Dolmar wanted something unique to advertise their chainsaws. The company decided to build a custom motorcycle called the “Dolmette” with 24 of their chainsaw motors. The combined motors make a total of 1.9 liters of displacement and output around 167 horsepower and 100 lb-ft of torque. The chainsaws put their power to the ground via a single belt drive system.
Dolmar explains the system below.
The heart of the combined power plant is the central drive belt casing of aluminium construction. As well as encasing the eleven belts used to couple up the individual engines, it also houses the exhaust ducts for the cooling air. Twelve engines are mounted in two rows of six on either side of the drive belt casing. Each engine is held in place by means of two threaded studs that normally serve to secure the guide bar to the chainsaw power head. The individual motors are coupled together in sets of three by means of a double-sided drive belt, making up eight modules in all. The individual engines are not rigidly connected; instead they deliver their torque through the centrifugal clutch that is a standard feature of every chainsaw.
Source: Dolmar (no longer active) via HackedGadgets
That is a wicked bike! Check out these engines builds. It’s a race to the finish for 3 guys swapping a 600cc bike engine. http://www.youtube.com/user/drinknoscanada NOS Caro
Thanks for the tip