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#Post#: 1996--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: burnit0017 Date: March 29, 2014, 7:43 pm
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[img]
HTML http://gallery.anotherpower.com/main.php?g2_view=core.DownloadItem&g2_itemId=26793&g2_serialNumber=1&g2_GALLERYSID=a7df955ccfa316b2f99ff83caf6e4806[/img]
started new engine
#Post#: 2004--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: crazyguy Date: March 30, 2014, 1:33 pm
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You are determined. arent you. ;D
#Post#: 2046--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: burnit0017 Date: April 2, 2014, 3:32 am
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[img]
HTML http://gallery.anotherpower.com/main.php?g2_view=core.DownloadItem&g2_itemId=26832&g2_serialNumber=1&g2_GALLERYSID=63cd3adec199ca45eaa8260d399348aa[/img]
completed cam, needs improvement but better than first attempt
#Post#: 2047--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: crazyguy Date: April 2, 2014, 6:14 am
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So the scotch boxer is out?
#Post#: 2051--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: burnit0017 Date: April 2, 2014, 7:54 am
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Hi, think of it as a OPOC Scotch Boxer. ;D
The interesting part is twice the torque using the same volume
of steam.
#Post#: 2064--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: burnit0017 Date: April 2, 2014, 11:28 pm
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[img]
HTML http://gallery.anotherpower.com/main.php?g2_view=core.DownloadItem&g2_itemId=26849&g2_serialNumber=1&g2_GALLERYSID=63cd3adec199ca45eaa8260d399348aa[/img]
Hi, I spent the day remachining the crank shaft. I increased the
throws to 5/8. Still trying to reduce the run out error. It is
getting better but still needs improvement. Quality should
improve as I fabricate a few more.
#Post#: 2065--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: crazyguy Date: April 3, 2014, 6:52 am
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nice work.
by runout error do you mean 'concentricity "?
Is the whole crank out of balance.?
I would never be able to get that perfect. a machinist that good
im not.
Once you get it right a lost foam casting should be made so you
dont have to toil so much again.
#Post#: 2067--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: burnit0017 Date: April 3, 2014, 7:45 am
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Hi, the ends wobble. Normally it is turned from a solid piece of
stock but it requires a low RPM and my lathe does not turn that
slow. A person on another forum is using this fabrication method
and is able to produce results to 0.0009 runout. I have a way to
go before I can even get near to that kind of result.
I have to buy a reamer and fabricate a assembly jig, that should
help. It is good enough for the prototype. The next one should
be better. Proceeding to fabricate piston connecting rods then
try a test run. It should take a few days.
PS. stay off the ladder and enjoy your retirement :D Cheers
#Post#: 2126--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: crazyguy Date: April 6, 2014, 12:45 pm
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Okay I'm no machinist and I had to look up the term "run-out".
But if I was making the crank with my pitiful machining skills,
here's how I'd do it. I'm not saying it's right but this is what
my pea brain came up with.
1. I 'd make four circles of steel
2. then I'd glue em all together.
3. then I'd find the exact center of the top one
4. then I'd drill the center hole. through all disks at
once.[make sure the drill press was level.]
5. then I'd drill the holes near the edge for the crank rods,
all at once..
6. Then I'd get it apart somehow and put all the rods in the
holes
7. also I'd put a rod through the center of all circles
(disks). and put it in a lathe.
8. then I'd rotate the whole thing and make each circle
concentric with the next.
#Post#: 2127--------------------------------------------------
Re: Designing dual cylinder double action steam engine
By: burnit0017 Date: April 6, 2014, 2:54 pm
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[img]
HTML http://gallery.anotherpower.com/main.php?g2_view=core.DownloadItem&g2_itemId=26860&g2_serialNumber=2&g2_GALLERYSID=63cd3adec199ca45eaa8260d399348aa[/img]
[img]
HTML http://gallery.anotherpower.com/main.php?g2_view=core.DownloadItem&g2_itemId=26862&g2_serialNumber=2&g2_GALLERYSID=63cd3adec199ca45eaa8260d399348aa[/img]
[img]
HTML http://gallery.anotherpower.com/main.php?g2_view=core.DownloadItem&g2_itemId=26864&g2_serialNumber=2&g2_GALLERYSID=63cd3adec199ca45eaa8260d399348aa[/img]
Hi, thanks for the input. It basically the same method I am
using now. I not a machinist either ;D I think I have to aline
the tail stock to the center of the 3 jaw chuck for better
results. The runout is still about 0.002. Thanks again.
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