Inside A Double Action OTF Automatic Knife




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Did this video help you?

Liam Nordin: This video helped me so much in fixing my Rumble OTF knife. I could not for the life of me figure out how to hook everything up, but you explained it well. Thanks so much!

mrwhite4: @xiuxiu1313 Yeah I dunno that I would get one but I might it looks like it's a quality romanian rifle and I like the aluminum rail on the front. It does beg for an optic though your right. I still keep thinking "SBR ... SBR... " Those are just cool. I'd prolly use the standard Draco though so I can fit a standard AK style foregrip on it.

Blade Brotherhood: LOL, yeah. Definitly would not do that. A single action has more force, as the spring tention only goes one way and you fight against it to re-set it. But even the strongest sing action wouldn't penetrate far

russofamerica: YouTubers: The informative stuff begins around 1:52

decimator22: Lol whaaat?

Christopher Sharp: so is the retraction only gravity?

Whitevaliantwarrior: Thanks, I always wanted to disassemble my knife, I'm not sure why, nor do I care, but it sounds good>$#@&*__00--

Blade Brotherhood: @hockey4311 The OTF? I think I got this one off of bladeplay. Bladeops, bladehq, notyourmamasknives, assistedknife, aliexpess (china), and priceangels (china) all sell them.

YouBeenBaked: I still don't quite understand how it works. How can spring tension be created and reversed if there is only one type of spring in the contraption?

hockey4311: @xiuxiu1313 thanks

Patrix.U: I've got the same knife expect its black. Good to know the whole mechanics of it.

YouBeenBaked: I think the lighting is fine! Do you think you can redo this but go into more detail with how the slider shaft works, and the clips that go on the slider shaft? Also, do you think you can also specify how the blade actually gets moving (ie - Where/what it gets clipped on)? Thanks a lot!

Blade Brotherhood: I do care.

mrwhite4: @xiuxiu1313 I guess I do pick on nutnfancy alot but it's just alota fun to :) Hey have you seen those M10-762 AK's at all, what did you think of them? All it needs is a tapco collapsible stock to be totally mall ninja haha but seriously for 499 it looks neat and would be fun to own. I think if I wanted to make a tacticool AK I'd maybe do an SBR on a Draco and put a midwest industries handguard on it though.

blipblip88: neat. do you thnk they could make the case thinner?

michael987655678: had no idea nice vid man you did great

Blade Brotherhood: Maybe I will have to rej-do this with better lighting

WilhelmAQ: Sorry. I just find it strange to hear youtube videos start out with someone asking what's going on. Can't answer. I find it funny.

zeke323bellsouthnet: thanks helped alot!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Johnny Machuga: where did you buy this otf knife?

Blade Brotherhood: Sure thing!

Blade Brotherhood: Exatctly. And yes, there is only a small piece of metal on one side of the tang keepin git in the locked (and closed) position. However, I have a video out there where I hammer one through a piece of plywood.

David Lawman: Cool mechanics!

WilhelmAQ: Why do you ask what's going on when you really don't care?

lasgalon: lol that's y i'm cheeking out how there things work ammnra has some schematics on his flikcr page as well but just looking at it didn't make much seance

toonlink1995: im trying to make one of these. can you please open it, then leave the springs in and show me how this works?

Blade Brotherhood: @mrwhite4 Hell yeah!

Joshua Mormann: Thanks man! I've always wanted to know how OTFs were even possible. You're the first to show up on YouTube when I finally decided to find out. Super cool. Nice work. Now I feel silly for not figuring it out on my own. Makes so much sense.

Blade Brotherhood: Have you looked into the HK D/A autos? They are made by benchmade and run about 100

TotallyL337: LMAO what a weird comment

Robertron122: Please change yur profil pic. It's scary....

mikeusurper: So from what I gathered from the video am I correct in understanding that once the knife is 'activated' you are actually just releasing the blade from captivity and putting one of the springs under a small amount of tension, enought to send it out at speed then lock into its resting slot in the 'open' position. To sheath would be a reversal? ]If so then this is remarkably simple in its design yet effective, although it would not be an effective stabber but more a slasher.

daniel miller: Great video

Blade Brotherhood: @mrwhite4 I have seen those, and yeah, I agree. If you are going for a tacticool AK that is the way to go. Most of the work is already done for you. With the shorter sight radius I think you would have to go with some kind of optic on it though.

ffdp419: A bit confused. The spring is attached to the carriage from the front and from the blade on the bottom. The tension in the spring caused by the button shoots the blade up. What exactly does the bottom latch (keeping the blade "closed") do that allows the blade to deploy? How is the tension released?

darkchild57: Great vid man! It's nice to see that the Lightnings also have the same system. I have another MT coming in next week:) I looking forward to seeing your new MT as well. Take care. Thanks for the great shoutout I appreciate that!

hockey4311: Where do you get one

344airsoft: i get it now

Blade Brotherhood: Thanks for checking out the vid!

cactar6556: That was so simple.

ceezamuth: Lmao your so funny I just got mine today from blade play and right when I opened it I took it out turned it up side down and looked at the spike glass breaker and notice my blade just came out? Huh?, I thought I don't even switch the blade yet? I faced it back upright and the blade went back in lol

Robertron122: could u tell me a good and cheap material i could use to make one, coz i wanna try make the 'ammnra' hidden blade

MrGreat50cal: anyone els think about putting one of these under your rist?

mikeusurper: Likewise this would bust the myth that you could place against someones head and deploy the blade and it would penetrate the skull (as seen in old movies) as the force behind deployment is the maximum amount of tension you could impart through a 5cm spring under 5mm of travel or therabouts. Thanks for the video.

Kirill Cap: Я 1 русский?

mrwhite4: I can sit and play with these things for hours, dunno how tacticool they are, don't really care where they fall under nutnfancys "system" and don't really care... these things are just cool :)

MrFuzzytac0: Oh crap lololololol

reincarnatedGypsy: Could you add a link to this blade in the description or something? It'd be greatly appreciated!

Blade Brotherhood: Should I make it a kitty cat?

ffdp419: Would the latch at the front of the blade "release" due to the deployment of the button? So that both latches release simultaneously, releasing the blade?
Rating:
Inside a Double Action OTF Automatic Knife 4.6 out of 5

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Inside a Double Action OTF Automatic Knife