Bogies: Prototype

The first prototype is finished.

As I’ve already described, I’d like to build a consistent set of waggons to build a short train for my porter loco.  Of course, that entails waggons. Which run on bogies. Turns out, it’s not that easy to find suitable bogies for Fn3 which stay in a reasonable pricing range. So during winter 2020, I started busying myself with the construction of a bogie prototype.

A particular “thank you” goes out to Gerd, AKA “Waldbahner”, who published a nice series of posts about 5” bogies on his website. I let myself wantonly inspire by those. Extra thanks to Gerd, who kindly allowed me to use some of his pictures of his own projects.

DelTang Tx22 Assembly

As I have already mentioned in my post on powering my porter loco with Li-Ion accus, I’d like to experiment with the DelTang system. There’s a lot of positive feedback from other model railroaders and all my requirements seem to be met – with further room for improvements.

Unfortunately, with the upcoming Brexit the demand for DelTang components has skyrocketed at the moment (meaining autumn 2019). I was lucky to get my hands on one Tx22 transmitter and two Rx65c receivers. It will suffice for the moment, but I will need further components, especially spares.

Porter Tender: Blueprints

After the basic requirements regarding the dimensions were cleared, an extensive online Image research took place. Apparently, opinions are divided whether a model Porter with a tender is a prototypical sight. Fortunately, I can avoid this topic altogether because I’m not going to model an explicit prototype. Instead, I’ll experiment with different themes and decide on a case-by-case basis whether and to what extend I’ll let the prototype reign supreme or just get some inspiration for my own creations.

New Construction Report: Porter on Battery Power

Since last September I’ve worked on a project, which I’d like to present now. It’s about a small Portor steam locomotive by LGB, which I want to switch over to battery that is accumulator power, controlled by R/C. At a later time I’d also like to adapt the looks.

Tender Mockup made of paper
Tender Mockup made of paper

This loco is supposed to make the starting point for my own garden railway, hopefully within this year. September and October were spent with some experiments to place all the necessary components within the locomotive. Alas, I had to take away too much of the lead ballast, so the loco wasn’t able to transmit its motive power to the rails.

Trailing Wheel Axle Bearing

Trailing Wheel Boom - Long Version
Trailing Wheel Boom – Long Version

Today I focused on the Axle Bearing of the Trailing Wheel. I’m currently wondering which would be the best length for its boom. Right now, I’ve got the choice between two versions: the originally drawn, long version and a new one, which is considerably shorter.

Cylinders Redesign

Hello folks,

today I looked on the last picture I posted and compared it to the prototype’s photography. I have to say I’m positively unhappy with the cylinders’ current dimensions. From my point of view they should be scaled down by at least 10%. This would still meet the required cylinder stroke and give the machine an overall better proportion.
Furthermore, I took a closer look at the trunnion (what little could be seen on the photo) and it seems to me that the trunnion’s diameter matches the cylinder’s diameter. So I will give it another shot and redesign the cylinders.

Pictures will follow as soon as I’ve got anything to show.