Wisconsin VF4D drivetrain

Discuss park gauge trains and large scale miniature railways having track gauges from 8" to 24" gauge and designed at scales of 2" to the foot or greater - whether modeled for personal use, or purpose built for amusement park operation or private railroading.

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Glenn Brooks
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Re: Wisconsin VF4D drivetrain

Post by Glenn Brooks » Wed Nov 03, 2021 7:32 pm

Yep, exactly. The large bolt in the jack shaft, draws the rear flange and jack shaft (in the clutch housing) forward towards the motor shaft, and the forward flange/coupler is torqued rearwards into the front of the housing. So basically, all of the tensioning forces holding the clutch assembly together, are drawing the components towards the motor, while the motor delivers torque in the opposite direction - towards the wheels. My guess is, the entire bolt pattern is meant to counteract the torque delivered from the engine to the gear box and wheels.
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Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....

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