COMPARE LATHE SPINDLE BORE SIZES

[@cyoung4290]

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!

[@mrpete222]

👍👍

[@emerycreek8016]

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!

[@mrpete222]

👍👍

[@baconpizza1239]

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!!

[@mrpete222]

😀

[@ypaulbrown]

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

[@mrpete222]

That guy up north really likes the drawbar I’ve heard

[@lindsaybrown7357]

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.

[@mikejenson9823]

Mr. Pete, the information you share is invaluable, never boring, and always appreciated.

[@mrpete222]

Glad you enjoy the videos!

[@keithschwartz7318]

Good morning Lyle. Your posts are never boring. Have a good week.

[@lroyson]

I really like seeing and hearing the details of these old machines. Keep it coming. Thanks.

[@johnmortland1558]

I always enjoy the early Saturday videos no matter what the subject

[@OleGramps53]

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.

[@hickorysplitter9185]

I'm a retired mechanic too, transmission guy. Always like discussions about them.

[@johnb5519]

The history of these old machines and tools is never boring, It's such a great reminder of good times, also.

[@bikerbenz13]

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.

[@mrpete222]

Good buy on that machine

[@dennisemme2456]

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.

[@bcbloc02]

I mean where else can we find a side by side comparison of those feed boxes? Might as well be here! 😎

[@JohnM-yk4yz]

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

[@rexmyers991]

I just assumed the switch to the new style was an improvement. Very interesting.!

[@nomercadies]

I like the stick thing. Kind of THE orchestra leader of the lathe room. Chip away! My good man!

[@edl5074]

Great video Mr pete!!! Do what ever you want its all interesting to me .

[@TheAyrCaveShop]

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 👍👍

[@danbreyfogle8486]

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.

[@mrpete222]

👍👍

[@laurentruesdale4088]

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.

[@noneofabove5586]

I enjoy all the topics you cover. Thank you!

[@4ourE]

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!

[@williamwilcox-rd7cx]

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 “

[@mrpete222]

👍👍👍

[@steveforbes8287]

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.

[@jong204]

VERY interesting, I have wondered about the spindle bores of various lathes.

[@johnfriend240]

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.

[@mrpete222]

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.

[@JourneymanRandy]

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

[@mrpete222]

👍👍👍

[@jamesreed6121]

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!

[@daveharriman2756]

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!

[@peterbystrom9726]

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

[@mrpete222]

👍👍

[@alfreimont1830]

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.

[@marionstorm9004]

Thanks Mr. Pete! That's good information to know when shopping for your first lathe!

[@JamesOsborneJr]

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. 👍

[@jscott8695]

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! 😃

[@Daledavispratt]

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.

[@mrpete222]

👍👍

[@user-oi8tg3dq7t]

Good morning and Greetings from the oldest town in Texas, Nacogdoches Mr. Pete. Another great video.

[@4GSR]

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

[@mrpete222]

👍👍

[@stevenpressley5956]

Yes please do a video on the gearboxes 👍🇺🇲👊

[@mikes1345]

Im not a machinist but do enjoy learing something about the tools and their history.. the differences between the models does make sense. Thanks

[@mrpete222]

I am glad you enjoyed the video.

[@johncloar1692]

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.

[@RodneyHayes-d3y]

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

[@mrpete222]

That is awesome!

[@ArnoldMinnich]

Your lessons are always interesting and informative. One one quick change gearboxes would be no different.

[@randyshoquist7726]

My Taiwanese 10 x 24 lathe has a 26mm spindle bore and a M4 taper, so it's too small for a 5C drawtube. I was about to undertake making a face mounted 5C collet closer when serendipity struck. At the time I was taking a metal shop class for adults at a high school shop on Wednesday evenings. (The class was administered by the local community college. For fifteen years I spent my Wednesday evenings at Franklin HS. It was a fantastic resource.) One evening I stepped into the teacher's office and spied a box on the floor next to his desk containing several 4C collets. I asked the teacher, "What's the deal with these collets?" He said, "I don't know. Somebody donated them. I have no use for them." I said, "Well, I do! Can I buy them from you?" He replied, "Well, I can't sell them, but... how do I put this?... Have I ever told you how much I like Yukon Jack?" So for the price of a bottle of booze I got $200 worth of lathe tooling!

[@mrpete222]

Good deal, I think they are kind of hard to find

[@mgmcneeley]

I would love to learn more about the different gearboxes

[@G1951-w1y]

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.

[@richardlafleur3974]

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

[@mrpete222]

Thank you very much

[@feathers352]

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.

[@DonDegidio]

Hi Lyle, Not boring at all. Would like to heat about the machines made before I was born. Stay safe.

[@Siskiyous6]

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.

[@duron700r]

Certainly, a look into the why's and wherefore's of quick change boxes would be welcomed by this listener. Spindle bore size must've been a long term headache for all lathe builders. Users saying the spindle bore is too small? Without charging thru my books, SB 12x6 (4) has a 3/4 bore maybe. 1911. 1928 SB 9x4 has the same I think. The 90's 7x14 chinaman has about the same, maybe a skoche larger. Big bore for a little stinker. Gosh, if I see it right, they're still increasing spindle bore size. ? Long winded, please excuse. Neat vid!

[@mrpete222]

👍👍

[@jamesbaillargeon7404]

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!

[@mrpete222]

👍👍

[@ellieprice363]

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.

[@paulclithero1822]

Yes, I would love to know about these gearboxes! I find the technology of the machine to be integral to the enjoyment of them.

[@mrpete222]

Noted!

[@QuickStart-wpk]

Your most interesting videos are those that interest you the most. So I leave it entirely to you.

[@ypaulbrown]

Thank You Lyle, cheers from Orlando, Paul

[@mrpete222]

Thanks, Paul.

[@jeff1176]

Those of us with SB 11" lathes still can't even get a reasonable mention. Lol My 11 has a 7/8 spindle bore and still use 5C collet. No draw bar, chuck only. Thanks for the video. There are many differences between a 9/10 and my lathe. They look almost identical, but they are even close.

[@mrpete222]

Thanks, I am not familiar with the 11 inch machine

[@JuddStiff]

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.

[@paulhunt598]

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.

[@mrpete222]

Wood turning is pretty much an art

[@walterplummer3808]

Good morning! Thanks for the videos.

[@mikebarton3218]

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

[@mrpete222]

👍👍👍

[@tuffymartinez]

Thank You Lyle Peterson.... Having worked on many different lathes during 40+ years on the job. I have encountered new & worn out bed ways. Always bothered me - Why didn't all those different manufactures design the bed ways so that it could be flipped 180 degrees when it is worn out. I would think it would be a fairly simple matter? After 50 years of work, flip, and than the unworn end has a fresh new ways to last with accuracy. ??? TM

[@mrpete222]

They wanted them to wear out so you would buy a new one

[@goldprogoldpro7809]

it would be interesting to learn how that lever at the top of the old box worked to alter gear ratios.

[@richardbrobeck2384]

That would be great to see the diffrence between gear boxes !

[@buckwheat7673]

Interesting to know South Bend changed gear box ( which I have ) to double tumbler because of royalty rights and not because the single tumbler with the lever is inferior. I just assumed they upgraded.

[@KarlSiefert]

The history and use of the quick-change gearbox would be very welcome. Please take the time to do this video. Thanks

[@dannyl2598]

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.

[@mrpete222]

👍👍

[@markgeorge3960]

Yes! A video on the QCGB differences would be interesting! Thanks!

[@tractor6574]

Mr. Pete, yes can you give us more information about those quick change gear boxes. I always wondered who was the first lathe company to use one and what year did they start coming out. I have noticed that Atlas, South bend, and Logan' look similar.

[@bestfriendhank1424]

Got to have one of those machines to have that problem Mr. Pete.

[@bradmaynard1559]

I have a #37 south bend. To turn long larger stock , I built a 7 inch roller steady rest.

[@JetIgniter2k2]

Gearbox history sounds interesting. I would also like to see the inside with an explanation of how they work.

[@glennking8206]

Thank you Mr Pete from KC

[@vitesseguy]

Thanks for another great video!

[@frankpresley494]

I enjoyed your video, A video on gear boxes would be nice.

[@wihardy]

I would love to see you do a video on the history of the lathe change gear systems

[@jasonpeters3228]

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.

[@Ed_Stoddard]

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.

[@mrpete222]

👍👍

[@kentuckytrapper780]

Great info Mr Pete..

[@gregmarsen8536]

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.

[@markstone6368]

Love to see a video on the two gearboxes. MJ

[@Wayne3544]

Interested in the gear boxes!

[@theseldomseenkid6251]

Viewers ask yourself this: How did Mr. Pete, move all those lathes so he can show them to us side by side? That thar is old guy strength. I heard he dragged them two at a time around the shop and moved the mill out of the way by picking it up by and walking it 20 feet to temporarily get it out of the way. Chuck Norris said he would visit later to get some strength tips.

[@mrpete222]

Actually, you are correct. I have been shuffling these three or four machines around for quite sometime. Give me a prybar and a fulcrum and I can move just about anything.

[@kurtdietrich5421]

I think a video about the gear boxes would be very interesting and informative.

[@brucemecham3406]

Another interesting Fourth Period Shop class, fortunately I can wear PJs to this class.

[@mrpete222]

Actually, I still have mine on as well

[@brianroberts4349]

Please do explain the differences between the two gear boxes!

[@johnquinn3899]

Good morning Mr Pete. My SB heavy 10 is equipped with a 5C collet holder that has a built in hand-wheel type holder - don’t know its name. Thanks John

[@jpackard2723]

You post it we will watch it, and learn something or remember something, thanks 👍

[@dale1956ties]

Good Morning Mr. Pete!

[@TheBradmarriner]

Yes. Please talk about the defince

[@oldfortyfive-tt1ir]

yes on the gear boxes

[@keithpattison6763]

Hello Lyle, May Hercus 9" Model A has a 3/4" spindle bore, like your 9" Southbend and is a bit restrictive. I volunteer one day a week, at our Railway Museum, in the workshop and we have a reasonable Tiawanese lathe, with a 2" spindle bore, that I can use for anything too big for my lathe, works out fine.

[@mrpete222]

👍👍

[@MatthewFisher-th1gg]

Yes please do compare the gear boxes

[@KyleKnepley]

The history behind the gear boxes would be interesting. I’ve been told the single tumbler is a little more robust than the dual.

[@raywilson9450]

I'd be interested in knowing if the old style gearbox has any drawbacks compared to the new one. I've got a Heavy 10 with the old style. And an SB 13 with the new style gearbox. Seems the old style is a bit more fiddly to get the gears meshed when transitioning from one setting to another. But that could be maintenance or condition related. As an aside, perhaps the presence of the new style gearbox is a fairly reliable indicator as to the lathe having flame hardened ways, helpful to the buyer shopping for lathe scrolling thru internet listings. Cheers!

[@richardrogers567]

Thanks Mr Pete

[@Warped65er]

Thx for the vid. Mr. Pete.

[@mikekorth1733]

More info about the quick change gearbox would be great. I'm wondering if I can adapt one to my 1914 SB

[@ibiufos]

I originally started with a Hercus 9" and now I've upsized to a lathe with a 12" 50mm bore and I also have 60mm bore 14" lathe but find I use the smaller of the two.

[@mrpete222]

👍👍

[@dl2122d]

yes I have had the case where my spindle bore was not large enough for the work I had, even through my spindle bore is 1-3/8".