This Ultimate Racing V2 clutch system with B10 springs comes complete with a conical 34mm flywheel and three preinstalled aluminum shoes. The conical shape of the flywheel is optimized to avoid contact with the brake systems that are used in some of the newer cars on the market. The Compak clutch system is unique in that it allows you to prepare an entire clutch assembly external to your engine, and then quickly and easily remove the old one and install a new one. Installation is as easy as sliding it onto the crankshaft and threading the clutch nut.
This clutch system is perfect for all R/C enthusiasts from beginners to top pro drivers. You can choose from six different clutch springs to tune the clutch engagement to your driving style and for different track conditions. Larger diameter springs are stiffer and the clutch will engage higher in the RPM range. Smaller diameter springs are softer and will engage earlier in the RPM range.
The available springs are:
B8.5 - 0.85mm springs for very slippery tracks
B9 - 0.9mm for slippery track
B9.5 - 0.95mm for grippy tracks
B10 - 1.0mm for very grippy tracks
B11 - 1.1mm for very high traction or muddy conditions
B12 - 1.2mm for Rally Game class
This Compak clutch system consists of a 34mm red anodized aluminum flywheel with tempered steel pins, three aluminum clutch shoes, three B10 springs and a clutch nut.