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Thread: PTO coupler ?

  1. #1
    Canadian Beaver Inspector jkindt's Avatar
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    PTO coupler ?

    What is the difference between running the solid PTO coupler vs the rubber mounted coupler? Why did some ski's have one and others had the other? Are they directly interchangable? I see so many projects here have the solid coupler. Is there a problem with the rubber mounted one?


  2. #2
    PolarisNut's Avatar
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    The rubber one will strip out with high hp abuse (triple pipes and high rpm). I'd use the rubber one if you can, since its quieter and less abusive to the driveshaft and pump. Its also more forgiving to motor misalignment. The early skis used the solid one, since the rubber one wasn't out yet. The only new skis to use the solid couplers were the Pro's.

  3. #3
    Canadian Beaver Inspector jkindt's Avatar
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    Good enough! I got the rubber one and it looks to be in great shape. Finally, one piece I don't need to replace!!!

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    Lake Mead Bum & BTLS Mark starflight's Avatar
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    The solid weighs 14.3 oz and the rubber weighs a fuzz over 2 pounds.
    The solid has less rotating mass on the engine.

  5. #5
    Canadian Beaver Inspector jkindt's Avatar
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    Less rotating mass = crisper throttle response

    Similar to the lightened flywheel idea, eh?

    I think I may just stick with the rubber coupler until I get some more $$ and get a RAD flywheel or something like that. Then I will change to the solid coupler to go with it.

    Besides, I don't want to have to try to find a solid coupler. (Of course xlint probably has one sitting around.)

  6. #6
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Quote Originally Posted by jkindt View Post
    Less rotating mass = crisper throttle response

    Similar to the lightened flywheel idea, eh?

    I think I may just stick with the rubber coupler until I get some more $$ and get a RAD flywheel or something like that. Then I will change to the solid coupler to go with it.

    Besides, I don't want to have to try to find a solid coupler. (Of course xlint probably has one sitting around.)
    Of course I do!!!

    You want one???


    I prefer the SS coupler because of the less weight, and they rarely fail.

    The rubber dampned are reliable, don't get me wrong. But, they fail much more than the SS will.

    Lightened flywheel huh?

    Let me know when you're ready to talk.....

  7. #7
    Canadian Beaver Inspector jkindt's Avatar
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    Quote Originally Posted by xlint89 View Post
    Of course I do!!!

    You want one???


    I prefer the SS coupler because of the less weight, and they rarely fail.

    The rubber dampned are reliable, don't get me wrong. But, they fail much more than the SS will.

    Lightened flywheel huh?

    Let me know when you're ready to talk.....
    We are going to have to arrange a shipping container by the time I am done buying stuff from you and we are ready to ship!!! Which lightened flywheel do you have? (Crap, here I go again!!!)

  8. #8
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    I MIGHT have a Jetinetics available.... MAYBE when the time comes.

    I told you, get a U haul and take a day off work.

  9. #9
    Canadian Beaver Inspector jkindt's Avatar
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    Quote Originally Posted by xlint89 View Post
    I MIGHT have a Jetinetics available.... MAYBE when the time comes.

    I told you, get a U haul and take a day off work.
    Take a DAY off??? To go to Cleveland??? It is just 1885 mi. from here!!! It would take about 30 hours just to get there IF I could drive non-stop!

  10. #10
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    I was just kidding. You'd need to swing through Chicago on your way back home too. That's almost another 5 hours.

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