Kershaw, another of my favorite big brand knife makers, now makes a line of balisong knives. They're the ones behind my really truly every day EDC, the Kershaw/Emerson CQC, and also the venerable Junkyard Dog and many others. Since I've always known them to make a decent quality and usually not too terribly expensive knife, I picked up the Kershaw Moonsault -- the funkiest looking of their current lineup.
This was also partially inspired by BladeHQ's "Best Butterfly Knives" list. The sibling to this knife, the Kershaw Lucha, prominently holds the top spot on that list. I figure I ought to see what all the hoo-hah was about, and the entire Kershaw lineup seems to be mechanically identical, so my thoughts here ought to apply more or less to all of them. Notably, they all have ball bearing equipped pivots. That's a big deal.
The ~~Moonsalt~~ Moonsault is actually kind of huge. It's 5-7/8" long closed, and a whopping 10-1/4" long when open. The blade is 4-3/4" from the tip of the handles to the business end, about 7/8" wide at its widest spot in the middle of the belly, and 0.150" thick at the thickest point of the spine. When closed the assembled handles are a good 1-1/16" across as well (not including the ears on the blade) which makes it quite a bit chunkier in the hand than most other balisongs I have the opportunity to compare it to. The blade is 14C28N, and the handles are also steel of some description so this sucker is heavy, too.
Weighing in at 171.4 grams (6.05 ounces), I think I'm right in saying that the Moonsault is the heaviest balisong knife I own. Without doing an exhaustive comparison, it may just be the heaviest folding knife I own, period.
Its ridiculon hugeitude sounds subtle on paper but it feels quite significant in the hand. Here it is compared to a Benchmade Model 42, which is pretty much the quintessential modern balisong. The Moonsault is noticeably longer, wider, and heavier. When swinging it around you are really aware of its length and weight.
The entire ensemble is done up in this rough stonewashed look which Kershaw calls a "working finish that hides use scratches." Well, so they may say. But mine already has some noticeable marring from where the latch strikes the safe handle, and I've only been fooling with the thing for a couple of days. My wife saw the finish and said it looks like it's galvanized, which I think is actually a pretty apt description. On the blade is Kershaw's usual assortment of logos, the model number (5050), and a Made In USA flag. There's a detail you don't get to see on a lot of balisongs.
The surface finish is superficially the same all over the knife. It's very matte, and kind of rough in the hand. There are all manner of channels and slots and other greebles machined into it, and while the outer edges of the handles are rounded over the surface still feels a bit snaggy in your hand and I feel like it doesn't roll very well in your grip.
The blade has a definite spear point sort of profile, ending in a very pointy tip. There's a false edge on the back for maybe about 2/3 of the length, but this is still a single edged knife. So it's safe to let the spine hit your hand while you're playing with it.
There is no pocket clip. Here it is from the side, looking through the scales:
Glamor shots. Here's the blade end, closed. The Moonsault does use a "kickerless" design with no need for kicker pins that are pressed through the blade.
In fact, where the kicker pins would be located on a traditionally constructed balisong are machined voids instead. Not that these really do much to make the thing any lighter.
Here's the latch end:
The latch, as you can see, is unfortunately just a standard friction fit T-bar arrangement. It's not spring loaded, and it's not a squeeze release. It's not too tough to bust loose with your pinky or ring finger, though. Due to it having no spring or any other clever mechanism, it just flaps around loose while you're flipping it, jingling all the way, and there's nothing preventing it from striking the other handle. Which is does... Frequently. It also has a significant amount of play up and down the pin it rides on, so it can actually rattle in two directions. It's perfectly okay when the knife is latched either open or closed but when the latch is free it feels a little chintzy.
The big headline feature of the Moonsault, and the rest of the Kershaw Lucha series, is that the pivots have ball bearings. And they do. You can just about see them peeking out between the blade and handle plates. (Don't worry, you'll be seeing more of them later.)
This makes the pivot and flipping action of the Moonsault incredibly smooth. The handles spin with what feels like, compared to other knives, absolutely no resistance. They just glide. It would probably be the best out of any balisong I own, except it's spoiled for me by the fact that the thing is so damn noisy.
This is what immediately struck me as soon as I started playing with it. Through whatever combination of blade and handle materials, their lengths, the mass of the handles, or maybe their shape, the whole thing just has some kind of resonance thing going on. If you tap it from the side when it's latched close the blade vibrates and rings like a tuning fork. The handles twang and bong and sproing nastily every time they rebound off your hand or the blade. The latch is always flapping away and hitting the handles, adding its own slap and jangle to the equation. The whole net result is loud and harsh and obnoxious. None of it is a nice noise. The vibrations from all of this go straight through the handles and make the knife feel really rough and unrefined, even though it clearly isn't -- the blade itself runs on those buttery smooth ball bearing pivots. It's just that as soon as you hit your first rebound, you really can't tell.
That's kind of a disappointment. Maybe I'll get used to it eventually. Or maybe I'll find some really thin knifemaker's Dynamatt or something to stick to the inside of the handles. But it's weird. No other balisong I own is like this, even the ones with single piece metal handles.
But enough about that. Dork smash!
There are now two things that failed to impress me about the Moonsault. There's quite a bit in there that does, but good lord -- Getting in there was not easy. Disassembling the Moonsault was particularly fraught because the handle pivot screws were cranked. I thought I might strip the heads before they let go, but ultimately I prevailed and I got the whole thing apart without breaking anything. The big pivot screws are T8 heads and the rest of the handle screws are T6. The handle screws are all the same as each other, and the rebound pins, latch pivot, and latch stop pins are all just that: Regular shouldered pins. I left one of the handle scales face down in that picture, by the way, so you can see the back of it. The backs are just flat, except for the pockets where the spacer pins go.
Here's them bearings. These are thrust bearings, and they provide a very low friction contact area between the blade heel and handles. Yes, mine came from the factory with some of the bearings concave side up, and some of them concave side down. I don't know if it makes a difference. I suspect it doesn't, although I was careful to put everything back the way I found it just in case.
The pivot screws are Chicago screws, and there is a subtle detail here in that the female end has a concave head, and the male threaded screw side has a convex head. Once you know this you can make your life a little easier if you ever feel like taking your Moonsault apart. I had to put a screwdriver in both sides simultaneously to bust them loose.
I didn't find any threadlocker on the screws, but as I mentioned they were on there good and tight. This is usually a bad idea on a traditionally designed balisong, because this will mash the handles into the blade so firmly that they won't pivot anymore. But the thrust bearings in this thing mean that even when the pivot screws are very firmly torqued the handles still spin freely.
I also found that one, but not the other, of my pivot screws had some kind of chalky crud all over the threads which make it even more difficult to remove. It wasn't threadlocker -- I think it was possibly the result of some kind of galvanic corrosion. So that's weird, and also somewhat worrisome. All of the other screws were clean. (You can just see this in the bearing photo. Look at the screw on the upper left, compared to the one on the right.)
As ever, one of the hallmarks of a good quality pocket knife is how precisely all the parts fit together. The Moonsault is kind of a mixed bag there. You can see where the cost cutting is happening: The rebound pins and latch pivots are plain pins whereas in fancier knives they'd be screws. And you could just about throw a cat through the gap between the pivot screws and the hole they pass through in the blade. This turns out not to matter much (see below), but it makes the mechanism feel a little janky when you're reassembling it. The tolerances on the pin through-holes are pretty good, but none of the pins are chamfered or anything so sandwiching the handles, bearings, and blade back together required a lot of jiggling and rocking back and forth before it all allowed itself to be lined up and mashed back together.
Another quick shortcut overall quality check you can make on a balsong is to see how much play there is in the pivots vertically to allow the tips of the handles to get out of square. Well, the Moonsault managed to impress me there. So much that I actually bothered to take a picture of it.
In this picture I'm pressing down with my index finger on one handle and up with my thumb on the other. And that's it. That's all the play present in the handles. They're exceptionally solid against the pivots, and I'm not entirely convinced most of that difference is not just sheer flex along the length of the handles themselves rather than actual play in the pivots.
That's the best I've ever seen, bar none. It's like 1/16". Maybe not even that. It's rock solid.
As before I'm doing this back-to-front, so the unboxing is at the end. The Moonsault comes in one of Kershaw's red and black cardboard boxes, similar to most of their other knives I've amassed over the years.
Really, I've got oodles of these damn things by now. They're all practically the same.
This is something I can get behind. The box is just a box, and it doesn't have any stupid complicated hinged parts, or double layers, or a hipster matte finish, and it doesn't come with custom laser cut pieces of foam and a sprig of parsley in it. It is a box, one each, holds and protects the knife tolerably well during shipping, that's it. I like to see that a manufacturer's money was actually spent on the product, and not the damn landfill fodder it comes in.
Sorry. Obviously I have Views about this sort of thing.
Inside that partition and rolled up quite tightly is a little double sided glossy leaflet. Usually I skip talking about the bumf because, really, who cares. But in this case I present to you scans of both sides of it below because I found a couple of points interesting.
The exterior contains a listing of the "complete" Kershaw balisong lineup, which... does not appear to include this knife. So that's a thing.
The inside makes at least some kind of attempt to teach you one way (of possibly an infinite number) to open and close a balisong knife. The instructions aren't great, and they don't really convey to the reader a good sense of the motion involved in my opinion, but they're something. And I've never seen a balisong from any other manufacturer even make the attempt. The pictures you get are your lot, and I can only imagine it would have raised the bill of materials cost significantly if Kershaw had invested in physically including a video in the packaging. (But not impossible! )
And again, the knife depicted in the pictures isn't actually this one. It's the Lucha instead.
The Inevitable Conclusion
I really like the Moonsault's ball bearing pivots. I really dislike just about everything else about it. Just, that twangy buzzy clankiness turns me off so much in the use and feel department. And that's really the entire point of a balisong. If we didn't want to have a fun and lets be honest, pleasant experience flipping it around we'd just use a normal damn folding knife. It's too big, and there's no clip or any provision for carrying it, and all that length means it would really be an unwieldy object to just keep loose in your pocket. No attempt is made, not even a little perfunctory nylon belt pouch. So it's impractical, too.
If I were king of the world I would keep these pivots, but bust the knife down to maybe a 4-1/2" overall length or so. Add a pocket clip. And do something -- make the handles out of a different material, dampen them with some G-10 scales, hire an acoustic engineer, I dunno -- to keep the damn thing from buzzing so much every time it rebounds. Would I add a spring release latch as well? Of course I would. I'd put a spring release latch on anything if I could get away with it.
At a $200 MSRP it's kind of tough to recommend the Moonsault when there are other balis out there that are in many respects better and much cheaper besides. But the value proposition on balisongs is always tricky, because the balisong collector's price curve and tolerance for paying silly amounts of money for silly knives is, lets be honest, kind of whack compared to that of normal people buying normal folding knives. I have mine, I'm keeping it, and it's going in the collection for sure -- but I'm not in a big hurry to rush out and buy its siblings to complete the set.