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Thread: Heelclicker clutching help, Mr Viper or someone

  1. #11
    Senior Member Open Mod norwegian's Avatar
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    Thanks so far. I tried with a 44/38 but it really really hated that set up, rpm was all over the place, like if my mains were clogged. I think I'm going to try a washer to the tip, maybe even a small nut, it gets almost 8100 rpm now.
    See the whole waterskipping at http://www.elgen.net/veivisr/srx-shooting2.wmv

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  2. #12
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    I'd like to run the green spring, because I might use this sled for some towing also. It also seems to feel much stronger with the green spring. The power curve of this sled reminds me more of a turbo machine than a regular one. What if I buy a 40/43 reverse cam helix? Looks like I need to have a steep angle to keep revs down on top end. It's like a 20-25 hp sled most of the low range, and then it tops out at 87 hp.
    Last edited by norwegian; 05-12-2018 at 06:34 PM.
    See the whole waterskipping at http://www.elgen.net/veivisr/srx-shooting2.wmv

    Stating the obvious is not neccesary!

  3. #13
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    So maybe this will work then?
    Primary: white hc spring. Max tip whic should be around 7grams with a nut on the other side. 4,2 gr heel, maybe even 5 gr, because it loads the entire range.
    Secondary: Green@60 deg. 39 deg helix. The less wrap should keep the revs down some also. This will be my last set up in the 17/18 season.
    Last edited by norwegian; 05-12-2018 at 06:50 PM.
    See the whole waterskipping at http://www.elgen.net/veivisr/srx-shooting2.wmv

    Stating the obvious is not neccesary!

  4. #14
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    Will it ruin my shift curve if I try some weight at the center?
    See the whole waterskipping at http://www.elgen.net/veivisr/srx-shooting2.wmv

    Stating the obvious is not neccesary!

  5. #15


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    Quote Originally Posted by norwegian View Post
    Will it ruin my shift curve if I try some weight at the center?
    no, it will just make it not as responsive, it might like the weight split thru out the weight and then run the straight angle helix if that's what it likes.
    It's just a little 700!

  6. #16
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    Update 9 c or 48f at the place I was going to, no more tuning this season. I am hoping that the engagement shim and less helix angle will make it get rid of the rpm dip on top and to get proper wot rpm also.
    See the whole waterskipping at http://www.elgen.net/veivisr/srx-shooting2.wmv

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  7. #17
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    What happens if I run a stiffer HC (gray) primary spring? Will I be able to get away with a steeper (41 deg) angle then?
    What happens if I run a Hauck or yamaha spring with less end force? Does the required helix angle go down too?
    See the whole waterskipping at http://www.elgen.net/veivisr/srx-shooting2.wmv

    Stating the obvious is not neccesary!

  8. #18
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    I'm at withs end wit this.

    This is my set up: 1,1 gram at the heel, 6,5 gram the center an 0 at the tip
    With this set up the sled revs all the way to 8150-8200, then settles to about 8000 after a while.

    My other set up is like the previous but with 3,3 gram at the tip
    With this set up the sled revs to about 8000, and at about 68 mph the revs fall to about 7500 and don't go up again.

    Both set ups with 39 dg helix at 70 deg, green spring and white heelcicker spring in primary.
    See the whole waterskipping at http://www.elgen.net/veivisr/srx-shooting2.wmv

    Stating the obvious is not neccesary!

  9. #19
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    Tried SMALLER rollers, and the RPM went UP. Shouldn't it be opposite? (14 instead of 15,6mm)
    So now the set up is
    1,1 gram at the heel
    7,8 g in the middle
    5,5 gr in tip.
    White hc spring in primary
    39 deg helix at 70 deg with a green spring.
    It revs to 8000 pretty fast, and at top end it drops down to about 7750-7800.
    How do I fix the initial overrev?
    See the whole waterskipping at http://www.elgen.net/veivisr/srx-shooting2.wmv

    Stating the obvious is not neccesary!

  10. #20


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    Doesn’t the heel clicker instructions say not to run that size roller ?
    Just going off memory here, but check out the instructions.
    -------------------------
    1997 Yamaha XTC
    700 Redhead, Mr. Viper ported, CPR pipes, 20CC Domes, boost bottle, SRX reeds, Heelclickers, Dual bulb, LT Ohlins

    1997 700 SX
    Thinned head gasket, Gutted Airbox, Reed Spacers, Bender Pipes, Viper Shocks, 51/43 helix 89L weights

    2004 Viper S
    SLP pipes, peak performance head,

    2001 SRX 700
    Power Inc. Pipes

    1997 Mountain Max 700
    Black XTC Hood, Thinned Head Gasket, Gutted Air Box, Reed Stopper Notch, SLP Pipes

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