Last week I shared with you my designs for a set of replacement Bachmann HO 4-8-4 axles as shown below.

The locomotive was tested and ran smoothly with new axles fitted: the set of four axles are available in my Shapeways shop here.

One thing which I wasn’t sure of last week was one of the original axles has a square center section rather than circular as the other two.  I have since been informed by a fellow modeller that the orignal version of this locomotive also had smoke but the smoke unit had a section which was driven from this square axle to create the puff effect.  As the model was improved this feature was removed but the square axle was never updated.

This coming weekend, 9th to 11th March 2018, is the N Trak convention in Bournemouth, England and again it’s at The Trouville Hotel.  You can read a bit more about last year’s convention here and the 2014 convention here.  I’ll be there over the weekend if you are in the area and want to come by and say hello.