For the last couple of years I’ve been searching for the perfect zig-zag sewing machine that can be treadled. I haven’t found one that meets all of my requirements, but I’ve found several that come close. My Singer 328K is all metal, it makes most of the stitches I need, and it is easy to treadle, but it skips stitches on stretchy knit fabrics. My Janome 712T does well on knit fabrics but is hard to treadle and has plastic parts that I worry about breaking when I sew thick fabric. I found a Fleetwood F-5000 free-arm machine that I was able to convert to treadle. It is all-metal, handles knits well, and is easy to treadle, but only does straight stitch and zig-zag. Also I prefer to sew on a flat bed machine most of the time.
In the back of my mind I kept wanting a Singer 411G. I knew it wouldn’t be quite what I wanted, since it doesn’t do a 3-step zig-zag (it’s multi zig-zag stitch is 4-step), and it is almost impossible to find one with a treadle balance wheel. However, I know some people have managed to treadle the electric version by shimming out the balance wheel, using a string or spinning wheel drive band instead of a leather belt, or cutting a groove in the balance wheel, so I figured that with some effort I should be able to treadle the electric version. And as for the 3-step zig-zag, I think I can design a new cam and have it 3D printed [which I did].
I finally decided to just stop buying fabric for a while so I could save up for a 411G. They are fairly rare, especially in the US where they were never sold, so I had to buy one on ebay, which I hate doing. It survived being shipped, but some idiot (probably the seller, who claims to be an expert at servicing sewing machines) had squirted massive amounts of grease in most of the places that should be lubricated with sewing machine oil. That took a while to clean up.
I kept getting irritated because the “nearly perfect condition” machine I paid too much for was a greasy mess, the tension assembly needed fixing, it was missing a screw, one spool pin was broken off, the other spool pin was stuck in place with epoxy, and the motor needed servicing. Then I would remind myself that those were the reasons I swore off buying sewing machines on ebay. Right, right.
At least the only shipping damage was the broken off spool pin. Although I can’t really count that as shipping damage, since the plastic pin was superglued in place and would have broken the first time I used it anyway. Unfortunately, I couldn’t find a 411G locally, so ebay was my only option.
My 411G is the electric only version:
There is a version of the 411G that was made to convert between treadle and electric. Maybe one day I’ll find one. There is a groove for a regular leather treadle belt on the balance wheel. It has a belt cover on the front and a different type of clutch knob on the handwheel [Note that part of the clutch knob is missing on the handwheel below—see the image in the comments section for what a complete one looks like]:
I tested out my machine on some cotton/spandex fabric that my Singer 328K, Singer 401A, and other vintage sewing machines had a hard time with. The 411G did great on this fabric. Yay! It seems to work better on tricky knits with Singer size 90/14 ball point needles, though. I also tried Schmetz stretch needles and Organ ball point needles, but I got a few skipped stitches. I can live with having to buy Singer ball point needles for this machine. Organ universal needles work fine in this machine for sewing woven fabrics, which is good, since they are cheap and I have a lot of them.
Another reason I wanted a 411G is that it chain stitches (if you have the chain stitch needle plate, part #503599). I have a Singer 604E that I got for chain stitching, but it doesn’t produce a very consistent stitch. The 411G’s chain stitch is a bit better, but I’m still getting the occasional giant thread loop or broken thread. Maybe I can get it to work more consistently if I play with the tension and stitch length.
I decided to clean and lubricate the motor, just to see if I might be OK using it as an electric sewing machine (directions for cleaning a Singer slant needle motor can be found on this page). I also cleaned the motor commutator with a pencil eraser. I put the motor back in, and it sounded better and might have had a little more power. For a vintage machine, it’s pretty nice. It was a top of the line machine in it’s day. I still couldn’t handle sewing on an electric machine, though. It’s too loud, it’s too hard to control the speed, it’s hard to push the button on the foot controller, and it makes that annoying electrical humming noise when it gets stuck on a thick seam. So I promptly took the motor back out.
It took some work to get this machine into a typical Singer treadle base. Maybe this machine will fit in the newer (1950’s and 1960’s) Singer treadle cabinets, but the older one I have needed some modifications.
First I had to take out the metal plate on the right side of the opening for the sewing machine. It is attached to a giant spring, which also had to come out. With a mirror and a light, I was able to see the screws I needed to remove.
I’m not sure I would be able to put that spring back in. It was under a lot of tension, and I’m not sure how it all fits together. Here are the parts I took out:
I tried putting my 411G in place, but the ledge on the front sticks out too far and hits the machine:
I sawed off 4 mm from the edge of the front piece of wood.
Now the machine fit into the opening, but I discovered I couldn’t lower it completely to shut the cabinet!
I couldn’t fix that, so I just put a plastic cover over the sewing machine and tip up the left side of the table against it when I’m not using it. I can’t leave the cabinet open all the way since it sticks out into the middle of the room and gets in the way.
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Now I had to figure out how I was going to treadle my 411G. First I thought I’d try using size 2/0 candle wick in the little notch on the left side of the balance wheel. I ordered some, but then the next day (after it was too late to cancel my order) I decided I’d rather try using a flat urethane belt over the flat part of the balance wheel. I got 1/2″ wide, 0.062″ thick belting. I don’t think anything thicker would fit over the balance wheel without scraping against the body of the machine.
I had several options lined up to try – candle wick, my spare urethane spinning wheel belt, and flat urethane belting. There is a piece of 3/16″ leather treadle belt in the picture below for reference. I decided to try the flat belt first, and it worked so well I didn’t try the other options.
I cut the belt lengthwise into 7 mm and 6 mm wide strips. I used the 7 mm wide strip. I joined the belt by melting the ends near a candle flame then pressing them together. After it cooled I cut off the bead at the join with a razor knife. After practicing a couple of times, it’s not hard to do.
Here’s the join:
The flat belt works pretty well. It doesn’t slip at all, even when I sew over thick seams. Most of the time it rides at an angle on the drive wheel:
Sometimes the belt works its way part way over the edge of the drive wheel, and it looks like it is going to pop off, although it hasn’t actually come off yet. I shortened the belt a little to see if more tension would help, but it didn’t make any difference. [Edit: Actually, shortening the belt did help. The belt has been staying on the drive wheel.] It sews fine, though, and if I notice the belt working its way over the edge, I just give it a little nudge to get it back in place.
I really like that the urethane belt never slips, even on the thickest fabrics, so even though I have to nudge it sometimes, I’m happy with the flat belt. Cutting the belt narrower, maybe 5 mm wide, would probably help keep it on the drive wheel, but I was worried a narrower belt would stretch out too much or get wedged into the notch on left side of the balance wheel. I do have that other piece of belting I could try cutting narrower if the belt does ever start coming completely off the drive wheel.
I don’t like that the spool pins are on top of the upper cover. You have to open the cover to see the stitch pattern chart, which is hard to do without knocking off the spool of thread. Since the one remaining spool pin is too short anyway, I decided to use a separate thread stand.
This Superior Threads stand is pretty cute, but considering how much I just spent on this machine, I decided I’d better just make my own thread stand for now. I made one from an old yardstick, a skewer, an old plastic food container, half of an old knitting needle, a bag of sand, a pair of nuts and bolts, and some tape. Not very pretty, but effective.
I was having problems with the spool spinning too fast causing the thread to wind around the knitting needle, but wrapping the thread twice around the thread guide seems to have solved that problem.
I like the mismatched drawer pulls on my treadle cabinet. Kind of shabby chic, or in my case, just shabby. Maybe I’ll replace those when I get around to refinishing the cabinet.
I’m really hoping I can manage to stop buying sewing machines now. My fleet of sewing machines is feeling pretty complete. I have six treadle machines, which are the machines that I actually use (The electric machines sit on a shelf. Or on the floor. Or up in the storage loft). My Singer 201-3 is my most frequently used straight stitch machine. I have my Singer 15-88 set up for jeans topstitching thread. I probably won’t use my Singer 328K much now that I have the 411G, but my kids use it sometimes. I have a Fleetwood F-5000 free arm machine that I mostly use for hemming jeans. My Janome 712T only gets used for sewing bras and underwear, but if I can get the 3-step zig-zag special stitch disc made for the 411G, I probably won’t use the Janome much.
In addition to the treadle machines, I have a Juki MO-654DE serger, which I really like, and a Brother 2340CV coverstitch machine. I also have a portable electric walking foot machine that will sew material up to 3/8″ thick. So I’m all set to sew just about anything from lightweight silk to a teepee. I can stop now. I don’t need any more sewing machines. This time I really mean it. Seriously. Well, except maybe if I find a treadle version of the 411G . . .
This is so fascinating. I love the work you did on your machine, and then your homemade thread stand. It’s very clever how you made it all work for you. I have not yet bought anything from eBay – there are so many lovely items – I am tempted. I am afraid that I might end up buying a lot of trouble. I’ll have to go through and read up on your other machines!
Let’s get a bag of sand, a knitting needle, and a ruler, and make…… If I’m ever on a deserted island I hope you are there, with a couple treadles of course.
I was fascinated by the way you converted this machine. I wouldn’t know where to start.
I bought a machine on eBay once and it was ok but not what I’d hoped for – i wouldn’t do it again
Very interesting thread: )
If you know what you want, you have to persevere!? You doing an excellent job there, seems to me.
I love the Singer slants & have a few…. 401G x2, 404G, a 411M (Italian) & a couple of 431Gs.
Being in UK there is steady trickle of 411 & 431s available on Ebay & Gumtree, but it is always Caveat Emptor!! Buyer beware…. I always collect rather than risk shipping, which gives you the opportunity to test & examine thoroughly before taking them home.
Not always practical, of course, I would not easily travel more than 100miles to do it. And then only if I have a family member en route, to combine the trip with something useful at the same time.
Re the chain-stitching on the 411 & 431s, all three of mine do it very well, but tension is critical. A tiny difference makes ALL the difference in my experience, & of course you need a smooth, even feed of the upper thread before you even start….. I’m currently making my own universal thread stand & it is very interesting to see yours…. I’m using bicycle spokes rather than knitting needles, but if it works, cool: )
One serious weakness with the slants is the rather crude & delicate thread spooling set-up. Nylon/plastic & not durable. A design fault I would say, but there must be solutions to this & I’m thinking about a fix quite seriously.
Please excuse my long reply, but I thought it necessary.
Keep up the good work: )
Here is a blog post about replacing 411 spool pins: http://archaicarcane.com/replacing-singer-411g-spool-pins/. I decided not to bother, since it’s easier to open the top cover with the left spool pin missing. Also, on mine previous “repair” efforts have messed up the area that the spool pins attach to, so I might have some trouble.
I think I have a neat solution for the Slant plastic spool pin problem at last!
Using bike chain-ring bolts. Easy & cheap to do.
Pics & fuller explaination on my website page here:
I have the electric/ treadle one. Do you know what it could be worth
I am in SA
Well, thanks for that Leila. I am familiar with Tammis blog & video about the spool pins: ) She is the best online resource for Slants in my opinion, & I would never have set out on this course with the 400 series machines without her many useful hints & expertise. Not much else online for these lovely machines that I’ve seen.
I was thinking in terms of a simple alloy pin with a suitable screwed end to it underneath to fix it properly to the cam stack lid. Not difficult if you have the time, & a lathe; ) There would be a definite market for a reliable substitute, I’m certain! Just needs to be easily/economically reproduced….
I have ‘fixed’ several broken, missing pins previously & it is such a chore.
Not as much as converting to treadle though!
You are a total expert on fixing these machines and I do like this latest one. I love following your mechanical adventures!
Hi, can the 411G drop its feed dogs? And if not, then what is that lever on the bed for? 🙂 I’ve had a 431G and was thoroughly disappointed with that one. It was in very good shape, but it could do too much yet not enough useful stuff among that. For one, it could not drop feed dogs, meaning it could not make a decent button hole. And I found chain stitching on it flaky at best, so when my Kenmore arrived from USA, Singer 431G went on eBay and over to USA. Funny how the world turns around. 🙂
The lever is to raise up the plate around the feed dogs instead of lowering the feed dogs. The middle lever position is for darning, etc. A lot of Singer slant needle machines have this feature. It obviously is not as effective as lowering the feed dogs, since you don’t have as large of a flat surface. I haven’t tried making a buttonhole on it yet. I always use a buttonholer. I have one of the older style ones for slant needle machines that comes with a feed cover plate that screws on. I’ll likely make most of my buttonholes on another machine that can drop its feed dogs, though.
Thanks, Leila! This is a lot better than nothing though! The 431G does not have such a lever and comes with a separate set of raised plates instead. That’s useless for buttonholes though because you can’t change a plate mid-stitch! I have buttonholers too, but they can’t make a corded buttonhole, and besides I often find it faster and easier to make my own with just zig-zag. The next crucial question is then this: if you set zig-zag width to 2 and set the needle right, do you get zig-zag sewn in the right half of the foot? And if you set the needle left, then in the left half? The 431G does not do it on the right because “the right side position is reserved for special functions” according to the manual. The zig-zag comes out centred. How crazy is that?!
The “red lever” controls either the needle position (left, middle, right) or the stitch width depended on the type of stitch you have it set to. It’s confusing. When you are straight stitching, the red lever controls needle position. When you have the stitch settings set to zig-zag, the red lever controls only the width, and you can only sew a centered zig-zag stitch [*Edit: I was wrong about that. See Stacy’s comment below*]. When you are using a combination pattern, the red lever changes the pattern in mysterious, unpredictable ways.
Yep, this is pretty close to 431G. Yes, I remember it now. I read the manual about five times back and forth trying to figure out how to stitch zig-zag on the right. You can’t. The way I make simple buttonholes is like many semi-automatic machines do it: 1) Set zig-zag width to 2, needle left – stitch forward for the length you need. 2) Set zig-zag width to max, needle centred, drop feed dogs, make some stitches. 3) Set zig-zag width to 2, needle right, feed dogs back on, machine in reverse – stitch back to the beginning. 4) Repeat step 2. I’ve got a long rectangular foot in which you can set the length for the buttonhole and it holds the material in place firmly. Very handy, but this method does not work with the venerable 431G! 😐
Hi Leila, Elena and all, I agree with everything Leila said except that:
except for straight stitching, the red lever always controls the width, And,
you Can sew a left or a right (narrow) zig-zag stitch.
Left ZZ stitch is AL:
(Center ZZ is BL)
Right ZZ stitch is CL
Also, there’s a description on pgs. 50-51 on how to make buttonholes, using AL for the legs, and (I think they mean AK for) bar tacks, using a pivot. I don’t think its reverse stitch is exactly the same as advancing, hence the pivoting.
Leila, or anyone else, do you think or know if the 128 or other compatibly belt grooved handwheel would fit on the 411 (401, etc) shaft to treadle? Thanks.
Stacy, who treadles one of mine.
Thanks for the correction about left and right zig-zag, Stacy. I missed that in the instructions.
Unfortunately, the handwheel and shaft on a 411 are different from a 401 handwheel and shaft, and both are completely different from the common handwheels used on earlier models such as the 127, 128, 66, 99, 15, and 115.
[…] decided to attempt to make a 3-step zig-zag special disc for my Singer 411G. In my opinion the 4-step zig-zag that is built in just isn’t a substitute. I usually use a […]
You are so talented. I am in awe of you being able to draw up files for 3d printing! I hoped to purchase your 3 stitch cam for my 401g, but unfortunately the postage costs came out almost as much as the part itself, so it will have to think whether i can justify it. My son has a 3d printer and I found a file on Thingverse for a foot adapter similar to the one you write about which I have asked him to print for me, we will wait and see!!!
Please keep on posting you interesting articles. Best wishes Vikki
I like your new treadle slant machine! I’m glad that you posted about adapting a modified flat belt to the hand wheel, and where you got it. I have a Singer 401G that I’d like to set up as a treadle. My wife uses electric Singer 401A machines at home and at the shop, so I think she might do ok with a 401G when she needs or wants a treadle machine. I use a Singer 319W treadle for most of my clothes mending, and have commented on it at this site before.
Any chance that you could post a photo of your Fleetwood F-5000 free-arm machine? I would like to see what it looks like. I collected a Bernina 830 Record that I’ve thought about trying to convert to treadle, but haven’t achieved that yet.
My wife and I have 8 treadles set up and ready to sew in our house. I use four of them fairly regularly (1950s Singer 319W, 1917 Singer 16-41, 1960s Singer 20U, 1943 Singer 29K70) and she uses two of them from time to time for quilting (1901 Singer 27K2, 1950 Singer 78-3). I do almost all of my sewing on treadles, but she does almost all of her sewing on electrics. The two that get little or no use are a 1936 Singer 96-40 (set up for darning) and my maternal Grandmother’s 1906 White VSIII. My Grandma got it used as a wedding present in 1928. The White works great, but is waiting until our daughter gets room for it at her home to take it through another generation. She’s a sewing gal too, so she’ll get plenty of use out of it.
CD in Oklahoma
Here’s a before picture of the Fleetwood with the motor and a picture of it as a treadle (complete with cute kitten). I removed the base and bolted the machine directly to the table. I cut a hole in the table under the free arm to get enough clearance for it, then covered the table top with vinyl since I used an ugly scrap piece of wood. I was lucky that a Singer balance wheel fit on the machine, since the original one is plastic and has a crack in it.
Thanks for the photo links. Looking at your machine gives me some ideas about how to proceed with mine. I’ll have to see if a Singer spoked wheel will fit mine. The project has been on the back burner for a while, since I rarely use a free arm machine for my jeans mending. Sometimes, knees are easier to mend on a FA. To mend a hole in the little skinny-legged jeans knees that I rarely see, it’s about as easy to open a side seam as it is to wrestle them around on a FA, especially now that they are using a chain stitch in the jeans leg seams on some brands. Those side seams can be opened full-length in one quick zip (sometimes even while the owner is still wearing them).
CD in Oklahoma
Update: I had a change of plan on my freearm treadle sewing machine. I went with a Brother Riviera 1681-M that I set the existing four machine cushions into shallow holes in my solid treadle top to stabilize it. I have a stripped-down treadle stand that I use for several machine types by changing tops. I replaced the hand wheel with a 9-spoke Singer wheel, and installed a hand crank attachment on it as well. I can throw the treadle belt off and lift the machine off to go portable and operate it by HC. It only has zigzag and blind stitch on it, so I’m somewhat limited on stitches, but with the addition of a darning foot, it works really well to mend small holes in denim jeans legs, and I still have zz when I want it. I have a photo of it on one of my sewing machine collection pages:
CD in Oklahoma
Thank you so much for posting this!! I’ve been trying to figure out how to treadle my 411G too. Can’t wait to try it out!
As to your zig zag for knits- have you tried doing a straight stitch with double needles? I don’t sew on knits much (still have nightmares of sewing on 1970’s poly knit as child) but I did try sewing a t shirt and used a double needle. It gives you the double row of straight stitches on the front, but on the back it creates a zig zag that looks very much like a serged seam. It worked perfect. I had the stretch needed plus a nice finish.
I haven’t tried using double needles on this machine, but I’ve tried it on my other machines. I think every garment I’ve used a double needle hem on has ended up with broken stitches after being worn a few times. In my opinion double needle hems are OK on fairly stable knits or knit fabric that has been interfaced, but not anything that will be stretched a lot. I sew enough knit garments that I convinced myself I could justify a coverstitch machine, so that’s what I use for most of my knit hems and topstitching now. I use the three step zig-zag for sewing elastic directly onto lingerie, etc.
Good luck treadling your 411G. I hope it works for you, too. I’m still really happy with how mine is working out.
[…] love my Singer 411G, but it really needed a 3-step zig-zag stitch. I made a 3-step zig-zag disc a few months ago, but […]
I’ve also been treadling a 411 and used a lathe to cut away the handwheel in order to fit a standard treadle belt. I really like the machine set up this way – the 411 does a great straight stitch as well as chain and fancy stitches, so I can do lots of different jobs with the same machine in the sewing table. I have had issues with the belt slipping though. I initially overcame this by using violin bow rosin on the belt – and more recently by adding a thin layer of Evo stick glue over the full width of the bearing surface, but am still looking for a better way, so thought I might try your flat belt idea. Can I ask where you got your urethane flat belt from please?
From McMaster https://www.mcmaster.com/#flat-drive-belts/=16nipsp, part #6075K12. I had to shorten it a couple times as it stretched, and I used a little rosin, too. The flat belt is not perfect either. I am using this as my main sewing machine, though, so I guess that means it works well enough.
Thanks for the quick response and the link. That is useful as the type of place I should be looking. Sadly, I haven’t found a similar supplier in the UK – yet. Choices here seem to be either round polyurethane – which may only be marginally better than a leather belt – or industrial quantities of really wide conveyor belt. I’ll keep looking.
Happy treadling with your 411!
Hi, I happen to own a 411g also, though mine has the cover and the treadle balance wheel. Thanks to your blog I now understand why mine is different. Very educational. BTW, you are correct, the cabinet has to be a later midel without the fancy cast iron to fit properly. Mine was picked up at a thrift shop in a later model base with straight sides. The belly pan can be changed to fit your machine, get one on ebay.
Great job on your thread holder, it looked so cute. Well I just found a 411(G) on facebook, but the owner says that its in working condition but they can’t guarantee. So I am debating if I want to purchase it or not, they are asking $50 for it. I may just save up and buy a new one but would prefer an older model because they last longer.
If you are in the US, where these were never sold new, that’s a great price, so I’d say buy it and try it. 411G’s regularly sell for $300+ on ebay in the US, so if you don’t like it, you could re-sell it for more than you paid. Even if it needs repairing and it’s not something you can deal with fixing, you could still sell it for $100+ on ebay.
Hello Leila , I’m Tom from Belgium and I have a Singer 411G made in company in New York. And is in very good condition I never used because I don’t now how. I find this Singer in a thrift store in Antwerpen. Maybe you now people that searching for a 411G because this one is for sale. For contact me : email@example.com greetings Tom
Hi, I love your blog. I have just bought a 401g on ebay – it has the cut out on the right of the body so that you can see the balance wheel, but has the normal balance wheel like yours. I’d like to turn it into a treadle, but do I have to remove the motor to do this? I’d rather keep the motor option as it still works, and be able to change between the two. You say you removed the motor, was this to accomodate the treadle band? Any advice really appreciated. Ona nother note I have just bought your stuffed mannequin on Etsy and am half way making it, great stuff.
With the hand wheels without the treadle belt groove, you would have to do something like I did to treadle it. A regular leather treadle belt will not fit. If I remember correctly, I had to remove the motor because it was in the way of the treadle belt. Otherwise I would have just removed the gear that engages with the motor and left it in place. The 401G is a little different from my 411G, though, so I suppose there’s a chance you might be able to leave your motor in while treadling.
Treadle machines are great for sewing the stuffed dress forms, by the way, since they give you much better speed control 🙂
Hi Leila, Thank you for making that clear to me. I need to find a treadle base and some flat belt. I use polyurethane cord on my spinning wheel, and have a few spare metres of it, but (of course, because it would be too easy for it to be the same profile), it is round. Then I will see how I get on. I’ll add a bit more about making your mannequin on the correct page!
SINGER MODEL 411G 110-120 VOLTS 0.8 AMP 50-60 CYCLES A.C. THE SINGER COMPANY NEW YORK FOR SALE!!!
I am in the process of converting a 401G to treadle as well. I am ordering the polyurethane flat belt you suggested. My question is: How did you cut the belting lengthwise? What tool did you use to get a straight cut? A mat knife or another type of blade?
I marked the cutting line with an ultra-fine point Sharpie and cut it with a pair of large, sharp scissors. The polyurethane cuts easily. I did try a razor knife first, but the scissors gave me better control.
Thanks so much for the information. Wish me luck!!
You mention the convertible treadle/electric 411G above.
I just found one on Ebay, & bought it: ) Not collected yet because of the Covid Lockdown situation here in UK, but I’ve got the Manual & the appropriate page insert in the post currently.
I didn’t know this version existed previously, did some research & came across this thread! Not much anywhere else that I can find.
I was thinking that something was missing from the handwheel, but your pics are the same as mine. I’m very interested to see how the switching mechanism actually works. Does it disconnect the motor, or does it ‘drag’ on treadle, for example!? I’d be really interested in your comments: )
Currently I’ve got 4 other 411s, (one an original Factory spec. treadle) & I do believe the 411Gs, (or 411Ms) are the most versatile of all the 400 series Slants.
I finally found an actual treadle version of the 411G for myself. The handwheel in the picture above IS missing a piece. The one I just got has a few cracks in the plastic clutch knob, so I can see how they would break off. Most of the 411G is made well, but there are a few plastic parts that fail. Without that knob it may not be easy to disengage the clutch for bobbin winding. Here is what the treadle handwheel should look like with all its parts:
I don’t know how you are supposed to switch between treadle and electric! The electric version I’d rigged to run on treadle (which already had the motor removed) was in better shape overall than my “new” treadle version, so I just swapped out the handwheels, and I’m using the one with the motor already removed. If I remember correctly, it looked to me like the motor would get in the way of a treadle belt, but I’m not sure, since I didn’t actually try putting a belt on the treadle version with the motor in place.
So maybe I was wrong about the machine being able to easily switch between motor and treadle power. I can’t find any info on it either. Mine is set up to be treadle only, with the motor removed.
The first 411G I bought was from the UK and didn’t have the heavier treadle-ready grooved handwheel. I later found a 411G which had that handwheel. The previous user treadled it, but as it still was engaged with the motor, it felt bogged down. I decided to leave the motor in, but to remove the gear from the handwheel. Although I can later replace that gear, I decided to just buy another handwheel (with its gear)., so if I should want to use this one with the motor, I can easily swap handwheels.
Very interesting to see yours Leila! I don’t think you were wrong about the Switchable version! The details on how to switch is on the page insert, which I cannot quite decypher from the Ebay pics. (only 350Kb or so) I’ve posted the relevant Ebay pics on my Blog this morning anyway. https://slantzone.blogspot.com/
Do I assume your pic above is the Standard Treadle version, rather than the Switchable one? I took some pics of my Standard Treadle handwheel this morning & posted them on my blog for comparison purposes. It looks like yours: )
I was sort of hoping that the standard Treadle Handwheel clutch knob might just be interchangeable. A forlorn hope… When I do get sight of the page insert I’ll post a good photo of it.
I cannot see how the motor can be disconnected via the Clutch Knob mechanism, so it’s going to be a ‘drag’ on the treadle option, surely? I don’t think it is a big deal actually, because you wont be swapping the Treadle/Electric often? You just decide which to use, & always have the option to change later. In most cases, I’d say, you’ll opt for treadle & keep it thus?
All will be revealed when I actually get the machine home though. It’s just very frustrating waiting to see it & examine in detail!
(En passant, my 2017 link above to the Slant Spool Pin Fix is now a dead link. I’ve since registered the Slant.Zone DN, & the current link is https://www.slant.zone/slant-spool-pin-fix/ I can’t edit it myself: )
I’ve since found what I believe is a similar mechanism on a Singer 616 15 which shows the principles of the switching. I’ve added a pic to my blog if you want to look. Seems that the Electric/Treadle switch is simply an ‘in & out’. Out for treadle, in for Electric. The clutch as normal.
I still don’t have the Manual/Page Insert in the post yet.
Thanks for the article. It inspired me to buy a 411. I’ve put a 110 volt motor in it. she sews smooth. Next up is the treadle conversion. 2 questions: 1- Do you have the files so I can print a 3 step cam, or do you sell the cam? 2- What class bobbin is supposed to fit a 411G? Respectfully; Keith
Here is the 3-step zig-zag cam I have on Shapeways: https://www.shapeways.com/product/M8GVC6RA5/singer-top-hat-disc-3-step-zig-zag
I also made a 2-step zig-zag cam and buttonholer templates, which you can see in my Shapeways shop.
The 411G uses metal class 66 bobbins. Some modern reproductions are OK, but some are not as good as the vintage ones. I have vintage bobbins collected together from many different sources, and two different types of modern reproduction class 66 bobbins. They all work and fit on the bobbin winder, but one of the types of modern ones makes a louder rattling noise.