Y2a Cylinder Castings

[NW Mailing List]

the resources on this list are astounding.
Mike Rector

On Sat, Apr 29, 2023 at 11:42 PM NW Mailing List via NW-Mailing-List <
nw-mailing-list at nwhs.org> wrote:

> That photo does a better job than most on illustrating the size of that
> component. Wow.
>
> Abram, I have two references for you on your question that might help.
> I’ve attached two photos showing an Underwood Portable Boring Bar machine
> bolted to the cylinder studs of #33. This locomotive is an ex LS&I, ex
> Hocking Valley Scenic, current Age of Steam locomotive.
>
> The second two photos are from the International Correspondence School
> book titled “The Steam Locomotive” Part 1, Edition 1. The quote that might
> interest you is in the second of those images and states:
>
> *“The machine usually preferred when machining cylinders is the Norton
> draw-cut shaper. This machine has facilities for boring the chambers and
> planing the flat surfaces in one setting of the casting. The machining of
> the smokebox seat is done at another setting."*
>
> Maybe Gordon can pitch in some color commentary!
>
> Matt
>
> [image: LS,_Set-up_Boring_Bar.jpg]
>
> [image: LS_Front_Portable_Boring_Bar.jpg]
>
>
> [image: IMG_8795.jpeg]
>
> [image: IMG_8796.jpeg]
>
> On Apr 29, 2023, at 1:01 PM, NW Mailing List <nw-mailing-list at nwhs.org>
> wrote:
>
> I would love to see the lathes and  attachments which precision bored
> those Y2 cylinder castings !  Or were they machined with a horizontal
> boring machine?  Does anyone know the equipment and technology used ?
>
> -- abram burnett,
>
> Now Marketing:
> ..... Terra Quantum High Speed Cylonic Turnip Synthesizers
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