The Home Machinist!

FLtenwheeler wrote: ↑

Sat May 04, 2019 10:59 am

3/8" Penberthy injectors are still available.

Tim

This I already know

Do you think you will be doing an injector bigger than the 1/4" size. Between larger locomotives, steam tractors, and other steam driving things I think there would be a decent market for a 3/8 and maybe 1/2".

If its a single phase motor you could be having the start switch sticking once in a while. The start windings draw a good bit of amperage that is NOT included in your motor nameplate ratings. It could also be a start winding beginning to fail. The high inrush and large magnetic fields can jiggle and...

My first guess would be that the expansion due to the heat from the steam is causing it to bind up somewhere. Was it technically made for steam or just a model of a steam turbine? Expanding steam can get a turbine spinning real fast, this being brass makes me wonder if it was ever intended to be pow...

This is the first I had heard of his passing. There was talk about some of his equipment being for sale of recent but no explanation of why. Lee Wright was a good friend of Marks and he built quite a bit of Marks equipment and helped on building his railroad. Hopefully someone will come along with m...

If you have a mill I would set up the piece and indicate it in and then center drill, repeat other end.
Or if you have a collet set up there is always using a square collet.

Is that all you have or does this come complete with the spacers, gears, shims, etc ?

I have always followed the rule that if you have a 5/16 injector, run 3/8 lines up to the injector. 1/4 injector go 5/16 lines. The larger the water supply lines the less effort it takes the injector to draw water in.

I would assume you are looking at the paper catalog? Going to their website and doing a search for copper tubing brings up their selection guide on the left side of your screen. 5/16 o.d. tube will be 8967K59 for straight non bendable, and 8955K241 and 8955K251 for bendable coils depending on which ...

4gsr wrote: ↑

Mon Feb 11, 2019 6:20 pm

Would that be like laying 96 GE44 HO engines put end to end and be the length of a real one?

nope

but if you put 87 end to end you would get real close to the prototype length

If HO was 1/96 scale then 1/8" to the foot would work, but HO is 1/87 scale or 1 ft equals .13793 of an inch. 2.5 inches divided by .13793 equals a multiplier of 18.125136

In HO one foot equals 87 feet or 1044 inches. In 2 1/2" scale one foot equals 2.5 inches.

If we take a 120" in HO scale that comes out to 1.379", the same 120" in 2.5" scale comes out to 25". That looks like from HO to 2.5" scale needs a multiplier of 18.129.