Working Oscillating Steam Engine MKI
Description
I started first building a horizontal double action steam engine (you can see it in the background of the video link below,) but while working out some bugs on that one, I decided to knock this one out quickly and post it first.
You can see a video of it in action here youtube.com/watch?v=BIfqFAG5olU&feature=share
I will call this engine the Mark I, just in case I build an enhanced model down the line.
Instructions
If anything is unclear, please feel free to post a comment or message me, and I will answer your questions.
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I tried sending the stl file for the upper frame to the program for solidoodle printer and it printed all the way unitl about half way up the first hole, it then skipped about 1/4" and tried to start printing and it was just falling but wasnt working properly. is there a fix for this. Thanks Ryan
I am wondering if it would be worth making a couple of pistons and combining them. (would need to make some crank with different positions of the pin. )
Sir, you might have mentioned this but I didn't see it. When do you plan on posting the other motor that's in the video?
Printed on my Replicator, it took a little (and I mean a little) bit of sanding to get the piston to slide and the axles/pivots to turn easily, but it all went together so beautifully, I'm so impressed.
Nice work, cbabbage.
I created an STL with all the parts on one plate so it can be printed in one go, if anyone wants a copy, email me at pintokitkat at gmail dot com.
:-D
Here is my version 8-)
https://fbcdn-sphotos-a.akamai...
http://www.youtube.com/watch?v...
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amp;feature=youtu.be
I printed it on my replicator with 30% infill .15mm layers and 2 shells on piston and cylinder. I have scaled the piston up to 1.035 and the crank bushing to 1.05.
All parts are glued together with hotglue.
8-)
Great piece!
I am struggling to get the piston to match the cylinder.
In the STL's the piston diameter (10mm) is exactly 1 mm smaller than the diameter of the cylinder opening (11mm). The same is true for the frame bushings (OD 20.7mm) and the frame opening (ID 21.3 mm).
I needed to scale the piston up 11%
to get a reasonable fit but that makes it 11% longer and therefore unusable.
Have anyone else encountered the same issues on the build?
Fix your filament diameter. You're laying down too much plastic so make your filament diameter thinner.
There should be no need to resize the parts. I recommend against it. 1mm of clearance is a huge amount of slop for parts that need to move freely against one another. That said, depending on your plastic and printer, the amount of clean up will vary. If there is a clearance issue, I recommend to look at the flashing created by building on a heated platform. Also, you can take a wood dowel with sandpaper on it to help clean out any printing imperfections inside the cylinder. Also, printing imperfections on the piston can be cleaned up by chucking it up in a drill and lightly sand while spinning. I would like to mention that I did not have to do anything other than sand off the HBP flashing. Everything was straight off my TOM with little or no sanding. I feel the tolerances are pretty ample. When printed on my Replicator at work, everything is a bit loose.
What software did you use? Source files would be nice regardless. Thanks!
You sir have done well with providing such a nice instruction sheet. I wish others even provided simple directions to complete the build, let alone make some awesome .pdf.
Thank you. I can't wait to build this
Has anyone printed this on a Cupcake?
Congratulations to print your piece, if I can blow a permit in bronze and experiment driven by steam.
sorry for bad english.
This wil be fun to print on a z406 powder printer. Should be lovely.
Seems really awesome, but how can I build this (Read: Assembly directions, please?) without already knowing how? Thanks ;)
Upper frame has self intersecting facets... and doesnt print correctly.
Any idea how you will solve friction issues? There's bond to be some tiny ball bearings available somewhere that you can design around. Plastic rubbing on plastic is quite funny, but not particularly useful.
Amazing! My son will go crazy when we print and assemble this. Thanks a bunch for sharing!
How do you attach the CO_2 bottle, and what type is it?
In the video I was using an 20 lbs. industrial Co2 bottle with a regulator on it. I would recommend just using a regular air compressor regulated down to about 15 or 20 PSI max.
You can also use one of those compressed air duster cans for blowing off your keyboard. I was able to get it to run with one of those. I just used a small piece of 1/4 inch ID vinyl tubing to connect the air can to the hose barb on the engine.
Nice! :)
Could this really run under steam? Wouldn't the steam temperature (~100 C) and friction undo it?
What's the recommended print settings for this? (Infill/Shells etc.)
License
I can see casting this from the printed parts in aluminum, attaching some magnets to the flywheel and hooking up a three phase generator. Hmm, I'm sure I saw a generator for a wind turbine somewhere else on here that could be re-purposed.