My Model Engines

[Roger B]

A few pictures of my engines:

The 25cc horizontal engine I started building in school. It will run.

A 3cc vertical four stroke.

An upgraded version of the original 25cc engine

A metric version of Huff and Puff.

A 20cc two stroke diesel. This ran but not to my satisfaction for various reasons.

So it was converted to the current four stroke version.

 

[Roger B]

Part 2

A 12cc two cylinder four stroke. Initially with a 180° crankshaft and a constant depression (SU type) carb.

Then with a 360° crankshaft and fuel injection.

Finally some videos:

Original engine



3cc engine.



25cc engine with fuel injection and load tests



Four stroke diesel



Two cylinder engine with CD carb under load



Two cylinder engine with fuel injection

20210829 185753

 

[minh-thanh]

Hi Roger B !
You have a pretty interesting collection .

 

[stevehuckss396]

The collection has a real mechanical/steam punk feel to it. Some real cool stuff there.

 

[kuhncw]

Roger, you have nice collection of engines. I like the experimental/engine development lab look. My favorite is the twin cylinder vertical. Well done.

Chuck

 

[a41capt]

Very nice engines! What is the bore and stroke of your 25cc engine?

John W

 

[Roger B]

Thank you for your kind comments

The 25cc engine is 25mm bore and 50mm stroke.

 

[Steamchick]

An interesting collection of a lifetime of manufacturing and fun variants! Quite a change from some of the other posts of making models of old designs, etc. I enjoy the "experimental" a proactive you have taken.
Very well done Roger.
K2

 

[Roger B]

Thank you all for the comments. The first engine was started in the 70s and was slowly finished when I had access to machines tools. I then went in different directions, motor sport, narrow gauge and model railways, old buses etc. I started building engines again when we moved back to Switzerland in 2010. The design of the vertical engine was started on the back of air tickets, the crankshaft being limited by the offset I could get in the 4 jaw chuck on my mini lathe. The engines are all designed for me to learn and experiment rather than any aesthetics. I like to measure and calculate as much as possible so I can try and understand what is going on.

 

[Steamchick]

OK Roger, I am still impressed!
K2