Winner's Circle

Photographer-Rowdy Jordan
P&R Photos Image Solutions

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 & #219 Chain Sprocket Conversions
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SMC Sprockets

SMC Sprocket Design The clutch sprockets that kart racers use today were invented by SMC about 15 years ago.

Previously, the steel sprockets were welded to steel drums. Those old fashion, permanent assemblies retained enormous quantities of heat that diminished performance and accelerated wear. SMC solved those problems with an aluminum drum that dissipates heat five times faster than steel. It allows your clutch to run cooler which means it can engage as effectively on the last lap as it does on the first lap.

Aluminum and steel cannot be joined by welding. SMC engineers therefore redesigned the sprockets and drums with a mechanical connection. Hard steel sprockets can now be attached to thermally efficient aluminum drums without welding.

SMC's sprockets offer a secondary benefit. Because they are easily installed and removed, it is no longer necessary to have an equal number of drums and sprockets. Changing gear ratios has become less expensive.

SMC offers 28 SMC Sprocket versions, which include the High RPM Retaining Ring
Clutch Sprockets #35 Chain 10T - 23T
Clutch Sprocket Kits #35 Chain
Clutch Sprockets #219 Chain 13T - 26T
Clutch Sprocket Kits #219 Chain
#35 & #219 Chain Sprocket Conversions

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