saralizk

Lucey vibrating

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I have a brand new Lucey and have only quilted on it for less than an hour.  At first it ran very smoothly.  It was not in use for a week.  When used again it vibrated, particularly the front of the machine head.  All suggestions, and more, have been followed.  Still bouncing; just doesn't run the way it did when first used.  Need help!!

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Also double check the level of the table, side to side at the front and back at both ends and the middle, and back and forth mainly in the middle, then closer to both ends, and at the ends..

 

Something loose is also a big possibility, wheels, rails, table, table legs, etc.

 

Pray you get it resolved.

 

Rita

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Dawn, still having shaking handles, and bouncing machine head.  We've followed all suggestions, checked everything, etc.  I had a friend who is quite a long-arm expert take a look.  She agreed that the machine is not working properly.  Sending the machine back to Iowa seems the only answer at this point.  I feel something must have loosened inside the head but we are reluctant to look inside.  It shakes more the faster I go.  What do you suggest? 

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hi Sara,

What type of table is Lucey on? If she is on a Bliss table, check to see if any of the adhesive dots that hold the Bliss rod to the frame have loosened from cold weather. These dots are specially formulated by the 3M Company for holding these pieces to each other, but on a couple of occasions when the rails have gotten extremely cold during transport the adhesive migh let go in a spot or two. This will allow the Bliss steel rod to potentially raise up slightly from its mounting groove, and that could cause the vibration.

If you find any loose spots, let me know. Often simply heating them up a bit with a hair dryer and then applying pressure will reactivate the adhesive.

If the table rods feel secure, then move the machine to one end of the table to further test it. Use a couple of the pony clamps if necessary and secure the machine so it won't roll as you run it. We want to check the head vibration separately from its association with the table to isolate the problem. Turn on the machine in manual mode with the motor speed set slow, and then turn up the speed slowly and observe the machine. Every machine has a point where the harmonics of the motor's revolutions and the motion of the eccentric of the fly wheel cause the needle end of the head to vibrate (kind of like hitting a tuning fork or finding the right pressure to run a wet finger around the rim of a wine glass to create vibration). Once you reach that harmonic point there will be some more noticeable vibration, but it will be greatly reduced at a motor speed slightly above or below that point. We want to determine if the vibration is related to that phenomenon or is different.

Of course, test all of the machine's covers to make sure they are tight and not rubbing or vibrating against the machine. You can squeeze the covers slightly to see if they are vibrating. If the machine behaves well near the end of the table, but vibrates when you move the machine, then we need to make sure the carriage axles, sewing axles, and even sewing handles are tight.

Try these things and send me an email to let me know what you find out, Sara. I can see those easily on my phone while out of the office. Thanks!


DA6F15FEDD9F8F152708CED82003B151.png

APQS Customer Service & Education Director

1-800-426-7233

dawn@apqs.com

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Dawn,

The adhesive dots are all in place--no problem.

 

  In manual mode, at 8 stitches/inch there is the amount of vibration one would expect when using a large machine.   At 9 there is a beginning of unusual vibration and by 9 1/2 the machine head begins to "jump" up and down.  At 10 the machine exhibits most "jumping" or "bouncing".  At 11 the "jumping" remains; at 11 1/2 it slows and then at 12 it becomes as smooth as it does at 8.   When the "jumping" occurs the handles vibrate to the point that the sensation travels to hands and wrists.  I don't know what you are referring to when using the phrase, "the eccentric of the fly wheel".  When you mention the "covers" are you referring to the outer metal of the machine?  If so, they are all tight, in place, and not vibrating.   I've also noticed that tiny dark specks appear on the cloth being used for practicing.  When touched, they smudge.  Obviously not metal, but something is being generated. 

   

Perhaps it is obvious that I am extremely disappointed, worried, and terribly frustrated at this point but I feel the need to make this clear.  Usually calm, I am losing patience and am angry.  This is not what I had expected from an APQS product.

Please note that when I first used the machine for about 30 minutes it did not have these problems.  It was not in use for a week and a half.  The machine was NOT moved, touched, or handled.  It was in a suitable area of a large bedroom.  When I began using it again the vibration was noticed.

 

  Thank you for your efforts in trying to find the solutions.

Sara

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Sara, did you find a solution to this. My new lenni does this as well. Vibration by about speed of 9.5 and calming down at a speed of 13 or 14. Problem is I want to quilt at a speed of ten or 11, and it vibrates and bounces so bad I can't see to quilt..

Thanks for any direction you may be able to provide.

Gail

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Gail:  There are harmonic vibrations in these machines.  They occur both at certain stitching speeds, and in certain machine front to back positions.  Try rolling you quilt a bit, so you can stitch with the machine closer to the take up roller.  Maybe that will let you stitch at 9.5 and reduce the vibration.  Good luck.  Jim

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