Proving it will work.

I started out by finding a chassis for the Plymouth that would run nice and slow, I found inspiration here:

http://www.nigellawton009.com/MPD18.html

But I wanted more than a 46:1 gear ratio. So I set off etching parts for my own chassis and ordering gears and motors from Nigel. To reduce the ratio even more I found these small gears inside a Radio Shack "ZipZap" mini RC car steering linkage:

Here they are adapted to the chassis:

And a quick video of it running:

http://www.youtube.com/watch?v=8LDjoc6wmdM

Now the gear ratio is 84:1. With the proof of slow running ability I can now start on my 8 ton porter. This chassis above will get put under a resin copy of the Minitrains Plymouth.