- Joined
- Jul 31, 2016
- Messages
- 86
There are a few things to consider here. Firstly, the NL is SRBS (single row bearings)--the same as older model F series--while the F3R is MRBS (multi row bearings)--like all R series knives\, but you know that. Secondly, there are differences in tuning and action between any two knives out of the box, even those of the same model. Thirdly, the NL is a frame lock knife while all F3's--R's and others--are liner locks. Lotsa variables with there including less lockbar pressure from from a liner lock than a frame lock which can result in snappier action.
From my own knives and experience of 3 weeks using the NL World Tour knife, I found the NL to be very close to my SRBS F95T in flipping action with the edge to the Turtle and the closing action very much in favor of the latter as well. Of course, my Turtle has been through thousands of opening/closing cycles and I spent time tuning it to get it just so. I also have an F95R with MRBS which flips open with very little provocation, but I'd describe its action as comparatively smoother and the Turtle as freer and snappier. Both those knives free-drop closed while the NL did not, but I didn't tune up the NL either before sending it along to its next stop.
My F3 is an older SRBS that flips out nicely and easily flicks or shakes closed but doesn't free drop. In general, all my Shiros flip out well and lock up solid, though my F3 was initially too early for my taste and developed a bit of lock-stick as it broke in which I spent some time curing. I think that getting the action on your Shiro the way you want is a matter of proper tuning--polishing all interior sliding surfaces; deburring the bearing cages; and getting all the grease out, replacing it with a lighter lube.
Thanks Chazzy - just getting around to fully digesting your response. As always your post is very thorough and informative, very much appreciate your contributions to the forum. I am just now finishing going through this thread from the very beginning so I suppose you can say the Shiro bug has bitten me hard!

For now I think my humble little F95NL is satisfying the full TI Shiro itch. I have found the action and blade centering is incredibly sensitive to pivot screw tightness which is unsurprising given the tolerances of Shiros. I have her all tuned up, lubed up, and with a smidge of purple loctite the pivot now stays in place for days of use without adjustment. A turtle very much interests me but I am going to hold off for now and depending on the price of the kickstop collab I may jump on that. A big boy Shiro has always interested me and the milling on the 110 is gorgeous.
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