1936 Midget magazine plan engine

[Aerostar55]

This engine is a, single cylinder, air cooled four stroke. It was a two part article featured in Popular Mechanics magazine in 1936 by E.C. Wittick. "Midget Gas Engine" Part 1 was making the wood patterns for the aluminum crank case and the cast Iron cylinder and flywheel.
Part 2 was "machining the castings" In the article there are pictures of the engine in a model boat.
The bore is 1-1/4". The hardest part of this engine is getting the valves to seat properly in the head, and then machining the cam shaft. All of the parts were sand cast in my backyard in a very small propane fueled furnace. The machining was done on a South Bend 9" lathe.

 

[mfrick]

Hello so I really like this engine design and would love to build one. Are there plans available of the midget gas engine
Mike

 

[Jasonb]

Have a look at the build thread I did of a scaled down one, pdfs were posted by another member
http://www.modelenginemaker.com/index.php/topic,9349.0.html

 

[the engineer]

i have one of those which i have gone half old school and half modern using a honda cylinder from a ohv brush cutter modified and mounted on the crankcase
but have kept the original parts also
will post photo tomorrow runs nice as original and just as nice modified but better oil controll with the honda top end and also enclosed the cam gears in a nice gearcase

 

[the engineer]

brilliant job aerostar

 

[olympic]

Like your pictures, Aerostar. They seem to show that two heads are better than one....

 

[the engineer]

these are the photos of the old and new midget had a great time building this nice to see more around

 

[Aerostar55]

Hello so I really like this engine design and would love to build one. Are there plans available of the midget gas engine
Mike

Yes, Look for the 1936 issue of Popular Mechanics magazine, all the issues are posted online. The first part is in the October issue and the machining part is in the November issue.

 

[minh-thanh]

This engine is a, single cylinder, air cooled four stroke. It was a two part article featured in Popular Mechanics magazine in 1936 by E.C. Wittick. "Midget Gas Engine" Part 1 was making the wood patterns for the aluminum crank case and the cast Iron cylinder and flywheel.
Part 2 was "machining the castings" In the article there are pictures of the engine in a model boat.
The bore is 1-1/4". The hardest part of this engine is getting the valves to seat properly in the head, and then machining the cam shaft. All of the parts were sand cast in my backyard in a very small propane fueled furnace. The machining was done on a South Bend 9" lathe.

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A nice engine !

 

[GreenTwin]

Nice casting work !

.

 

[ruben]

Can you send me the plans for the engine

 

[jirvin_4505]

Can you send me the plans for the engine

I downloaded from the archive popular mechanics 1936 as listed above
Search this forum for 1936 midget and a few other links to archives with the magazine

I’m stalled on my midget build
Cheers jeff

 

[Gedeon Spilett]

I downloaded and assembled some years ago these papers, great articles, lots of details for the built and the casting too...but too large for my tooling!
http://ti1ca.com/wdhb6f7u-Midget-Gas-Engine-Pop-Mech-1936-Midget-Gas-Engine-Pop-Mech-1936.pdf.html

 

[Jasonb]

but too large for my tooling

Make a smaller one like I did 24mm bor eis about 2/3rds the size