Kershaw Blur SG2 bad liner lock

S

sp5it

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Sep 3, 2008
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Found on youtube: http://www.youtube.com/watch?v=QchyfmbFI-g
At 1.50 min is demonstration of bad working liner lock.
New knife has bladeplay as well. After disassembling and cleaning nothing changed. Still has bladeplay and LL problem.
How it is in your SG2? Is this covered by warranty?
Mike
 
For warranty.

You can ship it here:
Kai USA ltd., Kershaw Knives
WARRANTY DEPARTMENT
18600 SW Teton Avenue
Tualatin, OR 97062

Along with a note describing desired service.

Alternatively, you can contact warranty (Dawn probably)
via this link and they can get you squared away.
http://www.kershawknives.com/contactus.php?brand=kershaw

or by phone & fax:
Phone: (503) 682-1966
Fax: (503) 682-7168

Beating the knife on the spine while holding it that way is not a smart thing to do.

Is this your knife in the video?

mike
 
Last edited:
Nope... Perfectly constructed SG2 here.... No blade play and rock solid lock up... Yours just needs to go back to the factory... Something has gone wrong... Plus... The knife wont function properly with too much blade play... Any knife for that matter... That guy is gonna loose a finger doing that!
Good luck... And way to snag the best blur to date!
 
Hi guys

To be honest - I was prette shocked when I've noticed that I can break the lock with just a light blow :eek: (yup - this movie was made by me)
But don't worry - I still have my fingers on place :p
Knife was cleaned and properly adjusted - pivot was tightened (I do not accept horizontal BP in knives :grumpy:)

While searching for the reason of lock malfunction, I've made some "knfe_pornography" photos (rather poor...)

In parts


No marks of breakage on stop-pin or it's nest.

Here's the blade's tang. And as above-no marks



Here you have the liner - also no marks different from the normal wearing.



According to Morgan from KAI Warranty Service - this situation is caused probably by hmmm... just read ;)

Morgan Tierney - Warranty Supervisor-KAI U.S.A.
I would like to say that I am shocked as well, but this does occasionally happen when the blade has been replaced on a knife.* It appears that you have a special blade in your knife, which might be the cause of the problem.* I will send you new scales and liner lock to try, to see if putting the blade in the new scales will fix your problem.* Many times when our repair person has to replace a blade for a customer, he has to try a couple of blades to make sure that it locks correctly and fits just right.

I believe that replacing the handles and liners should fix the problem, but I will include some extra pivot washers as well just in case.* Some customers have reported putting two or three washers on the side of the blade opposite the liner lock (the idea is to push the blade over the liner lock piece, making it more sturdy).

We will see how the knife will behave after lock's replacement.
 
How it is in your SG2?
Click to expand...

I've got 6 blurs. Every one is rock solid. I'm very lucky I guess. I'd never spine whack a knife on something hard with a lot of force. When you do get the lock to give, you damage it every time, more and more. You're basicly ruining your knife. So say the knife makers anyway.

A tap on something with a bit of give to assure you everything is working fine should be all that's done, and all that's really needed.

If you need something truly hard use that requires that kind of testing you might consider using a fixed blade for the strength.

Modern locks of all the major types have good reps from the good manufacturers. They are just folders though, and even the best won't do what even a smallish to medium fixed blade can.

The SG2 Blur is a slicer par exellance. It's not a extremly hard use, or MBC rated folder.

I trust mine to do what they are designed to do.

I love that SG2 steel too, BTW. Joe
 
Mine gets more pocket time than many of my knives, even though I try to rotate them evenly just because it seems to go with dress slacks better, which I wear while working. It works fine, locks up solidly, fires like a rocket every time.
Good luck in repairing/adjusting yours. Kershaw will make it right regardless.
BTW I didn't see the torsion bar in your pics. Is it missing, or just not in the frame?
 
I have a few SG2 Blurs, and have never had a single problem. Then again I don't beat them on a cutting board. Joe is correct on this - a spine whack does nothing more than damage your knife. It isn't a good measure of whether the lock will fail: beat on anything long enough and yes you will eventually break it. If you'd like to see how a professional (in this case STR, specifically post #2) tests the locks on the knives he works on and his opinions of the results of beating the spine of your liner lock knife on a table, cinder block, etc, read this.

Good Luck in the future, getting your knife straightened out and keeping your fingers attached to your hands without the need for stitches!
 
sixfoot7 said:
BTW I didn't see the torsion bar in your pics. Is it missing, or just not in the frame?
Click to expand...
Torsion bar is not missing - it just run out from the photo frame :p
SPXTrader said:
(...)Then again I don't beat them on a cutting board. Joe is correct on this - a spine whack does nothing more than damage your knife.(...)
Click to expand...
I've read the STR's posts earlier and yes, what he is saying - it is True (wriiten with the capital T). It's obvious that you can destroy a knife if you really want it, especially when talking about folder.
Like good old sentence says - if you really want, you can break everything. Even a steel ball... :D
Don't get me wrong - my intention wasn't breaking the lock, but just showing the difference between solid lockup and its total (and very suprising) ... lack? :)
 
My SG2 Blur is smooth and tight. I had it in my pocket yesterday and used it several times. Very nice knife. But like the others said, send it back to Kershaw, they will make it right.
 
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