Author Topic: PMR 7 Twin Cylinder Steam Engine  (Read 32049 times)

Offline zeeprogrammer

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #120 on: April 18, 2018, 06:32:00 PM »
Thanks Bill.

Been waiting to say this back to you for a while,  how do you get so much done? Do you ever sleep?!

I hate to burst your bubble (no I don't) but you don't have a monopoly on shop elves.

And I have better cookies.

Taken a count of your elves lately?  ;D
I see a new face here every few days. I wondered where they came from and why but when I ask...they just look at the floor sheepishly and mumble something about crap cookies.

If that results in a cookie war...so be it...it can only result in better cookies for everyone.
(But it sounds like...from the elves...you have a ways to go before I need to worry about improving mine  :lolb: )

Hm....I see a cartoon reference coming up.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline crueby

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #121 on: April 18, 2018, 07:01:37 PM »
Thanks Bill.

Been waiting to say this back to you for a while,  how do you get so much done? Do you ever sleep?!

I hate to burst your bubble (no I don't) but you don't have a monopoly on shop elves.

And I have better cookies.

Taken a count of your elves lately?  ;D
I see a new face here every few days. I wondered where they came from and why but when I ask...they just look at the floor sheepishly and mumble something about crap cookies.

If that results in a cookie war...so be it...it can only result in better cookies for everyone.
(But it sounds like...from the elves...you have a ways to go before I need to worry about improving mine  :lolb: )

Hm....I see a cartoron reference coming up.
Like a certain coyote catapulting an anvil?    :Lol:


Have you counted your tools this afternoon?  That was Shop Elf Moving Company infiltrating yor shop to recce the place before stripping it bare!   :LittleDevil:


This ought to be Really confusing to newcomers here...   :ROFL:

Offline Tennessee Whiskey

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #122 on: April 18, 2018, 07:18:44 PM »
Nice family shot Zee  :ThumbsUp: :ThumbsUp:

Cletus

Offline Jo

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #123 on: April 18, 2018, 07:23:37 PM »
This ought to be Really confusing to newcomers here...   :ROFL:

Just wait till we get onto discussions of Tutu's, working on sports cars in bikinis or what might happen if someone comes visiting with chocolates, bottles of red wine and sets of castings  :mischief:

Zee: Its looking good but I think your set of castings would look better with studs and their appropriate nuts on show :embarassed:

Jo
Enjoyment is more important than achievement.

Offline zeeprogrammer

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #124 on: April 18, 2018, 07:51:59 PM »
Thanks Eric.

Jo...I won't say anything if you won't say anything.  :mischief:

For Chris...

<a href="https://www.youtube.com/watch?v=4XNr-BQgpd0" target="_blank">http://www.youtube.com/watch?v=4XNr-BQgpd0</a>

Worked on the cranks. Two more parts involving 'aw crap'.

The first pic was after facing and drilling/reaming for the crankshaft.
Then I went to the mill. I indicated off the crankshaft hole and then found, drilled, tapped the hole for the connecting rod.
1st 'aw crap'...I tend to squish my parts. There's a couple of dimples on the large face. I think they'll come out with some sanding.

The second pic shows the set up to drill/tap for the set screw to the crankshaft.
2nd 'aw crap'...as much as I checked and double checked measuring with an edge finder...the old zee-eyeball missed that the hole was slightly off to the side.
When I did the 2nd crank, I was more careful and realized what had happened. On the 1st crank, the top of the spinny part (which is thicker than the part you touch off of) was the bit that actually touched the part.

Overall though...so far so good. I haven't ruined a casting as far as I can tell. I hope I haven't jinxed myself.

Last pic shows the finished cranks with one on the crankshaft.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Online mklotz

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #125 on: April 18, 2018, 08:34:46 PM »
Good work so far.  It's nice to see that you jumped right in immediately after leaving the w**k place. 

I hate to admit that Jo is correct but those slot-head screws on the crossheads just look wrong.  Join the happy throng of studly machinists.
Regards, Marv
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Offline Jasonb

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #126 on: April 18, 2018, 08:39:34 PM »
I think that is one of the downsides to all the PMR engine kits as they all come with slotted screws. Fine for while you are building up the engine but better not to put them back after painting.


Offline crueby

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #127 on: April 18, 2018, 08:48:47 PM »
For Chris...

[youtube1]https://www.youtube.com/watch?v=4XNr-BQgpd0[/youtube1]

...


Bugs!!!!   My hero!

Now, where did I put that Illudium Q38 Space Modulator??

 :cheers:

Offline zeeprogrammer

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #128 on: April 18, 2018, 09:25:09 PM »
Studs.  :facepalm2:

They are certainly in my future. For this engine though...well we'll see how it turns out.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline crueby

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #129 on: April 18, 2018, 10:26:27 PM »
Studs.  :facepalm2:

They are certainly in my future. For this engine though...well we'll see how it turns out.
Might as well try putting them in in this engine. Remember, practize makes prefekt.


Easy to make, just cut the head off a long screw for the stud, add a nut. If you get adventurous, make some scale looking nuts from hex. If not, hardware store nuts to start out.

Offline Jo

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #130 on: April 19, 2018, 06:42:37 AM »
Easy to make, just cut the head off a long screw for the stud, add a nut. If you get adventurous, make some scale looking nuts from hex. If not, hardware store nuts to start out.

 :'(
Enjoyment is more important than achievement.

Offline Stuart

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #131 on: April 19, 2018, 07:20:28 AM »
🤫😢😱
My aim is for a accurate part with a good finish

Online mklotz

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #132 on: April 19, 2018, 02:57:21 PM »

Easy to make, just cut the head off a long screw for the stud, add a nut. If you get adventurous, make some scale looking nuts from hex. If not, hardware store nuts to start out.

Better yet, Loctite the nut to the headless screw bit and use the resulting structure as a screw that looks like a stud.  That's how it's done in the TLAR workshop.
Regards, Marv
Home Shop Freeware
https://www.myvirtualnetwork.com/mklotz

Offline crueby

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #133 on: April 19, 2018, 04:13:46 PM »

Easy to make, just cut the head off a long screw for the stud, add a nut. If you get adventurous, make some scale looking nuts from hex. If not, hardware store nuts to start out.

Better yet, Loctite the nut to the headless screw bit and use the resulting structure as a screw that looks like a stud.  That's how it's done in the TLAR workshop.
Neat idea.

TLAR? Whats that?

Online mklotz

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Re: PMR 7 Twin Cylinder Steam Engine
« Reply #134 on: April 19, 2018, 04:21:39 PM »
That Looks About Right
Regards, Marv
Home Shop Freeware
https://www.myvirtualnetwork.com/mklotz

 

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