Building a two-cylinder stirling,now at 1040RPM

[larsinist]

Hey

I have finaly started to build a 2 cylinder, i have had some time to build the cans and the support table.
This is how the lower set up looks like

Lars2sylinder.jpg (124.51 KiB) Viewed 12664 times

kjg.jpg (124.59 KiB) Viewed 12664 times

I did some painting today,and i will assembly it when all the parts are dry.i will measure everything with a laser,so it will be stright!!!

cylinders paint.jpg (116.4 KiB) Viewed 12664 times

i will take more pictures soon!!

[larsinist]

cylinders paint2.jpg (103.46 KiB) Viewed 12662 times

a close up on the cylinder, its 10.5 cm high!!

What you think so far?'

[larsinist]

i have now done finished the rod seal, its two of them,and the thight fit in the tin can

rod seal 2.jpg (118.09 KiB) Viewed 12637 times

here you see the bottom seal, its a brass bearing from an electric engine taken from a printer!!

rod seal.jpg (104.55 KiB) Viewed 12637 times

here is the complete seal, its a total of two, the other dispencer seal is a 2mm brass flange,i just cuted of the treads!!
i am gonna give it all a red color

[larsinist]

Here is the hole thing so far,you can also see the brass part that i made the dispencer seal with!

2sylinder progres1.jpg (132.49 KiB) Viewed 12637 times

2sylinder progres.jpg (134.28 KiB) Viewed 12637 times

hope i get some more work on it soon!

[larsinist]

The fly wheel will be in the middle, so thats why its is so wide!

[larsinist]

I am finished with half of the machine, it would go to 540-550 RPM with a candle..so this can be fun

here is a video of it!
[video 425,350]https://www.youtube.com/watch?v=Bjd7Q8k ... e=youtu.be[/video]

[larsinist]

i got it running on two cylinders now, but my left cylinder is much weaker than the right cylinder,when i run them solo, my right cylinder goes to 750RPM with only one candle, and my left wont even start on one candle.
so i think the displacer could be destroyed,cause i i used one hour to make it start...

it has a lot of power when i run it at two cylinders,cant stopp the fly wheel shaft with my fingers....
i hope i can get some idea here about the problem..if not i will open the cylinder later today...

Regards:Lars

[larsinist]

it goes at 950RPM at max, but i have big adjustments problems....my left cylinder are giving me a hard time!!
[video 425,350]https://www.youtube.com/watch?v=1s7vCkIZy2I[/video]

[larsinist]

I think i will start build a 3 cylinder now, but first i will try to tune my 2 cylinder, so it goes right..what ya think about all my thoughts????

[vamoose]

Nice work!

I really like the recoiled conrod. Good for easy adjust-ability, and would also spring load the power piston stroke and allow it to react more dynamically between the sinusoidal crank rotation and the relative down and up force pressures per cycle stroke. I wonder if the engine would run faster or slower with a solid/direct shaft for the conrod
(my guess is slower)

vamoose

[larsinist]

Thank you vamoose!!!
you ask about the con rod--it myst be the displacer rod??...i think it will go faster with a straight rod, cause it lighter."just my thoughts"
Are you saying that i should use a spring in them rods, so they will get bumped up again??? like a pen spring

Anyway thanks for reply.
Regards:Lars

[larsinist]

Got 999,9 RPM now
[video 425,350]http://www.magisto.com/video/IlQMPFwVBT89URNiCzE[/video]
http://www.magisto.com/video/IlQMPFwVBT89URNiCzE

[larsinist]

i have rebuild the cylinders, and its running like hell now, in one cylinder, i will make the other one soon!!
Hope you like this then!!
[video 425,350]https://www.youtube.com/watch?v=8lTIPzT ... e=youtu.be[/video]

[Ian S C]

Good on you, the speed increase is quite predictable, don't be too surprised if it nears 2000rpm.Ian S C

[larsinist]

Thank you ian...i will try to build the machine finished fast!!,but i have a shortage of time atm!