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  1. #1
    SLASHER's Avatar
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    Spark V Tech tune and re pitch

    If your are looking at a tune , then grab a V Tech but highly recommend re pitching prop to gain max Speed ..

    I am using the 402 8600 tune and removed 4mm of the trailing edge which gave me a 400rpm gain ..

    Click image for larger version. 

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  2. #2
    SLASHER's Avatar
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    Remove 4mm :

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  3. #3
    I finally got ONE!!! ;) RXT-260-DOO's Avatar
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    Hey Slasher, I am at 7600 rpm and 43 mph with 90 hp spark. I am also at 8000 feet of elevation. I need decrease my pitch by 4mm in order to get to 8000 rpm's, correct? Basically what you did just to get to stock rpm's.

  4. #4
    SLASHER's Avatar
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    I was seeing 8000rpm on the stock 90 set up and 50 mph ...

    Repitch prop and seeing 8400 at 52+mph

    Yours sounds like 60hp

  5. #5
    Quote Originally Posted by SLASHER View Post
    I was seeing 8000rpm on the stock 90 set up and 50 mph ...

    Repitch prop and seeing 8400 at 52+mph

    Yours sounds like 60hp
    He's dealing with high altitude. As the water warms up, I will be also. It is amazing how much altitude sucks power.

  6. #6
    SLASHER's Avatar
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    Dam 8000 ft , iam about 100ft only ...

  7. #7
    I finally got ONE!!! ;) RXT-260-DOO's Avatar
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    Quote Originally Posted by Wire4Money View Post
    Quote Originally Posted by SLASHER View Post
    I was seeing 8000rpm on the stock 90 set up and 50 mph ...

    Repitch prop and seeing 8400 at 52+mph

    Yours sounds like 60hp
    He's dealing with high altitude. As the water warms up, I will be also. It is amazing how much altitude sucks power.
    Where do you ride? Colorado Rockies for me.

  8. #8
    Quote Originally Posted by RXT-260-DOO View Post
    Quote Originally Posted by Wire4Money View Post
    Quote Originally Posted by SLASHER View Post
    I was seeing 8000rpm on the stock 90 set up and 50 mph ...

    Repitch prop and seeing 8400 at 52+mph

    Yours sounds like 60hp
    He's dealing with high altitude. As the water warms up, I will be also. It is amazing how much altitude sucks power.
    Where do you ride? Colorado Rockies for me.
    central oregon. 5000 ft elev.

  9. #9
    On our 90 hp ibr we got 8400 with the tune but only 50.8 mph . By repitch we got 8060 rpm and 54.5 mph

  10. #10
    SLASHER's Avatar
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    Iam interested what the New Solas prop will do with the new scoop grate ???

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