Members ExodusGunleather Posted September 1, 2019 Members Report Posted September 1, 2019 I just purchased a Cobra Class 4. After the first bobbin, the machine seems to be making a pretty good "clacking" sound coming from movement in the shuttle. Is this normal? Is there an adjustment? Can someone tell me what is happening? The video was just the machine running with no top thread. It is louder when I am actually sewing. Thank you, Carl Quote
Members Bert51 Posted September 1, 2019 Members Report Posted September 1, 2019 (edited) I do not have a Cobra Class 4, but I have an Adler 105 and it uses a similar bobbin system and to me it sounds normal. May be, putting a few drops of oil in the movement might quiet it a little, but it sounds normal to me. Bert. Edited September 1, 2019 by Bert51 spelling Quote
Contributing Member JLSleather Posted September 2, 2019 Contributing Member Report Posted September 2, 2019 Yeah, that's not a "direct drive" system... there's play in that shuttle/bobbin case area, which pretty sure is the "slap" you're hearing. Looks like the timing is fine... no issues there. Quote "Observation is 9/10 of the law." IF what you do is something that ANYBODY can do, then don't be surprised when ANYBODY does.
Moderator Wizcrafts Posted September 2, 2019 Moderator Report Posted September 2, 2019 Put a few drops of oil in the shuttle race. Are you loading the bobbins so the thread feeds counterclockwise? That may reduce some of the bobbin slap. Did you know that you need to remove the faceplate occasionally and put a few drops of oil into each tiny oil hole in the moving parts inside the head? Quote Posted IMHO, by Wiz My current crop of sewing machines: Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.
Members Bert51 Posted September 2, 2019 Members Report Posted September 2, 2019 When replacing a empty bobbin or changing thread colours, I normally give it a few drops of oil. Bert. Quote
Members ExodusGunleather Posted September 2, 2019 Author Members Report Posted September 2, 2019 Thank you all for your help. I will make sure to keep the race oiled and clean. I am sure I will learn to get used to the sound. Quote
Members ExodusGunleather Posted September 2, 2019 Author Members Report Posted September 2, 2019 14 hours ago, Wizcrafts said: Put a few drops of oil in the shuttle race. Are you loading the bobbins so the thread feeds counterclockwise? That may reduce some of the bobbin slap. Did you know that you need to remove the faceplate occasionally and put a few drops of oil into each tiny oil hole in the moving parts inside the head? Wizcrafts, I will definitely oil the race. I do have the bobbin thread feeding counter clockwise. Thank you very much for the response and advice. Quote
Mark842 Posted September 2, 2019 Report Posted September 2, 2019 That sound is completely normal. I have two Cobra 4's. One about 6 years old and one 2 years old. That is how they sound. It is the nature of an oscillating shuttle. Quote
Members Bert51 Posted September 3, 2019 Members Report Posted September 3, 2019 I have my bobbin, so when you pull the thread, the bobbin turns clockwise. Bert. Quote
Members Bert51 Posted September 3, 2019 Members Report Posted September 3, 2019 I just found this, which is different to what I do. Bert Quote
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