O Scale Visible Gas Pump

Gilbert and Barker T-176

I found this 10-gallon Visible Gas Pump with some basic dimensions. I simplified these dimensions, rounding off. This gave me a starting point since I am not focused on an exact copy but something close. Think of a company copying a comptitor.

With a drawing such as this I can simply import it into Skechup where I can then trace the drawing which can be scaled to match the dimensions as shown.

Body – working

Working. The body of the pump mostly done. There is a lever on one side .. think it is to operate a pump. Not even going to try and print that. What I will most likely do is make the lever from copper wire and simply model the bits where it attaches.

The walls vary from about .76mm-1mm (I forgot to do this before spinning the body and added the open area {to create the walls) as an afterthought. Not a concern .. .7mm is ok and I added the internal braces in any case.

Openings in the center are for wire to the LED in the globe.

The top of the pump body may be modified though – have an idea for the indicator markers which might require that modification.

Indicator marker – Working

While it may be possible to create a scale copy of the indicator marker that sits in the gas pump bowl it would of necessity be ‘clunky’. The problem for me is that if I can put an LED into the globe I need to run the wires up through the bowl. .

Creating an indicator marker as shown with a hollow to run the wire may work .. or may not. The idea is to merge the hollow indicator marker into the bowl which would create a bowl with a hollow bowl with the hollow the shell of the indicator. I then may be able to paint this hollow ssi it would appear to be mounted inside the globe and allow a wire to pass through unseen.Will this work? Have no idea really . but worth an attempt at the least.

The resis is not really clear but .. call it .. translucent. My original design had thin walls so the bowl was much like the original .. a tube. This design may simply be too much resin to represent glass
The opening is small measuring only 1.424mm/0.056″. I certainly can’t get a brush in there. A tooth pick used to put drops of paint (silver) followed by running a thread through to distribute the pigment .. perhaps ..
Such a small hole needs to be when dry, open enough for wire leads

Globe and Frame – Working

The globe is also made to print in clear resin being hollow. The opening at the bottom is 1mm in dia. A 603 SMD LED is only about .8mm wide.

Whether a single small 603 SMD LED would provide enough light or perhaps it will only light one side. Donno. Worth experimenting to if nothing else provide a basis for future design work.

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