x X X X X 507 SNOW BIKE SURVIVAL SNOWMOBILE ACCESSORIES HANDLEBARS / CONTROLS CABLES WINDSHIELDS BODY SKIS / RUNNERS FRONT SUSPENSION REAR SUSPENSION SHOCKS TRACKS / STUDS SPROCKETS ELECTRICAL EXHAUST ENGINE AIR / FUEL CLUTCHING BELTS BRAKES CHAIN / SPROCKETS LUBRICANTS / CHEMICALS TOOLS / HARDWARE TRANSPORT / RAMPS INDEX T-NUT STUDS Start with Steps 1 and 2 above. 3. Push a T-nut puller through hole from the outside of the track. 4. Thread a T-nut onto the T-nut puller and seat into the track. 5. Reverse your installation tool and remove T-nut puller from the T-nut while maintaining pressure on T-nut to keep it in the track. 6. Position backer plate onto stud. Put a drop of thread locker on the T-nut threads and stud threads. Be sure to align your backer plate with track lug. 7. Torque stud to 80 to 100 inch-lbs. and let thread locker dry for 24 hours at room temperature. TRACTION and CONTROL GUIDE 72 Studs 96 Studs 120 Studs 144 Studs 168 Studs 192 Studs 240 Studs STUD QUANTITIES Illustrations below are for reference only. May not apply to the make and model of your snowmobile. How many studs you should install: A good starting point is 1-1/2 studs per horsepower. When using this formula as a starting point, you can increase or decrease the number of studs to fit a pattern that best suits your riding style. We strongly suggest that you use not less than one stud per horsepower at any time. However, be careful not to over-stud. Over-studding will allow less penetration, resulting in a loss of traction. Also, if you over-stud you may lose the ability to turn. PUSH-THROUGH STUDS Start with Steps 1 and 2 above. 3. Position the stud into the hole in your track from the inside of the track. 4. Install the backer plate and lock nut onto the installed stud (Do not use Loctite™ when using nylon lock nuts). 5. Tighten the stud assembly using a deep well socket and allen wrench until the stud and backer plate bottom out against each other. Don’t over tighten the lock nut. Be sure to align your backer plate with track lug. STUD LENGTH Trail riders should use a stud that is no more than 3/8” (.375”) taller than the tallest part of your track. While some people use longer studs in trail and racing applications, you must take special precautions to ensure that you will not damage your sled or the traction products. Be sure to check your installation for proper protection of the tunnel, tunnel protectors and heat exchangers. FORMULA: T-nut Studs - Stud length + Backer plate (steel .190” or alum. .225”) + Track deflection (.045”) - Track lug height = Effective stud length. Example: .875” + .225” +.45” - .725” = .420” effective stud length. Push-through Studs - Stud length + Backer plate (.190”) + Track deflection (.045”) - Track lug height = Effective stud length. Example: .75” + .19” + .045” + .725” = .385” effective stud length. Recommended Stud Quantities Snowmobile Horsepower Traction for Trail riding Agg. trail, snowcross or X-country Drag racing Ice or Grass Oval Racing 0-60 72 72-96 96 96-120 60-75 72 96* 120 144 75-100 96 120 144 168 100-120 120 144 168-192 192 120-140 144 168-192 192 240 130-170 192 240 240 336 *Note: Refer to latest race organization rules for current stud regulations. RECOMMENDED STUD PATTERNS STUD INSTALLATION To ensure minimal stud loss, check for studs that have loosened after each outing. 1. Use Stud Boy’s studding template, paint marker and instructions and transfer the pattern of your choice on the track. 2. With a sharp Stud Boy track hole cutter, drill the pattern you marked on the track during step 1. Be sure to hold your cutter straight and watch while drilling to avoid damage to the idler wheels or other suspension components. TRACKS / STUDS / SPROCKETS
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