18556Re: [z_scale] Re: Recommended track gradient
- Jan 1, 2004Greg:
> Bill do you remember if the discussion centered on getting traction byThe photo's showed tiny brass shims added to the bottom of the slots that the
> getting the drivers on the rails in forward motion, or was it also coupled
> to better electrical contact? (My memory says it was a traction issue, but I
> seem to remember something about crossing the frogs in a switch).
middle axles fit into. The slots are deeper than the diameter of the axles,
which allow the axles to ride up on the idler gears when in forward motion.
Easy enough to add..no drilling or gluing.
The purpose was to maintain wheel-to-rail contact for traction. About the
same time, however, a different author related his success in adding beryllium
copper power pickups to insides of these same center drivers. Still another
author added text/photos on tender pickup (my favorite choice).
I guess the size of the yahoo archives is limited, and even old messages fall
off the end of the earth in time. Which is a shame, because many questions
are as perennial as grass.
Hope this helps,
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