Mike:
I have had good success running in both forward and reverse by making a backing plate that uses a re-machinable #3MT Arbor?
? which I press fit into the backing plate.? Now I just put the thread protector on the spindle of my SB9 lathe and insert the chuck directly into the spindle.?
My driving force behind solving this "reverse" problem with a threaded chuck is that I wanted to single point thread in reverse so that I could take all of the "crash" drama out of threading.? Now I just use whichever chuck is best for my project without regard to unscrewing the chuck while in reverse.
Success!
Capt. Art
On Thursday, January 16, 2025 at 04:14:49 PM EST, Mike Poore via groups.io <mpoore10@...> wrote:
I was reading the thread about the Birmingham chuck and it got me to thinking about the limitation of a threaded chuck. Has anyone come up with a way to secure the chuck to enable running the lathe in reverse? Preferably, it would not involve modifying the spindle. Work small enough for a collet can of course be run in reverse, but I am thinking about work that must be chucked.
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A big grub screw, hexagon socket style, bearing down on the spindle thread with a copper slug interposed to prevent damage. ? Eddie
?
------ Original Message ------
From: lhm@...
To: [email protected]
Sent: Thursday, January 16th 2025, 22:02
Subject: Re: [SouthBendLathe] SB9 Reverse
? Desperation Station: ? 1)? Apply enough plumber's Teflon tape to the spindle to make it quite difficult, but not impossible, to tighten the chuck against its stop; ? 2)? Take many light cuts;? ? 3)? Run slow enough to be able to intervene and stop the chuck when/if it starts to back off the spindle. ? This has worked well enough for me, used very occasionally on my 1961 SB9A, to forestall the need to spend huge money on an alternative (stronger) system. ? Mileages always vary ... ? ?
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Desperation Station:
1)? Apply enough plumber's Teflon tape to the spindle to make it quite difficult, but not impossible, to tighten the chuck against its stop;
2)? Take many light cuts;?
3)? Run slow enough to be able to intervene and stop the chuck when/if it starts to back off the spindle.
This has worked well enough for me, used very occasionally on my 1961 SB9A, to forestall the need to spend huge money on an alternative (stronger) system.
Mileages always vary ...
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I was reading the thread about the Birmingham chuck and it got me to thinking about the limitation of a threaded chuck. Has anyone come up with a way to secure the chuck to enable running the lathe in reverse? Preferably, it would not involve modifying the spindle. Work small enough for a collet can of course be run in reverse, but I am thinking about work that must be chucked.
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Re: Birmingham self-centering 4-jaw chuck
Don't know whether your lathe has plain or rolling element bearings.? On a couple of ocasions, I've had to do the following to our 1943 14.5" SB:
Lift both main bearing caps and remove about .003" of shims.? Set aside carefully so they ultimately go back where they originated.? Replace the bearing caps and tighten down hard.? Do NOT remove too much shim, or the caps may distort.? Do not engage back gear.? You can now apply all the torque you can find a method to apply.? I had a 3' Stilson with another 3' scaffold pole extension and that didn't shift it without no.2 body applying lateral shocks over the female threaded extension of the backplate via a drift & 4 lb hand hammer.? On another occasion I applied a burning torch to the outside of the threaded part to shock expand it.
No harm has resulted from the above.? I only use the back gears for locking if my first jerk with the chuck key works.
Reassembly is a good opportunity to check the felts & bearing lift.
Ed
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-------- Original message -------- From: "Bill in OKC too via groups.io" <wmrmeyers@...> Date: 16/01/2025 17:38 (GMT+00:00) Subject: Re: [SouthBendLathe] Birmingham self-centering 4-jaw chuck
Instead of the impact wrench, try hanging a weight off the end of a big wrench clamped on that bolt, and give it a shot of your favorite penetrating oil. I've successfully used both WD-40 and PBBlaster for that. I wasn't? in a hurry. Took a couple of days. I'd spray it every time I walked past it.?
Bill in OKC?
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
Expect in one hand, expectorate in the other. See which one gets full first.
On Thursday, January 16, 2025 at 09:16:05 AM CST, Dennis LaMonica via groups.io <dennislamonica@...> wrote:
Looks like a threaded chuck with a set screw against the threads to prevent unscrewing when the lathe is reversed. The chuck may be stuck. Do not use the back gears to lock the spindle. You may break teeth.? If it is a threaded chuck, place the spindle in "neutral" so that the chuck and spindle turn free. Chuck up a large diameter bolt like 1/2-3/4" (12mm +) and use an impact wrench in reverse to break the chuck free.??
Dennis
-- Dennis western NY, USA
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Re: Birmingham self-centering 4-jaw chuck
Instead of the impact wrench, try hanging a weight off the end of a big wrench clamped on that bolt, and give it a shot of your favorite penetrating oil. I've successfully used both WD-40 and PBBlaster for that. I wasn't? in a hurry. Took a couple of days. I'd spray it every time I walked past it.?
Bill in OKC?
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
Expect in one hand, expectorate in the other. See which one gets full first.
On Thursday, January 16, 2025 at 09:16:05 AM CST, Dennis LaMonica via groups.io <dennislamonica@...> wrote:
Looks like a threaded chuck with a set screw against the threads to prevent unscrewing when the lathe is reversed. The chuck may be stuck. Do not use the back gears to lock the spindle. You may break teeth.? If it is a threaded chuck, place the spindle in "neutral" so that the chuck and spindle turn free. Chuck up a large diameter bolt like 1/2-3/4" (12mm +) and use an impact wrench in reverse to break the chuck free.??
Dennis
-- Dennis western NY, USA
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Re: Birmingham self-centering 4-jaw chuck
Looks like a threaded chuck with a set screw against the threads to prevent unscrewing when the lathe is reversed. The chuck may be stuck. Do not use the back gears to lock the spindle. You may break teeth.? If it is a threaded chuck, place the spindle in "neutral" so that the chuck and spindle turn free. Chuck up a large diameter bolt like 1/2-3/4" (12mm +) and use an impact wrench in reverse to break the chuck free.??
Dennis
-- Dennis western NY, USA
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Re: Birmingham self-centering 4-jaw chuck
?
This one does not have the fingers like yours.??
?
Could the chuck be threaded on the spindle and the fingers are there should you reverse the lathe too fast to keep the chuck from spinning off?
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Re: Birmingham self-centering 4-jaw chuck
https://www.tools-n-gizmos.com/specs/Lathe_Spindle_Mount.html
HTH!
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
Expect in one hand, expectorate in the other. See which one gets full first.
On Tuesday, January 14, 2025 at 06:35:04 PM CST, Dave Rygmyr <davidry@...> wrote:
I've not been able?to find the specs online. Here's a photo showing the connection:
the specs are probably online
On 1/14/25 7:02 AM, sapark123321 via groups.io wrote:
It sounds like a camlock attachment.?? You will need to count the number of the camlocks you have and the diameter of the camlocks and the diameter of the outside of the spindle that the chuck gets centered on.? These will help you find out which standard
camlock you have on your lathe.
?
After You need to buy a backing plate for your lathe then machine it to fit your chuck and your lathe.?? Backing plate diameter needs to match (roughly) the diameter of the chuck you want.
?
Here is a good video on how to make the backplate ?
?
If you buy a premade backing plate you can start from 23.35 minutes into the video.
?
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Re: Birmingham self-centering 4-jaw chuck
Can you take the chuck off and take a picture of the spindle nose?
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On Jan 14, 2025, at 16:35, Dave Rygmyr via groups.io <davidry@...> wrote:
?
I've not been able?to find the specs online. Here's a photo showing the connection:
the specs are probably online
On 1/14/25 7:02 AM, sapark123321 via groups.io wrote:
It sounds like a camlock attachment.?? You will need to count the number of the camlocks you have and the diameter of the camlocks and the diameter of the outside of the spindle that the chuck gets centered on.? These will help you find out which standard
camlock you have on your lathe.
?
After You need to buy a backing plate for your lathe then machine it to fit your chuck and your lathe.?? Backing plate diameter needs to match (roughly) the diameter of the chuck you want.
?
Here is a good video on how to make the backplate ?
?
If you buy a premade backing plate you can start from 23.35 minutes into the video.
?
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Re: Birmingham self-centering 4-jaw chuck
I've not been able?to find the specs online. Here's a photo showing the connection:
toggle quoted message
Show quoted text
the specs are probably online
On 1/14/25 7:02 AM, sapark123321 via groups.io wrote:
It sounds like a camlock attachment.?? You will need to count the number of the camlocks you have and the diameter of the camlocks and the diameter of the outside of the spindle that the chuck gets centered on.? These will help you find out which standard
camlock you have on your lathe.
?
After You need to buy a backing plate for your lathe then machine it to fit your chuck and your lathe.?? Backing plate diameter needs to match (roughly) the diameter of the chuck you want.
?
Here is a good video on how to make the backplate ?
?
If you buy a premade backing plate you can start from 23.35 minutes into the video.
?
|
Re: Birmingham self-centering 4-jaw chuck
the specs are probably online
On 1/14/25 7:02 AM, sapark123321 via
groups.io wrote:
toggle quoted message
Show quoted text
It sounds like a camlock attachment.?? You will need to count
the number of the camlocks you have and the diameter of the
camlocks and the diameter of the outside of the spindle that the
chuck gets centered on.? These will help you find out which
standard camlock you have on your lathe.
?
After You need to buy a backing plate for your lathe then
machine it to fit your chuck and your lathe.?? Backing plate
diameter needs to match (roughly) the diameter of the chuck you
want.
?
Here is a good video on how to make the backplate ?
?
If you buy a premade backing plate you can start from 23.35
minutes into the video.
?
|
Re: Collets SB3 for SB lathe 9
Hi,
I own a set of metric collets. Just looking for a drawbar for SB-2 (2A) collets.
greetz,
Ruud
?
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Re: Birmingham self-centering 4-jaw chuck
It sounds like a camlock attachment.?? You will need to count the number of the camlocks you have and the diameter of the camlocks and the diameter of the outside of the spindle that the chuck gets centered on.? These will help you find out which standard camlock you have on your lathe.
?
After You need to buy a backing plate for your lathe then machine it to fit your chuck and your lathe.?? Backing plate diameter needs to match (roughly) the diameter of the chuck you want.
?
Here is a good video on how to make the backplate ?
?
If you buy a premade backing plate you can start from 23.35 minutes into the video.
?
|
Re: lubricating the quick change on a single tumbler 13 inch
It is kinda suspicious that the noise occurs in whatever gear you
select.? It may be coming from before or after the gear box.? You
might want to check the gears which feed the gearbox from the
spindle and listen carefully to the apron to see if it is coming
from there
HTH Jack
On 1/13/2025 12:13 AM, Chuck Lindquist
via groups.io wrote:
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I have a 1947 vintage 13 inch SB with the single stumbler
quick change gear box.
I don't use the quick change very often, but today when I
used it, the longitudinal feed seem to work like normal, but the
gears were very noisy.
I would describe the sound as a "rattling".
Before
operation, I did add the Type B oil in of the gits oil caps on
the quick change gear box.
I then tried operating the quick change in several different
feed ranges and the rattling noise was present in all of the
ranges I tried.?
Is this rattling noise indicative of a mechanical problem
developing in the gear box or is it just a lack of lubrication
on the gear teeth face??
If mechanical any ideas as to where to look to diagnose?
If a lubrication issue, should I also be adding lubrication
to the gear faces??If so, what type of lubrication is
recommended?
Thanks.
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Re: Birmingham self-centering 4-jaw chuck
Most small Chinese lathes in the range of 11-12 inches use a D1-4 spindle
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On Jan 13, 2025, at 17:39, Dave Rygmyr via groups.io <davidry@...> wrote:
? Hello everyone, and thanks for letting me join. I wish I had a SB but I don't, I was gifted a Birmingham YCL-1126BD lathe and I have to make do. I was hoping to get a self-centering 4-jaw chuck for it. Birmingham is no help. I've found a number of them, even on Amazon, but none of the photos or descriptions show the back of the chuck or indicate the connection type and frankly I'm lost. The 3-jaw on there now uses little L-shaped hooks or whatever you want to call them to hold it in place. I would sincerely appreciate any assistance you guys might be able to give me.
?
Dave
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Re: Birmingham self-centering 4-jaw chuck
how does the chuck mount ? maybe a pic of the spindle mount ?
animal
On 1/13/25 5:32 PM, Dave Rygmyr wrote:
toggle quoted message
Show quoted text
Hello everyone, and thanks for letting me join. I wish I had
a SB but I don't, I was gifted a Birmingham YCL-1126BD lathe and
I have to make do. I was hoping to get a self-centering 4-jaw
chuck for it. Birmingham is no help. I've found a number of
them, even on Amazon, but none of the photos or descriptions
show the back of the chuck or indicate the connection type and
frankly I'm lost. The 3-jaw on there now uses little L-shaped
hooks or whatever you want to call them to hold it in place. I
would sincerely appreciate any assistance you guys might be able
to give me.
?
Dave
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Birmingham self-centering 4-jaw chuck
Hello everyone, and thanks for letting me join. I wish I had a SB but I don't, I was gifted a Birmingham YCL-1126BD lathe and I have to make do. I was hoping to get a self-centering 4-jaw chuck for it. Birmingham is no help. I've found a number of them, even on Amazon, but none of the photos or descriptions show the back of the chuck or indicate the connection type and frankly I'm lost. The 3-jaw on there now uses little L-shaped hooks or whatever you want to call them to hold it in place. I would sincerely appreciate any assistance you guys might be able to give me.
?
Dave
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Re: Collets SB3 for SB lathe 9
Hi There,
?
I take it you have a 10R type Heavy Ten (with the 1-7/8" x 8 tpi
spindle).
?
I have a lot of those 2A (a.k.a. SB 2).? I have three 10R's and this is
the size collet they use.? I also have some of the spindle adapters
they use (#4 Morse to 2A) if you need one.? I don't think I have
any metric 2A collets if that is what you are looking for.
?
Good Luck!
-Blue Chips-
Webb
?
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Re: Collets SB3 for SB lathe 9
According to this SB picture, the SB-3 is equal to the 3C collet usable on a SB9. On the white paper picture are the available collets SB-3.
One of the 10mm collets is a non SB collet but fits SB-3 drawbar. Same threath and demensions.
For a SB-10-Heavy I need the 2A or SB-2 collets.?
2-A = SB-2
3-C = SB-3
4-C = SB-4
5-C = SB-5
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Bill in OKC too
Ruud