Elmer’s “Scotty” # 8

[Blacksheep]

New year new project.
I started to build the Elmer’s Verburg #8 scotty.
It’s very similar to the other two engines that I’ve built but this time I will approach the project in a different way due to some little issues I had in the other projects.
This time I started from the wooden display because it’s harder for me to carve a precise sized circle in wood than machine a metal round base that fit well in place.

Once the wooden display was done I let my bandsaw cutting the base disk while I squared the frame.

Then I machined the base on the lathe.

It fits good in his place.
Even if that’s not critical it’s more beautiful without gap between the circle carved in the wood and the metal base.

That’s all for today.

 

[Blacksheep]

Today I worked on the frame to get the final shape and squared the cylinder.

I machined the brass bolts to adapt them to the shape I need.
Here you can see the difference.

I don’t have an edge finder and in the previous project I got the right spacing between the holes but they were displaced by a couple of tenths to the bottom so I decided to hold the frame and the cylinder coupled in the vise.
Doing that way I drilled the four holes exactly in the right position on all two parts.

I’ve also drilled and reamed the cylinder bore, next I will lap it and will chamfer the edges.

 

[Blacksheep]

I went back to the workshop today and I made some steps forward: once finished the frame and the cylinder I made the flywheel and the crankshaft from a bar stock of Ss.

 

[ZebDog]

nice steady progress here keep up the good work

 

[Blacksheep]

The build continues slowly but costantly.
I made a couple of new little pieces.
Since I had little time to spend in the workshop I decided to machine the simplest parts like the piston rod, the bracket and the tiny slide block.
I prepared also the blank piece of brass for the piston and I’ ve already lapped the cylinder.
Just 4 parts to go.

 

[Johan Maritz]

Lovely little engine, here is mine. About my second engine built at the time. Enjoy it, i'm busy now with no 29 for a long time, quite a challenge.

 

[Blacksheep]

Wow Joahn, it looks really good, thanks for sharing.
Nice polishing work!

Mine it’s almost finished, I have just to machine the yoke.

Here some pics of the piston and bushing being machined.

 

[Blacksheep]

After a few days of stop today I went back to work on the scotty and I finished all the parts of the engine.

I connected it to the compressed air line and it runs.
Now it’s time to make a little polishing work and prepare it for the camera.

 

[Blacksheep]

Here it is!

It runs, Here is the video but I’ m not entusiasthic.
It doesn’t runs smoothly, there’s a little vibration at some point.
I think it’s caused by the crankshaft wobbling, when I press fitted the two pieces something went wrong and I ruined it.

Anyway it runs and I won’t work on it anymore but even if it’s been a fail I learned something from this project: If there’s not enough time to make a good part it’s better not to do it.

 

[minh-thanh]

An interesting engine , Thanks for sharing !

 

[Greg]

Very cool, thanks for sharing!

 

[Blacksheep]

Thank you for the support and for the replies, and again thanks to all the people who whatched this build.

 

[deverett]

Good job on your latest project.
Now you can have a go at a twin cylinder version!
http://homemetalshopclub.org/projects/scotchx2/scotchx2.htmlDrawings and instructions provided in the link.

Dave
The Emerald Isle

 

[Blacksheep]

Thank you Dave, believe it or not, I already downloaded that plan a couple of days ago after watching the you tube video.
It’s really interesting but for the next project I’m uncertain between this twin cylinder and a beam engine.

 

[Blacksheep]

All my Elmer’s engines in a row.

 

[ZebDog]

Another runner well done thanks for sharing
Your getting a nice little collection of engines