2/25-3/2 reengineering, updating dyno drive system. The big dyno starter drive is mounted to the high speed dyno drive shaft used by 99.99% of the engines we tune. From experience I know that the “blower” (Gates PowerGrip toothed) belt drive we to reduce absorber speed 33% is on the edge at 500+ HP (remember how we noticed it literally smoking hot after each of Justin Durand’s Vmax 4 turbo dyno runs). So, we must on occasion remove the belt reduction and drive the dyno absorber at engine output shaft speed. But in doing so we lose the function of our electric starter.
Don Emery and Tommy McConkey are planning to come back with Tommy’s big four cylinder radar run sled (they made the first 500+ HP dyno run here with n2o and have run 192mph with n2o). This time, they have made the engine bigger and stronger, and engaged turbo madman Gus Bohne to create a turbo system for this engine with hopes of even more power.
Since this huge engine has only pull-start, and will have to be run with the absorber at crank speed, I’m creating a high speed electric starter drive for the main drive shaft. This requires making some custom parts, and chasing around for a high speed automotive starter with the largest possible drive gear, hence the extended down time.
3/4 Andy Caffaro PS1000 Polaris
3/7 Ken Pielechowski PS800 SkiDoo
3/10 DNE, Tommy McConkey and Gus Bohne tuning Tommy’s monster two stoke quad with huge turbo sysem, hoping for enough HP to add 10 mph to his 190mph radar run sled
3/11 Barry Britton & son, tuning two hilldrag sleds
3/13 (rescheduled) Polaris ProR 800 tested with Aaen, BMP, DynoPort, and SLP pipes (and PCV maps created where necessary). Then if we find good power improvement, Casey Mulkins will install the cylinder shim/ revised head again. finally great success with pipes/ shim kit! results posted!
3/15 Sean Dingman/ Todd Hogan SkiDoo 800 twin hilldragger
3/24 Dan Cerio tuning a Cat 1000 hilldragger