Elmer Verburg's Mine Engine

[rake60]

The engine that is the logo for this forum is a design by the late Elmer
Verburg. I'm a BIG fan of his simple but challenging models.
They can be made as plain or ornate as you like. But they all run with a little care.
The plans for the Mine Engine can be downloaded at:
http://www.john-tom.com/html/ElmersEngines.html

 

[gt2ride]

I have been working on the Mine Eng for a week. Having already made several eng. this one sure has some small parts. After you bored the cyl. did you lap it ?

 

[rake60]

Actually I didn't.
I did polish it with Scotchbrite to remove all feed line tool marks.
Then I made the piston to fit. I cut it for a stuff to stuff fit, then polished
it for an easy slide fit. It's a pretty forgiving design.

 

[gt2ride]

Rick On my other eng. I have been using a wood dowel split with a sandpaper in the slot. It cleans the cyl up but not being an machinest I do not konw what is right.

 

[rake60]

I don't beleive in the right or wrong way.
What works best for you is the best way!
You can use Scotch-Brite in the same way your using sandpaper.
It will make the surface a little smoother. You can get it at WalMart
for about $2 in the cleaning products.

Not exactly the industrial product.
That would be purple and cost twice as much. :wink:

 

[gt2ride]

Rick I have some scotch-brite from woodworking so I will give it a try

 

[gt2ride]

This is a pic of the ports in Elmers Mine eng.
A #57 drill bit is used on the three holes and the
slots are 1/16 wide and 3/16 long. I still have to cut off one
end and mill the center.

 

[gt2ride]

I am getting closer to having this one running

 

[rake60]

Looks fantastic!
I'm looking forward to you getting it running!
It's a great slow runner. I've had mine down to 60 RPM on 5 psi of air.
It just looks and sounds like a steam engine should.

You have to give us a video when you get it breathing!!!

 

[Tin Falcon]

The mine engine is one I have in my works in progress collection.
as for scotch brite I buy the gray stuff by the box when on sale at enco.
Tin