Big bore + 155 mag pump = what prop?

[McDog]

I'm actually thinking of sticking a tbm pumpstuffer in a complete oem 155 pump assembly from a gp1200 and matching it up with a big bore 760 in surf orented aftermarket hull like a aquabot v2. If its even possible to get a prop pitched that shallow enough, the question is what prop and what pitch?

 

[Big Kahuna]

Talk to Taylor about running the 155, or Speedysprocket. Taylor had a OEM 155 in an edge at havasu that ran really good. Don rode it.

 

[McDog]

Taylor Curtis?

 

[CD155MX]

Talk to Taylor about running the 155, or Speedysprocket. Taylor had a OEM 155 in an edge at havasu that ran really good. Don rode it.

Taylor Curtis?

 

[McDog]

Thanks. I just asked about it on the comments.

 

[Krenn Power Sports]

I'm actually thinking of sticking a tbm pumpstuffer in a complete oem 155 pump assembly from a gp1200 and matching it up with a big bore 760 in surf orented aftermarket hull like a aquabot v2. If its even possible to get a prop pitched that shallow enough, the question is what prop and what pitch?

I was planning on the same thing except a fixed steer.... post what you found out if you don't mind! i have the motor, just now looking at pump options

 

[Kohldanielzimmer]

Rickter talk thread:

I spent some time on TC ski with the 701/155 pump. It is awesome! Seriously awesome. I'm running a 1100/skat 148 in my edge and his ski just makes you smile and ride. If I were surf only it would be exactly the setup I would run. FYI, he is running a 7/10 impeller on the stock 155 pump.

 

[McDog]

7/10. Wow! Closest I can find is Thrust with a 7/15. I guess it will have to be a custom bent prop either by me or someone else.

 

[Proformance1]

I would say thats a decent starting spot at 7/10 No matter what all props are custom made. It just depends what someone has guessed at for inventory Skat only makes to order. You would really need more details on your motor, pipe, electronics, ride style, etc. But with a surf hull the heavier the higher you need to go. So without more data thats a good guess.

 

[madd_dips]

I have seen some skat 6/15 floating around. And have heard they are having great results.

 

[JetManiac]

7/10. Wow! Closest I can find is Thrust with a 7/15. I guess it will have to be a custom bent prop either by me or someone else.

7/10 is odd choice if correct, not much difference between numbers. We stock the 6/14, but like proformance1 said we can custom order any pitch from skat.

 

[eastcoastjumper]

@McDog

He ran a 7/10 swirl. Was a big hub prop. I saw it before he put it in the ski.

I also spent a bunch of time riding it at his lake and in the surf. That pump setup made that ski really shine. That thing is a competition level freeride ski ready to go.

 

[D-Roc]

I run a e-9/15 skat swirl on my 771 with the tbm pump stuffer hub.


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[McDog]

I run a e-9/15 skat swirl on my 771 with the tbm pump stuffer hub.


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Your's is a modded oem rn hull, right? I was actually looking for your build thread earlier today.

 

[D-Roc]

Yes. I have always like the 12/17 pitch for riding style but on a 155 pump I would need a big ass reduction nozzle. I am running a 90mm ring in my nozzle now. I can go upto 95mm if I remove the ring altogether. I just wasn't sure my small motor could hit hard enough running a 12/17 with a 95mm nozzle so I opted for the 9/15. I think anything lower is too low but not everyone has an adjustable reduction nozzle to play with.


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[rubbertoe]

Yes. I have always like the 12/17 pitch for riding style but on a 155 pump I would need a big ass reduction nozzle. I am running a 90mm ring in my nozzle now. I can go upto 95mm if I remove the ring altogether. I just wasn't sure my small motor could hit hard enough running a 12/17 with a 95mm nozzle so I opted for the 9/15. I think anything lower is too low but not everyone has an adjustable reduction nozzle to play with.


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But isn't it true that you can run a taller prop gearing on an oem 155 pump vs a mag ?

 

[D-Roc]

That's what someone said. I have not proved this to be true or false so I won't be able to say for sure.


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[D-Roc]

Personally I would run the 9/15 and go bigger on my reduction rings until I had the motor loaded enough. If I had a 12 or 14 vein section in my pump. I always want to run the tallest prop I can pull, not the shortest.


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[McDog]

One would think.

 

[rubbertoe]

Cool ,just noting some input that It was just my understanding that a pump can be loosened up in other ways as well.Either via the reduction nozzle dia. or the number of veins in the stator or even the prop proximity to the stator section .i guess its all part of the recipe to prop size ?