Atlas Refurb and Tooling

[Jamiethesquid]

Boy that under drive would work nicely for my space. I am going to have to give that some further thought. How does the belt rout up to the headstock? Some more pics would be great.


Jamie

 

[wa5cab]

One thing that it will require is machining the insides of the front and rear ways under the headstock to provide clearance for the spindle belt. The factory underdrive version has two countershafts. One fixed and one movable. The spindle and last countershaft pulleys are about the same diameter as the #2 step on the cone pulleys.

Robert D.

 

[wa5cab]

Jamie,

I meant to comment several days ago on one statement made in the page from lathes.uk. I do not actually know whether the spindle in the sleeve bearing model 101.07301 is longer than the one in the Timken bearing Atlas 618 or not. But in any case, the only change to 6" made in late 1957 for the 1958 model year is that Atlas ceased production of the 101.07301 and Sears began selling the 618 under model number 101.21400. No changes were made to the lathe. This could be the source of the widely distributed Internet disinformation that the spindle threads on the 618 were originally 1"-8 and changed to 1"-10. They weren't and they didn't.

Also, I'm going to upload a PDF made from a cleaned up JPG that one owner took of the 2-step motor pulley M6-428 on his 618. The dimensions are close to what what was shown down this thread. Dimensions of the "V"'s aren't shown. Get those out of Machinery's Handbook.

 

[Jamiethesquid]

Thanks again Robert. I just started priming the base castings tonight with a self etching primer in prep for the Hammerite.


Jamie

 

[Jamiethesquid]

The under drive sounds like a no go. Like I said I have a couple of donor pulleys in that range of size to get me going and I think that the first project this little lathe will build is a correct 2 step pulley for itself. I am leaning toward steel for extra mass. And I might even have a line on a chunk of naval brass that size.


Jamie

 

[Jamiethesquid]

I have looked up the correct dimensions in the Machinerys Handbook


Jamie

 

[Jamiethesquid]

Here is another question. I have a copy of MOLO copyright 1955. It is in Fair to poor condition. I am going to scan it into PDF so I can always have it at hand in my new iPhone 6 plus. Could I share this in our downloads section or would this be in violation of some dumb law.


Jamie

 

[wa5cab]

Jamie,

We aren't sure whether scanned copies of the MOLO would violate copyright or not and choose not to find out experimentally. So don't upload it.

On the other hand, so long as you retain the original, making a backup or working copy for yourself has for many years usually been deemed acceptable.

Robert D.

 

[Reeltor]

Here is another question. I have a copy of MOLO copyright 1955. It is in Fair to poor condition. I am going to scan it into PDF so I can always have it at hand in my new iPhone 6 plus. Could I share this in our downloads section or would this be in violation of some dumb law.


Jamie

What is MOLO?

Mike

 

[Jamiethesquid]

Manual of Lath Operations


Jamie