Author Topic: An Upshur Farm Engine (slight return)  (Read 57247 times)

Offline zeeprogrammer

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Re: An Upshur Farm Engine (slight return)
« Reply #135 on: March 24, 2013, 03:41:18 AM »
Looking good Tim.

I remember the first time I did some knurling. Went a lot better than I thought it would.

Before parting off, a little bit of file on either side of the knurl makes it look even better. Knocks off the sharp edges too.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Troutsqueezer

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Re: An Upshur Farm Engine (slight return)
« Reply #136 on: March 24, 2013, 04:20:36 AM »
One area where Metal Butcher and myself ran into some issues (for lack of a better term), was the taper on the needle screw. The longer the taper, the better. Makes for easier adjustment to hit that sweet spot.

Offline ths

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An Upshur Farm Engine (slight return)
« Reply #137 on: March 24, 2013, 08:23:17 AM »
Tim, your spelling is correct. Spellcheckers can be so arrogantly wrong at times, especially when it comes to 'niche' words.

Hugh.

Offline tvoght

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Re: An Upshur Farm Engine (slight return)
« Reply #138 on: September 01, 2013, 09:00:20 PM »
It's been a coon's age since I last reported in on the Upshur Farm Engine.
Progress has been slow, but I've got a couple of things to show.

I made a fuel tank from a little steel press-on lid container.
I fabricated and soft-soldered a line fitting and a filler cap. I had hoped
to keep the natural finish of the metal here, but the discoloration from soldering
will force me to paint it. I wonder if I attempt to bake on the paint, if that
will prevent the fuel from eating it?


Some time ago I made a mount clamp for the Hall-effect sensor, and the nylon
part I made was ill-fitting and just wrong. Today I managed to make a new part
that fits well and is right. The old part is shown along-side.



The achievement in the next photo is subtle. The gear shaft which doubles as
the governor arm pivot will have a shoulder screw as the pivot. I milled the
top flat to make a nice seat for the head of the pivot screw!



And now as partial explanation of why Upshur progress has been so slow. For the
last several months an alien presence has invaded a corner of my shop.


Very few chips have been made, but plans are afoot. Stay tuned.


--Tim

Offline Don1966

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Re: An Upshur Farm Engine (slight return)
« Reply #139 on: September 01, 2013, 10:59:26 PM »
Hi Tim, glad to see you back on it again. Looks like someone has got themselves a CNC. On the fuel container I would use expoxy paint or just gun blue it. The brass fitting would stand out nice with the container blued.

Don

Offline tvoght

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Re: An Upshur Farm Engine (slight return)
« Reply #140 on: September 02, 2013, 12:55:31 AM »
Great idea with the epoxy paint, Don. And I'll look into bluing too.

I won't get tired of turning the cranks on my Bridgeport, but I have wanted to play with CNC for awhile.

--Tim

Offline b.lindsey

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Re: An Upshur Farm Engine (slight return)
« Reply #141 on: September 02, 2013, 01:49:36 AM »
The progress is looking good Tim. Can you provide some details on the "alien" presence...looks nice in the picture.

Bill

Offline tvoght

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Re: An Upshur Farm Engine (slight return)
« Reply #142 on: September 02, 2013, 02:13:20 AM »
Hi Bill,
I didn't want to say too much until I had more to report. I've been off on a giant diversion writing software to generate g-code. And now everyone will go all incredulous on me wondering why I would be doing that when there is so much out there...(and so on). I am writing software because (even though it's my day-job) I like writing software. This is a chance to merge a couple of activities I enjoy.

As for the machine: It's a Grizzly G0704 conversion. I did not do the conversion. It has a pneumatic power drawbar and uses the Tormach Tooling system.
There is a single special 3/4" R8 collet and all tool-holders have a 3/4" straight shank and an undercut face which spans the collet front and seats in a repeatable fashion against the front of the mill spindle (I hope that makes sense). Tool change is a matter of stepping on a floor pedal valve, pulling out a tool-holder, and sticking in another one.

I am using LinuxCNC as control software. Again, a personal choice which I'm not even slightly interested in arguing about (there's a reason I say that).

--Tim


Offline NickG

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Re: An Upshur Farm Engine (slight return)
« Reply #143 on: September 02, 2013, 11:14:53 AM »
Tim, looking good, that mill looks very similar to mine, they do seem to lend themselves well to CNC conversions!

 

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