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Formula 500 - Wikipedia

    https://en.wikipedia.org/wiki/Formula_500
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Rules - International Snowmobile Racing, Inc.

    http://isrracing.org/rules.cfm?aID=10014
    Racing Aspects & Rules. Asphalt Racing; Cross Country; Cross Country - Junior; Drag Racing Junior; Enduro; ... I-500 Race Committee Midwest International Racing Assn. USSA United States Snowmobile Assn. ... International Snowmobile Racing 1527 N Railroad Street. Eagle River, WI 54521 Phone. Office: 262-335 ...

Rules & Classes - Snowmobile Racing | USSA ProStar

    https://ussaprostar.com/rules-classes/
    This class uses standard F-500 rules and procedures. This class is open for Junior Advancement procedures if a Junior rider so desires to enter the class. Limited 500 – This class is a 500-cc engine volume class with relatively stock engine packages and an Open chassis design. It is a stepping stone to Champ classes giving the rider the ability to learn the nuances …

racingonly - Hooper Race Engines

    http://hooperraceengines.com/racingonly.html
    GENERAL RULES 1. Snowmobile must comply with the GENERAL RULES AND REGULATIONS section. 2. The sled must originate from 1989-1992 Polaris Indy 500 carb. model. 3. The brand of hood, engine and logo need not match. 4. Removal of any material from total machine by means of heat, acid, drilling, grinding,

Formula 500 Design/Build Help - Hooper Race Engines

    http://hooperraceengines.com/F500help.html
    Prepping skis & carbides: You need to make certain the flat back of the carbide is resting solidly against the ski. Even. though the carbides only have 3/8" studs, we machine slots 1/2" wide and 5/8" long to allow. clearance for the weld holding the stud. We have tried using smaller holes and grinding down the weld, but it weakens it and when.

Official ISR Racing Rules - Woody's Traction

    https://www.woodystraction.com/racing/official-isr-racing-rules/
    If you have questions about snowmobile racing rules, please contact the ISR. International Snowmobile Racing, Inc. 1527 N Railroad Street. Eagle River, WI 54521. Office Phone: 262-335-2401. Email: Email ISR through the Contact Us tab on the ISR website.

F500 Snowmobile Racing | Facebook

    https://www.facebook.com/groups/218031448394285/
    A group for Formula 500 Snowmobile Racing. Buy and Sell Group

Wahlracing.com Feature: Build a Formula 340/500 Race Sled!

    https://www.vintagesleds.com/racing/downloads/formula-340racer.pdf
    The 1992's are 38" wide, and the rules state you can only be 38", carbide to carbide. In Formula 500 only, your 38" can have a 1" offset. I first tried just replacing the rods with newer ones from another Indy - that will not work. You have to make them if your sled is as old as mine.

F500 Race Sled Build

    https://f500build.blogspot.com/
    F500 ice oval sled build formula 500 ice oval sled build formula 500 ice oval sled f500 ice oval sled oval sled race sled. F500 Race Sled Build Wednesday, 20 January 2016. I HAVE A NEW PROJECT !!! 1979 Ski-doo Snopro. Template for the bird cage ready to go just need to order the Chromoly tubing and get bending cutting and welding.. ...

F500 Snowmobile Racing - Facebook

    https://www.facebook.com/groups/218031448394285/forsaleposts/
    All Items For Sale. $500. 1991 Polaris indy 500. Barre, VT. $4,200. 1994 Polaris indy f440 supersport. Schofield, WI

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