Spindle hole too small to chamber through? Here's an idea....

R

RoyB

Member
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This is also an old way of making accurate work on a lathe that has worn ways near the spindle.
 
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Every time somebody touts "old American Iron" and every time I look at what can be done and STILL do accurate work I giggle.

al
 
I like it! I don't need one but I may make it anyway.

BTW, what is the big oil cup under the bearing? What does it lubricate?

Ray
 
I fail to get your point. I can see that is a South Bend. looks like a early Heavy 10??. It has the spindle capacity to do most benchrest diameter barrels.

I can see the ways might be worn near the spindle. What does this have to do with doing barrel fitting?? Even worn ways will not inhibit turning and threading a barrel tenon, even a Stolle Teddy which is about 1 3/8" long.

How would you align the left end of the barrel with that rig?

How would you dial in the chamber with with that rig?

I'm missing something here.

Nice pictures tough.
 
Cheechako said:
BTW, what is the big oil cup under the bearing? What does it lubricate?

Ray
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Ray, that big oil cup lubricates the front spindle bushing. There is one just like it on the rear bushing. This lathe doesn't have spindle bearings. That is what makes them so rigid.
 
Caution

Whoever owns that rig better pay up their life insurance. I just zoomed that top picture and the weld is broken just behind that chuck flange plate!!!!!!!!!!!!!!!!!!!!!
 
JerrySharrett said:
Ray, that big oil cup lubricates the front spindle bushing. There is one just like it on the rear bushing. This lathe doesn't have spindle bearings. That is what makes them so rigid.
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Jerry - Yeah I figured it had a bushing rather a bearing, but the cup seemed too low. It must be a big busing.

Ray
 
It's not my lathe, so I have no idea about the oil cup. I saw this on another forum I frequent.

I just zoomed that top picture and the weld is broken just behind that chuck flange plate!!!!!!!!!!!!!!!!!!!!!
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Good catch, it sure does look cracked! I would have just threaded the extension for a threaded back plate...........
 
Personally, I see a lot of future in that 1st photo. Look at it for a while and think, let's see if y'all can see it. It should be a light bulb to some of you.
 
Actually there are 3 pipe threaded holes on each spindle bearing reservoir.
The oil cup is supposed to go in the center hole.
 
RoyB said:
It's not my lathe, so I have no idea about the oil cup. I saw this on another forum I frequent.



Good catch, it sure does look cracked! I would have just threaded the extension for a threaded back plate...........
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The other fun thing is the electrical switch with no cover plate where chips can be flung into it if the chuck is on the headstock. Last time I checked, metal swarf conducts electricity. That could put the thrill back into using that lathe.

Fitch
 
Only on Newer Models

Many, Many of the older ones have ony the oilers; no pipe plugs. Some of the real old South Bends had a small oiler on top of the cap. There are also machines that have a metering oiler on top that has a glass resovoir.

Anyone interested can go to the Practical Machinist Site and visit the South Bend Forum. There is a wealth of interesting information on there.
 
How is this any better than just using the steady rest on a trued collar/spider on the barrel? Maybe I'm just set in my ways because my lathe won't fit a blank through the headstock.

Regards, Ron
 
RJM said:
How is this any better than just using the steady rest on a trued collar/spider on the barrel? Maybe I'm just set in my ways because my lathe won't fit a blank through the headstock.

Regards, Ron
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The setup pictured looks like it was made for a special job. It wouldn't be worth crap for chambering, IMO. For example, no way to line up the other end of the barrel and the chuck is a 4-jaw universal with no way to adjust it for runout.
 
Jerry,

No one suggested this was set up for gunsmithing.....

But IF you had a spider on the outboard side and IF you were threading a tapered barrel that would fit into the limited bore of your headstock and IF the chamber end of the barrel was to large to fit into the headstock and IF you made this device quite a bit shorter because you don't need it this long and IF you decided to use a Tru-Adjust chuck or a real 4-Jaw and IF you did all of this because you wanted the extra mass around the area you are chambering for less vibration and a better cut and IF you went through all this work because you cut better chambers and cut better threads................Then it just might be a good idea...No?
 
:confused:The lead statement on this thread was Spindle hole too small to chamber through? Here's an idea.... or did I just dream that:confused::confused:

Too many IFs. Or not enough. You forgot the one about IF a frog had wings.
 
Operative word here is "idea"..........Not a solution, but something to expand upon......Something to use your imagination with......being a machinist one has to think outside the box. Rarely does someone bring you a full baked solution......if they did, you wouldn't be a machinist, you would be a machine operator.

Now everybody just lighten up........the snow will melt and this cabin fever will subside... :)
 
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