Our "Mule" came about by a series of accidents you could say. For every motor configuration you have read about in these pages, some parts got destroyed, and others didn't. For the sake of having a motor strictly for the purpose of testing of different configurations and components, we assembled a motor from the bins of other broken motors to build our test "Mule".
The "Mule" was never intended to see a racetrack, but was instead supposed to have been solely for the purpose of the dyno testing. This plan served us well until -you guessed it - we needed the "Mule" to race with. Knowing the motor had a limited time span, we did our best to keep the time on the motor to a minimum and keep the motor alive long enough to get us by until we received the parts we needed to rebuild the Gen 5 motor.
That didn't go as planned either. Sadly to say, last Saturday, August 18th, 2007, the "Mule" weld-up crankshaft snapped during a practice session causing Mike Lohmeyer to have to sit the entire weekend out with nothing to race. This was a first in nearly 8 years of racing for Lohmeyer (not to race).
Bore x Stroke: 57.0mm x 44.5mm
Pistons: REC/G-Force Design
Rings: Yamaha FZR400 (3-Rings)
Bores: Millennium Aluminum/NikaSil sleeves
Rods: Carrillo Steel "H" Beam
Crank: Marine Weld-up stock crank.
Max rpm: 14,500rpm
Carbs: VFR 32mm CV with HRC F-III kit set-up (no airbox)
Race Fuel: VP Ultimate 4 (oxygenated)
DEMISE: Snapped Crank #3