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  1. #1
    RC Racer
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    Sep 2009
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    Mandurah - Western australia
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    Jato ratio calculator

    if any jato owners out there are after a spurr/clutch bell/tire size calculator i've done a quick Excel calculator which gives spurr / clutch bell ratios , final drive ratios and effective ( including tyres) ratios which is all editable.

    If your interested PM me an email address and I'll send it over.
    or if someone knows how to host the .xls file that'd be even better.

    NOTE: this is suitable for jato only using Jato gearbox and diff ratois

  2. #2
    RC Turnbuckle Jr. Desert JATO's Avatar
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    Aug 2007
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    Riyadh, Saudi Arabia
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    5,661
    is this calculator on a web site ? if yes, just link it here...
    i'm not sure about how can i host a accel files ( if it's the .xl's you meant )

  3. #3
    RC Racer
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    Quote Originally Posted by Desert JATO
    is this calculator on a web site ? if yes, just link it here...
    i'm not sure about how can i host a accel files ( if it's the .xl's you meant )
    found a free online .xls hosting service.... wait for the countdown then download .
    JATO-RATIO-CALCULATOR

    screen shot



    Please let me know what you guys think
    Last edited by kamipalms; 09-25-2009 at 12:41 PM.

  4. #4
    RC Racer
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    Oct 2008
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    Australia
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    141
    Just looking at your pic you posted, it looks as if there something wrong with the single speed calculation. The single speed ratio shouldn't be a lower ratio then the 2nd gear of the 2-speed box.
    A sure cure for seasickness is to sit under a tree

  5. #5
    RC Racer
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    Sep 2009
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    Quote Originally Posted by Buckshot
    Just looking at your pic you posted, it looks as if there something wrong with the single speed calculation. The single speed ratio shouldn't be a lower ratio then the 2nd gear of the 2-speed box.
    Took a couple of hours just to find the single speed gear ratios but if your saying the single speed shouldn't be a lower ratio than 2nd gear could some one please let me know the single speed ratio or at least how many teeth pre drive and driven gears so I can correct this.
    The only info I found for the single speed was 20t/31t

  6. #6
    RC Racer
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    Oct 2008
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    Australia
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    Here's the corrected Excel sheet hope you dont mind the changes I made, they were for my own ease of use. http://www.tempfiles.net/download/20...TOR-FIXED.html
    A sure cure for seasickness is to sit under a tree

  7. #7
    RC Racer
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    Sep 2009
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    Quote Originally Posted by Buckshot
    Here's the corrected Excel sheet hope you dont mind the changes I made, they were for my own ease of use. http://www.tempfiles.net/download/20...TOR-FIXED.html
    No problems, thanks for the fix.

    I've also corrected the original version for single speed

    JATO-RATIO-CALCULATOR

    Didn't realize there were other spur / c/bell apart form the 54/56/58's. turns out there are 53/55/57's and also 17/21/23 c/bells

  8. #8
    RC Competitor
    Join Date
    Jul 2009
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    88

    Exclamation Best Gear Ratio Calculator I've Found Yet!!!!!!

    Quote Originally Posted by Buckshot
    Here's the corrected Excel sheet hope you dont mind the changes I made, they were for my own ease of use. http://www.tempfiles.net/download/20...TOR-FIXED.html
    Quote Originally Posted by kamipalms
    No problems, thanks for the fix.

    I've also corrected the original version for single speed

    JATO-RATIO-CALCULATOR

    Didn't realize there were other spur / c/bell apart form the 54/56/58's. turns out there are 53/55/57's and also 17/21/23 c/bells


    Awsome, Awsome, Awsome
    This is great, thank you guys!

    Keep Up The Good Work.
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