4:30 As I have a degree in electrical engineering, I think I am qualified to comment on that. You are mostly correct on how it works, but it seems you don't quite understand the purpose of why they would do this. The purpose of using that sensor to sense the velocity (and not just position) of the driving motor. They use a concept called closed loop feedback control most likely, so that the position of your foot is directly proportional to the rate at which you are sewing. In 'control engineering' terms, you decrease the effective impedance of the whole system. To explain how this works, consider that the motor had no sensor or feedback, and your foot would be directly applying different voltage to the motor. If you now would load the output of the motor, the current would go up, and the speed would go down. So if you would be sewing through a thicker material, suddenly your sewing machine would slow down substantially. This is obviously undesirable. By sensing the velocity of the motor with a little computer, and adjusting the voltage/current to the motor, you effectively try to counter the decrease in speed because of the higher load. In short, this feedback makes it possible for a smaller motor to feel comparable to a large motor that just wouldn't be bogged down as much by higher loads. On 8:35 you might have misspoken yourself. The gear on the motor is not high torque, it is high speed. I think in general the best way of thinking about this stuff is not in torque/velocity, but as power. The power stays almost constant (minus some friction losses). Power is simply the product of torque and velocity, and what the belt + pulleys do, is merely act as a transformer. A certain power (small torque x high velocity) goes in, and at the large gear the same power comes out (but, high torque x low velocity). Intuitively it makes sense, as the small gear has to turn a lot of times before the large gear turns even once. Edit: Never mind seems you understand it correctly at 10:48. I definitely do agree with you that good quality polymers and plastics can be as good or better than metals, especially crappy pot aluminum and iron which shatters very quickly. 11:47 That belt is called a timing belt as well. Or more accurately, they are called "HTD belts". I also think those plastic gears matter a lot less, since they have to transmit not nearly the same amount of torque as the main shaft, of which the needle has to punch through the material. 14:18 It could be they are also doing some smart sensing, and just using those bigger indexes just to orient initially, and then use the sensor on the motor as finer control, as the motor turns a lot of times before the main shaft turns once. 15:26 Interestingly, this board seems to be an off the shelve product manufactured by delta. Delta is more commonly known for providing power-supply units and fans for industrial equipment. I wasn't aware they made control boards like this, and I am also surprised that Janome didn't design their own boards.
Wes, what a nice video to post, I have been curious about the newer Janome machines and how they are put together, in the past I have found Janome made machines well built with good quality in manufacturing and a good quality of plastic in the case. Thank you for this Wes !
I absolutely agree with you that today plastic is more robust and does not easily break down or crack. However, there could be other reasons for plastic gear breakdown, such as rubbing against a tough material (metal or another plastic gear) or gear misalignment. What Janome has done, i.e., to use plastic gears against belts is actually the total cure for them. Nothing is needed. It will last forever.
At first glance at a(*Juki*) Sewing machine on my part doing research the topof the line with Sewing machine and (*Galleries *).Until I met you,than I was thinking of getting the (*Singer*) (*9960*Sewing machine*) going two Joanna's the crafting store.Than finally I see that my research and what I can spend the Janome jw80100 jw80100 reviews sounds great posting here
I think the main motor is not a cheap motor controlled by electronics as you said, it is a high-efficiency brushless motor that has high torque (even on slow rpm) than other types of motors. Thanks
Correct, today's brushless motors can pack a punch vs old brush motors! Learned this with new cordless drills. The friction/drag caused by old brushes rubbing hard inside is gone allowing more direct power & it takes less energy to power brushless. One can't see this by looking at the case so its easy to dismiss this upgrade. I'd like to know the new/old motors hp/torque ratings. My bet is they're close to equal if not better today. Clearly last longer now.
A brushless motor would have three phases going to it, an an inverter with 6 mosfets driving it. For stable low-rev operation it would also have a magnetic encoder, not an optical one (because the magnetic encoder gives you position, and the optical only gives you rotational speed). There is no sign of any of these, so it's just a cheap universal or DC motor with an optical encoder to control speed.
I grew up with machinery and everything in me tell me to STOP & then go into Reverse, which is what I do. I see everyone going into Reverse on demand, how do sewing machines manage this without damage?
Merhabalar janome 5060 dc dikiş makinesi altına ip topluyor usta. Tansiyon ayarı tutmuyor. Ne yapabilirim yardımcı olursanız memnun olurum. Teşekkürler
How in the world do I get the side cover off My memory Craft 8000? It just stopped running like it had no power. The thread said that it has a fuse in it near the on/off switch. Does it?
my janome ss2015 stitch selector gear is broken. fo you think that is easily sourced and replaced? I looked inside and noticed a split hence why it was lose and not meshing with the bigger one to select stitches...I am on permanent straight stitch
Great video, thank you. 1) Its a Pulley if it has a Groove, Gear if it has teeth, both teeth/gear its a Pear or a Gulley? Well no its over built and thats good. 2) As a cert plastic tech your correct, plastics are much tougher now with some proving stronger than some metals unless sun/ozone degrades it. Most vehicles have used plastic (Phenolic) timing gears/brake caliper pistons for decades. The issue is low grade plastics being used where they shouldn't be just cause its cheaper or Planned Obsolescence! Think I saw cheap polypropylene/polyethylene (soft milk jug plastic) linkages inside Singer machines for instance, f-ing joke if it is! 3) Id love to see inside the Janome HD5000 or HD3000 if you ever find one? 4) Theres no drinking on the Job dude..lol Peace
Can you make a video on what the difference between a Heavy Duty Sewing machine (like a heavy duty singer sewing machine) and an Industrial machine are. I want to get an industrial sewing machine but it seems like the singer heavy duty sewing machine is just as good. What would you recommend?
He did. check out his videos on the singer HD, his dad's machine, and a couple of in between videos. you should understand the differences afterwards. happy sewing.
hi! pdrias hacer un video sobre como reparar una singer 7462 especificamente el la tarjeta elecronica trasera. espero que puedas traducir esto gracias!!
Love my Janome. I needed a light bulb for it but none was found. I searched and asked a Janome dealer giving them the model number etc. I have a Janome MemoryCraft 5500 and they said they never made it. Do you think this is true? I’ve sewn with this machine for more than 30 years....baby clothes to quilts, never a problem. Do you know when this machine was manufactured?
I am attempting to make my own hat, I only need a couple stitches and I was wondering if you would do a side by side of the singer Harvey duty and the janome hd1000, I am trying to get through a plastic brim and while the singer heavy duty does get through, I’d like to know if the janome is any better, otherwise I’ll be going up to a industrial
We accidently plugged 110v machine to 220v outlet, and heard a bang sound. Which part of the electric board would have been fried, and would it be repairable?
Full metal mechanical bodied machines are more durable especially when it comes to sewing leather, juki’s, the older singers and older BERNINA’s, sew thru leather like butter as they have metal gears and their motors have a decent torque compared to the others
Hello Thank you for the Video, I recently purchased a Brother brand sewing machine and 4 moths later the feed feet was feeding backwards. Will I have to bring my machine in for repair? And if so how much repair cost should I expect ? Or can I repair this myself? Thank you in advance. Leo ( Nommy)
I wonder if this is a common Brother issue. I've had mine for almost 20 years and it does that from time to time. I've finally given up on it and bought a Jenome machine.
4:30 As I have a degree in electrical engineering, I think I am qualified to comment on that. You are mostly correct on how it works, but it seems you don't quite understand the purpose of why they would do this.
The purpose of using that sensor to sense the velocity (and not just position) of the driving motor. They use a concept called closed loop feedback control most likely, so that the position of your foot is directly proportional to the rate at which you are sewing. In 'control engineering' terms, you decrease the effective impedance of the whole system.
To explain how this works, consider that the motor had no sensor or feedback, and your foot would be directly applying different voltage to the motor. If you now would load the output of the motor, the current would go up, and the speed would go down. So if you would be sewing through a thicker material, suddenly your sewing machine would slow down substantially. This is obviously undesirable. By sensing the velocity of the motor with a little computer, and adjusting the voltage/current to the motor, you effectively try to counter the decrease in speed because of the higher load.
In short, this feedback makes it possible for a smaller motor to feel comparable to a large motor that just wouldn't be bogged down as much by higher loads.
On 8:35 you might have misspoken yourself. The gear on the motor is not high torque, it is high speed. I think in general the best way of thinking about this stuff is not in torque/velocity, but as power. The power stays almost constant (minus some friction losses). Power is simply the product of torque and velocity, and what the belt + pulleys do, is merely act as a transformer. A certain power (small torque x high velocity) goes in, and at the large gear the same power comes out (but, high torque x low velocity). Intuitively it makes sense, as the small gear has to turn a lot of times before the large gear turns even once. Edit: Never mind seems you understand it correctly at 10:48.
I definitely do agree with you that good quality polymers and plastics can be as good or better than metals, especially crappy pot aluminum and iron which shatters very quickly.
11:47 That belt is called a timing belt as well. Or more accurately, they are called "HTD belts". I also think those plastic gears matter a lot less, since they have to transmit not nearly the same amount of torque as the main shaft, of which the needle has to punch through the material.
14:18 It could be they are also doing some smart sensing, and just using those bigger indexes just to orient initially, and then use the sensor on the motor as finer control, as the motor turns a lot of times before the main shaft turns once.
15:26 Interestingly, this board seems to be an off the shelve product manufactured by delta. Delta is more commonly known for providing power-supply units and fans for industrial equipment. I wasn't aware they made control boards like this, and I am also surprised that Janome didn't design their own boards.
Appreciate the backup on my engineering mistakes. Thanks for providing some in depth knowledge on this machine.
I think its a Brushless motor now correct? Less drag,less power needed to run? Motors last longer?.. So motor actually upgraded correct?
Thanks
Wes, what a nice video to post, I have been curious about the newer Janome machines and how they are put together, in the past I have found Janome made machines well built with good quality in manufacturing and a good quality of plastic in the case. Thank you for this Wes !
Loved the Bible Verse pop up!❤ and thank you for showing us the layout of the machine!
Love the popup definitions. thank you.
I absolutely agree with you that today plastic is more robust and does not easily break down or crack. However, there could be other reasons for plastic gear breakdown, such as rubbing against a tough material (metal or another plastic gear) or gear misalignment. What Janome has done, i.e., to use plastic gears against belts is actually the total cure for them. Nothing is needed. It will last forever.
my stitch selector gear is broken...
At first glance at a(*Juki*) Sewing machine on my part doing research the topof the line with Sewing machine and (*Galleries *).Until I met you,than I was thinking of getting the (*Singer*) (*9960*Sewing machine*) going two Joanna's the crafting store.Than finally I see that my research and what I can spend the Janome jw80100 jw80100 reviews sounds great posting here
I think the main motor is not a cheap motor controlled by electronics as you said, it is a high-efficiency brushless motor that has high torque (even on slow rpm) than other types of motors. Thanks
Correct, today's brushless motors can pack a punch vs old brush motors! Learned this with new cordless drills. The friction/drag caused by old brushes rubbing hard inside is gone allowing more direct power & it takes less energy to power brushless. One can't see this by looking at the case so its easy to dismiss this upgrade. I'd like to know the new/old motors hp/torque ratings. My bet is they're close to equal if not better today. Clearly last longer now.
A brushless motor would have three phases going to it, an an inverter with 6 mosfets driving it. For stable low-rev operation it would also have a magnetic encoder, not an optical one (because the magnetic encoder gives you position, and the optical only gives you rotational speed). There is no sign of any of these, so it's just a cheap universal or DC motor with an optical encoder to control speed.
I grew up with machinery and everything in me tell me to STOP & then go into Reverse, which is what I do. I see everyone going into Reverse on demand, how do sewing machines manage this without damage?
LOL I’m the same, stop, then reverse, not run at normal speed then hit reverse.
The disc on the motor is part of a speed sensor!
hi yes hello
you should review the Janome HD5000 :3
I only take pics if I find something unusual or if someone has attempted repair and/or broken something.
I thought I was good at fixing things.
I was dreaming.
😂rating you on your part of sewing machine. I HAVE FIRST EXPERIENCE IN GETTING A Juke
Merhabalar janome 5060 dc dikiş makinesi altına ip topluyor usta. Tansiyon ayarı tutmuyor. Ne yapabilirim yardımcı olursanız memnun olurum. Teşekkürler
How in the world do I get the side cover off My memory Craft 8000? It just stopped running like it had no power. The thread said that it has a fuse in it near the on/off switch. Does it?
my janome ss2015 stitch selector gear is broken. fo you think that is easily sourced and replaced? I looked inside and noticed a split hence why it was lose and not meshing with the bigger one to select stitches...I am on permanent straight stitch
What about entry level mechanical Janomes? How good are these?
Any Janome is good. Get one
I'm not sure on the plastic needle plate is there a small screw on the right or is that a empty hole with threads... I'm not sure
I think the empty hole is there for adding some type of accessory? Maybe a guide bar? I have it on mine too and am curious
Довольно познавательно, привет из Нижнего Новгорода🙃
Some bacteria eat oil and plastic. Maybe old plastic taste better? Non eatable oil might be substance which reduce that?
Great video, thank you.
1) Its a Pulley if it has a Groove, Gear if it has teeth, both teeth/gear its a Pear or a Gulley? Well no its over built and thats good.
2) As a cert plastic tech your correct, plastics are much tougher now with some proving stronger than some metals unless sun/ozone degrades it. Most vehicles have used plastic (Phenolic) timing gears/brake caliper pistons for decades. The issue is low grade plastics being used where they shouldn't be just cause its cheaper or Planned Obsolescence!
Think I saw cheap polypropylene/polyethylene (soft milk jug plastic) linkages inside Singer machines for instance, f-ing joke if it is!
3) Id love to see inside the Janome HD5000 or HD3000 if you ever find one?
4) Theres no drinking on the Job dude..lol
Peace
Would you do a similar evaluation of the HD3000, or comment on it please?
5000 is better
Can you make a video on what the difference between a Heavy Duty Sewing machine (like a heavy duty singer sewing machine) and an Industrial machine are. I want to get an industrial sewing machine but it seems like the singer heavy duty sewing machine is just as good. What would you recommend?
He did. check out his videos on the singer HD, his dad's machine, and a couple of in between videos. you should understand the differences afterwards. happy sewing.
@@rebeccal786 thank you!!
I have a Singer Heavy “headache “ Duty.
What about cheap chinese FSHM 505A . Can you do like this one. Tear it down and inspection on any thing
hi! pdrias hacer un video sobre como reparar una singer 7462 especificamente el la tarjeta elecronica trasera. espero que puedas traducir esto gracias!!
Love my Janome. I needed a light bulb for it but none was found. I searched and asked a Janome dealer giving them the model number etc. I have a Janome MemoryCraft 5500 and they said they never made it. Do you think this is true? I’ve sewn with this machine for more than 30 years....baby clothes to quilts, never a problem. Do you know when this machine was manufactured?
The dealer is a crooked. Call 📞 Janome bulbs is available. I think made in Japan 🇯🇵 or Taiwan. The best
Call the company
Not the /a dealer.
🤺💐
I am attempting to make my own hat, I only need a couple stitches and I was wondering if you would do a side by side of the singer Harvey duty and the janome hd1000, I am trying to get through a plastic brim and while the singer heavy duty does get through, I’d like to know if the janome is any better, otherwise I’ll be going up to a industrial
We accidently plugged 110v machine to 220v outlet, and heard a bang sound. Which part of the electric board would have been fried, and would it be repairable?
Yeah new control board
Tension 0:27
I have that sewing machine
How do you compare Juki to Janome /Brother / Singer? Is it the most robust for heavy fabrics?
Full metal mechanical bodied machines are more durable especially when it comes to sewing leather, juki’s, the older singers and older BERNINA’s, sew thru leather like butter as they have metal gears and their motors have a decent torque compared to the others
@@bluedeva thanks mate!
Hello
Thank you for the Video, I recently purchased a Brother brand sewing machine and 4 moths later the feed feet was feeding backwards. Will I have to bring my machine in for repair? And if so how much repair cost should I expect ? Or can I repair this myself?
Thank you in advance.
Leo ( Nommy)
I wonder if this is a common Brother issue. I've had mine for almost 20 years and it does that from time to time. I've finally given up on it and bought a Jenome machine.
@@gcooper642 What type of janome u bought?
I wana donate
Check out my Patreon!
Can you give it to me?? I don't have one 😭😭
@@nicolefabricante3719, click on the little ‘v’ that follows the title.
How to (lo)simbel solv
Can you fix my machine please
dear master please tell me how much you earn dollars per month? I myself live in Russia, I am very interested !!
Its easy to pick one model and run the entire brand down because you don't like the one you reviewed.
i agree with the bible passage at 1253
What is the reason for the Bible verse showing up on screen?
What a small motor wtf lol