M Size Bobbin Center Hole Inconsistency Question....

[kgg]

3 hours ago, Bmwmoa67707 said:

Since Gregg from Keystone Sewing responded here on this thread, I will give a big "thank you" to Gregg and his staff, ie, Lois, (the nice lady who answered the phone), and she said that she would take care of it, and we would have bobbins that fit correctly in a few days.  I must say that the communication, shipping and help with choosing the right machine and accessories.. working with Gregg and Lois, the whole experience was absolutely "FIRST CLASS!"

Nice to hear.

kgg

[Bert51]

8 hours ago, CowboyBob said:

You need to get the correct bobbin winder w/a longer shaft.

Bob, I have the correct winder for my Adler 105, what I meant was, when you spread the bobbin holder with a screwdriver as suggested by toxo to use the bobbin that I purchased with a larger hole, they are only held by 3 to 5 mm of a 30 mm long bobbin.

I purchased these bobbin as being for the Adler 105 and they are to loose to use on my winder. This has happened with two sellers in Australia. I returned one lot for a refund and he claimed he never received them by return mail.

Bert.

[CowboyBob]

On 1/11/2020 at 7:52 PM, Bert51 said:

Bob, I have the correct winder for my Adler 105, what I meant was, when you spread the bobbin holder with a screwdriver as suggested by toxo to use the bobbin that I purchased with a larger hole, they are only held by 3 to 5 mm of a 30 mm long bobbin.

I purchased these bobbin as being for the Adler 105 and they are to loose to use on my winder. This has happened with two sellers in Australia. I returned one lot for a refund and he claimed he never received them by return mail.

Bert.

Ok,I thought you meant 3-5 mm from the end so I thought it had a short shaft,which some people have tried to use.

[Bert51]

I get annoyed when I have a good sized bobbin and it winds uneven and you cannot get a full bobbin while sewing.

If I have to use these bobbins, I sit down and wind 2 or 3 before I start sewing and that to me is a waste of my time..

Bert.

[Gregg From Keystone Sewing]

There's a reason why Bob and I are explaining that poor quality bobbins are giving service issues for end users.  

For example, if you have a Juki 441 type machine and the side hole does not match up for your bobbin winder, it's a problem.  If you have a box of 100 generic bobbins and have are snug fit on the bobbin winder shaft for about 30 bobbins while the other 70 are lose, it's a problem.

But issues can go way beyond just winding a bobbin.  If you have for example a top load, vertical axis hook, say on an LU-563 or LU-1508, if the outside diameter of the bobbin has a large enough gap while sitting inside of the bobbin case, the thread can pop out and get caught around the bobbin case latch, and jam up the machine.  Incorrect bobbin dimensions also tend to over spin, a real problem say on an electronic machine that starts and stops quickly.  Often an aluminum bobbin can also help as it has less weight.

There are just so many times that a poor quality bobbin can be a problem.   

[Bert51]

You are right Gregg, that is why I purchased both lots from dealers. I sent one lot back to the dealer for a refund and I am still waiting, said he never got them?

If I have run out of old bobbins, I have to wind my bobbin before I start, so I can keep sewing.

Bert.

[RemingtonSteel]

My Ferdco 2000 Pro came with two bobbins, so I purchased an extra one to try out, before buying several, and encountered this same problem.  The replacement bobbin purchased was too large for a friction fit on the Bobbin Winder Spindle.  The solution, at least for me was a simple fix, and cost no more than a No. 1 paper clip. 

I cut the end of the paper clip that goes through the small hole flush with the inside surface of the bobbin side wall, so that it would not interfere with, or damage the thread. This solution did not involve any modification to the Bobbin Winder Spindle , and actually works well, at least for me anyway. 

[Wizcrafts]

3 hours ago, RemingtonSteel said:

My Ferdco 2000 Pro came with two bobbins, so I purchased an extra one to try out, before buying several, and encountered this same problem.  The replacement bobbin purchased was too large for a friction fit on the Bobbin Winder Spindle.  The solution, at least for me was a simple fix, and cost no more than a No. 1 paper clip. 

I cut the end of the paper clip that goes through the small hole flush with the inside surface of the bobbin side wall, so that it would not interfere with, or damage the thread. This solution did not involve any modification to the Bobbin Winder Spindle , and actually works well, at least for me anyway. 

That is friggin brilliant!

[Bert51]

Thanks RemingtonSteel, I must try that.

But as I paid top dollar for what I was told Adler Bobbins I should not have to.

Now all I need to do is workout a simple fix like that for the Singer 31K47 bobbins that don't wind properly.

Bert.

[RemingtonSteel]

On 1/16/2020 at 10:03 PM, Wizcrafts said:

That is friggin brilliant!

Thanks Wizcrafts. I have a light bulb moment every now and then.

 

On 1/17/2020 at 2:45 AM, Bert51 said:

But as I paid top dollar for what I was told Adler Bobbins I should not have to.

Bert, I agree!  When you pay good money for something, you want it to work right out of the box... period.

I am wondering how much of this is an issue with the aftermarket bobbins, and how much of it is an issue with the bobbin winder spindles on the various clone machines, at least on the 441 clones anyway?  I purchased a bobbin for Cobra Class 3, and 4 machines from Makers Leather Supply, as I was buying some templates from them anyway.  They sell Cobra machines, so I assumed that the bobbins they sell are the Cobra OEM bobbins (could be wrong as the bobbin is steel, not aluminum), and that they fit the Cobra machines perfectly. Yet the center hole is slightly too large for a friction fit on my Ferdco.  So either the bobbin is not OEM and not sized correctly for the Cobra's, or there is a difference in the diameter of the bobbin winder spindle between the various 441 clone machines on the market.  If it is the latter, that could make it hard to find bobbins that fit correctly without trial and error.