dr posted on 
thought I'll share this idea I had...
make a simple diesel engine and throw in one or two of these old lego
weight blocks in the front above motor for good measure...then run a
lego wire from the 9V motor then strip the other end off to solder onto
two leafspring-shaped metal pieces that would sit between the two axles
on the dummy bogey to pick up the midrail power.
seem like it could work and wouldn't be too difficult aside to figuring
how to clamp the pickup shoes on (may have to stuck it permamently onto
the lego rail axles for one)
make a simple diesel engine and throw in one or two of these old lego
weight blocks in the front above motor for good measure...then run a
lego wire from the 9V motor then strip the other end off to solder onto
two leafspring-shaped metal pieces that would sit between the two axles
on the dummy bogey to pick up the midrail power.
seem like it could work and wouldn't be too difficult aside to figuring
how to clamp the pickup shoes on (may have to stuck it permamently onto
the lego rail axles for one)
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