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 7 years ago


Mechanical iris

I have been looking for a way to create a similar mechanical iris like this one. I tried some things but I'm just completely lost on this one. You guys any ideas?

Topic by Leooow 7 years ago  |  last reply 7 years ago


The Boy Mechanic

Found this:The Boy MechanicIf you look at it, it seems old hat, but a few Hidrogen Generators, countless Photo projects, a real cool Turbine, and a pair of Lathe How-tos, along with an Aluminum Casting one, I find it interesting to say the least....And a Stationary windmill, that turns no mather where the wind comes from!

Topic by Edgar 12 years ago  |  last reply 12 years ago


Be your mechanic

Hello to all the magnanimousStudent professors and those who work in their own businesses Do not be tired of your loved ones. My name is Amir 48 years old and I have almost 32 years of experience in mechanical testing of cars in Tehran. I'm very interested in electronics and I repair almost 70% of my belongings But I did not attend classes in any classroom that I learned early. I'm glad to be among you I'm also happy to be in touch with mechanical questions Thank you

Topic by aryyyya1349 8 days ago  |  last reply 4 days ago


New Mechanism!

I made a cool mechanism. I don't know what it can do, but maybe someone will find out. Here is a video. I also updated the pictures and video.

Topic by Mintyhippo 11 years ago  |  last reply 2 years ago


Defence Mechanism

This is a simple structure that goes across your door and if some one walks threw the wire(fishing line)it lainches at that person. There are 2 guns that shoot on on each tower.!@#$%$%& check out my other knex intructibles &%$%$#@!

Topic by RunningBrave 12 years ago  |  last reply 12 years ago


Sear Mechanisms

I have tried to build a sear system on some of my guns, but it is so hard! I built one that kind of worked but couldn't fit on my new rifle that i just made (i might post but has a block trigger right now). Who knows how to build one of these sears, and is it really worth it? What if a block trigger just works better?

Topic by Mintyhippo 11 years ago  |  last reply 11 years ago


mechanical wave

I'm trying to build a tail of a fake animal, and the tail is kinda long (total length of about 3 feet), I have a 10 pound pull solenoid and I want the tail to kind of do a wave thing, like if you were do a wave with your arms ( not in a group, all by yourself where you hold your hands together, you know what I'm talking about). I know how to do the electronic part of it by sending pulses to the solenoid, but How would I convert that into a believable tail?

Topic by guyfrom7up 11 years ago  |  last reply 11 years ago


Mechanical timers - wind up mechanism

Can anyone advise what is the maximum length of time the mechanism on a mechanical hand-wind timer can last for (approx range will do) i.e between 60/70 minutes, 3/4 hours.

Question by MMAM 8 years ago  |  last reply 8 years ago


Need help to design mechanical mechanism

Hello everyone, I want to create feeder cart with seperate section, that will be hangin on rails.  Feeder cart will have four positions: First one (First load) will be bottom gates closed, middle gates open to the top. Second (Second load) will  be bottom gates closed, middle gates have to be locked in horizontal position. Third  position (First unload) bottom gates open, middle gates have stay locked. Fourth position (Second unload) bottom gates open and middle gates also open, that stuff drops out. I want ask you advice how to design bottom and middle gates open, closing and locking mechanical mechanism (without any electronical parts). This feeder cart will be operating by one man.  I have created middle gates mechanism, but maybe you have better solution.  I really appreciate for any ideas. Sorry for my english mistakes. English is not my native language. Link to my feeder cart design:  https://cad.onshape.com/documents/9bf2057d221de0e07143093b/w/42b5cff40a9a1fb3bed3cb14/e/cbc213062709ad380b4cb17b

Topic by DonatasD4 1 year ago  |  last reply 1 year ago


Mechanical wall sculptures

These mechanical sculptures by Brett Dickins are awesome. I'd really love to see his workshop with a bunch of these moving at once. via BoingBoing

Topic by fungus amungus 8 years ago  |  last reply 8 years ago


Mechanical pencil basics

If you want  to enjoy life, you should make mechanical pencil guns and launchers. All you need to do is take the mechanical pencil out and add springs however you like and you can make a gun thing.

Topic by XxAwesomexX 9 years ago  |  last reply 9 years ago


alternator control mechanism

Im planning for a project on alternator control mechanisms. can anyone provide me relevant ideas about the topic?

Question by Puranjay Menon 4 years ago  |  last reply 4 years ago


Mechanical Engineering Assistance

I am a mechanical engineer and solidworks expert with over 10 years experience in new product design and development. I offer services for hire and free advice when I'm available. Feel free to contact me for advice or assistance.

Topic by lymanjbishop 6 years ago  |  last reply 5 years ago


Alternative Clock-Mechanical

I need to build a device for a competition that can measure time acurate to the tenth of a second, but from its starting position it must be no more than 30cm in dimension, but can exceed that once it begins.  Even if you know of something that can do seconds that would be fantastic.  If you have any ideas or places to find plans please do tell.  IT CANNOT USE ELECTRICITY

Topic by danielsb7676 9 years ago  |  last reply 9 years ago


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 7 years ago  |  last reply 7 years ago


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 5 years ago  |  last reply 5 years ago


Handlebar Lawnmower Mechanism

Hello Community, I would like to know if someone has any idea about how to design a mechanism that works like this one:By pressing a button, I should enable the rotation. Whitout pressing, it should be locked.Thank you!!

Question by FedeR3 1 year ago  |  last reply 1 year ago


Firing Mechanism help

I need help making a firing mechanism. I made one of the bamboo stick shooter with a pen and a rubber, but then I taped the whole thing on a tube of paper for stability and aim. Any ideas? Please, if you can, try to make one with mainly paper and no Knex pieces? Thanks in advance if you can.

Topic by cesarpi 12 years ago  |  last reply 12 years ago


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 7 years ago  |  last reply 7 years ago


Alternative clock-Mechanical

I need to build a device for a competition that can measure time acurate to the tenth of a second, but from its starting position it must be no more than 30cm in dimension, but can exceed that once it begins.  Even if you know of something that can do seconds that would be fantastic.  If you have any ideas or places to find plans please do tell.  IT CANNOT USE ELECTRICITY

Topic by danielsb7676 9 years ago


Theo jansen mechanism

OK, I finally got hold of measurements for theo's strandbeest. these come directly from theo himself which means there accurate however it also means they're not in English. the numbers are there and they're easy to figure out, but it would be nice to know what the paragraph beside them says. so if any can read it, please post a translation. thanks

Topic by budsiskos 10 years ago  |  last reply 8 years ago


theo jansen mechanism

OK, I finally got hold of measurements for theo's strandbeest. these come directly from theo himself which means there accurate however it also means they're not in English. the numbers are there and they're easy to figure out, but it would be nice to know what the paragraph beside them says. so if any can read it, please post a translation. thanks

Topic by budsiskos 10 years ago


Rotating stacking mechanism

Hello everyoneI'm working on this project for school but got a problem with the final part. The thing is, we want to have the big panels rotate so they get stacked. Every panel needs to stop a the exact place.Anybody has a idea for this system? It will be run by an electric motor.Thanks EveryboyI have include 2 photos that show what should be happening. Also a zip with the solidworks parts and assembly with mates

Question by JonasV32 1 year ago  |  last reply 1 year ago


DIY mechanical Iris ? Answered

Hello all, Im going to try to make a mechanical iris out of wood and make it the lid to a box type thing, as seen here http://www.thingiverse.com/thing:4551, but i need a diagram or outline of what one of the shutter pieces looks like, I would like there to be only 5 shutter pieces, and i would like it if they didnt over lap each other, but any diagram of one might work, PLEASE HELP if you can. Thanks! ~captain molo

Question by Emsaid 8 years ago  |  last reply 8 years ago


Redirecting a mechanical force? Answered

Hi, im looking for some help with a physics/engineering type problem. Im looking for the most effective method of tranfering a mechanical force from one direction to another. For example if i had a 1" horizontal rod struck on its east face which then begins to travel westward on a fixed horizontal track, im looking for a method of transfering the energy (not sure if thats the right word) in the opposite direction. A few important factors are that the rod which is struck does need to travel around 4 inches on the fixed rail, and any vertical movement needs to be kept to a minimum. Below is one of my early ideas, serves little pupose as the mechinism is too large but gives you the jist of what im talking about.

Question by Squibo 9 years ago  |  last reply 9 years ago


Mechanical Cover Flow

I was thinking of a project for a type of shelf for your CD jewel cases. It would be a way of presenting CD covers in a similar way to iTunes 7's cover flow. (see http://upload.wikimedia.org/wikipedia/en/a/aa/CoverFlow_Screenshot.png) You could mount the cases and have a slider to flip through your CDs. Anyone know how this could be achieved?

Topic by spinach_dip 12 years ago


Mechanical Cover Flow

I was thinking of a project for a type of shelf for your CD jewel cases. It would be a way of presenting CD covers in a similar way to iTunes 7's cover flow. (see http://upload.wikimedia.org/wikipedia/en/a/aa/CoverFlow_Screenshot.png) You could mount the cases and have a slider to flip through your CDs. Anyone know how this could be achieved?

Topic by spinach_dip 12 years ago  |  last reply 10 years ago


Help: Mechanical Odometer

I have a bicycle trailer that I use for groceries and such, and hope to use for extended bicycle trips. I would like to get or construct an odometer for the back of the trailer, to advertise how far I've traveled. I've looked around a lot, but have had difficulty finding an non-electric or large-display DIY odometers (ideally, I would like the numbers to be 2 to 3 inches tall, and would like to keep it below ten pounds). I would prefer it to be mechanical only, requiring no batteries or electrical power, but am willing to give on that point for the sake of simplicity of design, weight and cost. If you have any advice where I could find advice or instructions on how I might set something up, I'd greatly appreciate it.

Topic by dreamclassier 4 years ago  |  last reply 4 years ago


Electronic feeder mechanism

I am currently building a pitching machine (I'm trying to do it for less than $150) and I'm having trouble designing an electronic feeder mechanism that will advance one ball at a time. I thought about cannibalizing a cheap R/C car for a transmitter, receiver, and servo but I'm not sure that will be strong enough to move the prongs when they are under a load. I only have $50 left to stay under budget (I already have all the support materials and the motor/wheel) and I have very little experience with electronic components. It seems to me that a R/C solenoid should do the trick with springs on the prongs to return them to the staring position but my brother tells me that $50 is an unreasonable budget. I really want to get this figured out on the cheap so I can show my brother (the electrical engineer) that it can be done!

Topic by barsmith 8 years ago  |  last reply 8 years ago


A question for experienced mechanics

I  know someone who has a newer model of the Dodge Ram with a Hemi V8.  It has a special gas-saving feature which turns off 4 of the cylinders when it is at highway speeds.  I was wondering if this was a practical idea to do to an old 350 small block.  I know that you could just unplug the spark plugs to 4 cylinders.  Of course, you would have to do something to release the pressure also. (I was thinking of removing the entire spark plug.) I am not very experienced in auto mechanics so I was wondering if anyone here could figure this out.  PS : This option of shutting down cylinders was also available in older Cadillacs I beleive it was called the 4-6-8, which shut down either 2 or 4 cylinders.  This engine however, was known for it's problems, which is why I was wondering about doing this.

Question by jules15 8 years ago  |  last reply 8 years ago


An Exploratory Research Mechanism

Designed and Built by Emile Cole Range of Motion Video (profile).... http://www.youtube.com/watch?v=P_vF3...layer_embedded Range of Motion Video (front).... http://www.youtube.com/watch?feature...&v;=E7CEwnOFnCk   Hello all.... I've been working on this (hobby status) on and off over the last fifteen years or so.... a mechanism that immediately begins to rotate in either direction with an imbalancing displacement of as little as one degree. With repeated periodic displacements of as little as five to seven degrees its rate of rotation rapidly approaches about a 100 to a 150 rotations per minute over the course of just eight to ten repetitions, all while overcoming only negligible frictional resistance from the main axel (equipped with bearings). It may have some applications for extracting rotational motion more efficiently from wind and wave and maybe a couple of other things too.... or it may just be a work of art.

Topic by EmileCole 6 years ago  |  last reply 6 years ago


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 2 years ago  |  last reply 2 years ago


Mechanical washing machine.

I work for a charity with Aboriginal Australians in the remote outback of Australia, a place called Arnhem land, it is worth a google. People need washing machines, they buy them, they break , even with warranty cover, they can not be fixed as no service men will come here to service them, we are too remote.  Houses here have about 20 people living in them, there is no work here and people live on small government payments which are not enough to cover daily expenses. Due to the difficulty in accquiring and maintaining a working washing machine, health issues such as Crusted Scabies have taken hold here, and cause much suffering. We can't erradicate the disease here without getting working washing machines. We need a solution, an easy to use, easy to fix washing machine. No electronics. Cold water only is fine. Possibly even hand operated, or wind operated (or other)  I found one which is a plastic  tub which turns with a handle and stands on two feet.  However the construction too flimsy, the tub not big enough for a bed sheet, it was green though. Didn't use electric power. Anyone have any ideas? Know any other sites I could post on to get ideas? Thanks : )

Topic by lisafromnz 6 years ago  |  last reply 6 years ago


Total Views Count - 07/10/2010

Another Thursday, another total views group roundup run.... News: - Killerjackalope's falling behind in his competition with gmjhowe to race to 250k views gained. - I beat Ninzerbean in our 100k gain race. Another one soon we think! - It appears scoochmaroo's obsession with Gaga this week gave her the biggest gain of anyone this week! Instructabler 30/09/2010 07/10/2010 Gain canida 3,658,688 3,688,789 30,101 scoochmaroo 2,743,528 2,791,711 48,183 Kiteman 1,640,632 1,649,815 9,183 Plasmana 1,500,418 1,509,187 8,769 Tool Using Animal 1,492,640 1,499,301 6,661 zieak   924,549   killerjackalope 895,559 901,137 5,578 gmjhowe 875,390 891,803 16,413 SaskView 763,716 768,480 4,764 lemonie 705,301 714,230 8,929 PKM 486,453 489,670 3,217 ChrysN 467,936 475,469 7,533 mikey77 461,238 464,585 3,347 jeff-o 393,752 419,863 26,111 laxap 398,350 401,909 3,559 depotdevoid 305,107 311,104 5,997 Jayefuu 278,139 301,168 23,029 Spl1nt3rC3ll 267,475 268,638 1,163 KentsOkay 230,666 232,128 1,462 ModMischief 225,973 231,375 5,402 reukpower 223,387 229,141 5,754 Doctor What 198,248 199,415 1,167 AngryRedhead 170,607 172,694 2,087 comodore 144,781 145,747 966 Lithium Rain 133,157 134,409 1,252 Ninzerbean 126,763 131,753 4,990 yokozuna 130,989 131,462 473 Kaelessin 125,729 127,406 1,677 Lynne Bruning 119,533 120,889 1,356 The Jamalam 114,665 115,164 499 BrittLiv 112,942 114,993 2,051 Hiyadudez 110,259 112,427 2,168 bertus52x11 104,099 105,669 1,570 thermoelectric 88,916 89,925 1,009 Goodhart 81,413 82,665 1,252 DJ Radio 78,886 80,081 1,195 janw 70,156 70,955 799 RavingMadStudios 65,922 69,024 3,102 MichelMoermans 52,214 53,242 1,028 Killer%7ESafeCracker 49,646 50,803 1,157 TNEN 42,863 43,218 355 kelseymh 41,403 41,650 247 Sunkicked 40,495 40,894 399 beckervdejazz.com   35,204   Berkin 33,354 33,747 393 Shadowman39 27,963 31,415 3,452 knuckel 26,206 26,738 532 The Ideanator 24,618 25,616 998 nickodemus 23,646 24,173 527 m6233555m 22,524 22,633 109 peguiono 21,099 21,390 291 artificialintelligence 20,177 20,655 478 Knex_Gun_Builder   20,041   MotaBoi 18,509 19,856 1,347 plane phanatic 18,381 18,556 175 Derin 18,037 18,233 196 Rsbarr96 17,895 18,052 157 TSC 17,094 17,697 603 possum888 16,809 16,963 154 steveastrouk 15,669 15,814 145 jwystup 14,324 15,797 1,473 zascecs 15,708 15,782 74 tombuckey 14,976 15,117 141 kcls 12,069 12,966 897 knexsuperbulderfreak 12,747 12,834 87 jen7714 10,588 12,296 1,708 uberdum05 11,145 11,248 103 floris2burn 10,820 11,057 237 Legofanatic 10,501 10,764 263 NachoMahma 10,086 10,143 57 masterochicken 9,363 9,449 86 FrozenStar   9,332   qazwsx755 8,231 8,636 405 acidbass 7,636 7,799 163 lizzyastro 5,789 5,965 176 Kryptonite 5,644 5,747 103 cherishcherub 4,544 4,751 207 zero.gx 4,303 4,367 64 jamesdude 3,565 3,613 48 moocowdog 3,419 3,541 122 Jimmy Proton 2,605 3,064 459 megametal8 2,482 2,551 69 slithien 2,192 2,351 159 cj81499 2,333 2,349 16 sorunome 1,478 1,834 356 solarblade90 1,270 1,345 75 RNB 634 651 17 shadon 534 564 30 dombeef 453 471 18 randomguy65 365 400 35 knexman1999 150 173 23

Topic by Jayefuu 8 years ago  |  last reply 8 years ago


Total Views Count - 30/09/2010

Heya, here's this week's! Quite a lot of interesting stuff happened this week, and I added the percentage gain as a column. Want to summarise for me? Post in the comments and I'll add it here :) Don't know what the deuce I'm talking about? See here. Instructabler 24/09/2010 30/09/2010                              gain       % gain canida 3,627,875 3,658,688 30,813 0.842187145 scoochmaroo 2,702,208 2,743,528 41,320 1.506089969 Kiteman 1,633,436 1,640,632 7,196 0.438611462 Plasmana 1,492,928 1,500,418 7,490 0.499194225 Tool Using Animal 1,487,143 1,492,640 5,497 0.368273663 killerjackalope 888,631 895,559 6,928 0.77359504 gmjhowe 870,524 875,390 4,866 0.555866528 SaskView 759,324 763,716 4,392 0.575082884 lemonie 699,648 705,301 5,653 0.80150177 PKM 484,135 486,453 2,318 0.476510578 ChrysN 461,260 467,936 6,676 1.42669083 mikey77 458,072 461,238 3,166 0.686413522 laxap 395,597 398,350 2,753 0.691100791 jeff-o 386,836 393,752 6,916 1.756435523 depotdevoid 299,414 305,107 5,693 1.865902782 Jayefuu 250,194 278,139 27,945 10.04713471 Spl1nt3rC3ll 266,601 267,475 874 0.32675951 KentsOkay 229,513 230,666 1,153 0.499856936 ModMischief 221,543 225,973 4,430 1.9604112 reukpower 219,479 223,387 3,908 1.749430361 Doctor What 197,317 198,248 931 0.469613817 AngryRedhead 169,293 170,607 1,314 0.770191141 comodore 143,985 144,781 796 0.549795899 Lithium Rain 132,160 133,157 997 0.748740209 yokozuna 130,576 130,989 413 0.315293651 Ninzerbean 123,686 126,763 3,077 2.427364452 Kaelessin 124,357 125,729 1,372 1.091235912 Lynne Bruning 118,895 119,533 638 0.53374382 The Jamalam 114,258 114,665 407 0.35494702 BrittLiv 110,721 112,942 2,221 1.966496078 Hiyadudez 108,357 110,259 1,902 1.725029249 bertus52x11 102,117 104,099 1,982 1.90395681 thermoelectric 87,987 88,916 929 1.044806334 Goodhart 79,169 81,413 2,244 2.756316559 DJ Radio 78,308 78,886 578 0.732702888 janw 69,575 70,156 581 0.828154399 RavingMadStudios 61,712 65,922 4,210 6.386335366 MichelMoermans 51,440 52,214 774 1.482361053 Killer%7ESafeCracker 47,773 49,646 1,873 3.772710792 TNEN 42,571 42,863 292 0.681240231 kelseymh 41,178 41,403 225 0.543438881 Sunkicked 39,518 40,495 977 2.412643536 Berkin 33,014 33,354 340 1.019367992 Shadowman39 26,817 27,963 1,146 4.098272718 knuckel 25,767 26,206 439 1.675188888 The Ideanator 23,861 24,618 757 3.074985783 nickodemus 22,991 23,646 655 2.770024528 m6233555m 22,478 22,524 46 0.204226603 peguiono 20,889 21,099 210 0.995307834 artificialintelligence 19,854 20,177 323 1.600832631 MotaBoi 17,361 18,509 1,148 6.202388027 plane phanatic 18,222 18,381 159 0.865023666 Derin 17,884 18,037 153 0.848256362 Rsbarr96 17,730 17,895 165 0.922045264 TSC 16,655 17,094 439 2.568152568 possum888 16,648 16,809 161 0.957820215 zascecs 15,632 15,708 76 0.483829896 steveastrouk 15,493 15,669 176 1.123236965 tombuckey 14,859 14,976 117 0.78125 jwystup 12,817 14,324 1,507 10.52080424 knexsuperbulderfreak 12,681 12,747 66 0.517768887 kcls 11,695 12,069 374 3.098848289 uberdum05 11,052 11,145 93 0.834454913 floris2burn 10,605 10,820 215 1.987060998 jen7714   10,588   0 Legofanatic 10,259 10,501 242 2.304542425 NachoMahma 10,044 10,086 42 0.416418798 masterochicken 9,307 9,363 56 0.5980989 qazwsx755 8,041 8,231 190 2.308346495 acidbass 7,512 7,636 124 1.623886852 lizzyastro 5,634 5,789 155 2.677491795 Kryptonite 5,590 5,644 54 0.956768249 cherishcherub 4,437 4,544 107 2.354753521 zero.gx 4,264 4,303 39 0.906344411 jamesdude 3,531 3,565 34 0.95371669 moocowdog 3,287 3,419 132 3.860778005 Jimmy Proton 2,146 2,605 459 17.61996161 megametal8 2,422 2,482 60 2.417405318 cj81499 2,325 2,333 8 0.342906129 slithien 2,050 2,192 142 6.47810219 sorunome 1,307 1,478 171 11.56968877 solarblade90   1,270   0 RNB 625 634 9 1.41955836 shadon 497 534 37 6.928838951 dombeef 438 453 15 3.311258278 randomguy65 343 365 22 6.02739726 knexman1999 135 150 15 10

Topic by Jayefuu 8 years ago  |  last reply 8 years ago


Strong Egg Timer mechanism?

I want to a mechanism that turns a drum very slowly for a few hours.  It should work just like an egg timer: You wind it up and then it turns slowly. Is there mechanism available that works like this or do I have to built it from scratch?

Question by uwe999 6 years ago  |  last reply 6 years ago


Ibles Robot In Popular Mechanics

Well I was flipping through my August 2008 issue of Popular mechanics, and what do I spy on page 16? The Ibles Robot! In his green sci fair outfit! No idea what he's doing there, and I intend to email PM about it.

Topic by KentsOkay 10 years ago  |  last reply 10 years ago


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 10 years ago  |  last reply 9 years ago


Mechanical vs Electrical Engineering? Answered

What are the primary differences between the two? Which is a more rewarding career path? Which major is better for someone who wants to get a broad understanding of engineering? Is it feasible to get a double major?

Question by Chikpeas Brother 5 years ago  |  last reply 3 years ago


electronics and mechanics of a cnc machinecan?

So can someone give me a basic rundown of how a cnc machines electronic and mechanical aspects works im just a bit confused and cant seem to find a source to give me information on the subject everyone seems to gloss over it, but if you have a website or pdf or anything that would help thatd be great too thanks in advance!

Question by zaronas 6 years ago  |  last reply 6 years ago


Mechanical Bucking Rodeo Bull

Hey everyone, does anyone have plans or know a website that explains how to make your own mechanical bucking bull? Doesn't have to be as complicated as a proper one, just something to have a bit of fun on, and not too expensive to make. Thanks!

Topic by tapdogs1 12 years ago  |  last reply 11 years ago


knex gun trigger mechanisms ?

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

Question by sonic broom 5 years ago


project for mechanical engineering student? Answered

I am preparing a project on the topic "necessity is the mother of invention".i am a mechanical engineering student.can anybody give any ideas about what could be done on this topic. i am supposed to register the project unitl 12th april.so plz u ppl hurry ?

Question by coepian 8 years ago  |  last reply 5 years ago


Using "Phun" to simulate mechanisms

I'm not an engineer, and don't have access to Autodesk / AutoCAD, so I've been using Phun to simulate mechanical design.It's not strictly valid in an engineering sense, but it works pretty well for roughing out ideas. The polygons were created in Inkscape, then converted to Phun scenes with SVG2Phun. Some objects won't translate (like grouped objects), so it's necessary to simplify (hence the two images from Inkscape.)

Topic by gmoon 10 years ago  |  last reply 8 years ago


Arduino alarm on mechanical clock

I am new to arduino and I am trying to hook a mechanical wooden gear clock to trigger an alarm or chime when the clock hands hit 12. Does anyone know how I can go about this or any tutorial/instructable that does this or something similar?

Topic by zippystix 5 years ago  |  last reply 5 years ago


Wearable Mechanical Butterfly Wings

I have half an idea of how to make the wings on my daughter's fairy costume work. My ideas involve vairying degrees of a pulley system, springs or rubberbands, and kite string. Any ideas of how to connect the pieces -or alltogether better ideas- would be greatly appreciated.

Topic by mae060669 10 years ago  |  last reply 10 years ago


Need A Reliable MECHANICAL Speedomenter?

I recently motorized a mountain bike and it is great.  I bet I can top 40MPH!!  Only problem is, I have no way of knowing for sure how fast I'm actually going.  I could buy a digital speedo for like $10-20 but I want the look of having a speed gauge on my bike, plus it's a little harder to read a digital speedo at a quick glance when the screen is like 2 inches long and wide!  I saw this mechanical speedo on ebay for $10-20, but some reviews of it on other sites says it breaks really easily, or as soon as it hits 30 MPH it goes crazy.  Does anyone know where I can get a reliable mechanical (analog) speedometer?

Question by aeronut01 7 years ago  |  last reply 7 years ago


where to buy mechanical supplies?

Hi,  I am looking to build and assemble a dehumidifier, where can i buy the different components and parts specifically  in the UK...or any other part of the world (as a last resort) Thanks, Mimi

Question by ketsev 4 years ago  |  last reply 4 years ago


Murphy style beds mechanism

Hey guys, I need some advice, I want to build a murphy style bed, in short i want the bed to look like so: http://www.resourcefurniture.com/space-savers/queen-space-saving-beds/ito I have build and tested the shelf.leg system, it works pretty well and is weighted out nicely. the concept is going to use pistons to lower the bed for a smoother feel but what my concern is what would be the best way to build the pivot mechanism at low cost but high durability. the bed will have a sofa at the front also but not like the one in the link, my version will be more of a box with cushion and fabrik that i can store items away into. Please use the link below to view a version of my concept for the pivot mechanism: http://img21.imageshack.us/img21/692/pivotsystem.jpg ( i know there are a few misspelt words but it was just a quick mock up for you guys) Any help is welcome - just dont advise me to buy the murphy bed mechanism as its to expensive and i believe i can build the entire bed for the same price :)

Topic by rron.r 7 years ago  |  last reply 7 years ago