To answer your question… I’m interested in EVERYTHING that interests you… 99% of us viewing your channel are here because we love machines and their inter workings…. The wise-cracks and Rants are an extra treat!
What he said! Got started on your channel back in 2017 because I purchased a Craftsman 12x18 and your videos were some of the best (and best) videos I could find on the "care and feeding" of my new toy!
I've always wondered about the old single handle gearboxes. I assumed they were inferior and have less speeds available. I'd love a breakdown from you about them. Your breakdown off the 70 speed gearbox vs the 48 speed gearboxes was great. Comparing these old vs new would be even better. There are still a lot of old single handle lathes out there lurking in home shops! Thanks for all your hard work and effort!
I very much enjoy these tutorials. Spindle bore size can be overlooked when picking up a lathe, but the importance of, can affect the usefulness of the machine forever.
Dear Lyle, I have a 1942 13” SB withe the single lever gear box, love it, makes switching feed speeds fast and easy…as far as issues with the 1” spindle bore, even though the spindle is 1 7/8” x8tpi, it limits what I stick in it, and collet use with my collection of 5Cs are out, glad I gave my 5C drawbar to a wonderful retired shop teacher I know who has a 5900 series Clausing up in the cold north somewhere, but I have a steady rest I can hold larger stock in chuck and work on tailstock end…best wishes, Paul in Orlando
I enjoy my 9" SB late. I found one with a 4.5' bed, and with my steady rest, I don't have any issues with 36" material. Love watching your channel, Mr. Pete.
Good morning Mr. P I have been watching your videos for years. I don’t think you have ever proposed a video idea that I didn’t find interesting. Loved the “rant” this week. Just got my first lathe this week. I believe it is an Atlas/Craftsman 101.07403 (12x36). I only paid $106.22. It didn’t come with anything so I will have to gather various tooling and accessories. I will be watching and rewatching many of your lathe videos. Thanks for sharing your knowledge.
I am glad my Summit 19-4-60 has a 4.125 spindle bore. I have used it several times on 4" pipe. It can also swing 27" with the gap out...great hobby lathe !! I enjoy every video you make and have learned alot, Thanks.
Great Video. Schooling That Everyone Needs To Learn. Thank You For The Lesson. Have Run Into This Issue Before. But Learned To Always Check What The Lathe Can Handle Before Chucking Up.
I have a 1943 heavy 10 with a single tumbler gearbox. It’s deceiving, but you actually get a lot of thread/ speed ranges. It would make an interesting video for viewers to show how you manipulate all those speeds. Great idea, Mr. Pete, thanks for the video as usual 👍👍
I too am interested in the differences between the gear changers. It is interesting to see how the machines evolve whether for ease of production or patent infringement avoidance!
Interesting video even though i knew most of that. Ive owned several south bends, have a nice little atlas now. Ran a Cincinnati at one of the places i used to work. Yes, would certainly enjoy you doing on on the differences of the gearboxes. Thanks, Mr. Pete.
"There is really no call for it...but you might find it interesting". Funny and True on both accounts. It is a truly important specification on a lathe though.
I find these sort of videos very interesting. As I have said I am a woodworker an never even seen a metal lathe. So you are educating me on these, in fact I may know more about metal lathes than some who learned to operate one brand and never explored any further. Yes I would find the gear box information very interesting.
I have a later model South Bend tool room lathe . One of the reasons I purchased this particular lathe is because of the large bore spindle for all the reasons stated . It is so convenient to run larger longer stock in the lathe . Cheers Wild Bill Jeep exploring the remotest regions of northern Canada.” Never stop exploring “
Your videos are always interesting no matter what the contents might be…I’m a yes for making one a video on the topic! I would also love a video on the topic of different lathe manufactures history and who made what!
That was interesting. It just makes me miss my old SB Heavy 10 even more! I never have had the chance to look inside of the gear change boxes so I would be quite interested in a video that shows the difference and how they actually work. Thank you again for your hard work.
This is a great video as it shows a fundamental parameter of machine design that one should consider when buying a lathe. You can see here that they are not all created equal. I think there’s one point to be added here. The rigidity of a lathe is to a large extent determined by the rigidity of the spindle. I read somewhere that this is proportional to the cube of the diameter so the toolroom lathe will be way more rigid than any of the others. This becomes critical for operations like parting off. It also affects the finish and how much of a cut you can take before it chatters. The craftsman 109 (dunlop?) I had was only an MT0 taper in the spindle nose so probably no more than a 5/16” hole and when parting the spindle behaved like a wet noodle and the tool would dig in and crash. My emco has an MT5, similar to your toolroom machine and the difference is like night and day. I would argue that spindle rigidity is almost as important as the max diameter of work you can fit and for some types of work even more important.
Thank you for that nice analysis of the spindle. For some reason, I never particularly thought about it being part of the needed rigidity. But I believe you are right. I also think that the entire weight of a machine is a huge factor in eliminating vibration and delivery of maximum horsepower They do make machines with huge spindles like 4 inch or 8 inch, and they are often used in the oil fields. But of course those machines weigh 20 tons.
This is the first time I hear of the patent on the old gearbox. I have one and it works great. It's a South Bend 14 1/2" and takes a 4c collet. I don't have any so I bought a 5c collet chuck and made the adapter plate. Might be the best thing I have done to it. Great video. Always learning from you. Thanks
I for one would I'd like to know the differences between the two gearboxes, I have a 9 inch Boxford lathe made in England and it is a clone of the South Bend with the same gearbox. your uploads are always interesting, never boring!
Thinks for the video Mr. Pete. Some time when I am turning a larger part. I just have smaller lathes mostly. It would be great to see the change gear box comparison.
Hi Mr. Pete, I do enjoy your videos and never miss one. I frequently feel restricted by the 19mm (3/4")spindle bore on my South Bend 9 clone made in Sweden. My solution is the 1000mm (40") between centers bed on this lathe. Cheers, Peter
I wish I had a 9" SBL with a 3" spindle bore! That 3/4" spindle bore was always a tad too small. The many times I wanted to shove something 1" OD thru the spindle, wasn't going to happen. Later in life, bought a 13" Sheldon lathe with a 1-1/2" spindle hole, I was in hog heaven! Now, I want a lathe that has a 3" hole in the spindle. I have run lathes with 12" hole in the spindle, no that too big for my shop. As always, thanks for sharing, Ken
Had a WW2 vintage 13" SB that I bought incomplete. Missing the gearbox among other items. Ended up with the single tumbler design. Before I ever got that lathe running, I found a deal with a 1958 SB 13" (dual tumbler) and a 1959 Bridgeport, so that old SB has been slowly parted out. I've not looked back. I also have a nice 1956 9" SB Model A. I sort my projects to determine which task I do on which lathe. Sometimes the spindle bore size plays into the decision.
I totally agree with everything you said. And yes, sometimes my choice of machines is determined by the spindle size. Apparently this is not a problem for most people because this was a worthless video that no one has watched.
A steady rest is something all of my lathes have. It solves most of my problems with stock too large to pass through the spindle, in fact, it's solved all of them so far.
Enjoyed the video, and yes I have run into my stock not going through the spindle on my 12 in. Atlas . I was lucky it was short enough that I could chuck it in the three jaw and use and use the steady rest to do the work. I'm sure I would enjoy seeing the differences in the quick change gear boxes if you decide to make a video on it .Southern Kentucky chiming in. 👍
Yes please! let's learn about the SB gear boxes and why they changed. One additional question - if you have a small lathe(Craftsman, SB etc.) how much stock length can "safely" protrude from the back of the lathe before you bend the bar and have a "shorts-changing" moment?!
Great video Mr. Pete! I run into bore size issues all of the time, my lathe's bore is only .806 inches, but I work with a lot of 1 inch stock. The tailstock and steady rests get a lot of use. Someday when my ship comes in I'll invest in a larger lathe, lol! Yes, would like to see a video on the gearboxes. Thanks posting! 😃
As always another great video. As far as I'm concerned you could read the phone book and I would watch the video, so please do a video on the two quick change gear boxes
I have a HF Mini Lathe. The spindle bore is about 0.850". Yes there have been a few occasions where the stock was too long and the diameter too large. That's when turning gets interesting. I vote YES on a video regarding the difference between the quick change gear boxes. KOKO!
Love the videos MrPete. I just adapted a South Bend two tumbler gear box like in the video to my Atlas 12-inch lathe, I got tired of changing loose gears when threading and the atlas 12-inch gearboxes are way overpriced in the resale market. The south Bend box I found on Ebay, new old stock never been on a lathe 115.00 bucks. It's a relatively simple install
If you do a gearbox video I’ll watch it but it wouldn’t be something I would ask for. Have I run into spindle bore restrictions? Oh yes!! And when I got my latest lathe with a much bigger bore it was an epiphany! The SB Toolroom lathe looks like it needs a hot date with a bucket of Evaporust. 😂 God bless and thanks for all your videos. I’ve never missed a single one. Mike
My Jet 12x36 has a 1 3/8 bore. I believe the factory would have labeled it a tool room lathe since it has hardened ways, a coolant sump with pump and a way to align the head axially with the bed. It has the D1-4 cam lock spindle as well.
i started with a 9" SB, but the small spindle bore really limited what i could do. When i got my SB heavy 10 with the 1 3/8 " bore, that really opened up a world of possibilities!
Discussing quick change gear boxes on these small machines would be interesting to me. Spindle bore size limitations frusrate me, and this limitation partially drove me to invest in larger machines, LeBlond, Elliott and American Pacemaker. Although much larger my Amercan Pacemaker only has an MT4 tailstock, while the smaller LeBlond has an MT5 tailstock. The Elliott, only a 15" machine, probably has the largest spindle bore of my machines, and was amo g the most attractive feature that drove my purchase. When I purchased my little Craftsman (Atlas), my first metal lathe, an early job required chucking 1/2" BI. It wouldn't go through the spindle bore, which is nominally 3/4". My wood lathes all have small spindle bores. I understand that wood turners work mostly between centers, face plates, or short jaw chucks. Having machining background, I have frequently desired to chuck on long stock that won't fit the small wood lathe bores. I detest getting wood chips on my oily metal machines, but I have yielded in the past. The metal lathe really assisted this novice wood turner with rigid and predictable tool presentation! I own 3 wood lathes and high-end tooling, but quality machines and tooling hasn't vastly improved my limited wood turning skills. I am convinced that to be an accomplished wood turner, you should dispose of every other shop machine besides a good bandsaw and solely focus on wood turning. Wood turning is a lot of fun, but it requires time and dedication at the lathe to master even basic skills.
Thanks Mr Pete. I would be interested in knowing more about the single tumblers. I have a SB 9" that is made on the A, B, C model platform. It is the one that offers the most options. It has the signal tumbler and the 5C size headstock spindle. I'm not sure of it's age but I'd say no newer than 1940's. I also have a heavy 10 tool room lathe. It has cross X webbing in the bed where the 9" has blocks cast between the bed sides. Thanks again and enjoy your weekend.
Good morning Mr. Pete. I passed on a SB with the old style single tumbler gearbox because we could not get it to shift out of whatever position it was set. Looking back, I can't really tell if it was a 10" or possibly a 9" tool room lathe. So, yes, I would be interested if you pursue it further. I started with a SB 9" with a 3/4" bore and now have a Clausing 4900 with a 1.062" bore. So far I have not been hindered by the small bore diameter.
It is an important feature to know. I have two nice lathes, but neither has a bore big enough for rifle barrels, fortunately one is long enough to compensate, but that increases set up times, and I still have to do a less than ideal kludge for chambering.
Would love to see the inside workings of the quick change gear boxes and how they work. I understand the basics, however seeing how it works would be great... My Harrison 13" lathe has a 1 9/16" bore which accommodates most stock I turn.
Please do a video on the different gearbox designs. I believe it was “basement shop guy” that has a video on how he prefers the single tumbler design as you can shift the top tumbler on the fly while going to change speeds as the gear design meshes. I know that there are also different oil gallery designs on the single tumbler gearbox(different versions of single tumbler). With the latter design being a much improved oil gallery and tube dropping oil directly on the gears. I had to replace a gearbox and could see the difference between the two oil gallery designs of the single tumbler gearbox.
I would love to hear/see the comparison of the two quick-change boxes. Especially if you could show the "underside" and explain the differences in how each works.
To answer your question… I’m interested in EVERYTHING that interests you… 99% of us viewing your channel are here because we love machines and their inter workings…. The wise-cracks and Rants are an extra treat!
👍👍
What he said! Got started on your channel back in 2017 because I purchased a Craftsman 12x18 and your videos were some of the best (and best) videos I could find on the "care and feeding" of my new toy!
I've always wondered about the old single handle gearboxes. I assumed they were inferior and have less speeds available. I'd love a breakdown from you about them. Your breakdown off the 70 speed gearbox vs the 48 speed gearboxes was great. Comparing these old vs new would be even better. There are still a lot of old single handle lathes out there lurking in home shops! Thanks for all your hard work and effort!
👍👍
Good morning Lyle. Your posts are never boring. Have a good week.
Mr. Pete, the information you share is invaluable, never boring, and always appreciated.
Glad you enjoy the videos!
I very much enjoy these tutorials.
Spindle bore size can be overlooked when picking up a lathe, but the importance of, can affect the usefulness of the machine forever.
I really like seeing and hearing the details of these old machines. Keep it coming. Thanks.
I always enjoy the early Saturday videos no matter what the subject
Dear Lyle, I have a 1942 13” SB withe the single lever gear box, love it, makes switching feed speeds fast and easy…as far as issues with the 1” spindle bore, even though the spindle is 1 7/8” x8tpi, it limits what I stick in it, and collet use with my collection of 5Cs are out, glad I gave my 5C drawbar to a wonderful retired shop teacher I know who has a 5900 series Clausing up in the cold north somewhere, but I have a steady rest I can hold larger stock in chuck and work on tailstock end…best wishes, Paul in Orlando
That guy up north really likes the drawbar I’ve heard
Thanks Mr. Pete! I have a SB 9 inch A B C lathe, however it's in storage, you always discuss interesting things that no one else talks about!!
😀
I enjoy my 9" SB late. I found one with a 4.5' bed, and with my steady rest, I don't have any issues with 36" material. Love watching your channel, Mr. Pete.
Always good info I have a 16 x 72 south bend lathe built in 1975 it also has 1 3/8 bore sometimes wish it was a little larger . Thanks for the video
As a retired mechanic I’m always looking for more knowledge of the mechanics of machines. I would like to know more about the quick change boxes.
I'm a retired mechanic too, transmission guy. Always like discussions about them.
Good morning Mr. P
I have been watching your videos for years. I don’t think you have ever proposed a video idea that I didn’t find interesting. Loved the “rant” this week.
Just got my first lathe this week. I believe it is an Atlas/Craftsman 101.07403 (12x36). I only paid $106.22. It didn’t come with anything so I will have to gather various tooling and accessories. I will be watching and rewatching many of your lathe videos.
Thanks for sharing your knowledge.
Good buy on that machine
I am glad my Summit 19-4-60 has a 4.125 spindle bore. I have used it several times on 4" pipe. It can also swing 27" with the gap out...great hobby lathe !! I enjoy every video you make and have learned alot, Thanks.
That must be quite a lathe
Great Video. Schooling That Everyone Needs To Learn. Thank You For The Lesson.
Have Run Into This Issue Before. But Learned To Always Check What The Lathe Can Handle
Before Chucking Up.
I just assumed the switch to the new style was an improvement. Very interesting.!
I like the stick thing.
Kind of THE orchestra leader of the lathe room.
Chip away! My good man!
Great video Mr pete!!! Do what ever you want its all interesting to me .
I have a 1943 heavy 10 with a single tumbler gearbox.
It’s deceiving, but you actually get a lot of thread/ speed ranges.
It would make an interesting video for viewers to show how you manipulate all those speeds.
Great idea, Mr. Pete, thanks for the video as usual 👍👍
I too am interested in the differences between the gear changers. It is interesting to see how the machines evolve whether for ease of production or patent infringement avoidance!
VERY interesting, I have wondered about the spindle bores of various lathes.
Interesting video even though i knew most of that. Ive owned several south bends, have a nice little atlas now. Ran a Cincinnati at one of the places i used to work. Yes, would certainly enjoy you doing on on the differences of the gearboxes. Thanks, Mr. Pete.
"There is really no call for it...but you might find it interesting". Funny and True on both accounts. It is a truly important specification on a lathe though.
I find these sort of videos very interesting. As I have said I am a woodworker an never even seen a metal lathe. So you are educating me on these, in fact I may know more about metal lathes than some who learned to operate one brand and never explored any further. Yes I would find the gear box information very interesting.
👍👍
The history of these old machines and tools is never boring, It's such a great reminder of good times, also.
Great topic doing the QCGB ! Love your work.
Thank You Lyle, cheers from Orlando, Paul
Thanks, Paul.
I have a later model South Bend tool room lathe . One of the reasons I purchased this particular lathe is because of the large bore spindle for all the reasons stated . It is so convenient to run larger longer stock in the lathe .
Cheers Wild Bill Jeep exploring the remotest regions of northern Canada.” Never stop exploring “
👍👍👍
Your videos are always interesting no matter what the contents might be…I’m a yes for making one a video on the topic! I would also love a video on the topic of different lathe manufactures history and who made what!
I enjoy all the topics you cover. Thank you!
That was interesting. It just makes me miss my old SB Heavy 10 even more! I never have had the chance to look inside of the gear change boxes so I would be quite interested in a video that shows the difference and how they actually work. Thank you again for your hard work.
I mean where else can we find a side by side comparison of those feed boxes? Might as well be here! 😎
This is a great video as it shows a fundamental parameter of machine design that one should consider when buying a lathe. You can see here that they are not all created equal. I
think there’s one point to be added here. The rigidity of a lathe is to a large extent determined by the rigidity of the spindle. I read somewhere that this is proportional to the cube of the diameter so the toolroom lathe will be way more rigid than any of the others. This becomes critical for operations like parting off. It also affects the finish and how much of a cut you can take before it chatters. The craftsman 109 (dunlop?) I had was only an MT0 taper in the spindle nose so probably no more than a 5/16” hole and when parting the spindle behaved like a wet noodle and the tool would dig in and crash. My emco has an MT5, similar to your toolroom machine and the difference is like night and day. I would argue that spindle rigidity is almost as important as the max diameter of work you can fit and for some types of work even more important.
Thank you for that nice analysis of the spindle. For some reason, I never particularly thought about it being part of the needed rigidity. But I believe you are right.
I also think that the entire weight of a machine is a huge factor in eliminating vibration and delivery of maximum horsepower
They do make machines with huge spindles like 4 inch or 8 inch, and they are often used in the oil fields. But of course those machines weigh 20 tons.
This is the first time I hear of the patent on the old gearbox. I have one and it works great. It's a South Bend 14 1/2" and takes a 4c collet. I don't have any so I bought a 5c collet chuck and made the adapter plate. Might be the best thing I have done to it. Great video. Always learning from you. Thanks
👍👍👍
Yes please do a video on the gearboxes 👍🇺🇲👊
Thanks Mr. Pete! That's good information to know when shopping for your first lathe!
I for one would I'd like to know the differences between the two gearboxes, I have a 9 inch Boxford lathe made in England and it is a clone of the South Bend with the same gearbox. your uploads are always interesting, never boring!
Thinks for the video Mr. Pete. Some time when I am turning a larger part. I just have smaller lathes mostly. It would be great to see the change gear box comparison.
Your most interesting videos are those that interest you the most. So I leave it entirely to you.
That would be great to see the diffrence between gear boxes !
Would love having the old gear box covered. I will be restoring a lathe that has that same style box but on a 10" SB.
Hi Mr. Pete,
I do enjoy your videos and never miss one.
I frequently feel restricted by the 19mm (3/4")spindle bore on my South Bend 9 clone made in Sweden.
My solution is the 1000mm (40") between centers bed on this lathe.
Cheers, Peter
👍👍
I wish I had a 9" SBL with a 3" spindle bore! That 3/4" spindle bore was always a tad too small. The many times I wanted to shove something 1" OD thru the spindle, wasn't going to happen. Later in life, bought a 13" Sheldon lathe with a 1-1/2" spindle hole, I was in hog heaven! Now, I want a lathe that has a 3" hole in the spindle. I have run lathes with 12" hole in the spindle, no that too big for my shop. As always, thanks for sharing, Ken
👍👍
Thank you Mr Pete from KC
Had a WW2 vintage 13" SB that I bought incomplete. Missing the gearbox among other items. Ended up with the single tumbler design. Before I ever got that lathe running, I found a deal with a 1958 SB 13" (dual tumbler) and a 1959 Bridgeport, so that old SB has been slowly parted out. I've not looked back. I also have a nice 1956 9" SB Model A. I sort my projects to determine which task I do on which lathe. Sometimes the spindle bore size plays into the decision.
I totally agree with everything you said. And yes, sometimes my choice of machines is determined by the spindle size. Apparently this is not a problem for most people because this was a worthless video that no one has watched.
Love to see a video on the two gearboxes.
MJ
Mr Pete always interesting
I would love to learn more about the different gearboxes
Yes! A video on the QCGB differences would be interesting! Thanks!
Yes, I would love to know about these gearboxes! I find the technology of the machine to be integral to the enjoyment of them.
Noted!
Good morning! Thanks for the videos.
A steady rest is something all of my lathes have. It solves most of my problems with stock too large to pass through the spindle, in fact, it's solved all of them so far.
👍👍
Enjoyed the video, and yes I have run into my stock not going through the spindle on my 12 in. Atlas . I was lucky it was short enough that I could chuck it in the three jaw and use and use the steady rest to do the work. I'm sure I would enjoy seeing the differences in the quick change gear boxes if you decide to make a video on it .Southern Kentucky chiming in. 👍
Yes please! let's learn about the SB gear boxes and why they changed. One additional question - if you have a small lathe(Craftsman, SB etc.) how much stock length can "safely" protrude from the back of the lathe before you bend the bar and have a "shorts-changing" moment?!
Not much, and it totally depends on the diameter before it starts whipping
Great video Mr. Pete! I run into bore size issues all of the time, my lathe's bore is only .806 inches, but I work with a lot of 1 inch stock. The tailstock and steady rests get a lot of use. Someday when my ship comes in I'll invest in a larger lathe, lol! Yes, would like to see a video on the gearboxes. Thanks posting! 😃
As always another great video. As far as I'm concerned you could read the phone book and I would watch the video, so please do a video on the two quick change gear boxes
Thank you very much
Good morning and Greetings from the oldest town in Texas, Nacogdoches Mr. Pete. Another great video.
Yes please do compare the gear boxes
I have always used the spindle when I could to feed in longer stock to make repeative cuts and threading. Yes, the old gear box would be interesting.
Great info Mr Pete..
I have a HF Mini Lathe. The spindle bore is about 0.850". Yes there have been a few occasions where the stock was too long and the diameter too large. That's when turning gets interesting. I vote YES on a video regarding the difference between the quick change gear boxes. KOKO!
Another interesting Fourth Period Shop class, fortunately I can wear PJs to this class.
Actually, I still have mine on as well
Yes. Please talk about the defince
I would love to see you do a video on the history of the lathe change gear systems
You post it we will watch it,
and learn something or remember something, thanks 👍
Thanks Mr Pete
Im not a machinist but do enjoy learing something about the tools and their history.. the differences between the models does make sense. Thanks
I am glad you enjoyed the video.
Thanks for another great video!
Love the videos MrPete. I just adapted a South Bend two tumbler gear box like in the video to my Atlas 12-inch lathe, I got tired of changing loose gears when threading and the atlas 12-inch gearboxes are way overpriced in the resale market. The south Bend box I found on Ebay, new old stock never been on a lathe 115.00 bucks. It's a relatively simple install
That is awesome!
Your lessons are always interesting and informative. One one quick change gearboxes would be no different.
Got to have one of those machines to have that problem Mr. Pete.
Good Morning Mr. Pete!
it would be interesting to learn how that lever at the top of the old box worked to alter gear ratios.
yes on the gear boxes
I enjoyed your video, A video on gear boxes would be nice.
I like it when your numbers are still young and likes under a thousand. Then I can see them change up by one digit when I mash the button.
I have a #37 south bend. To turn long larger stock , I built a 7 inch roller steady rest.
If you do a gearbox video I’ll watch it but it wouldn’t be something I would ask for.
Have I run into spindle bore restrictions? Oh yes!! And when I got my latest lathe with a much bigger bore it was an epiphany!
The SB Toolroom lathe looks like it needs a hot date with a bucket of Evaporust. 😂
God bless and thanks for all your videos. I’ve never missed a single one.
Mike
👍👍👍
My Jet 12x36 has a
1 3/8 bore. I believe the factory would have labeled it a tool room lathe since it has hardened ways, a coolant sump with pump and a way to align the head axially with the bed. It has the D1-4 cam lock spindle as well.
Thx for the vid. Mr. Pete.
i started with a 9" SB, but the small spindle bore really limited what i could do. When i got my SB heavy 10 with the 1 3/8 " bore, that really opened up a world of possibilities!
👍👍
Discussing quick change gear boxes on these small machines would be interesting to me.
Spindle bore size limitations frusrate me, and this limitation partially drove me to invest in larger machines, LeBlond, Elliott and American Pacemaker.
Although much larger my Amercan Pacemaker only has an MT4 tailstock, while the smaller LeBlond has an MT5 tailstock. The Elliott, only a 15" machine, probably has the largest spindle bore of my machines, and was amo g the most attractive feature that drove my purchase. When I purchased my little Craftsman (Atlas), my first metal lathe, an early job required chucking 1/2" BI. It wouldn't go through the spindle bore, which is nominally 3/4".
My wood lathes all have small spindle bores. I understand that wood turners work mostly between centers, face plates, or short jaw chucks. Having machining background, I have frequently desired to chuck on long stock that won't fit the small wood lathe bores. I detest getting wood chips on my oily metal machines, but I have yielded in the past. The metal lathe really assisted this novice wood turner with rigid and predictable tool presentation! I own 3 wood lathes and high-end tooling, but quality machines and tooling hasn't vastly improved my limited wood turning skills. I am convinced that to be an accomplished wood turner, you should dispose of every other shop machine besides a good bandsaw and solely focus on wood turning. Wood turning is a lot of fun, but it requires time and dedication at the lathe to master even basic skills.
Wood turning is pretty much an art
Hi Lyle,
Not boring at all. Would like to heat about the machines made before I was born. Stay safe.
Thanks Mr Pete. I would be interested in knowing more about the single tumblers. I have a SB 9" that is made on the A, B, C model platform. It is the one that offers the most options. It has the signal tumbler and the 5C size headstock spindle. I'm not sure of it's age but I'd say no newer than 1940's. I also have a heavy 10 tool room lathe. It has cross X webbing in the bed where the 9" has blocks cast between the bed sides. Thanks again and enjoy your weekend.
👍👍
Good morning Mr. Pete. I passed on a SB with the old style single tumbler gearbox because we could not get it to shift out of whatever position it was set. Looking back, I can't really tell if it was a 10" or possibly a 9" tool room lathe. So, yes, I would be interested if you pursue it further. I started with a SB 9" with a 3/4" bore and now have a Clausing 4900 with a 1.062" bore. So far I have not been hindered by the small bore diameter.
Spindle bores!! Ohhhhh yeahhh!!
If you don’t cover it no one else will - always interesting
Gearbox history sounds interesting. I would also like to see the inside with an explanation of how they work.
yes please
It is an important feature to know. I have two nice lathes, but neither has a bore big enough for rifle barrels, fortunately one is long enough to compensate, but that increases set up times, and I still have to do a less than ideal kludge for chambering.
Hi Mr P, don't fret, it's all of interest.
I think a video about the gear boxes would be very interesting and informative.
Great info, thanks
Interested in the gear boxes!
Comparison of the drive gear box designs would be interesting to me.
Thank you.
Would love to see the inside workings of the quick change gear boxes and how they work. I understand the basics, however seeing how it works would be great... My Harrison 13" lathe has a 1 9/16" bore which accommodates most stock I turn.
👍👍
Please do a video on the different gearbox designs. I believe it was “basement shop guy” that has a video on how he prefers the single tumbler design as you can shift the top tumbler on the fly while going to change speeds as the gear design meshes. I know that there are also different oil gallery designs on the single tumbler gearbox(different versions of single tumbler). With the latter design being a much improved oil gallery and tube dropping oil directly on the gears. I had to replace a gearbox and could see the difference between the two oil gallery designs of the single tumbler gearbox.
I would love to hear/see the comparison of the two quick-change boxes. Especially if you could show the "underside" and explain the differences in how each works.
Do the quick change gearbox rundown please!