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Lathe - Gear Plate/Chart

 
 

 

 
 
Refinishing QCGB data plate (Jun 7, 2002) SB reproduction info plates (Jul 30, 2003)
Data Plate Rivets (Jun 14, 2002) Appropriate 9A info plates? (Jul 31, 2003)
Brass Drive Screws (Nov 16, 2002) Model B change gear plate (Nov 13, 2003)
New Plate on my Gearbox (May 4, 2003) Brass Plate Refinishing (Nov 17, 2004)
9in model C index plate (Jun 14, 2003) 16" Thread Chart (Feb 6, 2005)
Gear Chart Plates (Jun 23, 2003) Wall gear chart (Mar 7, 2005)
 
Refinishing QCGB data plate
Has anyone tried, or had any luck, restoring a worn data plate on the QC gear box? Mine is legible, but I'm wondering if there's a way to add paint/colorant/whatever in the right spots to restore it to it's original condition. Jeff (4494)
I accidentally got some zip strip paint remover on my data plate. I thought I was going to have a blank plate, but to my surprise it took off all of the layers of paint that had been slopped onto it over the years and left the red and black original. It cleaned up the brass, too. I ended up treating all of the plates with the same stuff. Glen (4495)
Data Plate Rivets
I need to remove the data plate from the QC gear box on my 13" SB so I can restore it. Has anyone done this before? I'd like to get some input before I proceed on my own. At this point I'm considering either grinding off the heads or drilling them out. It would be nice to preserve the rivets, but I'm not sure if that's possible. Jeff (4577)
Just a personal opinion but I restore a lot of machines but I never remove a plate. Once you have do so what is there to authenticate the machine? If you absolutely have to do this then drill out the heads and remove the rivet body. Tap the holes for button head cap screws of the smallest size you can. A very small SS button head cap screw looks almost like a rivet. Of course you could also put new pop rivets in. A tool to do it isn't that expensive. But think about this before you do it. There is enough mix and match equipment around without making another ambiguity. A piece of masking tape is a whole lot easier. Yasmiin (4578)
Most bolt shops carry the drive screw type rivets like the originals. I buy them in all different sizes and have used them to reattach name plates. If you can't get to the back side to knock out the originals or if the holes don't go all the way through, you can do as mentioned and carefully drill off the heads. I usually grind a flat on the head and center punch so I can drill dead center until the head pops off. The remove the plate and drill the rest of the rivet out. Usually the same size drive rivet will hold fine. If not you can go to the next larger size. If you don't have a local bolt shop you can probably order them from McMaster-Carr or other distributor. Skip (4581)
Jeff, I have removed and replaced these on several machines. On late manufacture machines, the rivets were of just "pop" rivets. Earlier lathes used rivets of the "drive" type. Pop rivets are easy to drill out and replace. The drive rivets are solid and have a pronounced domed head. They can be very hard and resist drilling. One of two methods used to remove these is to gently tap the rivet sideways, back-and-forth until they loosen some and then grip them with a good set of pliers and pull them out (twisting them slightly counter-clockwise as you pull). The other method is to take a Dremel tool and grind a slot for a screw driver in the head but this requires a steady hand and nerves. If you choose this method, I would make a protective piece to cover the plate. A piece of heavy shim stock with a hole just large enough to permit the rivet head to pass through would work. Then grind the slot and use the screwdriver and unscrew the rivet. I say "unscrew" because the shank of the rivet has a right-hand spiral knurl that grips the base metal and holds the rivet in. You can get replacement rivets from McMaster-Carr Supply Co. Webb (4582)
Jeff; I'm answering this before replying to your off list email - I'm not ignoring you, I just had to do an emergency run to a data center this week! In almost every case, the holes these screw style rivets drive into are accessible from the rear of the part. I use an automatic center punch to drift these out with darn near a 100 percent success rate. The toughest thing on old grungy parts is finding the darn small hole that will be packed with old paint and hardened grease/oil. Once you know they are there though, they usually show up with a bit of looking. Put a hand over the face of the plate while popping the rivets out, the ones that are slightly loose like to spring across the shop, and they are hard to find once they hit the floor! Stan (4583)
Jeff, I've had the same experience as Stan. In the few instances that I couldn't find the back side of the rivet, I've been able to twist them out from the front with a large hemostat. Flea markets yield many interesting tools. Glen (4589)
So the rivets have a knurled spiral shank? I assume they were designed to be pounded in - I wonder why they'd bother with the spiral knurl? Anyhow, I think I better understand what they are, and I guess I'll first try to find the back of the hole they were inserted into. Yasmiin - I agree that the plates provide identity to the machine, but my intention is to re-paint and clean up the original and then put it back. Maybe I'll try turning some drive pins on my little lathe. Jeff (4592)
I guess my biggest concern is plates with things like serial numbers and specs. I do some really old machines and if a plate has been tampered with I become concerned that the machine is what the plate says it is. These old machines (1880 to 1940 ) can be very hard to identify. Many builders were using the same castings so you get a head stock and then you try to identify it. It can be a real challenge. Of course some of these manufacturers didn't put any identification at all on their machines. I just got a bunch of stuff that was supposedly one manufacturer and so far I have identified three and I still have some mystery parts. Yasmiin (4596)
Brass Drive Screws
Where can you get brass drive screws to attach thread chart diagram and oiling chart to side cover of SB lathe? (7307)
 http://www.mcmaster.com/pdf/108/3093.pdf (7308)
Check Small Parts http://www.smallparts.com  and Reid Tools http://www.reidtool.com  Fred (7309)
I do not like to spend money on anything I can make. Since you have a lathe, find an old piece of brass and presto, before you can write that check out you can have them made! Tom (7337)
New Plate on my Gearbox
I bought on ebay one of the reproduction plates for on the Gearbox it looks great on My SB9 A But what kind of casting is the gearbox made off ? I had to drill 4 holes for the pins (the old ones are still in the casting without head. With a normal HSS drills you cant bore a hole in it. Finally I get the job done with a mill from a dentist at very low speed. (10770)
The gearbox case is cast iron. The front face of the casting has been sanded smooth by the factory, so that should reduce the chance that you'll drill into a hard spot. The casting should not be very difficult to drill. The "pins" are typically #4 drive screws. Drive screws are very hard - drilling them is not the easy way to remove them. The drive pins in the gear box are driven into blind holes, so the best option is to try to lift the head a little with a very sharp chisel (I used a #17 X-acto blade). When the head has moved up maybe .5mm, you can usually grab the drive screw with locking pliers and twist it out (drive screws have RH flutes). (10794)
9in model C index plate
I have an old model c and I need a index plate for it. I am trying to cut 10 threads and can't find any information on what gears to use. My gear bracket is a straight one. Roy (11994)
When you say the gear bracket is "a straight one" do you mean it has only one arm, as opposed to two?. If so, this could be a model 405Y from about 1934. The threading chart is different for that model. for a 10 pitch thread it suggests the the lead screw gear is a 30 tooth gear with no gear reductions or advantaged in between. The spindle is A 24 tooth. The lead screw is 8. 30/24*8 = 10. The later systems with reversing gears would have a 32 tooth stud gear, with a 40 tooth screw gear and an 80 tooth idler. 40/32*8 = 10 Jim B. (11999)
James, you hit the nail right on the head, Now I need a 30 tooth gear. Do you know where I could find one? Roy (12000)
Gear Chart Plates
I just wanted to remind everyone that Randy Phillips has the new Gear Chart Plates available for the SB lathes, I purchased one a while back and I cannot tell any difference from the originals, nice item for those that are restoring Clint (12241)
How do we get in touch with Randy to purchase one of these? Eric (12245)
Here is a link to an ebay listing he has, email him and let him know that you heard about them on the SB group http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=2540857517category=1272rd=1 Clint (12254)
SB reproduction info plates
I see there is a seller on Ebay, who sells South Bend reproduction lathe info plates. He has a listing now, item # 2548434139. Anyone on the list every buy one of these? Does this guy have a web site? W. Sharp (13052)
W. Sharp That is Randy Phillips's. Yes, I have bought some and they are very nice, looks original. He is also a god dependable seller I do not know of a web site for him but he will answer your emails to him. Clint (13062)
I purchased and just received the lube plate and the bearing adjustment plate for my 10L and they are GREAT! I don't think you could tell these from factory originals. Dennis (13067)
William, I have no experience with Randy's plates, but from what I hear they look good. If you will search the archived Posts, Randy tells in detail about how he had them made and how they differ, ever so slightly, from the originals. I think his ID here is the same as on Ebay(dt38k). (13069)
William, Well I decided it wasn't very mannerly of me to tell you about the post but not put any effort into finding it for a fellow South Bend owner, so I got my Lazy a$$ up and done a couple of searches and what do you know, found it rather quickly. Go to post #8697 and I think you will find very good narrative on these plates. (13070)
I recently bought 2 plates from Randy. Quick service, Plates appear to be excellent quality. As I can't read half the numbers on my original plates a big improvement. I sent Randy an email in the ebay ask seller a question with my email to make contact.(13075)
Appropriate 9A info plates?
I am interested in getting the appropriate info plates from Randy Phillip's, for my South Bend 9" model A, 3' bed, with quick change gear box. I just picked it up this past Monday, so I haven't had a chance to get the correct year of production info etc. on it, from the serial #. Anyone know what are the appropriate info plate/s for this model lathe? I guess that I would just ask for plates for the model 9A? W. Sharp (13076)
W. Sharp yes, the QC plate would be the same for the 9" Model A Clint (13085)
Model B change gear plate
Anyone know of a source for a GOOD CLEAR photograph of a model B change gear plate? Most photo reproductions in manuals are not very clear. Randy (14957)
There is a nice clear picture in the how to run a lathe book. 56th edition, page 73. dennis (14958)
Chuck I believe that the model B plate is the same as the Model C Clint (14959)
My model B is 1942 vintage and the plate is really hard to read. I have a copy of the page from the book and that's what I use to set up the gears on the machine. RC (14961)
I have one plate that is in very good condition, for making a copy. I am not sure which it is, Clint Driggars could be right, about the B and C charts being the same. It reads at the top, 9" workshop south bend lathe There are 4 gear threads per inch columns on the left and 4 pictures of the different gear selections to the stud gear on the right. It goes from 4-480 threads per inch. The last left column starts with 160, some plates, I understand, only showed that number though, but mine shows all 5 from 160 to 480. Is this the right one? If I could get 20 solid requests for this plate, I would have this re-produced. It would take about 4-5 weeks. The cost would be 35 dollars each plus 3.50 for insured freight. Just let me know at peep38k(at)mchsi(dot)com and if I get 20 orders, I will email each person to let them know they are being made and an approximate time that they would be ready. Randy (14962)
I bought two plates from Randy. (model A quick change gear box and the Lube plate for the same lathe). The reproduction is of excellent quality. Very nice for those re-building a lathe. Guy (14965)
B and C ARE NOT THE SAME! B has cross feed, C does not. They use SIMILAR change gear setups for threads. C plate will not tell you cross feeds. 80T configurations are not the same for B and C. look in a HTRAL book folks. dennis (14966)
Dennis, since you seem to be the only one so far that knows the difference in these two charts, can you tell by my description, which one it is that I have? I would guess that most of us know that a C does not have cross feed and that the A and B models do. You might explain to the group how these two charts differ from one another. I think we are all willing to learn something new. Randy (14967)
Randy/Chuck I have a model B lathe and the change gear setup used is the same as the Model C. Clint (14968)
My edition 56 and 50 ( I have collected 4 different editions ) of How to Run a lathe has both the c and b plates. They are different because they show the cross feed and long feed based on using the apron not the half nuts. In addition the gear set for a b is slightly different than a c as the b can get the finer feeds using the apron and the c must use the change gears. I can easily scan them in, just let me know if you want a copy or where to upload them. (14969)
Steve I reckon you are correct about the feed part, but as far as threading they are the same I would like to see a plate that shows the gearing for the feeds I never thought about that part of it. Clint (14971)
I finally found a "reasonable" reproduction of a Model B Chart for Threads and Feeds on the Web Site www.lathes.co.uk/southbend9-inch/page6.html . This chart ends at 160 TPI. I doubt that it would be suitable for reproducing good plates. In another OLD catalog, I found the Model B and C charts side-by-side. They are different as some of the group have noted. In particular, the Figures for gear set-up are different in Figure 4. This is probably due to the feeds issue between the powered apron and the C Model which has to use the clasp nuts. Randy, if anyone comes up with a good Model B chart, I would pay for one of your plates. Chuck (14972)
If anyone would like a scan of both the b and c plates let me know. As an aside the 54x8 compound gear is specific to a model C. (14973)
Randy I would want one also. Clint (14979)
Steve Thanks for the scans, and as Steve had previously stated, there is a difference in the plates, the difference being at the larger tpi ranges for the power feeds Now, I need a model B plate! Clint (14980)
Just let me know at peep38k(at)mchsi(dot)com and if I get 20 orders U did good. DK (14981)
OK I hope that there are at least 18 more of us that can use the Model B plates? Clint (14982)
Great idea! Why not let's start a folder, where photos/scans of the various gear change plates can be placed. There seem to be several. Then we could all refer to it for info. An accurate caption would be vital, to describe which models they are from. We could put them in the Yahoogroups southbendlathe photos section, or maybe in SouthBendLathePix (also in Yahoogroups). Jordan (14983)
Jordon I just looked in the SB group photos and there are already several pics of plates, but they are done individually, I did not see one for the model B Maybe we should make a folder for them but it would have to be done in the SB pix group because of space left I will go make the folder, but it would be up to others to post the scans that have them Clint (14984)
OK, I have created the Album for "gear oil plates for all SB lathes" in the SB pix group So anyone with pix/scans of the gear oil plates for any SB lathes, please post them Clint (14985)
Thanks to Steve Obert, I now have good scans of an B and C gear chart. His C chart is different than mine in the layout, his says 9" model C lathe, where mine reads 9" workshop south bend lathe in red, but the numbers are the same except in the last column where mine shows 5, from 160 to 480 and his shows one at 160. Here is what I need from the group. Since south bend made different ones, we need to decide if Steve's scan's will work for everyone. I also need to know if the plates you guys want are all one color, or are they a two tone with some red at the top and all black where the numbers and diagrams are. Mine has red on the top and bottom boarders and his scans only have a boarder at the top. I have forwarded these scans to my nameplate factory with the measurements from my model C plate for width, height and hole centers. I gave them 3-3/8" wide with hole centers at 3-3/16", and 6-1/2" tall with 6-5/16" hole centers. If someone has something different, I need to know this soon. Once we agree on the plate, which will be brass and confirm the dimensions and style of design, I can get this ball rolling. I presently have 3 requests for the C model and 4 for the B model. I'll do whatever I can to help out but you guys have the final decision on what you want. I don't have either of this style, except for some parts, so I don't need these but will do my best to get this done. Most everything I have are A models. The ball is now in your court. Randy (14988)
Steve, I would like a scan of the "C" plate. Bob (14989)
Randy I think I would say to go with the design that yours show, also I think using the workshop would be more helpful, since it shows more info Others opinion? Clint (14990)
Randy, The plate and hole dimensions you state in this message conform to the holes in my gear cover. Hope you can make these. Chuck (14993)
Clint I'm thinking the same thing. Instead of having a B and C chart, could south bend have went to this 9" workshop plate, like the one I have? It would seem that the most important part is having all the numbers for the threads per inch and the mating gear combinations. With this, the 9" workshop plate I have should serve for both models in one. What purpose is served having all the numbers for the revolution of the spindle? Is this really necessary? I'm not that smart to have that answer. If you compare the two scans that Steve has shown, the threads per inch numbers match right across the board with each other and my plate. My chart goes farther to show the 160,192, 240, 320, and the 480, in the last column which the other two do not. This seems like these would be very practical to have. Does anyone have a picture of this plate that can be scanned and shared with the group? In the B chart scan from Steve, it shows two columns with several numbers on the right side of the left columns for cross feeds and long feeds, 6 in fig. 2, 19 in fig. 3, and 1 in fig. 4. In the C chart in the same area, it reads feeds per REV. only and there are 9 in fig. 3 and 5 in fig. 4. I'm going to call the nameplate factory and tell them to put this on hold until we can all agree on whether this plate can satisfy everyone. Let's all get together and try to get on the same page. Randy(15001)
Randy Where the C plate is showing the feed speeds, that is feed speed using the leadscrew, one the B plate, it is speeds for using the power feed gearing, so there is a difference in the feed charts As long as a chart shows the power feed gearing speeds with the thread cutting gearing, that would be needed for the B plates, for the C plates, the leadscrew feed along with the thread cutting gearing would be necessary I had never thought of the power feed charts being on the threading plates till Steve and someone else brought it up, all this time, I had assumed the C and B plates would have been the same So, If the plate you are speaking of with the extra gearing/feed tables shown is for power feed gearing, that would be great, if it is just for leadscrew feed, then it would nor be original for the b model Help! someone else jump in on this subject? Steve? Clint (15002)
Clint I just down loaded a picture of my plate in the photo section If I'm understanding you right, my plate must be from a C model then, since these numbers match Steve's scan. Now here's one for you. In the left column of his scan in fig. 4, the feed numbers are .0063, .0052, .0042, .0031, and .0021. On my plate, they are .0062, .0052, .0041, .0031, and .0021. What's up with that? Does this also mean that the B model cannot cut threads per inch past 160, and the C model can? All I can say is welcome to the south bend guessing game. Just another one of the amazing mysteries of these combinations of machines. Randy (15003)
Clint In case this might help, the catalog number stamped on this plate is 415-ZA I notice Steve's scans have no place to stamp a number or the bed length. Is your plate one color on brass, or is it similar to mine in two colors? Randy (15004)
The ball is now in your court. Randy (15005)
Randy I think it is for the power feed? Shoot, you have me on that one because with the B model, threading is exactly like with the C, just the power feeds are added because the power feed is thru a different gear setup, so it is showing us if we have our gear train set to cut a certain TPI, it shows what the power feed speed is, or it could mean that by using the power feed with a certain gear set up for threading, we actually get more options for threading? the added gears in the saddle using power feed adds a little more fine threading??? I am no expert at all on the model B, as I have just completed my conversion to a model B, originally, I had a C and an A, now I have a B and A I know one thing, on the highest type setting on the B and using the power feed, it is one slow muther! I can go have supper during a 2" long turning session! Much slower movement than I get on the A highest tpi setting I really love running the B model for turning Hopefully, some others can jump in on this topic and we can get things settled to what we need It is getting to sound like both plates are needed between the C and B models? I would think they would pretty much look the same with the additional speeds added Clint (15006)
Randy I do not have a B plate, but my C plates are two color, I think that is the way I remember them, remember, I no longer run the C but have several C and A gear covers. Clint (15007)
The ball is now in your court. Thanks for your input, Randy (15008)
The actual plate on my model C is different from the scans it is labeled "screw threads and power feeds English lead screw 8 threads per inch" it also has the catalog # bed length and "Chart no. 7" on it. It is 2 color red and black on a brass plate. It stops at 160 threads per inch but lists feeds to .0021. The lathe was made in 1953 and is all original as far as I know, I have had it for over 30 years. The model B did not come with the 54 x 18 compound gear. The power feed on the apron will give the finer feeds that the 54 x18 gives on the C. That being said adding a 54 x 18 to a B will let you do REALLY fine feed rates. Perhaps if the year of the lathe was noted on the scans of the plates we would be able to see some pattern or evolution. It would be interesting anyway. (15015)
Just wondering, after the weekend, where we stand on having the plates made for a model B. Earlier last week it looked like Randy was moving forward on this, however there was some question of Model B VS Workshop Model B. Arn't they the same except for the title? Chuck (15036)
Brass Plate Refinishing
Does anyone know of a method of refinishing the brass nameplates? Mine completely lost all their paint in the cleaning process. I've tried painting one and then gently sanding on 400 grit to remove the paint from the high spots but the plate is not flat enough to get a nice job and I'm afraid that if I get too aggressive I'll lose the raised lettering. Anybody got any experience or ideas? Ed in Florida (22036)
I did a plate on a tractor by putting 3 layers of cloth over a piece of soft wood and wiping the raised letters just after painting. You may have to do some touchup with a small model brush and/or toothpicks. If you need a new nameplate check with Randy. Search back through the archives or look for him on Ebay. JP (22037)
16" Thread Chart
Does anyone out there knows a reasonable source for a Thread Chart Plate for a SB16 with Double tumbler gearbox. If no one has any ideas, can someone shoot me a good digital photo of theirs? I'm tired of guessing what pitch I'm in. Jim (24913)
Try Ebay Seller DT38K. Randy is his name. He has several reproduction plates for sale on Ebay regularly and although I have not purchased one from him they look real good. I also think he is an active member of this group but due to work schedule he posts quite infrequently. I have purchased a complete 13" Taper Attachment from him privately and his service was excellent. Ron (24914)
Wall gear chart
Thanks to davethegundoctor I have added a metric transposing chart to my CAD drawn wall chart. The chart had the double lever quick change chart in large lettering to make it easy to find the settings you need to cut any of 48 different threads per inch. The numbers came from a Southbend 9" model A but I believe they are the same as any double lever quick change chart that does not have 27 TPI on it. Each 18"X24" sheet has a Large quick change chart to hang on the wall behind the lathe, a small quick change chart for the office, and a large Metric Transposing Gear Chart for the wall. The price is $10. for one printed on velum or $20. for one printed on Mylar, and I will pay for shipping. If interested, E-mail me at garyphansen@juno.com Gary (25805)
I got my chart from Gary yesterday. It is just great. I made a little suggest which was to put his name on it. I think you guys will like these. Maybe down the road he could do charts for other South Bend lathes that you have. You sure can see these. David (25855)
 
     
 

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