Thursday, 7 September 2023

Interim Driving Truck

After receiving word from Mini Train Systems that my loco was nearly ready to be shipped but the wagons I had ordered from the were still some months away, I decided I needed to quickly build some sort of wagon to function as a "driving truck", ideally with a manually operated brake.

DNC System Technologies seemed the best source to obtain a pair of bogies, so I ordered a pair of their archbar bogies with the mechanical brake option.  After placing the order, DNC responded quickly to my email and provided a drawing showing the overall dimensions including the diameter and height above rail for the bogie pivot.

Armed with this information I designed a rudimentary wagon underframe which I could build with the tools and skill available.  I built the underframe in Perth and the 1.2 m length allowed for easy transport in the car to Denmark.  The main metal parts are the bolsters, which I cut from a surplus 50 mm square steel fence post, and the end sills which I made from 50 mm galvanised steel angle, also surplus from another project.  The idea was that the metal parts would fulfil the main load-bearing requirements, with pine for the remainder all held together with numerous screws and some angle brackets.


By chance, while searching online for a photo of the braking arrangements on the DNC bogies, I discovered a pair for sale on Gumtree in Mandurah, WA.  They were nearly identical to what I had ordered, except only one bogie had brakes.  As the order from DNC was going to take a while, I decided to buy the secondhand bogies as "insurance" so I would have something to use as a driving truck when my loco arrived.


It was a few weeks and another trip to Denmark before the underframe and bogies were united to form a functioning wagon.  I used a brake lever purchased on eBay and intended for use with a caravan or trailer to activate the mechanical brake just on one bogie at this stage.  A plastic step stool provided rudimentary seating for one person.


Somewhat following prototype practice, a long lever increased the braking force and also provided a point of attachment for future brakes on the second bogie


Another milestone reached with the first wagon on the railway able to carry a human passenger (but still no loco)!



Tracklaying in the Passing Loop

Although it will still be a while before the right hand point to complete the passing loop will arrive, I thought it worthwhile to set out t...