View Full Version : More of Elmer's engines

04-22-2007, 06:03 PM
This is a four piston engine with only two cylinders. One piston in each cylinder drives the crankshaft directly. The other piston is cross-linked to the crankshaft on the opposite side.
Steam is admitted via an oscillating valve on the top of the cylinder block. The steam pushes the two pistons apart, thus driving the crank. The ends of the cylinders are not sealed since the two pistons act as moving seals.


This is a compact single cylinder marine engine that features a rotary reversing gear. I made it before I learned to bend small diameter tubing, hence the over-the-top brass piping.


04-22-2007, 06:18 PM
Cool, very Cool.

Tin Falcon
04-22-2007, 07:01 PM
Nice work as usual.Have you considered joining the Florida Association of model Engineeers @ www.floridaame.org ? No you do not need to live in Florida and there are no dues. They have a nice gallery set up. You already have a great collection fo photos and desriptions written. It would be just a matter of e-mailing sumissions to the moderator. You have plenty for the collection gallery. Also you mentioned posting to your Clubs web site what is the URL so we all can have a looksie?

04-22-2007, 07:20 PM
No need to join a club in Florida. Our club webpage has a Gallery section.

Our group is called the Southern California Home Shop Machinists (SCHSM) and we meet in the El Camino Community College machine shop in Torrance, California.

The website URL is:


Anyone in the area* is welcome to join us at a meeting (first Saturday of the month at 1400) to find out what we're all about.

*Since we're the only HSM (as opposed to model railroading) club in SoCal, "area" means Los Angeles County and any of the counties contiguous to it - probably an area the size of Connecticut.

04-22-2007, 07:32 PM
That Open Column with Reverse will defiantly be on my things to do list!