Thanks for this video, helped me a lot. I did the heat treatment and also added a few drops of rubbing alcohol where it was stuck and in the oil hole and it got loose in its own in a few hours. :)
Hi J.A. thanks for you videos they help me to clean and unfreze an old Supernova type C, but I have a "problem" with cams, i.e. cams I and III make long stitches, for long a mean a figure is about 8 o 10 cm long. So I don't know how to fix it, to get back to a regular (about 1 o 2 cm length
I am happy to be able to help you with my videos ... Do you have an instruction manual for the machine? Do the settings you made for the stitch patterns match the specifications? I don't have a solution to the problem in a hurry. I assume that your machine is mechanically fine ... A pattern that is too long will be created if the stitch length is chosen too long. In addition, it should be noted that the settings for the translation on the cam mechanism are correctly selected ... I guess you missed something. Much luck.
If you remove the assembly, you lost the basic timing / settings for full automatic bottomhole! ruclips.net/video/7guSKcuR3F8/видео.html Julia is a very special thing, nobody has the knowledge to bring a dismantled mechanism back to full function....
The assembly must be dismantled in order to achieve optimal function. Everything should be cleaned and reassembled. However, this requires some time and mechanical understanding. The assembly back into the machine and then a setting of the automatic is also very difficult to explain in a video. It would take a long time. I currently don't have a video for this procedure.
Please try and turn up your volume I can’t hear you at all. I don’t know what the product was that you poured in the jar you didn’t show the purple bottle you poured from and if you said what it was I couldn’t hear you
Ok, to clean and loosen old oil residues, I used petroleum, WD 40, and similar products that have a cleaning and rust-dissolving effect. Laundry benzine is also possible. Caution, these cleaning agents have a degreasing effect, the components must be lubricated in a further work step after cleaning! To lubricate, I like to use the oil that is used in automobiles in the power steering. In the meantime, however, I know that there are sliding blocks in the mechanics of the automatic that have to be lubricated with a special grease. To do this, however, the unit must be further disassembled, which is not so easy. If the old grease is washed out during the cleaning and cleaning, it must be replaced to avoid wear and tear. That's where the squeak comes from, which can also be heard in the video. At the time of the recording I had not yet had this knowledge. I'll try to make a new video on this topic as soon as I'm able. I hope this information helps at least for the moment.... Greetings
Please help! I was cleaning this assembly like you have instructed. Suddenly a pin fell out from it. I know where it belongs but am sure it was bracing a spring inside. I don’t know what to do. Please help before I do more damage!
@ Donna Knipp Unfortunately, I can't quite tell what happened to you. It is so that I don't have every component exactly in front of my mental eye. It would certainly be possible if I had access to your Automatic divice that I could repair it. But at a distance without actually seeing it, I can't tell you what or how to proceed. Perhaps the matter can be explained by itself if you only look at the mechanics long enough. I taught myself everything I know about these machines now. Please don't give up, I don't think it's unrecoverable ...
J. A. Thank you for answering. I do not give up, just worried. It is the pin that goes into the cam mechanism that holds the sandwich of springs inside. I wish I could attach a photo. I am self taught as well and usually fearless. I found the mechanics manual and can see there are at least 5 pieces inside. The photo is unclear.
Hello, unfortunately I can't give a definitive answer to this, I only have NECCHI sewing machines and can't say which of the other manufacturers are compatible.
I have more machines than cam accessories so I'm missing some myself. Due to this fact I cannot possibly sell any of my sets. I hope you understand. These accessories can be found with patience and perseverance with daily research on Ebay - If it's a possibility for you...
Can I just soak this whole piece in kerosene? The cam doesn’t appear to be stuck moves freely and spring doesn’t sound bad when I press it like your other video
Good question, kerosene and plastic don't go well together, I think. It's this green part ... If everything works and runs smoothly, there is no need to clean it unless you want to know what it looks like inside. The assembly requires a little patience but is basically feasible.
What you are playing with is the “automatic brain” as Necchi called it . To repair PROPERLY it has to be Completely Disassembled and cleaned ! There is an outer coil spring that turns the the cam driving shaft and a set of little brake shoes with a compression spring holding them in place on the inside of the cylinder. The cylinder requires a SPECIAL CYLINDER grease for the Device to” pulse” the cam shaft turning it at various speeds so you could elongate patterns. After you reassemble and install unit back in machine it had to be calibrated for the proper amount ( on the model you are playing with its between 130-160 pulsations per one 360 degree turning of the cam shaft. Sorry to say but you should Not be making videos about something you know nothing about!!!!
@ Richard Givens Thank you, what you are saying is very interesting. I disassembled and cleaned the assembly and didn't publish a video of it, except for the grease I did everything right. The setting back into the machine after assembly, how should that work? I am ready to learn something new. In my opinion, no adjustment can be made here, because the timing / pulsation is carried out via the green cam on the upper shaft. Here the point in time could be changed depending on the needle position. Perhaps you can explain this to me in detail so that in this case I do not pass on false information. Furthermore, I want to make a video that shows the disassembly of an automatic of a Julia 534 to make it clear what is important. It looks like I'm in need of help....
@ Richard Givens ADJUSTMENT OF THE NUMBER OF IMPULSES FOR EACH TURN OF THE CAM AXLE Fig H9 While the machine is operated, the cam axle (upon which the cams are placed) moves in short impulses. The cam axle makes a complete turn of 360 degrees during the completion of one design. While making this one revolution of the cam axle, a complete cycle of a design is made. During this one full turn of the cam axle about 30, 36, 60 or 150 impulses of the cam axle take place, depending on the position of the marks " 1", " 2 ", " 3 ", or " 4 " on the design graduating knob in relation to the mark on the machine arm above this knob. The adjustment of the number of impulses is made at the factory and any readjustment is not necessary, even if the machine is dismantled or reassembled again. It is only when the following parts must be replaced with new ones, that the number of impulses may change and a recheck of the machine may be required: spring No. A 26/1/11, pulling drum No. C (A 26/3/6), spring sliding plate No. A 26/3/17, movement regulating ring No. D (A 26/3/15). The number of impulses which the cam axle completes during one turn of 360 degrees must then be checked again by following this procedure:
@ Richard Givens Set the design graduating knob at " 4 ". Turn the balance wheel by hand (or let the machine run very slowly, holding the balance wheel back) and count the number of impulses which the cam axle receives during one full turn of 360 degrees. If the number of impulses is between 135 and 165, the adjustment is correct. If the number of impulses is under 135, correct as follows: Turn the balance wheel by hand and bring the thread take up lever to its highest position; set the design graduating knob at " 4 " (see Fig. 89). Pull the cam connecting lever No. D (A 26/3/25) to its working position (toward the arm of the machine), so that the screws " A " and " B " are fully visible (see Figs. 89, 90 and 91). Loosen slightly screw " A ", and also loosen very slightly " B ", move the graduation pointer " C " slightly toward the " plus " sign (see Fig. 90). Fig. 90 Fig. 91 Now tighten screws " A " and " B ". d) Check again the number of impulses as explained previously und- er
@ Richard Givens If the number of impulses is still under 135, repeat the adjustments " A ", " B ", " C " and " D ". If the number of impulses is more than 170 (for each turn of the cam axle), proceed as explained in the second test. If the number of impulses, which the cam axle makes during one full turn of 360 degrees, is more than 165, correct as follows: Turn the balance wheel by hand and bring the thread take-up lev- er to its highest position; set the design graduating knob at " 4 " (see Fig. 89). Shift the cam connecting lever No. D (A 26/3/25) to its working position (toward the arm of the machine), so that the screws "A" " B " are fully visible (Figs. 89, 90 and 91). Loosen slightly screw " A ", and loosen also very slightly screw " B". Move the graduation pointer " C" slightly toward the " minus " sign (Fig. 91). Now, tighten screws " A " and " B ". Check again the number of impulses of the cam axle during one turn of same, as previously explained under (2). If necessary repeat adjustments " A ", " B ", " C " and " D ". The adjustment of the graduation pointer " C " is very sensitive, therefore, very slight changes of its position are required. Horn to count the number of impulses of the cam axle. The following instructions will help you to facilitate this procedure: Place the cam " 0 " (zero cam), or the gauge cam No. 10.2, on the cam axle (instead of the regular cams). With a pencil, mark a short line on the zero cam (or the gauge cam No. 10.2) and then mark another short line on the mounting plate of the “Automatic " device (see Fig. 92).
@ Richard Givens Fig. 92 Turn the balance wheel by hand and count, one by one, the number of impulses made by the cam axle. Stop the machine when the cam axle has made a full turn of 360 degrees (when the mark on the gauge cam No. 10.2 is again in line with the mark on the mounting plate for the “Automatic "). Instead of turning the balance wheel by hand, the machine may also be run with the aid of the motor. In this case, however, one hand should be placed on the balance wheel to slow down the machine in order to distinguish and to count the number of impulses.
Thanks for this video, helped me a lot. I did the heat treatment and also added a few drops of rubbing alcohol where it was stuck and in the oil hole and it got loose in its own in a few hours. :)
♥️
Hi J.A. thanks for you videos they help me to clean and unfreze an old Supernova type C, but I have a "problem" with cams, i.e. cams I and III make long stitches, for long a mean a figure is about 8 o 10 cm long. So I don't know how to fix it, to get back to a regular (about 1 o 2 cm length
I am happy to be able to help you with my videos ... Do you have an instruction manual for the machine? Do the settings you made for the stitch patterns match the specifications? I don't have a solution to the problem in a hurry. I assume that your machine is mechanically fine ... A pattern that is too long will be created if the stitch length is chosen too long. In addition, it should be noted that the settings for the translation on the cam mechanism are correctly selected ... I guess you missed something. Much luck.
bonjour, avez vous la video pour remettre ce mecanisme en place dans la machine ? merci d'avance.
Can you please do a video on how to take this out of the Julia. I have heard it’s harder to take out the cam assembly
If you remove the assembly, you lost the basic timing / settings for full automatic bottomhole!
ruclips.net/video/7guSKcuR3F8/видео.html
Julia is a very special thing, nobody has the knowledge to bring a dismantled mechanism back to full function....
Можливо , краще замочити на день в гасі або дизельному пальному і не ризикувати ?
Hi, got one question, can i use a cam assembly from a supernova ULTRA in a supernova BU? are they the same? thanks
ruclips.net/video/75cT_x9O_4g/видео.html
Have a look to this ....
J.A. Is it easy to re-install the cam assembly? Do you have a video for that work? Thank you.
The assembly must be dismantled in order to achieve optimal function.
Everything should be cleaned and reassembled.
However, this requires some time and mechanical understanding.
The assembly back into the machine and then a setting of the automatic is also very difficult to explain in a video.
It would take a long time.
I currently don't have a video for this procedure.
Please try and turn up your volume I can’t hear you at all. I don’t know what the product was that you poured in the jar you didn’t show the purple bottle you poured from and if you said what it was I couldn’t hear you
Ok, to clean and loosen old oil residues, I used petroleum, WD 40, and similar products that have a cleaning and rust-dissolving effect. Laundry benzine is also possible. Caution, these cleaning agents have a degreasing effect, the components must be lubricated in a further work step after cleaning! To lubricate, I like to use the oil that is used in automobiles in the power steering. In the meantime, however, I know that there are sliding blocks in the mechanics of the automatic that have to be lubricated with a special grease. To do this, however, the unit must be further disassembled, which is not so easy. If the old grease is washed out during the cleaning and cleaning, it must be replaced to avoid wear and tear. That's where the squeak comes from, which can also be heard in the video. At the time of the recording I had not yet had this knowledge. I'll try to make a new video on this topic as soon as I'm able. I hope this information helps at least for the moment.... Greetings
Please help! I was cleaning this assembly like you have instructed. Suddenly a pin fell out from it. I know where it belongs but am sure it was bracing a spring inside. I don’t know what to do. Please help before I do more damage!
@ Donna Knipp
Unfortunately, I can't quite tell what happened to you. It is so that I don't have every component exactly in front of my mental eye. It would certainly be possible if I had access to your Automatic divice that I could repair it. But at a distance without actually seeing it, I can't tell you what or how to proceed. Perhaps the matter can be explained by itself if you only look at the mechanics long enough. I taught myself everything I know about these machines now. Please don't give up, I don't think it's unrecoverable ...
J. A. Thank you for answering. I do not give up, just worried. It is the pin that goes into the cam mechanism that holds the sandwich of springs inside. I wish I could attach a photo. I am self taught as well and usually fearless. I found the mechanics manual and can see there are at least 5 pieces inside. The photo is unclear.
Hi this is Sandro from Brazil, i got a vintage supernova, but i dont have the cam. Do you know if the K-matic cam fits on supernova?
Hello, unfortunately I can't give a definitive answer to this, I only have NECCHI sewing machines and can't say which of the other manufacturers are compatible.
@@necchi-pavia Thanks a lot for the answer. do you sell the cam set?
I have more machines than cam accessories so I'm missing some myself. Due to this fact I cannot possibly sell any of my sets. I hope you understand. These accessories can be found with patience and perseverance with daily research on Ebay - If it's a possibility for you...
@@necchi-pavia Thanks a lot once again. Can have your e-mail address?
Can I just soak this whole piece in kerosene? The cam doesn’t appear to be stuck moves freely and spring doesn’t sound bad when I press it like your other video
Good question, kerosene and plastic don't go well together, I think.
It's this green part ...
If everything works and runs smoothly, there is no need to clean it unless you want to know what it looks like inside.
The assembly requires a little patience but is basically feasible.
Thank you
انا من مصر عمى مكنه زى ده مش عرفه اتعمل معها
BTW anyone know where to find hooks for Necchi supernova Julia's automatic treader.
Could you help me, please? I have a Necchi 554
ruclips.net/video/0eBeFkGHuSk/видео.html
@@necchi-pavia thank you, i already seen this video
سلام عليكم ورحمة الله وبركاته انا من الجزائر ولايه ورقلة عندي الآلة الخياطه مثله هاده واريد من عنده الكتاب هاده الاه الخياطه وشكرا
My cam rotates with the camera on, but when that lap is going to end it stops. What I can do? Could you help me, please?
What you are playing with is the “automatic
brain” as Necchi called it . To repair PROPERLY
it has to be Completely Disassembled and cleaned ! There is an outer coil spring that
turns the the cam driving shaft and a set of
little brake shoes with a compression spring
holding them in place on the inside of the
cylinder. The cylinder requires a SPECIAL CYLINDER grease for the Device to” pulse”
the cam shaft turning it at various speeds so you could elongate patterns. After you reassemble and install unit back in machine
it had to be calibrated for the proper amount
( on the model you are playing with its between
130-160 pulsations per one 360 degree turning
of the cam shaft. Sorry to say but you should
Not be making videos about something you
know nothing about!!!!
@ Richard Givens
Thank you, what you are saying is very interesting. I disassembled and cleaned the assembly and didn't publish a video of it, except for the grease I did everything right. The setting back into the machine after assembly, how should that work? I am ready to learn something new. In my opinion, no adjustment can be made here, because the timing / pulsation is carried out via the green cam on the upper shaft. Here the point in time could be changed depending on the needle position. Perhaps you can explain this to me in detail so that in this case I do not pass on false information. Furthermore, I want to make a video that shows the disassembly of an automatic of a Julia 534 to make it clear what is important. It looks like I'm in need of help....
@ Richard Givens
ADJUSTMENT OF THE NUMBER OF IMPULSES FOR EACH TURN OF
THE CAM AXLE
Fig H9
While the machine is operated, the cam axle (upon which the
cams are placed) moves in short impulses. The cam axle makes
a complete turn of 360 degrees during the completion of one
design. While making this one revolution of the cam axle, a
complete cycle of a design is made. During this one full turn of
the cam axle about 30, 36, 60 or 150 impulses of the cam axle
take place, depending on the position of the marks " 1", " 2 ", " 3 ",
or " 4 " on the design graduating knob in relation to the mark on
the machine arm above this knob.
The adjustment of the number of impulses is made at the factory
and any readjustment is not necessary, even if the machine is
dismantled or reassembled again. It is only when the following
parts must be replaced with new ones, that the number of
impulses may change and a recheck of the machine may be
required: spring No. A 26/1/11, pulling drum No. C (A 26/3/6),
spring sliding plate No. A 26/3/17, movement regulating ring No. D
(A 26/3/15). The number of impulses which the cam axle
completes during one turn of 360 degrees must then be checked
again by following this procedure:
@ Richard Givens
Set the design graduating knob at " 4 ".
Turn the balance wheel by hand (or let the machine run very
slowly, holding the balance wheel back) and count the number
of impulses which the cam axle receives during one full turn of
360 degrees. If the number of impulses is between 135 and 165,
the adjustment is correct.
If the number of impulses is under 135, correct as follows:
Turn the balance wheel by hand and bring the thread take up
lever to its highest position; set the design graduating knob at
" 4 " (see Fig. 89).
Pull the cam connecting lever No. D (A 26/3/25) to its working
position (toward the arm of the machine), so that the screws " A "
and " B " are fully visible (see Figs. 89, 90 and 91).
Loosen slightly screw " A ", and also loosen very slightly " B ",
move the graduation pointer " C " slightly toward the " plus "
sign (see Fig. 90).
Fig.
90
Fig. 91
Now tighten screws " A " and " B ". d) Check again the number
of impulses as explained previously und-
er
@ Richard Givens
If the number of impulses is still under 135, repeat the
adjustments " A ", " B ", " C " and " D ". If the number of impulses
is more than 170 (for each turn of the cam axle), proceed as
explained in the second test.
If the number of impulses, which the cam axle makes during
one full turn of 360 degrees, is more than 165, correct as follows:
Turn the balance wheel by hand and bring the thread take-up lev-
er to its highest position; set the design graduating knob at " 4 "
(see Fig. 89).
Shift the cam connecting lever No. D (A 26/3/25) to its working
position (toward the arm of the machine), so that the screws "A"
" B " are fully visible (Figs. 89, 90 and 91).
Loosen slightly screw " A ", and loosen also very slightly screw
" B". Move the graduation pointer " C" slightly toward the
" minus " sign (Fig. 91).
Now, tighten screws " A " and " B ".
Check again the number of impulses of the cam axle during one
turn
of same, as previously explained under (2).
If necessary repeat adjustments " A ", " B ", " C " and " D ".
The adjustment of the graduation pointer " C " is very sensitive,
therefore, very slight changes of its position are required.
Horn to count the number of impulses of the cam axle.
The following instructions will help you to facilitate this
procedure:
Place the cam " 0 " (zero cam), or the gauge cam No. 10.2, on the
cam axle (instead of the regular cams).
With a pencil, mark a short line on the zero cam (or the gauge
cam No. 10.2) and then mark another short line on the mounting
plate of the “Automatic " device (see Fig. 92).
@ Richard Givens
Fig. 92
Turn the balance wheel by hand and count, one by one, the
number of impulses made by the cam axle. Stop the machine
when the cam axle has made a full turn of 360 degrees (when
the mark on the gauge cam No. 10.2 is again in line with the mark
on the mounting plate for the “Automatic ").
Instead of turning the balance wheel by hand, the machine may
also be run with the aid of the motor. In this case, however, one
hand should be placed on the balance wheel to slow down the
machine in order to distinguish and to count the number of
impulses.