Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Builds, Repairs, Show Your Machines! => Restorations => Topic started by: DJoksch on April 06, 2022, 04:01:37 pm

Title: Re: Another steam engine shaped object
Post by: DJoksch on July 02, 2022, 10:30:20 am

The rear piston was hitting the cylinder cover in the previous post.  I also made a second set of pipes so it can be run as a compound engine so my boiler can keep up. 


https://youtu.be/2t5veA2to3I

Title: Re: Another steam engine shaped object
Post by: DJoksch on June 25, 2022, 01:01:09 pm

Here it is the first time seeing live steam.  It probably needs a boiler injection pump and a water preheater. 

https://youtu.be/XqVVkFPZ41g

Title: Re: Another steam engine shaped object
Post by: Jim on June 24, 2022, 06:51:52 pm

Its come up very nicely.

Title: Re: Another steam engine shaped object
Post by: DJoksch on June 24, 2022, 03:35:19 pm

Engine test on compressed air. Two 1.2” cylinders and a 2” stroke puts out some serious torque. Ready for first run on steam. 

https://youtu.be/-jFED2x22jA

Title: Re: Another steam engine shaped object
Post by: DJoksch on June 20, 2022, 09:09:30 am

Shimming and adjusting the first stage.   I have an eBay governor I bought some time ago I thought would look nice.

https://youtu.be/py8CVwBIWlQ

Title: Re: Another steam engine shaped object
Post by: DJoksch on May 29, 2022, 03:03:55 pm

Finishing the walnut base.  Decided on a planked floor.  I’ll clad the cylinders while I varnish the base.  I can’t deicide if I should stain it or just used a tinted varnish. 

Title: Re: Another steam engine shaped object
Post by: DJoksch on May 26, 2022, 08:08:54 pm

Slowly progressing. 

Title: Re: Another steam engine shaped object
Post by: txlabman on May 16, 2022, 09:10:36 am

An unusual configuration.

Nice work on getting it running.

Title: Re: Another steam engine shaped object
Post by: DJoksch on May 15, 2022, 02:35:36 pm

Made a new eccentric and slide valve parts.  I marked off the steam ports and getting ready to cut.

Title: Re: Another steam engine shaped object
Post by: DJoksch on April 18, 2022, 09:36:04 am

Building the steam chests.

Title: Re: Another steam engine shaped object
Post by: DJoksch on April 10, 2022, 12:02:52 am

The cylinders are now sized for a 2” throw along with the 1.2” bore.  The crank is now parallel with the cylinders. My plan is to move the steam chest to top of the cylinders as in the previous build.

https://youtube.com/shorts/jFvFoAVDhdM

Title: Another steam engine shaped object
Post by: DJoksch on April 06, 2022, 04:01:37 pm

I was given another strange looking homemade steam engine contraption as a birthday present.  I’m pretty sure I saw this one on eBay recently.  It looks like the second cylinder was ported to be a compound cylinder then plugged and incompletely reworked to be an air pump.  The stroke is approximately  1.2”, the cylinders are roughly 1.25” with 2.2 inches of stroke ability. 

The engine was make runnable after some quick modifications to the working valve cylinder.  My plan is to run it on steam so I started by building a 2” throw crank to use the entire cylinder and it ran fine on air.  I am calculating the bore for a primary cylinder and will sleeve to fit.  The valve cylinder was poorly made, too small, binds and will need to be replaced.  Also need to address bearings. 

https://youtu.be/wHIZldR3id8