Posted by The Older Gentleman on May 3, 2010, 11:57 am
> I think he means something else. Flat washers usually have more contact
> area on one face, and somewhat rounded edges on the other. Are link
> clips the same way?
Not that I've seen
>
> An instruction sheet that came with my RK chain specifically said to
> push inboard on the master link after installing it. Didn't say why, but
> with a little thought it makes some sense. Putting the flatter side of
> the clip against the chain also makes sense.
No, you push the master link inboard because the pins are tapered. It
holds the sideplate more firmly.
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Posted by Mark Olson on May 3, 2010, 1:26 pm
The Older Gentleman wrote:
>
>> I think he means something else. Flat washers usually have more contact
>> area on one face, and somewhat rounded edges on the other. Are link
>> clips the same way?
>
> Not that I've seen
In case it wasn't clear, Beryl was talking about the edge formed during
stamping. I'm pretty sure master link spring clips are made by stamping.
http://www.suwaprecision.com/Metal_Stamping_Articles/blanking.html :
======================================================================
Unlike machining, the surface finishing of the cut face is not uniform. There
are:
* Penetration - part of the material which has been pushed in by the punch
* Sheared face - face which has been sheared by cutting edge pushing into
the material. This face is burnished, smooth and shiny.
* Fractured face - face which has split due to crack development. This face
is uneven and rough.
* Burr - Sharp protrusion produced by the crack generated. This is located
at the side of the workpiece where the cut is completed.
======================================================================
There's a JPG showing the cross section of the stamped part, with a
detail showing the burr, etc.
http://www.suwaprecision.com/images/metalstamping/shear_cut_face.JPG
I would try to put the "square" edge of the spring clip so it is pushing
outward against the groove in the pins, rather than the rounded edge.
Posted by Beryl on May 3, 2010, 2:21 pm
Mark Olson wrote:
> I would try to put the "square" edge of the spring clip so it is pushing
> outward against the groove in the pins, rather than the rounded edge.
That's opposite of the way I was talking about. And it makes more
sense... except the clip can't possibly pop straight away off the pin
anyway, can it? It has to slide forward.
How do these things undo themselves when you put the clip pointing the
wrong direction?
Now I have to look at my clip with a magnifying lens and give this some
deep thought.
Posted by Mark Olson on May 3, 2010, 3:16 pm
Beryl wrote:
> Mark Olson wrote:
>
>> I would try to put the "square" edge of the spring clip so it is pushing
>> outward against the groove in the pins, rather than the rounded edge.
>
> That's opposite of the way I was talking about. And it makes more
> sense... except the clip can't possibly pop straight away off the pin
> anyway, can it? It has to slide forward.
> How do these things undo themselves when you put the clip pointing the
> wrong direction?
>
> Now I have to look at my clip with a magnifying lens and give this some
> deep thought.
I really don't know, or care how they fail since I never use spring clip
style links any more. Rivet links are more secure and are easy to install.
It helps to have a chain tool, but it's not strictly necessary.
Posted by Oscar_Lives on May 3, 2010, 9:52 pm
> Mark Olson wrote:
>> I would try to put the "square" edge of the spring clip so it is pushing
>> outward against the groove in the pins, rather than the rounded edge.
> That's opposite of the way I was talking about. And it makes more sense...
> except the clip can't possibly pop straight away off the pin anyway, can
> it? It has to slide forward.
> How do these things undo themselves when you put the clip pointing the
> wrong direction?
> Now I have to look at my clip with a magnifying lens and give this some
> deep thought.
Put the clip with the square edge "out" also!
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> area on one face, and somewhat rounded edges on the other. Are link
> clips the same way?