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  1. #1
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    Recommend a prop pitch for pulling up a skier?

    18' light weight, speedy type hull, with stock 2.0L 150
    Click image for larger version. 

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    I would like to be able to do a deep water start with a single ski. Not skinny tailed high performance ski. Just a regular recreational ski. I weigh 200lbs. In boat would be wife, and two little girls. Motor runs well. It runs well with a 23p for ordinary recreational runabout. But I was (just guessing) maybe a 17 pitch or something for pulling up a skier? Advice?

    -Peter
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

  2. #2
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    As U lower pitch pull would be better but will need to watch rpm. I suggest 19p with blades with a lot of surface area.
    Checkmate 2002 Convincor 270 496 MAG-HO

    2003 Cougar 22MTR w/300xs SOLD
    90 21Skater w/300xs - sold
    98 STV Euroski w/280 - sold


    2006 Trailblazer SS 6.0l 395hp

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    Likes David - WI liked this post
  4. #3
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    We used a 17” 4 blade with a 115 HO on a 19 JCraft (light outboard ski boat). The 115 had 2:1 gears and I assume you do as well. I would think 19 would be low enough for you

  5. #4
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    Getting back to this... Just tried my shortest pitch prop... a 21... and I just barely could not get up, deep water start on one ski. Two skis was easy peasy. I think I'm going to order a 19 and give it a try. I'm also going to try again today with the 21 (since it's the best I have and I almost made it last time).

    -Peter
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

  6. #5
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    I use a 19

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  8. #6
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    17 with lots of cup was my fav ski prop this was with a 2:1 lower unit ratio iirc. Have also run a 15 that was great. It depends on the HP and weight of the boat too imo but 17 is a great start
    Hydrostream dreamin

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  10. #7
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    I have a Checkmate trimate III. 16 foot, open bow with a 1990 Rude 140 V4. For top speed I run a 24" Raker and get close to 60 at 6k rpm. It comes out of the hole OK like this, and once it breaks over it takes off like a sling shot all the way to the top.

    Now, for what you are asking about. For skiers and tubers, I use a 3 blade 17" OMC prop. I forget what they call them, SRV, SRX, STV but it is the Teflon coated stainless steel that most of their motors left the dealerships with. The prop is in OK shape. It came with the boat when I bought it and originally had a 100 hp Johnson.

    Running on the current motor, it takes off like a bat out of hell. Skiers complain that I am going to pull their arms out, please slow down. Without a skier, if I trim the motor up and hole shot it, I can literally jump the boat out of the water where it is riding on the motor only. I am not sure how it tops out with this prop, maybe mid 40's but it will not rev over 6k, same as with the 24p. Not sure why that is. Motor is supposed to have a 6700 limiter not 6k.

    You might be able to get by with a 19p since you have a 150 hp which I assume is a v6. But if you were not able to get up with a 21, I would cut out all the stops and just go right to the 17.

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  12. #8
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    Are you sure the hull is light or the motor is right? Our 150HO will pull both my brother and I out at the same time on slalom skis, 17” Renegade. Our boat is light and has a bow tank. 370 lb combined.

    i Agee with dropping to 17”. I prefer to spend my energy skiing, not pulling out.

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  14. #9
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    I have a 16 ft V-bottom with a 2 liter 135 with a 2:1 gear. I use a 21p Trophy Plus for skiing and it does fine with everything except deep water slalom ski start. We can get up but it takes some time and effort. I'm going to look for a 17p High Five.

    The lower pitch will also get the revs up at running speed, which makes it easier for the motor to maintain rpm. When I 'slalom' the driver has to compensate a little otherwise the motor will drop rpm when you cut hard. It makes for an unsteady 'pull' from the boat which doesn't help slalom skiing.

    You can really tell the 2.0's don't have a lot of grunt down low.

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  16. #10
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    Quote Originally Posted by David View Post
    Are you sure the hull is light or the motor is right? Our 150HO will pull both my brother and I out at the same time on slalom skis, 17” Renegade. Our boat is light and has a bow tank. 370 lb combined.

    i Agee with dropping to 17”. I prefer to spend my energy skiing, not pulling out.
    It looks light. Although I haven't weighed it. Also the motor feels good. Idles well, then no stumbles or hesitation anywhere in the power band. I suppose that doesn't guarantee that it's strong. This is the hull. Not a lot to it:
    Click image for larger version. 

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    Quote Originally Posted by RoyE View Post
    You can really tell the 2.0's don't have a lot of grunt down low.
    Thanks, mate. I'm beginning to think you're right. One of my Whaler acquaintances has a 150HO ETEC and it's 2.6l. It has some bottom end on it that I don't think my 2.0l can match.

    Quote Originally Posted by David View Post
    i Agee with dropping to 17”. I prefer to spend my energy skiing, not pulling out.
    Love this ^^^

    Thanks for all the advice guys. Maybe I will cut straight to it and get a 17 instead.

    -Peter
    Last edited by pcrussell50; 08-21-2020 at 03:28 PM.
    "padded wonder"
    __________
    the wet:
    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

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  18. #11
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    2 suggestions


    1. install a set of deol fins. with the motor tucked in it will pop the tramson up.

    2. find a Torque shift prop. it starts a 13" pitch and switches to a 19 to 26" pitch. i've used since 1990 and they work very well on ski boats. them only catch 22 is you cannot surface the prop at all.



  19. #12
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    Quote Originally Posted by hsbob View Post
    2 suggestions


    1. install a set of deol fins. with the motor tucked in it will pop the tramson up.

    2. find a Torque shift prop. it starts a 13" pitch and switches to a 19 to 26" pitch. i've used since 1990 and they work very well on ski boats. them only catch 22 is you cannot surface the prop at all.



    Careful with those fins. Bought a boat for the motor and it had the fins on it. When going at speed, the fins were out of the water and if you turned sharply the fins hooked and pulled/pushed the boat over. If I was going faster and or turned harder, I am thinking I would have rolled.

    I always wondered why those shifting prop did not become popular. Good acceleration, good top speed, there must be some reason. I can see salt water not being their friend, but fresh water? And then there is the ventilated props. I have a few and can see the down side to that. My ski prop/non vent I can plane at just a bit over 10 mph. All of my vented props just drop off of plane at a certain speed, no lower then 15 mph. For the most part, that is OK, but I pull a bunch of little kids on tubes, knee boards and skis and they like to go SLOWWWWWWW. Vented props would not work.

  20. #13
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    ss minnow. you probably fell of the pad. i've used the fins since 1988 and never had an issue. i did have a 15' checkmate that fell off the pad on a regular basis, i got rid of it quickly.

  21. #14
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    A Bob’s True Tracker or an Allison foil would help planing and should be safe

  22. #15
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    Quote Originally Posted by hsbob View Post
    ss minnow. you probably fell of the pad. i've used the fins since 1988 and never had an issue. i did have a 15' checkmate that fell off the pad on a regular basis, i got rid of it quickly.
    I have had another boat with the fins too and there were no issues. Something about this boat was just off, or just right and it would hook drastically in a turn when the fin would contact the water. The boat had no pad, and I was not even going that fast. Never seen anything like that before but it was a pucker type moment, that was for sure. Just thought I would mention it, to be careful. Test what you got at slower speeds and increase as you are comfortable. I think most of that already know that, but I do not want to see anyone wreck.

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