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Author Topic: Coke Bottle Steam Engine  (Read 40132 times)

Offline Bernd

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Re: Coke Bottle Steam Engine
« Reply #25 on: January 22, 2009, 04:42:18 PM »
Ok, back on track with the Coke Bottle engine.

What I'm doing here is roughing out the parts. Meaning I'm going to skim cut to clean up as much as I can without going right to size. That will be done later as the parts are put together for a trial fit.

The first pic shows how I chucked up the rough casting for the part known as the "inside head" this part mounts between the frame and the cylinder assembly. I used two 1/4" HSS tool bits as parallels and the tailstock to push against the part to ensure I was as close to square as possible. After the chuck was tightened the two pieces of HSS tool stock was removed. Why? Saftey reasons. You don't want them flying out while maching and hit you in the face. That would ruin your day of fun machining.


Then I just cleaned up the diameter and shoulder. No set dimension here. Just enough to get to a nice clean surface. This will allow me to turn the part and insure it will be square for the next operation.


The part has been turned and chucked on the surface I just turned. Now I'm going to face and turn the OD of the part. Again to just clean the surface.


And there is the rough turned part. All the diameters and shoulders are now square to each other making the machining to finish size easier and more accurate.


Next I've decided to do the other cylinder cover.

Pics to come soon.

Bernd
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Offline old-biker-uk

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Re: Coke Bottle Steam Engine
« Reply #26 on: January 22, 2009, 06:17:24 PM »
Came across this while looking for something else & thought it might be of interest to bottle engine builders.

I also have (somewhere in the workshop) drawings I made from a full size engine that resided in the museum where I used to work, will see if I can find them - might even encourage me to start the model I made them for x years ago.
Mark
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Offline rleete

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Re: Coke Bottle Steam Engine
« Reply #27 on: January 22, 2009, 06:40:02 PM »
Bernd, how did you find the casting for machinability?  I've heard about the hard surface sometimes encountered on the surface of castings, but these appear to have cleaned up nicely.  How would you compare skimming the casting to a piece of brass?
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Offline Bernd

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Re: Coke Bottle Steam Engine
« Reply #28 on: January 22, 2009, 07:51:39 PM »
Brass would be more preferable to this bronze.

I've noticed if I take a heavier cut it cuts better. If I skim just the surface it's harder. Also having sharp tooling helps a lot.

Hope that answers you questions?

Bernd
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Offline Bernd

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Re: Coke Bottle Steam Engine
« Reply #29 on: January 22, 2009, 07:54:52 PM »
Mark,

Nice wood cut print. I like the engine. It's got a govenor, and water pump on it, really neat. :thumbup:

Prints would be nice. Looks like a bit of a job though making prints.

Bernd
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Offline sbwhart

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Re: Coke Bottle Steam Engine
« Reply #30 on: January 23, 2009, 01:52:35 AM »
Ho what a good looking engine  :thumbup: this is the first time I've seen what a coke bottle engine looks like, come on Bernd you,ve just got to complete yours.

Cheers

Stew
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Offline Bernd

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Re: Coke Bottle Steam Engine
« Reply #31 on: January 23, 2009, 09:15:27 AM »
Quote from: sbwhart on January 23, 2009, 01:52:35 AM
Ho what a good looking engine  :thumbup: this is the first time I've seen what a coke bottle engine looks like, come on Bernd you,ve just got to complete yours.

Cheers

Stew

Thanks Stew.

It'll take a bit to get there. Have house projects that are ahead of the fun toy stuff, but will keep pecking away on the engine and document it here. :dremel:

Thanks for the  :poke: for I need that to keep the project going.  :D

And the rest of you don't go :poke: me or I'll be to sore to finish the project.  :D

                                           :mmr:

Bernd
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Offline SPiN Racing

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Re: Coke Bottle Steam Engine
« Reply #32 on: January 23, 2009, 02:27:10 PM »
Very cool...

Makes me want to get one... to add to my list of projects LOL
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Offline Bernd

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Re: Coke Bottle Steam Engine
« Reply #33 on: January 26, 2009, 07:11:20 PM »
I was digging in the dark places of my second disk drive and found some images I didn't even know I had. They are of the first machining I did on the coke bottle engine way back when. I know how much you guys like pics so here are 7 more pics. I think they are self explanatory so won't add any extra words. :)















Questions?

Bernd
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Offline sbwhart

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Re: Coke Bottle Steam Engine
« Reply #34 on: January 27, 2009, 03:18:36 AM »
Nice one Bernd

Looks like you got more done than we've given you credit for. But I'll still give you a  :poke: from time to time

Cheers
 :wave:

Stew
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Offline Bernd

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Re: Coke Bottle Steam Engine
« Reply #35 on: January 27, 2009, 01:15:32 PM »
Stew,

The cover and flywheels were done back in 2003. Six years ago. :bugeye: Just thought I'd add them to the build.

Bernd
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Offline sbwhart

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Re: Coke Bottle Steam Engine
« Reply #36 on: January 27, 2009, 01:45:51 PM »
Thats OK Bernd

There's no rush  :lol:

Cheers
 :ddb: :ddb:
 
:wave:


Stew
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