Fan
06-04-2008, 04:42 PM
it was the single best improvement I made to the boat besides Perfect Pass.

WHAAAAAT. I think i am one of the few who HATE, HATE, HATE, perfect pass.:mad:


Tom

BrianM
06-04-2008, 04:43 PM
Brian I had a 13x13 OJ 3 blade on my boat. I just bought an XMP 4 blade 12.5 x 12. Should I notice a big improvement? I haven't put the boat in the water. Hoping to this weekend.

I would imagine so. I have never run the new 4 blades. I would imagine that if Eric recommended it for your application it should perform well. What is your main use of the boat?

BrianM
06-04-2008, 04:46 PM
WHAAAAAT. I think i am one of the few who HATE, HATE, HATE, perfect pass.:mad:


Tom

Uh yeah. Probably the only one that hates PP. Remind me not to ski with you driving :D

stuartmcnair
06-04-2008, 04:47 PM
I have an 89 with an OJ 14x18 four blade stainless...hole shot is sick but I lost a tad on top end...tops out at 40

justinglow
06-04-2008, 04:48 PM
I would imagine so. I have never run the new 4 blades. I would imagine that if Eric recommended it for your application it should perform well. What is your main use of the boat?

Slalom mainly.

BrianM
06-04-2008, 04:49 PM
I have an 89 with an OJ 14x18 four blade stainless...hole shot is sick but I lost a tad on top end...tops out at 40

That is with a Powerslot though. He has a 1:1.

ProStar190Fan
06-04-2008, 04:50 PM
Uh yeah. Probably the only one that hates PP. Remind me not to ski with you driving :D

I think it takes the skill out of driving. when your skiing in a competition i have no problem with it since its required to ski at a certain speed. but only a good driver who knows the boat can keep the speed constant. that is the kind of driver i am.

BrianM
06-04-2008, 04:51 PM
Slalom mainly.

I will be very interested to hear what you think about the prop and to see if you lose anything off the top end. I was very happy with the performance of the 3 blade XMP 13x12.5 that I tried on my boat and am currently very happy with the Acme #541 which is the same diameter and pitch. Great slalom props with a nice increase in hole shot and NO top end loss.

justinglow
06-04-2008, 04:53 PM
I will let you know after I run it. I would like to get out today but we have 40mph winds here in North Texas. Suppose to continue through the end of the week!!:mad:

BrianM
06-04-2008, 04:55 PM
but only a good driver who knows the boat can keep the speed constant. that is the kind of driver i am.

I know some people swear that the best pulls ever where with some of the old school tournament hand drivers and I don't doubt that. BUT unless you are one of the few old time tournament drivers still living I doubt you can pull as well as PP does.

justinglow
06-04-2008, 04:56 PM
I will be very interested to hear what you think about the prop and to see if you lose anything off the top end. I was very happy with the performance of the 3 blade XMP 13x12 that I tried on my boat and am currently very happy with the Acme #541 which is the same diameter and pitch. Great slalom props with a nice increase in hole shot and NO top end loss.

A friend of mine let me try his stainless 4 blade. 13x 13.5. That was an awesome prop. I liked it a lot. Hole shot was great. The problem in Texas is that we have a lot of "hidden treasures" in our lakes. It's bad enough to hit something with a nibral but it's game over and a lot of damage when you do it with a stainless.

ProStar190Fan
06-04-2008, 05:03 PM
I know some people swear that the best pulls ever where with some of the old school tournament hand drivers and I don't doubt that. BUT unless you are one of the few old time tournament drivers still living I doubt you can pull as well as PP does.

Well i guess you have me there at that i am not an old tournement driver, i guess im just old school when it comes to driving.


Tom

sk8salomon
06-04-2008, 05:07 PM
I have an 89 with an OJ 14x18 four blade stainless...hole shot is sick but I lost a tad on top end...tops out at 40 exactly my experience too!

I think it takes the skill out of driving. when your skiing in a competition i have no problem with it since its required to ski at a certain speed. but only a good driver who knows the boat can keep the speed constant. that is the kind of driver i am.

dude, sorry but you are doing more bad stuff to your sking than good. practicing behind non-PP driver, getting used to it, then running behind PP in a tourney is night & day. unless you are a 28 mph longline or 15off skier, that is crazy! everything changes with speed control.

edit: or doesn't change i mean!

sk8salomon
06-04-2008, 05:11 PM
Well i guess you have me there at that i am not an old tournement driver, i guess im just old school when it comes to driving.


Tom

seriously, what line lengths do you pull manual? and speeds?

BrianM
06-04-2008, 05:15 PM
I have an 89 with an OJ 14x18 four blade stainless...hole shot is sick but I lost a tad on top end...tops out at 40

Call Eric at OJ and ask him to send you a 13.7 x 17.5 OJ XMP 4 blade. That prop is AMAZING on the older slot boats. Massive amounts of hole shot, more top end and silky smooth.

ProStar190Fan
06-04-2008, 05:18 PM
to answer your question i pull everything manual. I am very casual with my skiing and driving.

sk8salomon
06-04-2008, 08:34 PM
to answer your question i pull everything manual.

that's what SHE said!

robin
06-04-2008, 10:24 PM
im looking at a new prop for my 1999 sportstar (tbi 310hp vortec). bill from acme suggested the #475 13 LH 12.625 three blade nibral 1" bore .080 cup for my boat/application-skiing only. anyone tried this prop? i see that brianM uses the 541, with 12.5 pitch.....wonder which would be better....think brianM's boat would be the same set up....(maybe less hp though)? any thoughts?

Chicago190
06-05-2008, 04:03 AM
im looking at a new prop for my 1999 sportstar (tbi 310hp vortec). bill from acme suggested the #475 13 LH 12.625 three blade nibral 1" bore .080 cup for my boat/application-skiing only. anyone tried this prop? i see that brianM uses the 541, with 12.5 pitch.....wonder which would be better....think brianM's boat would be the same set up....(maybe less hp though)? any thoughts?

I believe Acme and OJ will both allow you to test multiple props to see which is better for your application. Either way, their suggestions are usually spot on. I can't wait to get my boat running again and try out a new CNCed prop to see the difference.

BrianM
06-05-2008, 08:01 AM
im looking at a new prop for my 1999 sportstar (tbi 310hp vortec). bill from acme suggested the #475 13 LH 12.625 three blade nibral 1" bore .080 cup for my boat/application-skiing only. anyone tried this prop? i see that brianM uses the 541, with 12.5 pitch.....wonder which would be better....think brianM's boat would be the same set up....(maybe less hp though)? any thoughts?

You have 35 more ponies than I do. I would imagine that the #475 is going to give very similar results to what the #541 does on mine.

Skipper
06-05-2008, 08:46 AM
Just switched from 3bld ACME to 4bld ACME on my 1995 Prostar 190 (1:1, 275hp) used only in the slalom course 32-36mph. The biggest gain was actually a reduction or flattening of the wake with the 4bld. Before making the switch I contacted Gary at Delta Propeller for his opinion. Also gave me a discount code saving almost $100.00.

EJ OJPROP
06-05-2008, 09:07 AM
Most of the slalom guys prefer, or so it seems, the 4-blades. Bill, have you tried an OJ XMP 4-blade?

BrianM
06-05-2008, 10:36 AM
Most of the slalom guys prefer, or so it seems, the 4-blades. Bill, have you tried an OJ XMP 4-blade?

Why is that Eric? I have found that these 3 blade CNC props are much nicer in the course. The bonus being that outside the course for footing and such there has been no top end loss.

EJ OJPROP
06-05-2008, 11:01 AM
I say that from the comments I get from a lot of skiers. They seem to like the "feel" of the 4-blades, especially with the reduction gear transmissions. The 3-blades on 1:1 "feel" stiffer/stronger than a 4-blade. Just feedback from skiers. I think it's personal preference really.

stuartmcnair
06-05-2008, 12:18 PM
Call Eric at OJ and ask him to send you a 13.7 x 17.5 OJ XMP 4 blade. That prop is AMAZING on the older slot boats. Massive amounts of hole shot, more top end and silky smooth.

I would love to...but the divorce would be much mor expensive than the prop... :D

BrianM
06-05-2008, 12:50 PM
I would love to...but the divorce would be much mor expensive than the prop... :D

There is lots of debris out there. A 'dinged' prop surely warrants replacement.

BrianM
06-05-2008, 12:55 PM
I say that from the comments I get from a lot of skiers. They seem to like the "feel" of the 4-blades, especially with the reduction gear transmissions. The 3-blades on 1:1 "feel" stiffer/stronger than a 4-blade. Just feedback from skiers. I think it's personal preference really.

That probably explains why I like my 3 blade then. Firmed up the pull a bit in the course. Making my lower hp boat feel a little closer to the newer higher hp boats pull.

Skipper
06-05-2008, 01:12 PM
There is more to the prop than just WOT RPM, top speed, and hole shot. We have a variety of props to choose from these days. Not just 3bld or 4bld or material, but props can be trimmed and cupped. Aside from which prop is technically correct for any specific application much of the decision is personal preference.