Building the 2.5" Scale Shay
Moderator: Harold_V
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
Finally got some good machining done after a week long hiatus to repair the lathe. The oilers in the headstock bearings had worn out after sixty years, so I was getting hot boxes. Anyway, got the last of the axels turned so they are awaiting their turn in the mill to get their key seats. Also finished the first of the four fireman's side journals and started on the second.
I'm also getting the lathe set up to do the drivers while my dad continues to work the journals, although its just me in the shop during the week.
I'm also getting the lathe set up to do the drivers while my dad continues to work the journals, although its just me in the shop during the week.
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
I'm now set up to start machining wheels in my four jaw chuck. Any body have any tips for turning 6-1/8" spoked, cast iron wheels? I know interrupted cuts are hard on tooling. Also, what do you guys use for the tread taper? I know IBLS calls for 2 degrees, 50 minutes but I don't know of a lathe who's compound rest read angles more accurate than a degree.
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Re: Building the 2.5" Scale Shay
There is a thread about a tool specifically set up to do IBLS.
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
A full tread tool? I have a flange tool that does about a quarter of an inch on the tread.TheBoiler wrote:There is a thread about a tool specifically set up to do IBLS.
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
- makinsmoke
- Posts: 2260
- Joined: Thu Jul 10, 2003 12:56 pm
- Location: Texas Hill Country
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
Yep, that's the one I have. What about the rest of the tread?
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Re: Building the 2.5" Scale Shay
The best way, is too cut the flange area with the tool, flip the wheel around and with the compound, turn a taper and blend it into the finished area,,
Grant
Grant
Re: Building the 2.5" Scale Shay
That's how I did it. For turning I held wheel in 4-jaw to face the back side and drill/bore the hole for the axle. Then used a mandrel to turn the flange and face the front.gcarsen wrote:The best way, is too cut the flange area with the tool, flip the wheel around and with the compound, turn a taper and blend it into the finished area,,
Grant
Re: Building the 2.5" Scale Shay
As for the 2 deg 50 angle, I would just set your compound between 2 and 3. I don't think anyone is going to call you on this one. The idea is you need a little taper so the wheels center between the rails and keep the flanges off the railhead.
John Brock
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- Posts: 983
- Joined: Wed Jun 27, 2012 5:24 pm
- Location: Marietta, Georgia
Re: Building the 2.5" Scale Shay
Thanks Grant!
What speeds and feeds should I use for the various operations?
What speeds and feeds should I use for the various operations?
-Tristan
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Projects
-2.5" scale Class A 20 Ton Shay
Steam Siphon: https://www.shapeways.com/shops/leavitt ... tive-works
Re: Building the 2.5" Scale Shay
Little machine shop has a nice calculator.
Re: Building the 2.5" Scale Shay
Speeds and feeds,,,,, way to many variable to start throwing numbers out!!! the machine and its condition, workholding and set up, actual material, all plays into the #'s
best to start slow and work ones way up, dont want to see any colored chips! or any obnoxios sounds! if its screaming, its not happy either,,
best to ruff out the details, and use the tool just to finish, fastest, and most efficient way.
Grant
best to start slow and work ones way up, dont want to see any colored chips! or any obnoxios sounds! if its screaming, its not happy either,,
best to ruff out the details, and use the tool just to finish, fastest, and most efficient way.
Grant