Motorcycles, tools, and garages! A little bit of everything mechanical and technical.

Thursday, February 12, 2015

dorkpunch Engines #1. (re) Learning how to machine.

So I stumbled across this video a while ago.

I've been wanting to try my hand at making some type of miniature model engine for a long time now. I have seen dozens of these cool videos- in fact, here are two more.

I've built a couple of really simple air engines, and even use the one as a project for my Grade 8 students to build.  Here was my first attempt ever at building an engine. This was my test bed for the above engine- basically copied but simplified from one I found on Instructables.

I adapted that one to this one- VERY simple to make and pretty easy to get running decently. ZERO machining- all done on a drill press or with hand tools. Little bit of welding but it could be done without it if you had different chunks of metal.

From this:

To this:

Back to the topic at hand.  I've got my own idea I've been kicking around for a while- flathead with an atmospheric intake valve, 1" bore and I'm thinking either 1.25 or 1.5" stroke. Not sure how I'm going to do the governor but I've got a few ideas. No idea how well it will work, if it ever even DOES. I don't have a real great track record at finishing projects...

Been working on dumping the ideas swirling around in my head out onto paper and the computer.

Here's the general idea.

Currently thinking flathead, with atmospheric intake valve. Main design constraints are the limiting factors of the tools I have, so the goal is to make it as simple as possible and entirely built on the tools I have access to- a Smith 1250xl (?) lathe / mill combo. Been playing around a bit and have made some shavings, will get more pics posted. 

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