Actually all the 2 and 4 stroke chinese kits I've seen use Hilliard type clones which are go-kart type and much larger than the weed wacker clutches on my friction builds.We researched the majority of the current drive systems and found them based on poor engineering and poor quality control. Many are based around clutches designed for other uses such as roto tillers, edgers, weed eaters, etc.
So there is a toothless belt setup from motor to clutch and another chain based system to output sprocket?more importantly it won't damage the crankshaft of the motor [because it isn't installed on the motor].
Those experienced with Ultralight powerplants (Rotax, 2si, etc.) agree that gearboxes are most efficient, followed by chain, toothed belts, and least efficient, toothless. Are you saying your setup is different?Another major advantage to the Q-Matic is the high "pass thru rate". Many current drive systems consume a large amount of power, and when starting with 2 HP you can't afford to give up much.
Aren't your ratio options the same as changing rear sprocket on a chinese kit?The Q-Matic can use completely different drive ratios to increase gas mileage, run the motor at a lower RPM to increase the motor life as compared to other companies.
I'd also like to know what arrangement you have with your dealers. Do they pay full price for the units or is there a special deal?