Author Topic: Flyboy Jim's PM Research #5  (Read 10500 times)

Offline Flyboy Jim

  • Full Member
  • ****
  • Posts: 1906
  • Independence, Oregon
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

  • Full Member
  • ****
  • Posts: 91
  • Jordan, MN - 6147 nice folks and one grouch!
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 when I can!

Offline Flyboy Jim

  • Full Member
  • ****
  • Posts: 1906
  • Independence, Oregon
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

  • Full Member
  • ****
  • Posts: 1906
  • Independence, Oregon
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".

Offline crueby

  • Full Member
  • *****
  • Posts: 11191
  • Rochester NY
Re: Flyboy Jim's PM Research #5
« Reply #109 on: December 01, 2019, 02:32:32 PM »
 :popcorn: :popcorn: :popcorn:

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13841
  • Dallas, NC, USA
    • Workbench-Miniatures
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

  • Full Member
  • *****
  • Posts: 3843
  • Boise, Idaho USA
    • Photo Bucket
Re: Flyboy Jim's PM Research #5
« Reply #111 on: December 01, 2019, 04:32:04 PM »
Nice work Jim, everything looks great!

Dave

Offline Kim

  • Global Moderator
  • Full Member
  • *****
  • Posts: 4176
  • Portland, Oregon, USA
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

  • Full Member
  • ****
  • Posts: 1906
  • Independence, Oregon
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".

Offline Flyboy Jim

  • Full Member
  • ****
  • Posts: 1906
  • Independence, Oregon
Re: Flyboy Jim's PM Research #5
« Reply #114 on: December 15, 2019, 04:41:25 AM »
The next operation on the Cylinder Head was to turn it back around in the chuck and machine the required recess. The cutters I had on hand wouldn't work (shown on the left) so I treated myself (early Christmas present to myself) to a set of Arthur Warner 35 degree left and right profile cutters (shown on the right). They worked great!




First I turned the outside of the recess.



Then the inside.



These cutters left a slightly rounded corner so I used a groover to square it up.



The height of the boss (?) in the middle needed to be reduced, so I did that next.



All done. Just needs a cylinder to mount it on. I'll work on that next.





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 b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13841
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: Flyboy Jim's PM Research #5
« Reply #115 on: December 15, 2019, 01:31:49 PM »
Can't go wrong with Warner tooling Jim. Glad Santa found you a bit early this year.

Bill

Online bent

  • Full Member
  • ****
  • Posts: 492
  • Wet side of Washington State, USA
Re: Flyboy Jim's PM Research #5
« Reply #116 on: December 16, 2019, 06:26:10 PM »
I like those 35 degree inserts too Jim.  Used one for a custom repair tool we made for the shop, and it worked beautifully.  Will have to look up those Warner tools, got a link?  Oh and nice work on the heads, still following along :)

Offline propforward

  • Full Member
  • ****
  • Posts: 741
  • MN, USA
Re: Flyboy Jim's PM Research #5
« Reply #117 on: December 16, 2019, 06:37:43 PM »
I'm following along as well. Lovely engine, and great progress. Picking up tips when I can.

I must admit, the Arthur Warner insert tooling looks very good - tempted to try it myself to get over some of my tool grinding woes.

https://www.arwarnerco.com/
Stuart

Offline Flyboy Jim

  • Full Member
  • ****
  • Posts: 1906
  • Independence, Oregon
Re: Flyboy Jim's PM Research #5
« Reply #118 on: December 17, 2019, 02:54:13 AM »
Thanks Bill, Bent and Stuart,

Bent...........here's the link to the 35 degree profile bits: https://www.arwarnerco.com/Kit-16-35-Degree-Profile-V-Right-Hand-Left-Han-p/kit-16.htm  Expensive.............but worth it.

Got going on the Cylinder today. Centered it in the 4 jaw and turned the face that mates with the frame.



Turned the diameter to fit the recess in the frame with my new favorite bit.



Bored the Cylinder to 0.625 as called out.



Turned the cylinder around and mounted it in the 3 jaw. Faced and turned the end to fit the Cylinder Head. Both ends fit.  :whoohoo:







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 crueby

  • Full Member
  • *****
  • Posts: 11191
  • Rochester NY
Re: Flyboy Jim's PM Research #5
« Reply #119 on: December 17, 2019, 02:35:44 PM »
Excellent!   :popcorn: :popcorn: :popcorn: