Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Rocking Whale RW-BL1K Miniature Steam Engine Plant with some modifications & running a Blue Thunder Generator & Light
Added a steam condensate catcher, two step hobbed aluminium drive pulley and a brass knob to the Stephenson Linkage handle.

Very nice mods Jim. interesting way you "hobbed" the knurling on the step pulley.

Thanks Bruce, I've done many drive pulleys now and made up about 7 jigs for different sized axles.
It works very well and very similar to what a Wilesco drive pulley looks like.
Here's a brass drive pulley I hobbed yesterday -

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