Boxcab Rebuild cont’d

Refitting the refit…

Well, the method I had started to use to add a flywheel to the power unit didn’t work.  It looked cool, but the small motor used in these units is a bit limited in its power and could not drive the belt driven flywheel.  It actually decreased performance quite a bit.

The idea was to make a post mounted to the unit into which two ball bearings were pressed.  Pulleys would be turned on the lathe and a belt fitted to drive a flywheel pressed onto the shaft.  After all this was made the results were disappointing, so I abandoned the idea.

Last night I turned a smaller flywheel and pressed it directly onto the shaft of the PDT power unit.  Initially I did not think there would be enough clearance for this, but it actually fit quite well.

A test run confirms that it will work very well.  Nice slow speed performance at a consistent crawl.  Once I add a decoder with back EMF the performance should be even better.

Now I just have to figure out how to mount it to the chassis.

On to Next Section

-T.

About the Author:

I'm your host, Tim Warris, a product developer in Port Dover, Ontario. Since March of 2007 I have been documenting the construction of the former CNJ Bronx Terminal in HO scale. For my day job, I design track building tools for Fast Tracks, a small company I own and operate. Fast Tracks makes it fast and easy to hand lay your own trackwork. Stop by our website to learn more!

Posted by: Tim | 11-04-2008 | 08:11 PM
Posted in: CNJ 1000 Boxcab | Latest Posts