Winner's Circle

Photographer-Rowdy Jordan
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Branden Zinser
April 2012 - Spring Nationals of the
Midwest Chase'n Race'n ProKart Tour
Winfield, KS.

"I qualified 19th for the Pro Animal feature paying $1000 to win. In the 20 lap feature, I passed 18 karts with the help of only one caution to take the win. I was on a 2007 Phantom Icon racing everyone else on 2012 Tritons, Impulses, and other karts. I was using a two disc Vortex Roller Lever clutch. I ran Animal 340 and Animal 375 also that day. I won Animal 340 and placed 6th in Animal 375."

"The clutch performs perfectly race after race. Running an eighteen tooth sprocket really works the clutch hard but the engagement was always smooth. Even after a bunch of caution laps it never overheated. It's nice to know I don't have to worry about the clutch chattering or slipping unlike others I have had in the past. After making the switch to a two disc Vortex Roller Lever clutch I won't ever change again. It's simple to work on and setting the engagement can easily be done at the track with common tools and no guess work. Thanks SMC for a great clutch to put my Faster Motors power down!"

Thanks, Branden Zinser

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#35 and #219 Chain Sprocket Conversions

Go to the "Chain & No. Teeth" column and find the sprocket you are using now. To find the next closest sprocket of a different chain type go up or down one row and read the sprocket type and number of teeth from the same column.

The up or down choice is dependent upon the pitch diameters in the first column. Choose the sprocket with a pitch diameter closer to the original pitch diameter.

Example: You have #35 chain on your kart and want to convert to #219 chain. The engine clutch has a 15 tooth sprocket now. What #219 sprocket do you need for your new chain?

• Find the present sprocket (#35 - 15T) in the "Chain & No. Teeth" column. Note its Pitch Diameter (1.8037).
• One row up, the #219 - 18T sprocket has a Pitch Diameter of 1.7625. One row down the #219 - 19T sprocket has a Pitch Diameter of 1.8595.
• Compare all three pitch diameters.
• Choose the #219 - 18T sprocket because its Pitch Diameter (1.7625) is closer to the Pitch Diameter of the #35 - 15T sprocket (1.8037).

Structure Mechanics Corporation | Cincinnati, OH USA | 513.598.1600 | updated: 05.15.2012