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Author Topic: Small Turbine  (Read 9536 times)
eTraxx
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« on: September 21, 2013, 09:34:47 AM »

Work in progress .. still need to add control rods/handles



Pulleys and supports

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Ed Traxler

Lugoff, Camden & Northern RR

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Mr Potato Head
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« Reply #1 on: September 21, 2013, 10:43:19 AM »

Nice start! very cool subject
I assume that's a printed wheel?
keep going show us more
MPH
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Gil Flores
In exile in Boise Idaho
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« Reply #2 on: September 21, 2013, 01:28:25 PM »

More info please. Nice pics. -- Russ
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eTraxx
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« Reply #3 on: September 21, 2013, 01:57:05 PM »

Okie Dokie. I go into more detail on my website since .. well .. I use it as a virtual scratchpad in a way.

The turbine .. I walk through the thought process. I enjoy the research and number crunching and the 'figuring out' as much as the modeling.
Turbine

In short the turbine was constructed in Sketchup with the intent to add the bolt heads and rivets after and then use the thing as a master. In reality I need to make changes to do that so it ended up just as a one-off model.

Here's a rendering in Kerkythea. I did it in bronze simply that it renders nicely.


The printed bits and pieces .. literally. I was trying to get too 'cute' and made some of the walls just too thin. Hey .. it's a learning thing. I also made the holes for the rivets .015 in .. and the 'studs' on the Tichey rivets/bolts are .020 in. Ooops! I also forgot to add alignment tabs/pins .. the parts in the upper right were warped slightly and had to use masking tape to align. Still .. ok .. like I said .. learning.


Here's the thing before the paint. The body is some 1 in dia tubing I got from Plastruct. Note that this at the small end of turbines ... with the about 9 ft of head from my dam would have produced perhaps 24 hp. Fine for the purpose. When I do this again I will try and print the bolts and rivets instead.


The plaster bit below my thumb is the pulley support.  I go on (and on) about these under Pulley Support .. basically the support for the pedestals/bearings that the pulley shafts sit on.





In Flat Belt Pulley .. I go way to much into the math .. probably only some of the people on this forum would appreciate this kind of crazy .. Smiley

Here's the pulley as rendered in Sketchup


and as from Shapeways .. no cleaning of the wax yet.
« Last Edit: September 21, 2013, 01:59:50 PM by eTraxx » Logged

Ed Traxler

Lugoff, Camden & Northern RR

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Hi, I'm Kim.


« Reply #4 on: September 21, 2013, 03:30:37 PM »

hi
nice little turban,is there any chance of a photo of the feed pipe i have found that making a large radius industral pipe difficult.
kind regards kim
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eTraxx
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« Reply #5 on: September 21, 2013, 05:55:28 PM »

Kim,
Here's a photo of an outside mounted Turbine Wheel. The feed is the pipe that runs into the building. The tailpipe (exhaust) is to the right. Note that the feed pipe is about the same diameter as the body of the turbine. The little one I posted up is actually too small but at the time that was the only tubing I had on hand.

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Ed Traxler

Lugoff, Camden & Northern RR

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Ray Dunakin
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« Reply #6 on: September 21, 2013, 06:06:24 PM »

Really interesting subject for a model, and your's looks great!
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Visit my website to see pics of the rugged and rocky In-ko-pah Railroad!

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« Reply #7 on: September 21, 2013, 07:10:13 PM »

Thanks Ray. It is more of a .. umm .. test really. Next one will be better .. and bigger .. twice the size. This one would have been for a farm or small industrial area. With 9ft of head from my dam .. about 24 hp. I should have put the dam higher but .. shrug. A turbine twice the size with a 30ft head would put out several hundred HP. Fun stuff.
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Ed Traxler

Lugoff, Camden & Northern RR

Socrates: "I drank WHAT?"
finescalerr
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« Reply #8 on: September 22, 2013, 01:49:10 AM »

The results you get from SketchUp are very encouraging. Thanks for the additional info. Very nice work. -- Russ
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Gordon Ferguson
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« Reply #9 on: September 22, 2013, 06:23:27 AM »

Really nice job, just love these bits of old industrial equipment.

What you have achieved with this piece has convinced me I really have to try this CAD/Sketchup and 3 d printing
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Gordon
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« Reply #10 on: September 22, 2013, 08:06:12 AM »

Beautiful piece of modelling!
Very lovely!

Thanks for all the screenshots and info.
I like seeing you guys developing this 3D models.
It's a totally different new world for me, always amazed by what you can do.
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« Reply #11 on: September 22, 2013, 02:38:56 PM »

once again great work ed
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gary wise
Chuck Doan
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« Reply #12 on: September 22, 2013, 05:10:53 PM »

Very nice Ed! Always glad to see 3D printing projects.
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eTraxx
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« Reply #13 on: September 25, 2013, 01:22:47 PM »

Pulley support, pedestals and pulley




Next will come up with a belt. There was an article in RMC where someone used thin plastic .. think it was Tyvex to make a belt.
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Ed Traxler

Lugoff, Camden & Northern RR

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Choo choo!!


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« Reply #14 on: September 25, 2013, 02:19:08 PM »

Wow! great  Cool
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