[amayausers] Re: Needle rotation???
- From: "Marty Bies" <mbies@xxxxxxxxxx>
- To: <amayausers@xxxxxxxxxxxxx>
- Date: Wed, 22 Jun 2005 13:45:14 -0500
In training in Denver the instructor made it very clear that all
machines leave the factory with the needles straight ahead. He also
said that the test sewout is done with the needles straight ahead as
well. He compared turning them to advancing the timing on your car for
performance. You are changing the timing of the rotory hook to
compensate for the thread twist and other factors as Ed mentioned below.
We have gone back and forth and have not noticed much of a difference.
I usually put them in straight.
Marty
J2H Design
Elk River, MN
-----Original Message-----
From: amayausers-bounce@xxxxxxxxxxxxx
[mailto:amayausers-bounce@xxxxxxxxxxxxx] On Behalf Of Roland R. Irish
III
Sent: Wednesday, June 22, 2005 1:33 PM
To: amayausers@xxxxxxxxxxxxx
Subject: [amayausers] Re: Needle rotation???
Both the service tech that came here to test the machine, and John in
New Jersey, showed us that 'straight' needle is not preferable-that they
need the slight 'angle' or counterclockwise rotation. Wife agrees with
me that they both said FIFTEEN degrees but no one ever actually sat down
and measured it...my eyeball says if 'straight' is 6:00, then the angle
they showed us (and we've used it for a year) is 5:00. Now that I know
about what causes the 'tail' I'm going to watch out for over angle.
Setting any of them straight is immediate thread breaks and unraveling,
doesn't matter sharp or ball.
Roland
> From: "E. Orantes" <e3m@xxxxxxx>
> Reply-To: amayausers@xxxxxxxxxxxxx
> Date: Wed, 22 Jun 2005 13:23:45 -0500
> To: <amayausers@xxxxxxxxxxxxx>
> Subject: [amayausers] Re: Needle rotation???
>
> Roland,
> Wise men say, and this is for all embroidery machines, that the needle
> should be installed in the needle clamp so that the eye of the needle
> is straight front to back. It should be perpendicular to the rotary
> hook point as the hook spins around to grab the thread passing through
the needle eye.
> Very similar to the child riding the Merry Go Round horse reaching out
> to grab the big brass ring as he/she goes around (something I once saw
> in a 3D movie at Disney World).
> The only reason you would choose to rotate your needle so that the eye
> of the needle would be offset by 5 degrees or so is to compensate for
> thread that has entirely too many twists in it. Meaning that, as the
> thread tends to relax from being pulled straight as the needle begins
> it's upstroke, the thread would then twist slightly to the right (due
> to the standard cone wrapping direction) behind the needle and just
> out of position to be caught by the rotary hook point. What you would
> experience would be intermittent missed stitches and then possibly
> thread breaks due to an excess of top thread with no where to go, and
> only on those needles with the twisty type thread.
> I was recently working with some rayon thread from Madeira that was
> more curly than not. Although everything was sewing fine so we left
> the needles in their original positions.
> You would never want to turn your needle to the left unless your
> thread spool was wound backwards. (I have seen some out there).
> Also, I believe 5 degrees to the right is maximum that is recommended.
> Very slight indeed!
> Ed
>
> Ed & Maralien Orantes
> E.M. Broidery
> 900 Terry Parkway, Ste. 200
> New Orleans, La. 70056
> 504-EMBROID ery (504-362-7643)
>
> -----Original Message-----
> From: amayausers-bounce@xxxxxxxxxxxxx
> [mailto:amayausers-bounce@xxxxxxxxxxxxx]On Behalf Of Roland R. Irish
> III
> Sent: Tuesday, June 21, 2005 7:14 AM
> To: amayausers@xxxxxxxxxxxxx
> Subject: [amayausers] Re: thread breaks - help
>
>
> How about the angle the needle is 'turned' in the shaft? I've had the
> same problem (and now pretty much refuse to embroider on 'teeshirt'
> material-just takes too much work) and after checking everything you
> mention, I find my wife (who does most of the setup) isn't turning a
> new needle to get the 15 degree or so angle counterclockwise. Also, a
> tendency to have the plate just a hair to the left of dead center.
> Once I reset the needle and set the plate back to the right, usually
that stops it!
> Another similar problem was fixed when we started replacing the top
> rollers at the 2 million stitch mark-worst thread breaks were
> happening on the rollers with the most wear. Probably a combination of
> all 3 things but changing it helped!
>
>
>
>
>
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