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Thread: Re Pitch

  1. #1
    somefun's Avatar
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    Re Pitch

    Guy’s I want to try changing my trailing edge on my impellers does anyone have a photo of how much of the blade you do this to? I want to gain about 100 to 200 rpm's any idea of how many MM I should go? And a dumb question but I was told you use an adjustable wrench? Also which way would I want to bend the blade?


  2. #2
    Moderator Snoman's Avatar
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    Somefun,
    Go into the tech section look for the "impeller pitch update",,There you will find the pics you are looking for

  3. #3
    EZ Dock of Long Island Shibby1485's Avatar
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    with the impeller sitting flat on a table... you want to bend the trailing edge UP... NO MORE than 1 mm

  4. #4
    somefun's Avatar
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    Thanks guy's this sight is the best!!!!

  5. #5
    Yuji's Avatar
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    Make sure you measure all the blades first. This way you have a reference point for both impellers in case you have to go back.

  6. #6
    somefun's Avatar
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    Good thinking Yuji.

  7. #7
    Yuji's Avatar
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    I repitched my stock impeller again to try and improve the hole shot...but alas I think things are worse...47mph and worse bottom end. I went from 12/19 to 13.5/18 thinking I would gain bottom end and bring my previous best of 7850 rpm up to 8100. My damn supercharger outlet coupler keeps coming off so I'll fix that before I pass judgment on the repitch.

    Good luck with the bending!

  8. #8
    somefun's Avatar
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    I found on my boat that 1.0 was 300 RPM's. I left the leading edge alone even know it does slip but I think I have so much power it can't be helped. 1.5 did 500 R's. I'm going to pressure test the IC today and then put it all back to night so I can test it tomorrow after work. If it's still down at least I'll know it's not the SC or the IC or the motor and then Skat screwed up. At that point I'll bend the trailing edge 1MM and see how that goes.

  9. #9

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    Why is it that if I move mine3-4/1000 it changes it 75 or 100 Rpm? 10/1000's 250 rpm

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