Umnum Lockup

I cant count all the customs that i have owned with lockups that go as deep as 50% and bind ...some so bad that you almost have to use a screw driver to release it....not all knife makers make the perfect lock....nothing worse than a frame lock that the lock binds.

IMO...Chris Reeve has executed a awesome design !!

And we all know that if theres ever an issue, Chris Reeve will take care of it as they offer some of the very best customer service in the business.

Have no fears folks....just use them as they are intended.
 
Sorry I have been away and I was not able to post the reply from Chris Reeves Knives:
I sent the picture in so they could see exactly what I was asking. I recieved a reply in less than 12 hours.


Thank you for your email and congratulations on your Umnumzaan. As you are probably realizing the Umnumzaan is a bit different then the Sebenza. On the Umnumzaan the interface between the titanium lock bar and the back of the blade is a ceramic ball, inset into the titanium just off the corner of the lock bar. In order for the ceramic ball to rest between 50-75% across the back of the blade the whole bar has to be a bit further toward the center of the knife. This is intentional and is the correct position. The lock bar of your knife is absolutely fine and completely within spec. Please let me know if you have any other concerns.

Enjoy your knife.

Heather

It's all good:thumbup:

now I have to read what you've been writing.:D



Now back to Busse Land:p
 
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Interesting.

It looks like O/P's lock is far enough over that the inboard tangent of the ball is in contact with the top slab.

As I think about this, and look at blackend's photos here: http://www.bladeforums.com/forums/showthread.php?t=587580&highlight=umnumzaan

Is seems like there would be very little tolerance in this lock at all. The lock bar has to move inboard in order to get the ball's forward tangent close to the center of the tang. On top of that, the inboard tangent of the ball extends beyond the inboard face of the lock bar.

It's like a stick with two short ends - at least as far as tolerance goes.
 
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