Works okay, but still needs some tweaking. Will run fairly slow but if I try and crank up the speed, it seems to be fighting itself and won't rev way out like the single cylinder version does.
Fun to play with, anyways!
Motorcycles, metal working, sheet metal, welding, TIG, MIG, education, cafe racers, old trucks, mendelmax 2.0 3D printer, vintage, technology and design, custom hand made Hot Wheels, old John Deere, stationary, hit and miss engines. A little bit of everything in the garage.
Showing posts with label air engine. Show all posts
Showing posts with label air engine. Show all posts
Saturday, October 24, 2015
dorkpunch Engines- 2 cylinder Wobbler.
If you go back aways, you'll see the wobbler air engine I have my 8th grade students build in Metals 2. Well, I've been working on another version of it. Pretty simple really- just welded another valve plate on the opposite side, added another cylinder and piston, and cut the pistons so they can share the same crank pin.
Works okay, but still needs some tweaking. Will run fairly slow but if I try and crank up the speed, it seems to be fighting itself and won't rev way out like the single cylinder version does.
Fun to play with, anyways!
Works okay, but still needs some tweaking. Will run fairly slow but if I try and crank up the speed, it seems to be fighting itself and won't rev way out like the single cylinder version does.
Fun to play with, anyways!
Monday, April 06, 2015
Lego Engines!
Try this on for size! This was built by one of my 7th grade students. It's powered by a Lego Mindstorms NXT and actually runs pretty darn smoothley!
Square piston and crankshaft.
Interesting spoked flywheel and the "electric start".
Intake / exhaust port at the bottom of the cylinder.
Video of it in action!
He said he just kinda started putting stuff together and this is what came out of it. Very impressive!
Now, I could have sworn I posted this one somewhere but can't seem to find it... So here it is (again?).
This was built by one of my 8th grade students that was also building my wobbler air engine. Same story- he was playing with legos and this sort of emerged from the chaos. This one even RUNS on compressed air. It takes a LOT of it though- lots of leaks through all the gaps.
Kind of hard to see but if you look to the right of the little square lego piece you can see the air intake port.
And of course a video of it in action!
Square piston and crankshaft.
Interesting spoked flywheel and the "electric start".
Intake / exhaust port at the bottom of the cylinder.
Video of it in action!
He said he just kinda started putting stuff together and this is what came out of it. Very impressive!
Now, I could have sworn I posted this one somewhere but can't seem to find it... So here it is (again?).
This was built by one of my 8th grade students that was also building my wobbler air engine. Same story- he was playing with legos and this sort of emerged from the chaos. This one even RUNS on compressed air. It takes a LOT of it though- lots of leaks through all the gaps.
Kind of hard to see but if you look to the right of the little square lego piece you can see the air intake port.
And of course a video of it in action!
Thursday, March 19, 2015
Penny Engine! So small you can power it with your BREATH.
A couple of weeks ago I had kind of a wild hair and came up with this little guy. Flywheel is made out of a penny, and it will run on air from your breath!
It started out as this pile of leftover parts from past Hot Wheels builds.
All of that got turned into these bits.
Gotta have some semi-unique tools to do all that though. The jewelers saw and pin vice / jewelers drill are lotsa fun to play with.
Getting the rotating assembly put together.
Piston, cylinder, and associated bits.
This type of engine is commonly called a "Wobbler" or an Oscillating Steam Engine, because the entire cylinder wobbles back and forth. As it does, one of these holes lines up with the hole in the cylinder, letting pressure in to push the piston down. On the way back up, the other hole lines up and lets the pressure out.
And of course, some videos of it running. First one shows me powering it with my lungs and then a longer run with the air compressor. Second vid was the second time I had ever gotten it to run, using the air compressor on that one.
This was a lot of fun to make. It was even more fun to watch the band teacher, who you would think has lung capacity to spare, turn red, then purple, then white trying to get it to go!
Also wrote an instructable on this one and entered it into a couple of contests over there. Check it out here: http://www.instructables.com/id/Penny-Engine-micro-air-powered-engine/
It started out as this pile of leftover parts from past Hot Wheels builds.
All of that got turned into these bits.
Gotta have some semi-unique tools to do all that though. The jewelers saw and pin vice / jewelers drill are lotsa fun to play with.
Getting the rotating assembly put together.
Piston, cylinder, and associated bits.
This type of engine is commonly called a "Wobbler" or an Oscillating Steam Engine, because the entire cylinder wobbles back and forth. As it does, one of these holes lines up with the hole in the cylinder, letting pressure in to push the piston down. On the way back up, the other hole lines up and lets the pressure out.
And of course, some videos of it running. First one shows me powering it with my lungs and then a longer run with the air compressor. Second vid was the second time I had ever gotten it to run, using the air compressor on that one.
This was a lot of fun to make. It was even more fun to watch the band teacher, who you would think has lung capacity to spare, turn red, then purple, then white trying to get it to go!
Also wrote an instructable on this one and entered it into a couple of contests over there. Check it out here: http://www.instructables.com/id/Penny-Engine-micro-air-powered-engine/
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.
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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