Tender lowered

Arguably, I should have built a whole new end beam, but replacing only the visible portion of the draft gear saved me from positioning eight bolts in two perfectly-aligned squares. It was a bit of a pyrrhic victory, however: assembling the shambles of shims and the mammoth metal plate that support the repositioned coupler and […]

Slow modelling to the rescue

I’ve decided that the tender was indeed too high, making the 3D-printed body bolsters and end beam superfluous. Having rediscovered that photo of 624 wrecked at St Polycarpe, I know the body bolsters were the wrong shape anyway, so no great loss there. The end beam, however, needs reconfiguration to keep the coupler at the […]

Tender chassis

The tender chassis went together quite quickly with all the 3D printed parts. Upon reflection and further measurement, the rear coupler was .01” too high. I shaved the bolsters down, and then everything looked pretty good – apart from the temporary coarse-scale wheels! The trucks are Kadee HTC caboose trucks, which are a reasonable facsimile. […]

Locomotive coupling level?

I just got the tender up onto its temporary wheels and checked the coupler height at each end. The rear looks okay, but the front is perhaps .010” too high. I’m wondering if a slight joggle in this coupling is okay, or will that have a tendency to lift the tender?

Motor and light connections

One thing I’ve learned in my short career as a locomotive builder is that I take my engines apart a lot. It won’t do to have soldered connections holding the boiler where the lights are to the chassis where the wheel rotation sensor is and to the motor. Fortunately, it seems like the 1mm headers […]

Learning about really tiny connectors

The 1mm connectors arrived from Digikey this week, and rather than leap straight in and wire up a decoder, I took the unusual step and practiced first. I’m glad I did! The connectors are delicate. Indeed, they barely hold together. I found that without a bead of CA to keep the pins in the plastic […]

A cab full of tungsten

The challenge with the 4-4-0 wheel arrangement is to move the weight distribution to the rear of the engine, toward the drivers. As I found previously, I need to squeeze a lot of weight into the cab. This weight takes the form of tungsten, 74% denser than lead and conveniently available from Woodland Scenics’ Pinecar […]

Sunken boiler

I was just about to start sheathing the boiler. It’s important to get the wagon top over the firebox right if the boiler is to fit the front of the cab at all. So, I had the Cricut cut out a template for the formers. It was then that i discovered the boiler was too […]

Really tiny LED

Somewhere between here and the other Vancouver, a package of gubbins from NGineering has been waiting for almost a month. The package contains some solder strippable magnet wire, the recommended flux and a handy-looking tool for holding the wire together with the tiny surface-mount LEDs that are available today. Tim Anderson of NGineering sent the […]

Cab roof for 622

More styrene has found its way into 622 with the addition of the cab roof. I formed this by heating some .015″ styrene in boiling water and fixing it to the outside of a can of Green Giant Niblets with rubber bands and some scraps of card. The Cricut made the carlines (the transverse members […]