Author Topic: Flyboy Jim's PM Research #5  (Read 4181 times)

Offline Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #105 on: November 27, 2019, 03:15:25 AM »
Thanks Guys.

Kim, the filing button was actually a little small, but it still helped to keep each side uniform as I filed them.

Roger, thanks for the info on Acrolaps. These seem to be a brand X, but are pretty nice and I think will be helpful once I learn how to use them.

I got started on the Lower Head Casting.

Turned the shoulder to fit into the mainframe.



Drilled and reamed for the piston rod and the the packing gland.





Turned the Lower Head Casting around and trued the face and turned to the correct diameter to fit into the recess in the mainframe.



That left a small area that couldn't be turned to the correct diameter to I made a mandrel to hold it while I turned that bit of metal off.







Everything fits so far. I'll show a picture of that in the next post.

Jim
Sherline 4400 Lathe
Sherline 5400 Mill
"You can do small things on big machines, but you can do small things on small machines".

Offline TerryWerm

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Re: Flyboy Jim's PM Research #5
« Reply #106 on: November 28, 2019, 05:09:04 PM »
Nice to see the great progress you are making!  It's been almost three weeks since I checked in here, so I had some catching up to do, but I am really enjoying your build.

I was going to comment about your 'reamers' being laps, but Roger beat me to it, so no need to say more about them.

Happy Thanksgiving!
Terry

Making chips with old machines - there's nothing like it!

Offline Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #107 on: November 29, 2019, 04:14:05 AM »
Nice to see the great progress you are making!  It's been almost three weeks since I checked in here, so I had some catching up to do, but I am really enjoying your build.

I was going to comment about your 'reamers' being laps, but Roger beat me to it, so no need to say more about them.

Happy Thanksgiving!

Thanks Terry. Certainly not rapid progress, but I'm moving in a forward direction and enjoying myself.

Yes Roger set me straight on my lap set. Not a lot of info about them, but I did find this post that Brian made a while back: http://www.modelenginemaker.com/index.php?topic=4113.0
Also this one by Ramon: http://www.modelenginemaker.com/index.php/topic,1908.0.html

Happy Thanksgiving to you as well.

Jim
Sherline 4400 Lathe
Sherline 5400 Mill
"You can do small things on big machines, but you can do small things on small machines".

Offline Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #108 on: December 01, 2019, 04:20:59 AM »
As I mentioned in the last post, here's a pic of the Lower Head Casting sitting in the Main Frame.



Turned, drilled and reamed the Packing Gland out of bar stock.



Centered the RT on the mill and moved the chuck over. Drilled the mounting holes in the Packing Gland



Moved the chuck back to the lathe and parted off the Packing Gland.



Mounted the Lower Head Casting on the arbor, put it in the 3 jaw and mounted the chuck on the RT. Drilled and tapped the mounting holes for the Packing Gland.



While it was there I drilled the mounting holes.



It's nice to see a few parts that will become an assembly.





There's still a little machining to do to the Lower Head Casting, which I'll do later.

Jim

Sherline 4400 Lathe
Sherline 5400 Mill
"You can do small things on big machines, but you can do small things on small machines".

Online crueby

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Re: Flyboy Jim's PM Research #5
« Reply #109 on: December 01, 2019, 02:32:32 PM »
 :popcorn: :popcorn: :popcorn:

Offline b.lindsey

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Re: Flyboy Jim's PM Research #5
« Reply #110 on: December 01, 2019, 02:34:58 PM »
Coming along great Jim!! Still enjoying following your progress.

Bill

Offline Dave Otto

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Re: Flyboy Jim's PM Research #5
« Reply #111 on: December 01, 2019, 04:32:04 PM »
Nice work Jim, everything looks great!

Dave

Online Kim

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Re: Flyboy Jim's PM Research #5
« Reply #112 on: December 01, 2019, 05:59:24 PM »
Great work on all those little brass parts, JIM!  :popcorn:
Kim

Offline Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #113 on: December 08, 2019, 03:46:47 AM »
Thanks guys.

Got a little work done on the Cylinder Head.

Clamped it in the 4 jaw and turned the bottom flat.



Reversed it in the chuck and moved the chuck to the mill on the RT. Drilled the mounting holes.



Then, using Bill's idea in his build thread, I turned an arbor, drilled and threaded mounting holes to match the holes in the Cylinder Head.  I was then able to mount the Head on the arbor in the 3 jaw and turn the OD.



Jim
Sherline 4400 Lathe
Sherline 5400 Mill
"You can do small things on big machines, but you can do small things on small machines".