Abstract: A test stand for internal combustion motors, is constructed to provide an optional test load for the motor. The motor is connected to an axle by a connecting member at one end of the axle mounted in the test stand. The opposite end of the axle is connected to a brake rotor having brake members in the form of ropes or strips affixed to its periphery. When the brake rotor with its brake members is rotated, friction arises between the brake members and the ambient air or gas. This friction provides the desired test load for the motor via the brake rotor and the axle.

Abstract: A housing for an internal combustion engine of the type used with portable chain saws having a cavity therein for a fuel supply and another cavity for lubricating oil. The engine housing is composed of at least an upper and a lower portion which are joined along a substantially horizontal dividing plane which is substantially parallel to the bottom plate of the lower portion of the engine housing. The dividing plane intersects the crankshaft casing of the engine whereby two separate closed cavities are formed for separately storing fuel and lubricating oil for said chain saw.