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Enhorning F3B

Manufacturer:

Enhorning

Manufacturer ID:

3399

Category:

F3B

Product Type:

Plastic

Finish:

unpainted

Notes:

Enhorning offered this model powered, but the model shown in the photos has had the Pittman DC-94 motor removed from it. What appears to be very large weights over the frame of the model are actually lead gearboxes rigidly attached to the frame. The interior of the gearbox contains a large planetary gear driven by a cylindrical gear on the shaft from the motor. There are no universal joints. The vertical center shaft of the planetary gear serves both as the truck kingpin and the driver of the truck gearing. The bottom of this shaft is fitted with a 45-degree bevel gear which drives a mating bevel gear mounted on a shaft that in turn drives each geared wheel axle. The wheelset gears are also 45-degree bevel gears. The three-piece drive-wheel gearbox allows rotation about the drive shaft passing between them, thus permitting true equalization of the sprung wheelsets in the truck frames. This design is one of the smoothest, trouble-free drives ever. There are no universal joints, no plastic tubing. A true dummy unit was made, too; it had none of this in it; just free-wheeling wheelsets with no gearboxes.


copyright © Don Thompson

copyright © Don Thompson

copyright © Don Thompson

copyright © Don Thompson
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