Chain machine

I want to know, how can I do a machine to make stainless steel chains. That's a ward one. If some one can tell me

Question by spper   |  last reply


Making a chain clock...?

I asked recently about making one of these http://blog.makezine.com/catenna_clock.jpg? here https://www.instructables.com/answers/Does-anyone-have-any-idea-how-to-make-this-see-d/ Re-design gave me some useful advice as to what to use, sadly though, I have no idea where to begin. I know what a stepper motor does, but as far as to what stepper motor to use, where to get one, how to use/program a controller, how to power the motor, etc I have no idea. If somebody could give me some clues, or just point me towards another instructable that explains any of this I would be most grateful. Thanks for the help, Cook$

Question by cook$   |  last reply


floating key chain?

Hi i need help making a self inflating key chain that uses a balloon or something to carry keys to the surface of the water, it needs to inflate when fully submerged but can handle some minor splashes. something similar to this:      www.water-buoy.com

Question by rocketman217   |  last reply


Daisy Chain Amplifiers?

I have a couple amplifier chips, and i would like to know how i could daisy chain them (connect them together for more power)i am using STMicro TDA7266s pdf i have tried putting amplifier chip in series with each other (not the outputs, but all the pins)help?

Topic by Sandisk1duo   |  last reply


I would like to purchase a manual on how to braid paracord. Can you give me the price on a manual of this type ?

I am interested in making different key holder, and other items out of paracord.

Question by Jwillbigj   |  last reply


Mini Bike Chain Adjustment Trouble? Answered

I recently bought a bunch of pocket bikes all in good shape but all had some sort of problem.  I took the best parts off of them and made one extremely nice bike.  The one problem I am having with it is that the chain likes to come off.  There is a bolt connected to the back axle that tights and loosens and slcks or tensions the chain.  How do I find the "butter zone" where it isn't too loose to come off, and it is too tight to come off?  The two sprockets are lined up really well, but they are a little off.  Would it be possible that that was the problem?  When I say a little I mean like so small its less then 2-3 mm from drive sprocket to driven sprocket.

Question by Electric Spectre1   |  last reply


Can you "Daisy Chain" resistors? Answered

Can you chain together multiple resistors to add up their ohms into a larger amount.

Question by lamboboy732   |  last reply


Help with powering chained LED strips?

It's been about 30 years since I had any formal training in wiring circuits, so excuse my ignorance.   I am trying to chain a couple of addressable LED strips.   The strips have the following requirements: Power consumption: 10W/M Length: 5m Voltage: DC5V So it's 50W for the length of one 5m strip.    I'm considering chaining two or more strips together.   The data chain can be as long as it needs to be, but the the manufacturer recommends powering strips every 5m.     Let's say I have a 5v 60A (300W) DC power supply.   Can I run multiple strips (I guess up to six 5m strips) with this wired in parallel, or do I need to worry about putting resistors in to keep it from overloading the strips?    Here's a quick sketch diagram

Question by reverendpete   |  last reply


make a belt or braclet from a bike chains?

Bike chains were used for belts to fasten pants in the 1960s as were motorcycle chains.  How was/is that done?

Question by ambass0z   |  last reply


Chaining 4 74HC595 shift registers together

I have a question about chaining 4 shift registers together.I am going to be sending data to four shift registers and my question is this, when all four are loaded and latched if I send more data is it possible to only send data to the first register in the chain without the others losing their values?

Topic by mbcharney   |  last reply


Soldering/brazing/welding steel, bicycle chains?

Hi, i am working on a project (in Vienna, Austria), and a part of that process will be that i would have to clean a bunch of used bicycle chains and create other, rather smaller objects out of them. they dont have to hold a lot of weight, they vary from 4 to 6 chainlinks or so. At the end I think I will have between 50 and 100 maybe 200 pieces, so it's not an industrial amount but not a single few pieces either. FYI: bicycle chains are made from steel, they are not stainless steel, usually its chromed, there is nickel in it, so when its used they surfaces are often damaged, so it has rust on the surface as well. it has really small hidden parts where grease, dirt and rust stays hidden and stuck too. For the cleaning: I have been cleaning chains to create prototypes and individualised pieces so far with Terpentine and experimented with other types of Degreasers, Soaps, with toothbrush method:) and rags, also other kinds of paint thinners (terpentine doesnt smell so bad, but still removed a fair amount of grease dirt and rust) Degreasers are not very effective, soap and toothbrush and rags take a lot of time. Soaking in terpentine helps but its still time consuming. I havent tried aceton yet. Vinegar and stuff like this dont seem to be so effective either... For assembling/connecting: I have used for individual pieces chain tools (putting a small pressure on the chain link pins, so they are not flexible anymore (as chains supposed to be normally) and then forced bending them in the position they should be in. This is stable enough for the stuff I want to do (they are only decorational) but it's a lot of work, takes a really long time. I did welding too (MIG), but the plates are individual pieces, it doesnt weld so nicely, or its not so easy, and I dont have my own welding machine in my workshop space, I have one in a different place i can use, but i dont want to invest and buy one just for this, and it would be nice if I could do the whole project in my own space, and i wouldnt have to transport so much stuff all the time back and forth... and it's not necessary to have it that strong as i can actually get it with welding, because it doesnt have to be that resistant, doesnt have to hold so much weight, as they are going to be only smaller decorational objects anyway. Ideas and tips that came up, havent been tried yet though, or didnt really work yet: - soldering: with gas flame (torch) and simple solder. i tried shortly, didnt really work though, didnt connect, maybe i give it a try again, not sure what i did wrong though, maybe its just not the right method? - using screw glue (not sure if thats the right name in english:) rather smaller amounts or transparent ones, applying it at the inside points, so it still looks nice. - i havent tried epoxy and i am not a huge fan of the idea, but i dont know enough about the costs, process and the environmental effects of it... - it is an option also to use some temporarily working, not very great but cheap and fast method for assembly as preparation and then just quickly fill holes by welding, i thought about trying soldering or screw glue before welding and just zack, zack zack weld them one bye one, it would be easier if they are somehow already fixed in the position they should be in (as they are small and very flexible pieces of metal otherwise), problem is though that whatever i use as preparation, will be quickly burned by welding, which is in terms of environmental effects not so great, but also has aestetical consequences i guess. - i just read about brazing, i am not sure yet what i would need for it, for smaller stuff, what is the difference between brazing and soldering exactly and how well it would work, what are the costs of investment etc. - for cleaning: one idea i havent tried, just read about it is sandblasting. I would probably have to ask some company to do that, as i really cant afford to invest much more money in equipment right now, not sure if i even have the right space for that, and it seems anyway for 50 or 100 pieces disproportionate somehow. I would like to use a method that is not too bad in terms on enviromental-friendlyness or how to say, not very damaging or too bad chemically etc. it would be important that whatever i do, the endresult: - holds more or less - looks nice, either invisible the parts or things, materials i add so it holds, or it has the same colour/material like some kind of metal. it can be that i will paint it over with some metal silver colour at the end if necessary, for having a consistent colour surface, or to prevent from rusting afterwards. - should be cheap during the process, so low running costs and more or less environmental friendly, and preferably some method to use tools that are cheap or i have access to, not very expensive to invest. - i prefer to do things by myself and not outsource the process to companies unless it has big advantages (like for example if it turns out sandblasting is cheap and really environmental friendly i would consider it actually:))) i am really happy for any tips on these things, before i spend more money on stuff just to try it out and find out it's stupid, or not what i need, not what i am looking for:)

Question by bikese_xual   |  last reply



My key chain Video Recorder Doesn't Record video! only audio and takes snap shots!! can some one please help me!!? Answered

Hi every one i bought a key-chain video recorder for my micro twister! it arrived today....i tried recording video......but it didn't record any it only took pictures and recorded audio!! can some one please help me !! to make it record video!!

Question by kk khrab   |  last reply


Bearing/fulcrum for a pendulum

I want to swing a locket on a chain like a pendulum and I want to minmise the friction experienced where the chain attaches to the supporting post. What sort of bearing or similar device should I use for this? Ideally it should be available in a bronze/dirty brass colour but I guess I can deal with it if it isn't.

Topic by THX 1138   |  last reply


How can I color aluminum wire without annodizing?

I bought a spool of 14 gauge aluminum wire for chain maille. My goal is to have alternating black and natural colored rings used for the maille. In a household metal working book I found from the 80's, they said to,"Mix 2 tablespoons lye into 1 quart cold water. Add aluminum part for 1-2 minutes. Submerse part into household dye mixed according to manufacturers directions until desired depth of color is achieved. Rinse in cold water".I tried this method using RIT black household dye; however, it was not successful. I am trying to dye the wire both RED and BLACK. If no method for the red is found, I can purchase a short length of anodized red wire; however, If there are any chemical reactions for turning the wire black, that would be great. Thanks!!

Question by kreationism   |  last reply


stepper motor question

Ok, i am trying to make a chain clock, its just a clock with a gear instead of a minute hand that turns a chain with 12 numbers on it. my problem  is; the chain i am using is too heavy for a conventional quarts movement. i would like to use a stepper motor but all the drive circuits i find need an arduino. are there any simple circuits i can make, to use a stepper motor for a clock? i do have some circuitry skills so i can work around some stuff. thanks for the help :)

Topic by golddigger1559   |  last reply


Is there a way to slow down the speed of a moter while keeping the power the same, without resorting to a gear system?

I have a lawnmower moter, and need to slow it waaaaayy down to like 30rpm but maintain the power (or as much of it as possible). I really dont want to have to use belts, chains, gears or any of that hassle.

Question by coatesy900   |  last reply


go kart will not move

When I give it gas it will not move . Engine is running fine and chain is good. It makes a loud squeal when you give gas

Question by becky.s.rowan   |  last reply


Strobe Ignitor

Does anybody have any idea of how to build a strobe ignitor that uses 1/4 jacks to control a series of strobes that are all daisy chained?

Topic by ScottReed 


How can I modify this circuit to sequentially turn on LEDs in parallel, while avoiding voltage drops? Answered

I have a single pole, 12 throw rotary switch which I want to solder to a set of LEDs so that rotating the switch clockwise lights more LEDs as follows: 1 = 1 Red LED 2 = 2 Red LEDs 3 = 3 Red LEDs 4 = 4 Red LEDs 5 = 5 Yellow LEDs 6 = 6 Yellow LEDs 7 = 7 Yellow LEDs 8 = 8 Yellow LEDs 9 = 9 Blue LEDs 10 = 10 Blue LEDs 11 = 11 Blue LEDs 12 = 12 Blue LEDs Since there will be a voltage drop across the diodes, the LEDs at the start of the chain will get progressively dimmer, and increasing the voltage would blow the LEDs in shorter chains. One modification I know I could already make would be to not use the first 4 diodes on the yellow LEDs, and the first 8 diodes on the red LEDs, as a minimum of 5 yellows and 9 blue will be active for each position. This still leaves a maximum of 3 diodes in each chain, which I still think would cause the lights to be much dimmer. Another solution I can think of is to have multiple wires coming from each terminal of the switch, each with their own diode, which would ensure all active LEDs had the same brightness (I'm not sure if this would cause the whole chain to be dimmer than shorter chains or not). The downside is this would need  31 wires rather than 13, and that's only if I bridged together all the shortest LED chains of each sequence: individual wires for absolutely every position would mean 79 wires+diodes). To put this in context, I want to create the health bar from Dead Space 3: If you can suggest a way of improving the circuit, or totally re-designing it, it'd help me loads! Thanks!

Question by Shadow Of Intent   |  last reply



pocket sized sound maker? Answered

you know one of those key chain kind of things that play sounds when you press a button? is it possible to make one of those or hack one to make my sounds?

Question by milkywaybar   |  last reply


How do I make a chain rotating around 2 gears complete a single rotation in exactly 60 seconds?

Hello everyone, I'd like to start off by declaring I am new to this website and have little understanding of technology as of yet. If my question has been answered before I apologize, but I haven't been able to find it in the forum. I've recently started tinkering with 3D printing as a bit of a hobby and am trying to make items that are more than just odd looking. One of the things I'd like to create is the following clock found on youtube: http://www.youtube.com/watch?v=4S2DSteBLDY Now this clock is made with Lego and its creator has labeled it as a 'proof of concept' as the 'lift' that delivers the ball, which should represent a minute, actually only counts ~55 seconds. For an actual clock I'd like it to have 60 seconds per minute and I am wondering if I can calulate the specs before I spend money on printed prototypes that dissapoint.. So using 2 Cogwheels/gears with a Chain that picks up a ball every 60 seconds (so a full chain rotation) based on an electric motor. I've found several 3-9v electric motors, but all seem to have rotations in the thousands whereas I'd expect to need like a few dozen rotations per minute(?). The clock I am trying to make is smaller than 20cm and I'd like for the chain to span a max 16cm in the final clock. Summed up: 1) How do I decide the right Gear? size/teeth? 2) What Electric motor/power source would suit a very low amount of rotations? 3) How can I time the motor/gears to complete a cycle in exactly 1 minute? Thanks in advance for taking a look ;)  

Question by RayGroot   |  last reply


Ambilight controller

Hey guys,has any body tried the ambilight controller like the one here ==> http://www.hacknmod.com/displayMOD.php?hack=990the link for the controller points to some weirdly languaged (hope thats a word "languaged") site but with no content. i am preparing my comp for fragapalooza (canada's largest lan party) so if any one has done/looked up this mod, please point to a schematic for the led controller...the controller is connected to a pc with a serial cable and has many outputs to connect chains of leds plus i think there is another power supply to power the leds (as the chains of leds are long)...any help is appreciated...note: this is a multipost to produce results efficiently...i hope...***update: nothing after 3 days at bit-tech or fragapalooza.com...:(

Topic by Slisgrinder   |  last reply


Digital Picture Fram Keychain Video Simulation?

Is it possible to flash the firmware in one of the small 1.5 inch digital picture frame key-chains in order to reduce the slideshow feature timing to about 15 milliseconds?  Then one could preview all the photos in memory and simulate motion video. 

Question by    |  last reply


How to make a real Bluetooth range extender?

I want a bluetooth device that connects to my phone as a standard bluetooth headset and allows any bluetooth headset to connect to it as if it were my phone. I am thinking of using it (or chaining a few of them) to create a larger area for my bluetooth headset for my phone. THANKS!? (Yes...I have seen the antenna hacks, but they don't allow me to boost the power of the signal like I need to.  And, this device should also allow chaining to get the signal out a lot further and around metal obstacles.) Even better would be the ability to connect multiple devices to the extender so that multiple people could be on the same call on their bluetooth headsets simultaneously.  (Yeah...it's getting deep in here.  But the geek in me wants what it wants.)

Question by squishyalt   |  last reply


how do I remote control light a candle?

I was hoping to light a candle using some kind of remote control. It can be wired. It's to a candle suspended in mid air using chains. I wanted to light it remotely for special effect. :) Would appreciate any thoughts on this! Thanks very much!

Question by    |  last reply


Any suggestions for projects or other uses for these things I salvaged? I have a motor, capacitor, and bike chain.

I was working for a man from my church doing some yard work. We were about to go to the dump and he had a perfectly functional garage door motor he was about to throw out. the problem was that a plastic gear had been completely stripped. Not wanting to see it go to waste I asked if I could have it so he gave it to me. I used the main base plate for making some homemade knives but I would like some suggestions for other uses or projects. (have know idea what the capacity of the capacitor is, all I know is that as you can see in the pictures it is rather large. Any help with this info would be greatly appreciated.)

Question by Shadow13!   |  last reply


Which Lead Acid Battery Is Better For My Needs?

Hello, Which battery do you think I should buy. I need reliability good performance and long service life. I will be useing them in series with a 250 watt 36 7 amps constant 10+ amp spikes 36 volt electric scooter. I was wondering which is higher capacity at 7 amps discharge and which would last the longest please can someone help me decide :)   http://www.component-shop.co.uk/html/sla12v7ah.html        - 7.5ah kinetec http://www.component-shop.co.uk/html/sla12v9ah.html        - 9 ah  outdo http://www.componentshop.co.uk if the links dont work

Question by Daniel Deacon   |  last reply


difference between marine and normal oil

I need to mix gasoline with 2-cycle oil for my 2-stroke chainsaw and i only have marine 2-cycle oil. is it ok if i use this or do i need to use regular 2-cycle oil?

Question by Sun Gear   |  last reply


E-Bike motor selection, would it work? Answered

Im thinking of building an ebike, but unfortanately im stuck at the motor selection. I was just thinking, if you use 250W brushed motors for them, can this motor be used... If yes , just how to use it for a chain drive E-Bike? Any help will be greatly appreciated.

Question by robobot3112   |  last reply


how can i model a working timing belt in fusion 360?

I want to model a working timing belt to simulate to motion of gt2 belt in a corexy 3D printer in fusion 360 i guess the Fusion team is working on it but are there any good hack to do it for now ? should i model it like a chain with an extremely small links ? 

Question by D_P_R   |  last reply


LED Circuit Design?

I'm a Mechanical working in the LED field. I'm trying to design a LED circuit with the little knowledge I have. Here is my circuit in a nutshell: 3.2 Vf typ - 3.6 Vf MAX -.150 mA 24 volt CV PS supplying 3.3 A 7 series in parallel with 22 chains I calculated using typical Vf as the following: 24/3.2 = 7.5 devices so I rounded down to 7 devices in a series chain. 7*3.2 = 22.4 volts required 24 supplied - 22.4 volts = 1.6 volts to dissipate. Resistance = 1.6/.150A = 10.67 ohms Wattage across resistor = 1.6*.150 = .24 W So I found a SM resitor 10.7 Ohms at .25 W. I have a concern with Vf variance. Would this circuit not work if I get Vf's higher than 3.2 Vf? So if I change my circuit to 6 devices per series chain I need 19.2 volts and need to dissipate 4.8 volts. This just seems like a waste.I still do not understand Vf variance. If I design for 6 and dissipate 4.8 volts with a resistor - won't the series chain be starved if Vf goes higher? So how do you accommodate this variance? I just have worries about this design - regardless if I design for 6 or 7. I know some about LEDs but I do not know what happens when I get Vf variance. Does the resistor go at the end of the series circuit? If this is the case then I understand how variance in the circuit would be able to use available voltage - and then the resistor is at the end to disipate what is left over. I've heard concerns that I'm not allowing for more head room #i.e. doubling the resistor value and wattage requirements). If I double the voltage dropped don't I take this away from the LED circuit possibly starving it? I have always assumed the resistor goes at the beginning of the circuit - regulating the current/voltage prior to it entering the LED series circuit.?

Question by oharag   |  last reply


Server Airflow Help?

As you can see here, I just got 3 new blow fans for my server I'm making. But I'm not making it in a server box/case, or even in a computer case, I'm making it in a plastic shelving unit. I have 5 fans in total; the three blow fans, and a medium and a small computer fan. I'm completely new to the airflow concept, so I will need some guidance.ideasBelow are some things that I think will improve airflow, but you tell me if it's good or not.1. leaning motherboard -Is making the motherboard "lean" so the bottom is semi exposed a good idea for airflow? Or would the air not circulate as well?2. "chaining" blow fans -Would "chaining" the blow fans together (putting them in sequence) make a twice as powerful stream of air?questions1. Should air be sucked out of the box, or blown in?2. What would the ideal airflow solution be?Thanks!-Shadow Ops

Question by Arbitror   |  last reply


I have a older Bmx bike with no handlebars. Anyone got any projects I can make out of it?

I found this bike in the back of my barn after it had been totally forgotten for years. It has no handlebars and a fairly rusty chain everything else seems to be in fair running condition. Any suggestions on what could be with it?

Question by CrawdadMan   |  last reply


Can you make a larger solar cell out of smaller ones?

Is it possible to make a larger solar cell out of small ones, such as those from solar calculators? I understand you can chain smaller cells into panels - would it be possible to use this same premise to recycle the incredibly small output from a calculator cell into something actually useful?

Question by Tetsuoh   |  last reply


Keychain sized simple circuit Answered

I plan on making an Instructable about making a keychain sized simple circuit. I will be using the circuit board  shown below but I'm having inventors block. It should be able to take the stress of being jumbled up in a pocket. What should I put on it? If I use your idea I will mention and thank you in the Instructable. Thanks in advance.

Question by pgd5000   |  last reply


Cleaning an unknown metal object

My husband and I just moved into a new house on 5 acres. While cleaning some of the 'back' yard, I found a small metal coke/beer shaped-type bottle. It is obvious to me that it is a promotional or key chain fob or similar object. It looks like it screws together in the middle top to bottom. That is the crucks, it is frozen closed so the curiosity in me is trying to find how to unscrew the item. Any suggestions?

Question by ladynavyvet   |  last reply


Baseball retrieval system?

My son plays little league baseball and there are quite a few balls "just out of reach" on some private property with a 6' high chain link fence. No barbed wire, but lots of poison ivy. Wondering if you folks could help me McGuyver something to retrieve these baseballs. I got as far as PVC and some sort of grappling hook, but then again, I'm a newbie ;-) Any help would be appreciated. Thanks!

Topic by Dougmeister   |  last reply


I think I have a cool idea, will it work?

I would like to see a scientific 'domino's' event. My idea is that you have a series of containers with different chemical combinations, and they all have entry and exit areas. The containers would have a starting spot, whereby a chemical would be added to the current combination, to cause a spurt to leave the exit point, and enter the next container by the entry point, this would cause another reaction, and the chain would continue to the next container. I'm wondering if the reaction could be continued for 20 containers or more. Obviously an explosion in the chain would break the next container, so each reaction would need to be thought out to produce a spurt. What's more the positioning of each container would need to be perfectly planned according to the power of the reaction. For the container's I'm thinking something like a glass watering can, with chambers inside if needed to produce the right reaction or effect. The entry point would be the filling rea, and the spout would be the exit point. I think it's a cool idea, and I would love to know if it could work.

Question by Kyndig   |  last reply


Anyone out there in tech land have any ideas or plans to build a 12volt powered jocky wheel for a caravan?

What size motor would I need to move a 950 kg caravan and what size gear sprockets would be best to drive the chain to the wheel.It would have to be able to be put in forward and reverse mode.anAny advise would be of use but some plans would be the best.Thanks hoplite?

Question by caesar66   |  last reply


hiding a bebo page

Ok i have a small problem. My kid wants to do this poetic terrorism thing in our town. Putting up signs warning about low flying angels and such. There is a statue of some great leader of the past and he wants to put a ball and chain on him. This is subversive art and he wants to set up a bebo page or similar to display his poetic subversions but he is afraid that the page would lead authorities back to him. Can he hide?

Topic by maninamousesuit   |  last reply


Where can I find a keychain-sized device to hash passwords?

Where can I find a device that can fit on a key chain or in a wallet (cell phones and graphing calculators don't count) and can perform a common cryptographic hash (like MD5 or SHA1) on a short phrase? I know there are proprietary single-use password generators and devices that store cryptographic keys, but I am curious if there are devices that use a well-publicized hash on the entered phrase but store nothing.

Question by NobodyInParticular   |  last reply


Can I ground the negative wire from my speaker, or do i have to run it to the reciever?

I am connecting my 5.1 speakers to my receiver to my PC.  The surround (back) speakers are fairly far away and I have limited speaker wire.  Is the negative post on a speaker just a ground wire, or does it contribute to the speakers function?  Can I just solder it to something metal?  Alternatively, could I daisy-chain the negative posts of the speakers and run that to a single negative post on the receiver?

Question by stevepesce879.   |  last reply


Possible to combine a 50cc scooter w/ a 250 watt dc electric scooter motor to add "boost" after gas engine tops out?

Other than mounting the motor with a hub and adding in extra chain, how would you calculate the right gearing ratio to provide power at top RPM?   Also could the dc motor be used as an "alternator" to provide hybrid like recharging of the batteries from the gas engine?  Looking for anyone who may have insight on this.   The motive here is to be able to keep up in uphill traffic without having a line of angry cars behind you.  

Question by lbossington   |  last reply


video composite spliter

Hi, i have 3 portable(car) monitors that take composite video signal in, the deal is i want to link them all together to the same source.. Can i simply daisy chain them(parallel) or do i need some kind of amplifier to do the trick? If so, please provide a tutorial/instructable on how to make one.. The source can be s-video, vga, or any standard computer video analog output.. i'm not saying dvi or hdmi interface due to the fact D/A conversions being not that simple(for me)..(but please provide the schematics anyway) I'm sorry for my terrible english x) Best regards, Fábio Santos.

Question by Exiumind   |  last reply


How can I convert my home gym to create energy? I own a bowflex, treadmill and row machine.

I wanted to somehow use my home gym to create additional energy to aid my solar bank array(when it's not sunny). I already have a bike / generator hooked up but I wanted to convert  the other machines as well.  This way more than just the bike is topping off the bank.  Is there a way to daisy chain the machines or is it better to individually set up each generator? how would I go about doing so?

Question by mcolonturner   |  last reply


in a counter balanced system, do I need to account for both the load mass and the counter balance mass for acceleration?

I have a simple 2 pulley system lifting a 2400lb mass.  Imagine a chain lift, starting at the load mass, up over a sprocket, across to a second sprocket, then down to a 3000lb counter balance mass.  to move the load down, I'll need to apply 600+ lbf down on the load.  To move the load up, I'll apply <600lbf to the load.  That's simple.  Now, during the move I need to STOP quickly.  Do I need to account for only the 600lbs difference or the 5400lbs of moving mass?   _________________   |O                                O|   |                                      |   |                                      | 3000lb                         2400lb counter                        Load

Question by JFunsch   |  last reply


I need help building an electric go kart steering, gearshift, and brake mechanisms. Answered

I am building an electric go kart, and I have a few questions. one, if I use this turning mechanism, which wheels/axles do I use, and how do I connect the wheels to the front axle? two, how do I connect the axles to the kart (made of wood) so that the axles spin? three, how do I put brakes? four, If I connect the motor to the back wheels with a chain, how do I put a gearshift? (like on a bicycle) Thanks in advance!

Question by sidmani   |  last reply


Rotating a simple DC motor really slowly (1 rotation per 2 hours)?

This is to rotate a bike chain on a small cog. After doing some research, I came across a component called a Pulse Width Modulator. Would this be suitable for turning a simple DC motor at 1 rotation per 12 hours(EDIT: I meant 1 rotation per 2 hours, not 1 every 12 hours)? Or, would it only get me to a certain point before I need to use gear ratios to achieve my ideal revs? This really is a budget project so nothing too fancy.  Thanks

Question by Nenagh   |  last reply