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Old 01-23-2014, 03:54   #1
Raleigh Glocker
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Rat Worx MRX Chain Drive Auto Knife

Though Rat Worx might be new to the knife market, they've been designing and manufacturing gun parts and accessories, aerospace bearings, custom surgical tools, and even robotic hands for a long time. In fact, they spent three years testing the MRX before finalizing on a design for production, and it shows.

Many look at the unique chain drive as a gimmick or potential reliability problem, but I show how the design works and why it makes perfect sense for a knife designed to be the world's strongest auto knife.

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Old 01-23-2014, 08:40   #2
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Interesting knife. I would definitely support a small knife maker like Rat Worx. Their knives seem to be of good quality and materials. This particular model looks like it's running $325 on their own website. Not a crazy price, but I don't know if I could drop that much on this particular model. I'd have to play with it hands on.
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Old 01-23-2014, 11:16   #3
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Great video as usual!

Innovative design, but I'm not a fan of the internal stop pin. It appears to create a few weak points on the blade. Same design as the stop pin in the Spyderco southard, which I saw broken earlier this week. I like the CPM-154 but overall the knife is excessively bulky. For $125 less I would take another Protech/Les George Rockeye. Cleaner lines, sleek, and plenty stout.

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Old 01-23-2014, 13:37   #4
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I agree about the stop pin, for that application I'd prefer blade mounted "stop studs" for the simplicity and ruggedness. On a Southard, I love the internal setup though.
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Old 01-23-2014, 13:49   #5
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The MRX is about 5x as thick in the area where the Southard probably first broke, maybe more. Don't be fooled by the silver finish on that area of the MRX- there is a lot of black Guncoted sprocket metal beyond that. Also, the Southard is CTS-204P, which while being great for light cutters, it is more brittle than CPM-154.

Rat Worx built a machine to test the durability of the MRX, continually cycling the knife open and closed. After 418,000 cycles, only the spring and the button needed to be replaced. The blade was still 100% in spec, and the knife tested as new after changing those two worn parts. You can see that test as well as a few others on Rat Worx very informal YouTube page:

The Les George Rockeye looks like a nice auto.
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Old 01-31-2014, 13:16   #6
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Definitely looks well built.
Thanks for posting that vid.
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Old 02-01-2014, 12:31   #7
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Looks like a neat "hey look at this thing" kind of knife. Unfortunately, to most people, including myself, the chain drive really comes off as a gimmick, even if it works.
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Old 02-01-2014, 12:34   #8
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jesse james would even think that's toolish.
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Old 02-01-2014, 15:02   #9
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Nice review
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Old 02-01-2014, 15:11   #10
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Great video!

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Dude, you are ****ing banned.
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