GerryR

Any input about my remarks above?

Eric, Sorry for my delayed response; our web antenna died, and we just got a replacement. Thank you for the tips and I will appreciate the scan of the machinist's section. Also, I was wondering if there is anyway for you to put a torque wrench on that shaft you used in the video, with the pulley in a vise, to tell at what torque the clutch trips. One would think that there had to be a spec for this, so they could be setup and tested. It would be nice to have a "number" to work to. Just a thought, not trying to make work for you. I couldn't get the machine timed properly and found that by moving the clutch pulley to where the "other" screw was on the shaft flat, everything seems to be in time now (thread take-up lever at its highest point, etc.). Buy the "other" screw,I mean the following: If you look at the face of the clutch pulley with one screw at 6:00 and the other at 9:00, I moved the pulley so that the screw at 9:00 is at the shaft flat. I was then able to get the feed-dog cam and the hook timed properly. But, what still concerns me is if I get a jam ("hit a brick"), I am going to break something with the clutch the way it is now. (This machine was supposed to be "little used," "almost new." Right.) Thanks again; you have been very helpful. Gerry

Eric, thank you for taking the time to post this. Interesting, the clutch on my machine does not have an adjustment screw, just two pins to hold the pieces in place. There isn't any play, but it requires King Kong to trip the clutch. As I stated above, the bevel gear on the shaft was forced to move along the shaft to disengage the hook drive gear when a jam occurred. Fortunately, neither of the gears were damaged. I figured there must be an adjustment / procedure, but evidently there isn't on my clutch. I'm wondering if the eccentric screw(?) pin is available? Thanks again. I'm looking forward to whatever other info you can come up with. Gerry

Ian, Mobil Velocite No. 10 Spindle Oil (ISO Grade 22) is the same as the Lily oil. It can be bought here: http://www.mcmaster.com/#spindle-oil/=o13t0u I don't know the price difference, but it is another optional source. Gerry

I have a manual for this machine, basically a user's manual, with some setup and adjustment information in it. I was wondering if anyone has a complete service manual that explains all the timing relationships between the top and bottom end and a sequence as to how to set the machine up as if one was building it from scratch. Also, any information as to how to check the clutch. The manual states it is there to protect the hook assembly in case of a jam. When I had a jam, the hook bevel gears jumped and the bevel drive gear on the shaft moved away from the hook drive gear. Fortunately, nothing broke, but the clutch never released. There must be some procedures for checking this out, if not for this model, then maybe for a cloan or similar model. Any help will be appreciated. Thank s in advance. Gerry

Ian, it is actually an adjustable height work station table from Harbor Freight Tools ($28.00) (http://www.harborfreight.com/adjustable-height-heavy-duty-workstation-46725.html). It is supposed to support 1000 lbs. I doubled the top and added / welded on the wheels, etc. It was a fun project.

With a pretty crowded shop, I have to be able to move things around pretty easily. I built this sewing center that keeps everything handy and can be moved into a corner to get it out of the way Two of the wheels lock once in place to sew.

Being new at this, I have seen two different approaches to lubricating the thread, one lubes the thread just ahead of the needle, and the second lubes the thread, basically, as it comes off the spool, allowing lubed thread to pass through all the mechanisms, including the tensioner. Having lube pass through the tensioner bothers me, as it seems it would be contrary to the purpose of having drag on the thread for the tensioning. I also read that getting thread lube on everthing is not necessarily good. Like I said, I'm new at this, so where is the best place to lube the thread?

So, I am sewing along on a piece of 8 oz. leather and get about 100 stiches into the work and finish up at the end and remove the work from the machine. I flip the work over and things look pretty good, EXCEPT I see one stitch where the the bottom thread didn't pull up into the leather. What are possible causes of this, how can it be avoided, and how do I fix or repair that without pulling everything apart and trying again?? Thank you for any input. Gerry

The VFD can operate in "constant torque " mode if the motor is designed for VFD operation (because of both voltage and current (heating) requirements needed to accomplish this). However, you can set the VFD to run with a standard 3 ph motor, and you can set it to run just like a DC "servo" with an external (foot) speed control. I have a 1 hp, 3 ph, 230 VAC, 1725 rpm motor to which I added a 5:1 gear reducer, and then did a further reduction through the pulley, giving about a 7:1 total reduction. I made a foot control (could have bought one, but had what I needed to make one) and can vary the speed from 0 to about 240 strokes per minute (which totally suits my needs). With the reduction, the motor is at ample speed at low strokes per minute to prevent any over-heating and there is ample torque to sew 3/8 leather. If by chance I need to go faster, I can reset the upper frequency limit in the VFD and drive the motor in "constant hp" mode (lose some torque) and move along, for example on thinner, garment material. My point is that the VFD is as versatile as a DC drive if set up properly. I am not that familiar with the so-called DC servo's sold for sewing machines, but unless there is some sort of feedback from an encoder (which I tend to doubt because of their low cost), it is not a true "servo" but merely a "variable speed" DC drive. So again, the VFD, I believe, is a viable option, especially if you already have the motor, which the OP does have. The DC servos that boast needle position capability, I assume, do have some form of positional feedback encoder or sensors, and would be more inline with a true "servo" system.

You're forgiven, but yes, mechanically speaking.

I believe the OP bought a machine with the 3 ph motor on it. It may be less expensive to just replace it with the "correct" motor, but these are just some options if he wants to keep everything "original." With the VFD, you don't lose any torque, as it generates 3 ph out from the 1 ph in. Also, if the motor can take it, from the rated RPM on down, it can be set to run in constant-torque mode, so you get good torque at low RPM's. If you want to run above the rated RPM's, it will then run in constant-horsepower mode, and the torque drops off accordingly. But it gives a lot of options, not the least of which is variable speed. The phase converters (not the rotary converters, which generate all 3 phases) just start the motor, and then the motor runs single phase at 2/3 the rated power.

For $117.00 shipped, you can get a VFD (Variable Frequency Drive) that will convert your 220 VAC 1 ph input to 220 VAC 3 ph output to the motor. It will also give you speed control of the motor, I just put one of these on my Singer 153 W... but have been using them for years, installing them in factories and mills requiring motor speed control and 1ph to 3 ph conversion. Here's the link: http://www.automatio...0_VAC)/GS1-20P5 If you decide to get one and need some guidance in hooking it up, contact me. I hope this helps. Gerry pcox, The 4 wires have 220 (nominal) between any two of 3 wires, and the 4th wire is ground; no 120 VAC in a 220 VAC, 3 phase system.

Thanks Wiz. Gerry

Thanks Eric. So I assume from your answer that there are thinner belts available. Would you know a source? Gerry

First, greetings to all. I have a Singer 153 W... and was wondering if a standard "A" belt is OK to use from the motor to the drive pulley on the machine, or are there special belts for this purpose? The "A" belt appears to fit the groove OK, but the belt stands proud of the pulley by approximately 1/8 inch. I seem to recall a thread where a 7/16 inch wide belt was mentioned but was unable to locate that thread again and cannot find that size belt listed anywhere. Any input will be appreciated. Thank you. Gerry