Mechanism for mechanical timer

Hello everyone, My wife and I both feed the dog, but we're never sure whether the other's already done it or not.  (the food disappears pretty quickly)  I'd like to build a track with a slider that takes about 10 hours to slide from 'fed' at the top to 'not fed', and make it so that the slider is easy to slide back to the top. What immediately comes to mind is a counter weight escapement mechanism, but I though I'd hit up the brain trust to make sure there wasn't a simpler way to pull this off.  (I could also envision a timer chip hooked to a mechanical release, but I'd prefer to stay wholly mechanical for this one.) Many thanks!

Topic by oldmicah 


Mechanisms I've Made

Alright, I'll keep it short and sweet: Catch-up time. Mechanisms from '08-'10, all different versions. Why not a slideshow? 'Cause I hate them. More stuff coming up. Also, these are only a few pictures of each thing, there are many more of each of them (except the mechanical hand, unfortunately).

Topic by DB2016   |  last reply


realistic firing mechanisms.

Has anyone developed a detachable magazine with internal follower mated to a weapon which isolates the cocking and chambering of a round? i.e. the weapon is automatically chambered when the ram rod is cocked.

Topic by the rail man   |  last reply


New gun mechanism?

Howdy guys, i was looking on making a gun. But me being me, I dont want to make the same as everyone else. Is there a mechanism concept out there that has not been done yet that I could try? Thanks.

Question by Hiyadudez   |  last reply


Custom mechanical K'nex?

With all this 3d printing now days, and some of it is being used with K'nex I'm wondering if there are more things that need to be added to the range. Now i can understand that K'nex with its target at younger folks (the highest age they list is 9+) it probably isn't feasible for them to spend the time developing some things. And the things im talking about? Pneumatics More powerful motors Custom gears (sizes, rack and pinion, worm gears) Servos A more dedicated robotics system anything else i may have missed? Just peoples thoughts on whether this is worth pursuing, perhaps even make them for sale (please don't sue me K'nex)

Topic by jjefferson1   |  last reply


What Single shot mechanism is the most sturdy and is the easiest to load? Answered

Same as the title, which single shot mechanism is the most sturdy and his th easiest to load? EDIT:This was posted in the knex section for a reason ><

Question by Soopah Steve   |  last reply


How to make a knex gun with a real bolt mechanism?

I am planning to make a new knex gun. This gun is going to have a real 'bolt' which is used to load the next round. It will be pulled back and released which will push the round into the barrel like a real gun. The firing rod will be the same as usual but when firing, as the bullet is further forward would result in the bullet being hit rather than pushed leading to better energy transfer and better firing. I have experimented for a while but cant quite seem to get it to work properly other than the general mech. So if anyone has done anything like this or knows someone who has then please share. Thanks.

Question by White Shadow   |  last reply


New Pull-back Mechanism

I invented this new pull-back mechanism a few days ago. It uses a sort of lever to pull the ram rod back. You pull the lever, and the ram rod goes back. It gives you a great mechanical advantage when pulling back. Any thoughts, questions, comments or haikus?

Topic by DRADIS   |  last reply


knex gun trigger mechanisms ?

What are all the different kinds of knex gun triggers not just block and true triggers 

Question by sonic broom 


A Good Bullpup Mechanism, Anyone? Answered

I am looking for a good Bullpup mech to put into a gun like the one in the pic, or something of that sort. In other words, I am looking for an 'ible that has a great Bullpup mech. Give me the URL of the web page, and you may or may not be awarded best answer...XD

Question by The Red Book of Westmarch   |  last reply


Knex bolt action mechanisms?

Could anyone post a link to a bolt action mechanism or gun that doesn't require too many pieces. I have already tried the zkar v2 and the ar-4 but I didn't have enough pieces. I do not have any ball socket pieces and I only have one hinge pair. The ar-4 required too many tan locks. I also do not want to break any pieces. If there is not anything which can help me please post a link to an instructables of good, powerful gun that does not require many pieces, preferably a rifle. Thanks

Question by Hewwo...   |  last reply


knex firing mechanism thingy

I didnt look around much so this may be old news... you can just delete this if it is the idea is that when you pull back and a little up the bolt pops out of the barrel and rests against the front of the chamber, until you push down on the hammer, which puts the bolt back in the barrel again :P if you make it with reds or grays they bend a bit much but it still works the problem is that theres no real way to make it bolt-action

Topic by sethex   |  last reply


MAC 10 Mechanism Concept

Hey guys. Well, currently, didexo and I are working on a MAC 10. Some of you may have seen his 'ible on the mech he was/is planing on using, so I took that and make something more efficient than his was. I need help on four aspects. 1) Sights. I would really like to see more efficient sights. Ones that look more correct, in other words. 2) A good trigger guard. I truly could not figure out what to do on this score. 3) A good way to make the handle curve. 4) A good way to make the barrel. I cannot figure this out...kinda weird actually. This prototype shoot at least 40 ft., and I am convinced that it could look and preform better with some help from you guys. So, lets here some suggestions... -The Red Book of Westmarch

Topic by The Red Book of Westmarch   |  last reply



What is your favorite knex ball machine lift? Answered

I've been trying to figure out the best lift to use for my machine. I don't have enough chain pieces (24 is my amount), so I thought I'd ask around for other's suggestions.

Question by MechanicalCreationMaster   |  last reply


Information on mechanical switches for electronic circuits?

Text and photos on mechanical switches for electronic circuits

Question by    |  last reply


Artificial Intelligence VS Mechanical Engineering

This year I'll choose a study, and I'm still hesitating between Artificial Intelligence and Mechanical Engineering. Which one do you think is the best choice, and why?

Topic by merijnvw   |  last reply



Mobile video game idea and mechanics needed

I've been wanting to create a game for a while and have learned mot off all the aspects needed...modelling,texturing,scripting(my specialty)....what i need is a good plot and possibly mechanics i can do the scripting...i am looking to focus on a survival horror genre...so if the plots could be generated around that area it would be nice and appreciated

Topic by kofo_14   |  last reply


another full auto machine gun mechanism

Right this is just the mech of the machine gun you will have to make the mag/clip/barrel/everything.You may have seen this already on the comment on https://www.instructables.com/id/8-SHOT-KNEX-HAND-GUN-REVOLVER/?&sort;=NEWEST&limit;=50&offset;=50The comment with it was posted May 7, 2008. 12:25 PM.Basicaly the hammer is attached to a small cog, a motor or handle is attached to a cog with only 4 teeth(on each half) the 4 teeth will crank the hammer back then when it runs out of teeth it will snap back, it actually works(I would have posted but my sister destroyed it D= ) te only problem I had was the mag, I attempted to build a box mag, oh and the fact you need a metal rod for the handle/motor and for the hammer with gear on(I lost 3 red rods because it just twisted the hell out of them, it was impossible to use them again)So you can only make it with some sort of renforced rod, but overall it actually works.this is just a small step by step type thingStep 1sand down 3/4 of a small cog.Step 2to speed up rate of fire add speed up gears (optional)Step 3make hammer, lock canibalised cog onto a rod with hammerStep 4connect it to speed up gear/sStep 5add elastic band to hammerStep 6add mag, clip or belt. note: if you make belt the add timmed gears to the speed up gear.

Topic by CrazyCHRIS!!   |  last reply


what's wrong with block triggers?

What is wrong with the block trigger mechanism because I have yet to see a powerful gun without the mechanism. and the sear system has it's flaws. So what I think you hate is the mechanism and what do you think about the mechanism with the true trigger attached?

Topic by smidge147   |  last reply


ideas for k'nex guns

Hey guys ! between if you've heard of me or not, probably not, i really like building k'nex guns, and i have made a few decent guns over the past year. my best gun would be SABR (Sharir170's Amazing Bullpup Rifle, instructions posted), second would be triple S rifle (Sharir1701's Super Sniper, not posted), and third would be a full-auto rifle i haven't named or posted (it works on an amazing new mechanism that i discovered with my friend, but he begged me not to post it, and made me swear, so i can't post it or show it or even explain how it works (major soz)). anyway, i'm plain out of ideas, and i really wanna build some new guns, so if you'd like me to build something, anything, you name it, and i just might build it and post it. you might be asking yourself : why should i do this... i've never heard of this guy, and therefore don't know if he's any good, and he's not a pro member on 'ibles, so he can't send me a patch... all i have to say is that i've never given up on a k'nex goal i've set for myself and i just work on it on and on until i get it. and what you will get from this is the opportunity to build the gun you requested me to design, and get credit for the idea on the 'ible. anyway, if any of you have any good ideas at all, say so and i might build them, no matter how stupid you think they might be.

Topic by Sharir1701   |  last reply


Where can I find a wind up mechanism?

I need a winding mechanism for a project. This would be small toy sized. It would be optimal if it were multidirectional winding. Either way winds like a watch. Not a lot of torque so that small hands can wind it, but not as small as a watch winding mechanism or as complex. I would like to add gears to change the speed of the output or torque as needed. Or if anyone knows where a sawing type input such as a worm gear winding. Both of these would be super helpful. I can tear apart winding toys of course. In an information gathering stage right now. 

Question by caltman2   |  last reply


Random Knex challenge 3- Mechanisms! WINNER ANNOUNCED!

Hey guys! Yes, it is me again, and Im back with my 3rd challenge- knex mechanisms! :-) WINNER ANNOUNCED! SOORY TO SAY THAT HTIS CHALLENGE WAS NOT AS POPULAR AS THE OTHERS, BUT ANYWHOO, WITHOUT FURTHER ADO, I PRESENT THE WINNER: MIKSTR2 WITH HIS NEW TRIGGER MECH! CONGRATS, YOU WIN A PATCH ALONG WITH THE OTHER PRIZES I MENTIONED! Prize: A patch 5* on all of your ibles Fave all of your ibles Subscription from me :) Anyway, here are some rules for this challenge: Must be a new mechanism  Must be 100% Knex (string is also allowed  Things you can make could include: Gun mechs, roller coaster mechs(such as automatic gates), motor switch-on mechs,ect... Must be done by the 12th of dec. List of entrants for this round:   Killer~safecracker   -Entry- Mr.Doomsday (New bullet lock) and                                                   a way to make noise with Knex! Haon   -Entry- Seleziona   -Entry- kNeXFreak   -Entry- A new repeating crossbow mech (He asked me not to show a pic and                                     a new type of shotgun ammo (KFC ammo) Mr. Stealth   -Entry- TheDunkis   -Entry- Jollex   -Entry- Bigdylan91  -Entry- Mikestr2   -Entry- A new trigger mech Cm'on, you know you want to enter... go on, do it, enter! Hehe :) Anyway, good luck to anyone who enters!      

Topic by Hiyadudez   |  last reply


How can I make my own mechanical metronome?

I want an old-fashioned tick-tock mechanical metronome. Sure, I could buy one or make an electronic one, but I want to make it and I want it to be old school. I just can't find any designs that will help me make it easier...

Question by tommck   |  last reply


what is the most powerful semi-automatic knex mechanism that doesnt involve the slingshot action? Answered

I need a good mechanism for my upcomeing knex gun,please help

Question by smashpoe   |  last reply


Should i post this gun????

Should i post this gun???? it will be my first gun specifications: uses low amount of pieces uses a firing mechanism similar to the killerk srv1 firing mechanism, has a good range if you use a small rubberband defects: it is made with small pieces

Topic by gomas211   |  last reply


crossbows vs. slingshots

' Hi everyone, I'm chopstx, the creator of this group. today I want to start a discussion about which one is better: a slingshot mechanism, or a cross bow mechanism? do you think they're the same? please explain your 'answer thoroughly and carefully. bye

Topic by chopstx   |  last reply


l96a1 dimensions? Answered

I need to know the dimensions of the l96a1 as i am building a model one that i hope will fire bb pellets but i cant build it without dimensions or a firing mechanism. i may post an instructable if the gun is any good but the most important thing is the firing mechanism with a trigger. if you have any ideas please tell me  

Question by pinderfish   |  last reply


K'nex guns (RBGs or Rod shooters)

This forum is for anyone who can come up with an idea or can post a gun made from k'nex that works (does something) and resembles a real gun (or one from a video game)Also, you can post ideas or pics of guns you would like to be made by me (or anyone for that matter), and I encourage anyone to post a new loading, shooting, or feeding mechanism that is new to this site- ie: my lever action mechanism, or slide-cocked rod shooter (modification of mechanism by macbeasty)Make guns n have fun

Topic by HK.RBG.armorer   |  last reply


The storm 222 V1.0

I have a new mechanism for a knex gun, and hopefully a new storm 220. It can switch between semi auto and full auto and is chain driven. I won't give away the mechanism in case anyone beats me to it, but is there anything you guys could suggest I could add to it? edit: It is now posted with full instructions

Topic by The Jamalam   |  last reply


What mechanism can I use to make Lego technic rubberband gun fire without it having to reload after every shot?

Its pretty simple after an hour or so of fiddling with lego technic to make a working gun, but how can i make it not have to reload after every shot? Exscaly.

Question by Exscaly   |  last reply



knex paintball marker

I have made a paintball marker right now im working on a firing and clip ima prolly make it a airsoft shooter and use a firing mechanism ( TOP SECRET ) one, that when you fire the bullet the firing pin recocks so alls you do is pull the trigger the rod goes forward and back every second so the firing rate of the gun will be 1 pellet/sec. but i will not post because of the top secret firing mechanism

Topic by ClemensY290   |  last reply


How to tune a bell ?

I'm building a doorbell-operated carillon of bells, which will play the "Westminster Chimes" on a set of real brass bells (the sort with a wooden handle that you would normally shake). They will be hammered either by solenoid mechanisms, or by mechanical triggers, driven from a pinned rotating drum. My question is - Is it possible to change the pitch of a bell, either by removing metal, or adding metal (with a weld), without ruining the resonance or the tone of the bell ? - And upon what part of the bell would you perform this action ?

Question by and7barton   |  last reply


Is anyone skilled in metallurgical engineering?

*Yes, I know, another question involving college and my future life.*I am kind of split between mechanical engineer and metallurgical engineer. They both have some great benefits and trades that I'd love to go into, but it's difficult deciding which would be better for me.I do aspire, no matter what field I go into, to weld and do other metalworking, although I don't just want to weld for people. I know it sounds weird, but I like to take the time to know about what I am working on, and not work at "face value", if you will.So, any mechanical or metallurgical engineers who want to try to sway me one way or another, please do so now. ;-) Thanks,Bran.

Topic by Bran   |  last reply



New knex pump action idea

Ok, to start off, If you are wondering why I dont have a gun to demonstrate this concept, its because I just thought of this a few hours ago.So anyways, I have an idea for a pump action concept. This idea would work like thisthe rubberbands would be hooked onto the pump instead of the gun via Y connectors on the pump.when the pump pulls the ram back, the rubberbands do not expand or contractafter the ram goes behind the trigger, the pump is pushed forward, expanding the bands and giving the gun its powerthe pump hooks into a locking mechanismthe trigger is pulled, and either recoil or another mechanism hooked to the trigger unlocks the locking mechanism for the pumpThe advantage of this over other pump action guns would be that the pump would be easy to pull back, no matter how many rubberbands are on the pump.

Topic by DJ Radio   |  last reply


Hi-Cap horizontal magazine concept

Here is a concept I came up with a while ago. Basically, it is just a mechanism that allows a normal grey connector mag (I.e. One that would be used vertically) to be used horizontally, and so solving the problem of the low capacity of traditional knex horizontal magazines. However it is not without issues. The model used in these pictures is rather large, and there is an issue where the pusher cannot push the last connector out fully. Anyway, I thought I'd just I'd post this so if anybody is interested, they can use this concept and/or improve it so all issues are fixed. Just make sure to give me credit pictures: 1) overview  2/3)  overview of the mechanism 4) the red rod blocks the rotating mechanism so that no ammo falls out when not in use. Pull it out to initiate feeding

Topic by I.E.   |  last reply


First Tijme RPG

Hello, I have an idea for an rpg game and am a novice in the game mechanics. I'd like to do it in the pen and paper format. Does anyone have any thoughts/help?

Topic by Gagreg   |  last reply


solution?

Hi everyboody so the knex evolution seems to have reached its end however i think i have some ideas, and if everybody understands there will be enough new challenges for these types of guns. so the idea is: the bullets will be charged with energy to make them fly, not a ram rod or mechanism or whatsoever, just a piece of ammo with a rubber band on it. find a way to stack them up. this will make it harder to make a proper magazine but it'll be worth it. for example a dark grey connector with a rubber band, piled to any size of rod, attach all the rubber band to the top of the magazine and make a mechanism not to put energy in the bullet, but to release them

Topic by mahmel   |  last reply


What is this lego piece? Answered

What is this piece? it is two by two platforms joined by a span roughly 3 cm and flat like a baseplate, meaning there's no interlock mechanism underneath. The plastic looks like glow in the dark plastic.

Question by aaron.kuhlman.9   |  last reply


Knex PDR

Hello, this is my Knex Magpul PDR. It was pretty cool featuring a truly working bull pup mechanism (Credit to KnexBuild). It shot decent and held a good amount of ammo. It was too obese for me though.

Topic by Blue Mullet   |  last reply


Timer to flip light switch?

I need a timer that will mechanically operate a wall switch for a light. I've seen a device years ago for sale in the various "gadget" catalogs that did exactly this. It attached to the trim plate around the light switch using the 2 trim plate screws. A battery powered digital timer operated a mechanical slide to operate the wall switch. I can't find this device anywhere now. I know there are many electronic timers that replace the wall switch and have timer capability, most do not work with compact flourescent lights. I'd really like to find a timer for sale or get some ideas on a simple way to make such a device. Thanks for any help. Scott

Topic by tscottme   |  last reply


Is there a circuit board or FX module that mimics a Fender tremolo system that can be installed on the guitar itself?

I'm not referring to the amplifier-type Tremolo's as in Fender Amps, but a device that takes the mechanics out of a traditional tremolo set-up and digitizes the signal to do exactly what a Fender-Style Tremolo on the guitar does. In other word's, I would like to design a module or device that act's and performs by using the Tremolo Arm, as in slang term's, DiveBombs, Diving Harmonics or just about anything you can do with the mechanical Tremolo Arm itself. I've really been researching this, but so far no luck. Any info will be deeply appreciated...Thanks..Wayne6412

Question by wayne6412   |  last reply


Knex Steering Wheel

Is there a such thing as a K'nex steering wheel for the xbox360? As a example is where you put in your control in the Knex steering wheel mechanism and there have pedals and a steering wheel? Since I don't wanna buy the 100 dollar OFFICIAL steering wheel.

Topic by rexdino5   |  last reply


Game Idea: Dota Ultimates

I got some android game idea here.....! I need someone who knows in making android game! This will be an in-app purchase game....! I'd list the mechanics of the game.... Just need someone who can make it into a program!

Topic by hunter.yapching   |  last reply


Does anyone have the plans for creating an electric battleship game?

I am looking for directions showing how to build a basic electric battleship game. Nothing fancy.    Something you might picture in Popular Mechanics or Handyman. 

Question by adambensimcha   |  last reply


The K4: Long-Range Reinvented

Greetings K'nex community.  I know I have been dead for the past few days, but that is because I have been very busy working on my latest and greatest K'nex gun, the K4. Before I start, let me just point out that when I say "latest and greatest", I mean it.  This gun is all about innovation, power, and performance.  It utilizes a new breed of pump (a slide in this case) that runs along a track system, allowing it to maintain a firm grip on the gun without getting in the way of any other major mechanisms.  It also uses a new kind of ammo, a new bow system (which is not yet on the gun) that allows the trigger to be place in the front of the gun that keeps it from interfering with any other mechanisms, and many other mechanisms that you just wouldn't see in an ordinary gun.   At this point, it is not yet complete, the bow is still in the works but most of the more tedious elements have been taken care of. So now I'll just shut up and give you guys a peek at the K4!  Check out the video here

Topic by Kinetic   |  last reply


Off To College

Greetings fellow iblers! Well, the summer has come to a rapid close, and in 4 days (!!!) I am going to be off to the University of Rhode Island, studying the arts of Mechanical Engineering, Philosophy, and the Spanish language.   First off, I want to thank this awesome community (new members and old) for an awesome 4 year experience.  Despite some drawbacks, this is a community that has greatly matured as mechanical designers, and more importantly, as members of a team, throughout the years, and I am proud to have been a part of it.  Now, although I won't have access to K'nex, I will have access to a computer, to a pencil and paper, and to the resources that will strengthen and broaden my understanding of mechanical functions.  This is not goodbye quite yet.  I will still be very active among the community with comments and plan to continue my "Guide to the next generation of K'nex Guns" as long as I can find the time.  I will also be thinking up new mechanisms and concepts (that's going to be my job in college anyways) and will post designs as much as I can.  And who knows, I might just surprise you guys with something over Christmas break. *hint hint* I am going to try and get instructions up for my improved Kinno-2 within the next couple days.  It now holds 8 shots, has a locking mag release, and will feature a much better bullet mag, so keep an eye out for it. Again, thanks to everybody who has made this such a great experience, and while my methods may change a bit, I will keep working to engineer a stronger community, no matter where I may find myself!

Topic by Kinetic   |  last reply