The standard input shafts and drive plates supplied with virtually every popular engine dyno are of the same basic design that has been in use for over 10 years. They were never designed to repeatedly handle the torque of current 350 cubic inch race engines, so they certainly can't handle the output of a 500 or 600 incher. If you've run many high output engines on your dyno, you've learned about this shortcoming first hand; chances are, you've replaced the input shaft and drive plate more than once.

Now you can eliminate the problem. The SuperDrive Assembly, available for all SuperFlow dynos, is specifically designed to routinely handle continuous torque loads of over 1000 lbs./ft. Each SuperDrive Assembly consists of a 2" diameter, 10-spline input shaft that's machined from pre- heat treated premium quality steel alloy billet, and a drive plate manufactured of 6061-T6 aluminum.

Heat treating the billet before it's machined into an input shaft assures the ultimate in strength and precision. Add the sheer mass of a 2" diameter and you've got a shaft that's almost unbreakable.

The 13-1/4" diameter drive plate that's included in each SuperDrive Assembly is similarly engineered for maximum durability. Rather than limit pins, which can only handle about 450 lbs./ft., of torque (repeatedly) the SuperDrive plate Incorporates a spring-loaded geared center hub which allows four degrees of movement in each direction before the gear teeth on the hub lock against those on the plate.

Multiple clutch bolt patterns are another feature of the drive plate. With an 11" Borg and Beck, a 10-1/2" Long and two 11" Long (one with 3/8" holes, the other with 5/16" holes) bolt patterns, the drive plate can be attached to any standard single-disc type flywheel. Also available are drive plates that attach to a Tilton/Quartermaster style multi-disc flywheel. All SuperDrive drive plates are designed to eliminate time- consuming flywheel changes. With the proper SuperDrive plate, testing can be done with the same flywheel and starter that will be used when the engine is installed in a vehicle.

Do Your Engines Drive Your Dyno to Failure? Eliminate the problem with a SuperDrive Assembly