Home » Community » It arrived! » Micro Air Engine
Search Search  
Show: Today's Messages    Show Polls    Message Navigator
icon14.gif  Micro Air Engine [message #67893] Mon, 13 May 2013 15:22 UTC Go to next message
avatar Mechanical  is currently offline Mechanical
Messages: 18
Registered: January 2013
Go to my shop
Junior Member
Hi Folks,

After 4 or 5 prototypes Embarassed i've finally managed to create a functioning Micro Air Engine.

http://www.shapeways.com/model/1047671/micro-air-engine.html ?li=my-models

The engine itself is just over an inch long and less than an inch tall. It is all held together using 1mm diameter screws and requires two 1x3x1mm ball bearings at the crankshaft and one 1x3x1mm bearing at the connecting rod for stable rotation of the engine.

Now that i have the basics down i will soon be creating multiple cylinder engines as well as different configurations such as V4/V8 etc etc, as well as different types of engine/turbines.

I'm currently in the process of creating full assembly instructions for the engine on my website. although it is fairly straightforward to assemble i think this is a necessity for customer satisfaction & support.

Here's a video of the engine functioning which a friend made for me,i hope you guys like it Razz

http://www.youtube.com/watch?v=eujQ1Jwab2E

[Updated on: Thu, 16 May 2013 06:35 UTC]

Re: Micro Air Engine [message #67894 is a reply to message #67893 ] Mon, 13 May 2013 15:47 UTC Go to previous messageGo to next message
avatar lensman  is currently offline lensman
Messages: 1562
Registered: December 2009
Go to my shop
Shapie Expert
Very good. I wonder what sort of sustained pressure would be needed to generate enough speed for a (light) model plane's propellor...?


Glenn ------ My Website Third Dimension Jewellery
Re: Micro Air Engine [message #67897 is a reply to message #67894 ] Mon, 13 May 2013 16:01 UTC Go to previous messageGo to next message
avatar Mechanical  is currently offline Mechanical
Messages: 18
Registered: January 2013
Go to my shop
Junior Member
I've no idea to be honest, although i'd imagine a different type of engine would be better. This type of engine is powered on one stroke only - the flywheels momentum is used to rotate the engine the other 180 degrees, so a CO2 engine or peltier turbine would probably suit that application better - i'll be working on them soon Wink.
Re: Micro Air Engine [message #68012 is a reply to message #67897 ] Tue, 14 May 2013 21:17 UTC Go to previous messageGo to next message
avatar stop4stuff  is currently offline stop4stuff
Messages: 3111
Registered: June 2010
Go to my shop
Shapie Expert
PFTE/Silicone lube works wonders with LEGO Pneumatics (~60% friction lost), should work ok with FD/FUD too.

Awesome job!
Re: Micro Air Engine [message #68014 is a reply to message #67893 ] Tue, 14 May 2013 22:12 UTC Go to previous messageGo to next message
avatar bvr  is currently offline bvr
Messages: 107
Registered: November 2010
Go to my shop
Senior Member
Mechanical,
Nice motor nice job, I really like the clear look. Did you post process the parts?
I printed a wobbler a while ago, I made mine square...piston, con-rod, crank-flys, flywheel all done square.
I used no bearings, nylon on nylon for the crank(pressed crank)/crank bearing surface and transparent for the cylinder. I used slotted ports for maximum duration(almost no need for a flywheel). On 20psi on air it turns around 1000rpms. I have had it running for around 5 mins at a time and have yet to see any scoring or galling. I have a video if your interested.

thanks for the look
bvr


Buffalo, 360° @ a time
Re: Micro Air Engine [message #68040 is a reply to message #68012 ] Wed, 15 May 2013 08:21 UTC Go to previous messageGo to next message
avatar Mechanical  is currently offline Mechanical
Messages: 18
Registered: January 2013
Go to my shop
Junior Member
Thanks shopforstuff, i must check that out Smile.

Hi bvr,
I did have to do a little bit of post processing, the piston and cylinder have too much friction between them after production, i needed to just lap them a little bit with a fine grit compound.

Cool, send me/share the vid Smile
Re: Micro Air Engine [message #68052 is a reply to message #68040 ] Wed, 15 May 2013 13:19 UTC Go to previous messageGo to next message
avatar bvr  is currently offline bvr
Messages: 107
Registered: November 2010
Go to my shop
Senior Member
Mechanical,

Here's the video.

bvr

square wobbler


Buffalo, 360° @ a time
Re: Micro Air Engine [message #68054 is a reply to message #68052 ] Wed, 15 May 2013 13:28 UTC Go to previous messageGo to next message
avatar Mechanical  is currently offline Mechanical
Messages: 18
Registered: January 2013
Go to my shop
Junior Member
Hi bvr,

It won't load for me?
Re: Micro Air Engine [message #68077 is a reply to message #68054 ] Wed, 15 May 2013 16:08 UTC Go to previous messageGo to next message
avatar bvr  is currently offline bvr
Messages: 107
Registered: November 2010
Go to my shop
Senior Member
Mechanical,

Try right clicking on the video and choose "view video"

bvr


Buffalo, 360° @ a time
Re: Micro Air Engine [message #68104 is a reply to message #68077 ] Wed, 15 May 2013 21:25 UTC Go to previous messageGo to next message
avatar mkroeker  is currently offline mkroeker
Messages: 1770
Registered: June 2012
Go to all my models
Shapie Expert
Could be a URL problem - all I get is a 369 byte MOV file that appears to contain links to different versions
of your video for different bandwidth, but none of them gets opened automatically. If I grab one of the names
from the .mov (opened in a text editor) and prepend the URL where the sqwob.mov resides I can view it,
so perhaps the path info is missing in either the sqwob.mov or your webserver config ?
Re: Micro Air Engine [message #68177 is a reply to message #68104 ] Thu, 16 May 2013 21:58 UTC Go to previous message
avatar bvr  is currently offline bvr
Messages: 107
Registered: November 2010
Go to my shop
Senior Member
mkroeker,
That html file and assets are from "export for web" from quicktime It works on some machines/phones, I know with firefox, right clicking and choosing "view video" is the only way to view it. I really need to make a proper page for videos, but I don't do a lot of video.
bvr


Buffalo, 360° @ a time

 
   
Previous Topic:Building Toy Minifig Upgrade Parts (Customer Photos)
Next Topic:Chubby Unicorn

Logo

Hello.

We're sorry to inform you that we no longer support this browser and can't confirm that everything will work as expected. For the best Shapeways experience, please use one of the following browsers:

Click anywhere outside this window to continue.