Opps.
For some reason the video wasnt displayed on my last post.
Here is the video for those that missed it...
Read More..
For some reason the video wasnt displayed on my last post.
Here is the video for those that missed it...
Tampilkan postingan dengan label motion. Tampilkan semua postingan
Tampilkan postingan dengan label motion. Tampilkan semua postingan
Minggu, 26 Juni 2016
Kamis, 26 Mei 2016
Stirling engines Slow motion balloon power piston
I made a few adjustments to my little tin can Stirling engine. It now spins twice as fast, at a rate of around 210rpm. Not that that means much because the more flame you put under it the faster it goes. But its around twice as fast as it was originally. Quite a success as far as bettering a terribly inefficient Stirling engine goes.
If you ask me.
The main adjustment I made was to replace the two sections of shaft that make contact with the supports. The original shafts and bearing surfaces were made of galvanised fencing wire.
I replaced them with a thinner grade of stainless wire. Actually its welding wire, and is the same stuff I use whenever I mention stainless wire in the construction of my fishing lures or anything else on the blog.
Pictured here in this uncomfortably framed, but interestingly red image, is the new wire, the old wire, and a match.
The thin stainless wire makes a huge difference. It even runs without the 8g counter weight now.
The counter-weight is there to mirror the weight of the displacer, so without it, the power piston has to lift all that weight on its own.
With the counter-weight and a minimum sized flame, it can now tick along as slowly as only 32 rpm.
Stately.
To run as slowly as 32 rpm, I found it also needed a small drop of very light lubricant (fishing reel/sewing machine oil). But its important to note that the shaft for the displacer - the one that goes through the small hole in the can, should not be oiled. The oil burns, and leaves a sticky residue which will stop the engine. As seen by the improvement by the slight reduction in friction, the smallest extra friction will kill these little engines. Use graphite, or just leave it with nothing.
If you did lubricate the displacer shaft, its also possible that oil or Vaseline could get into the displacer container, and being flammable, might eventually find its way to igniting if everything was just right.
Everything is very rarely just right, and a Stirling engine is a very safe thing to make and use because there are no pressurised containers. The making involves some sharp bits of tin can, and should probably not be built by kids, but as a finished item, its as safe as any small candle is, so probably qualifies as relatively child friendly.
Lets say... As child friendly as a birthday cake.
Anyway, it looks like this in slow motion (sorry for the poor picture quality)...
[edit from the future - Opps, for some reason the video wasnt dropped into place.] Here it is...
Even more stately.
Its currently clunking away on my desk, running at around 60rpm on these two little flames, and has been doing so for an hour. One flame is about the size a birthday candle, and the other is around half the size of a birthday candle.
My point is it isnt using much heat compared to the last version.
I find its sounds...
oddly soothing.
K-chunk K-chunk
120 Things in 20 years thinks that if ever I disappear, it might be because Im off on a Stirling engined bike trip around Australia... in slow motion.
Read More..
If you ask me.
The main adjustment I made was to replace the two sections of shaft that make contact with the supports. The original shafts and bearing surfaces were made of galvanised fencing wire.
The thin stainless wire makes a huge difference. It even runs without the 8g counter weight now.
The counter-weight is there to mirror the weight of the displacer, so without it, the power piston has to lift all that weight on its own.
With the counter-weight and a minimum sized flame, it can now tick along as slowly as only 32 rpm.
Stately.
To run as slowly as 32 rpm, I found it also needed a small drop of very light lubricant (fishing reel/sewing machine oil). But its important to note that the shaft for the displacer - the one that goes through the small hole in the can, should not be oiled. The oil burns, and leaves a sticky residue which will stop the engine. As seen by the improvement by the slight reduction in friction, the smallest extra friction will kill these little engines. Use graphite, or just leave it with nothing.
If you did lubricate the displacer shaft, its also possible that oil or Vaseline could get into the displacer container, and being flammable, might eventually find its way to igniting if everything was just right.
Everything is very rarely just right, and a Stirling engine is a very safe thing to make and use because there are no pressurised containers. The making involves some sharp bits of tin can, and should probably not be built by kids, but as a finished item, its as safe as any small candle is, so probably qualifies as relatively child friendly.
Lets say... As child friendly as a birthday cake.
Anyway, it looks like this in slow motion (sorry for the poor picture quality)...
[edit from the future - Opps, for some reason the video wasnt dropped into place.] Here it is...
Even more stately.
My point is it isnt using much heat compared to the last version.
I find its sounds...
oddly soothing.
K-chunk K-chunk
120 Things in 20 years thinks that if ever I disappear, it might be because Im off on a Stirling engined bike trip around Australia... in slow motion.
Selasa, 10 Mei 2016
How to wear a shirt
Should I return the map??First Id like to announce that I pray for the day where I found out Im adopted...as my family is too stupid for me to be related to...
And my sister...beyond annoying. I mean damn...act your age, not my shortest friends shoe size (which is 6 I believe)
Anyway...was playing some Earthbound a while ago...great game.
So what brings me to the internet today is a little different. I have actually come here to try to figure out how to wear a shirt.
yep you read that right.
Its mostly because I have an interview with Macys...a clothing store...and dont want to look too stupid there.
So its the perfectionist coming out in me.
well its more like Im looking for what to wear. Do I wear something on the more casual me-ish side or do I completely dress to impress?
I have yet to tell my family cause they are soooo fucking annoying that Id rather be homeless than deal with them squealing like headless pigs about me needing to look perfect.
