I know this photo is different looking, but ignore that and look at the shaft.  It, like all other driven independent suspensions has no spline or sliding shaft to allow for movement in and out.  HOW DOES THIS NOT CRUSH THE SHAFT OR JOINTS.

I have been trying to figure out how to put an independent suspension on a Huge scale RC.  What I have noticed on large cars is that unlike small RC cars the rod going from the dif to the wheels is solid and can't extend/shrink.  Why doesn't this bind up? I have also noticed that for some reason they don't line the suspension up to move exactly up and down. The wheel's pitch is actually set up to change as the suspension depresses.

I have the kit but am wondering if anyone has accomplished this task before and would have any time-saving suggestions.

Plz try to find one with not tomany peices and not to little plz but you dont have to...

Im missing the bolt n bushing on the sway bar link the upper n lower control arms are now lowered and the nut on the lower ball joint is riding on the inside of the rim. well sitting on it, im not drivin it would this be the cause? 2001 Mercury mountaineer

Must be small

My TNKIT entry. Video - http://s562.photobucket.com/albums/ss69/Atlas999/?action=view&current;=MVI_3819.flv

It it a good idea to add suspension to a go kart? It is a small go kart and already has a frame from metal tubing and small wheels. My friend and i thought it would be cool to be able to drive it off road. We are meeting up tomorrow to discuss in detail how we would design it. The basic idea is this: use a pair of universal joints attached to a rod which transfers the power from the axle to the wheels. There would also be a spring attached to a hinge where the universal joint attaches to the wheel, and the other side of the spring attaches to the frame. There would also be some sort of frame that this stuff was attached to to keep it in place. The frame would be made preferably without welding, as we have no access to welding equipment. I don't know if this is possible to do without welding, but if it was REALLY necessary, i guess we could get a welder or find someone to do it for us. We will add images of our prototype drawings tomorrow once we get them done, those should help you envision what we are trying to accomplish. Thanks for the help!

So i've been interested in pneumatis for quite some time and recently I came across a small air cylinder (6 inch travel), 12 volt air compressor, 12 volt valve, and misc fittings. I got really excited and without thinking twice I grabbed tools and started hacking up my old beach cruiser (it was quite a mess anyway after 3 trips to burningman). So this is the outcome... I can control the up/down with a momentary on switch out back. Now just looking at this mess its easy to see that well i obviously can't weld. Never tried... Anyway it rides really sloppy as you can imagine, much like an old Lincoln with the shocks blown out, but it is so much fun! Now i pose the question to you community members, how would you have done this different? Looking forward to your responses!

Im on a tight budget, i have a lot of supplies though. I am going to use it for a project in my engineering class. I really need help with it because i cant find anything about ti on the web. please post anything that you think would be helpful cheers Tony-palmer

Hi guys, I'm designing and hopefully building an electric go kart but i need some help. How do I put independent suspension on all 4 wheels and still have steering, brakes, engine etc. Any ideas?

S10 or hummer h2 

I want to make a counter display for a Halloween kitchen, using quart and gallon jars to 'store' ears, fingers, rats, etc.  It needs to be relatively cheap, and easy to find ingredients.  Non-toxic would be fantastic!  Thanks for any help.

How do I replace worn out front MacPherson struts on a 98 Honda Accord; and how much would it cost me?Note; it seems I can use pre-assembled Monroe "Quick Struts"; would I still need the spring clamps if I us a quick-strut? I've heard this could be potentially dangerous; how would I minimize danger? Other things; would I need to bleed the brakes after? ( I assume yes) What's the basic idea behind that? I would need an alignment I'm going to assume, from what I hear, I can't do that at home - but can I get it "semi-right" to drive it to the shop? I have most of the tools available aside from a torque wrench. If I get a Monroe quick-strut, what other things would I replace? Any bushings/bearings/stuff that would be good to change at the same time? Personal experience, Changing oil/fixing radiator leaks/doing basic maintenance on cars (brake pads/rotors, spark plugs/ distributor cap etc) The easy stuff basically. Honda quoted me at 800, and independent quoted me at 600. I can buy those quick-struts for 180 a pop.

I dont want to buy a new fork cause i know those are never cheaper than 170. i want to know how to make your own front suspension for a mnt bike

K so i have ideas for everything else, can someone come up with a good solid axle suspension for a rock crawler out of knex, i also came up with a torsion bar ifs set up...if you can make a SMALL cv shaft i could make 4wd steering and indipendant as well, but for now i want solid axle! lol i just want to see how many ppl can do all this, steering idea would be good too!

I need help putting a steering system on my knex rally car, can anyone make a steering system for my car?

I love my Xootr Scooter. I'd probably love it even more if it didn't keep trying to kill me. I live in NYC and ride the scooter on both streets and sidewalks. The problem is that whenever the front wheel hits a sudden discontinuity greater than about half an inch, it flips, attempting to take me with it on a 360º journey that would no doubt end with my brains splattered on the pavement.  So far my reflexes have remained fast enough to leap off at the last microsecond; but I'm not getting any younger; which also means I would feel like a fool wearing a helmet to ride the same type of vehicle children so blithely scoot up and down the block on. Anyway: I've looked for inflatable tires that fit the scooter. They don't seem to exist. I've considered trying to add a suspension, but I don't weld and it's probably beyond my abilities anyway. My most recent idea is to use a drill to honeycomb the front tire with holes and then fill the holes with a 'bouncier' substance. (Sugru, perhaps?) Any suggestions, advice, or comments would be greatly appreciated.

Suspension Yoga is made by OmGym and consists of a hammock, and four foot/hand holds, that tie to a tree. It is a really cool thing I would love to practice monkey skills on! Thanks!

As per the gokart rule there is a specific weight limit mentioned..adding suspension springs in each wheel will amount to extra weight of vehilcle...our team has deceided not to use suspension system and at the same time we need to avoid rolling of body.

Please tell me some softwares which can help in doing calculations regarding suspension in cars.i heard optimum k is good. but i cant find it to download it from net.plz help me....

I recently aquired two hydraulic shocks from a moterbike and i was wondering if any of y'all know of anything cool i could do with them as they are currently just sitting around and taking up space but they are so cool that i cant bring myself to get rid of them

We bought an IKEA AKURUM kitchen shortly before it was discontinued. 9I was never told it was going to be discontinued of course). Because of some health issues we are just starting to install it now and I cannot get any of the parts from IKEA . They did not sell us enough suspension rail and we need some more. Bueller? Bueller?

Can any body build a knex rc 10x10 with full solid axil suspension and all wheels actually moving if you can then i will show my pics on here and youtube it really is a knew way to use knex?

I don't think I can drill holes into my walls in my apartment to attach them to, so I thought a free-standing frame would be a good solution, but I can't find plans or prototypes anywhere! Ideas? I would be open to other ideas that didn't involve a frame, as long as they didn't require me to drill holes into walls or rely on possibly unstable studs in an old building.  I'd like something that wasn't in a door frame, but if its easy to use and put up and take down, I'm in. 

Hey boys and girls. Over the past couple of weeks (due to work, mostly) I've been building this computer desk, the original here, and a slightly modified one. I've built it using 3/4" MDF and have it painted a gloss black, similar to the modified version. I'm currently stuck on what to do for support. In the original, he uses file cabinets and some scrap material for supports. In the slightly modified version, he uses desk legs from Ikea.I'd like to do something simple, but I'm kinda lost. I've had two ideas floating around my head for a while but I was wondering if their were any other suggestions y'all might be able to throw at me. First, I was thinking about making legs out of chain-link-fence style posts.Then I had the idea to suspend it. Attaching a cable to the front "bulge" on each side (see pic.), and attach the other end of cable to the wall. Using a piece of 2x4, or the like, screwed to the studs in the wall to support the back edge's. (I hope that makes sense). I'm thinking suspending it might work, but would require a bit more work.The idea of a floating desk sounds really cool, but I can't think of another way to achieve the effect.Any thoughts on getting this thing off the floor, minus the saw-horses, will be greatly appreciated.

I have a ring magnet of about 4 cm diameter and additional magnet pieces. for my science project, i want to suspend one magnet in the air WITH OUT ANY SUPPORT. how can i do it? what are the factors affecting the stability? can anyone tell me the simplest way to perform that? what other shapes of magnet will i need to do that?

For my project, i would like to build a strong round electro magnet. i would like to know how i can build one.. i mean number of turns, current, diameter of wire. can we connect the coil to main power supply directly? i need a very strong magnetic field, one of my purpos is to levitate another magnet with out any support of strings (freely suspending in air). thanx in advance.

I have a 2002 Toyota Sequoia and it has coil springs all the way around. I was wondering if i merely installed some variable rate coil springs (so it still isn't like driving a rock) that have a heavier weight rating if i could load my SUV heavier. On vacation I carry 4 people, their luggage, and a small 14 foot pop-up camper. I'm using a weight equalizer hitch, and as it stands, i am maxed on the back axle and could carry 200 lbs more on the front. If i installed heavier suspension, can i expect my axle and chassis to be able to handle the extra weight? and how much more?

Hi all, I am designing/building a prop ceiling-mounted surgical arm (see reference photos attached) into a 15" concrete slab ceiling for a hospital room set for a tv show. I'm also attaching two sketches of the two different arms I plan on making and I'm hoping some of you clever engineering-types may be able to identify flaws in my schematics before I go too far with the design. If you see something that could pose a danger to the actors or have and alternative suggestion I would be grateful!!! Here are my concerns: 1) what are acceptable stresses on all joints due to weight distribution and actors moving the parts around? 2) the heavy duty industrial casters that tapcon into the ceiling: would they get pried apart as weight is applied gravitationally? 3) can the concrete ceiling handle the live stresses of actors moving the arms? 4) can the horizontal PVC arms handle the weight or do they require a welded metal skeleton? --------------------------------------------------------------------------------------------------------------------- Any feedback would be greatly appreciated; I'm in my research phase of this build now so please let me know your thoughts!!! Thanks, Damian

I am an A level Product design student and I am designing a food trolley for a person with grip and stability issues.  One of the biggest problems with current models is that when they go over the slightest bump or carpet runners/plates e.g. and they will spill and tip whatever is on them. This is a massive problem if the user is carrying hot tea or their dinner, increasing clean up work and generally reducing the quality of life of the user. I cannot think of a relevant method for stabilising the food tray/drink holder without drastically reducing the overall function and massively increasing cost while still allowing the trolley to support the user while they take their food from the prep area/kitchen to the eating area.  A few Ideas I have had:  large pneumatic wheels (solid rubber in most other examples), Some sort of spring suspension, Pistons, A counter weight... I have tried researching stabilisers for cameras but they don't seem to be relevant. Help with research keywords would also be useful as its difficult to know what to look up. Another problem I'm addressing is the aesthetics of the product as most examples just look like hospital equipment not everyday furniture. Currently I am siding on wood as the main material for the frame, If anybody has suggestions that would be better than boring tubular steel I am still in the early stages of development and would appreciate inspiration!

what kind of hall effect sensor would I need to make an electromagnetic suspension device? where from?

Hi all! I go into the wilderness with my research and build electronic gizmos. See this overview of our camp: https://youtu.be/RSKbZFIG62g?t=2m11s and the desk in question! To support this me and Hannah Perner-Wilson have been trying to create tools for infrastructure for backpacking in the wild (also see her wearable studio descriptions http://www.plusea.at/?p=5385). The tool im working on right now is a modular lightweight desk we can suspend between trees. It's actually going pretty great! You can see Matt here soldering and building on this bench. it worked WAY BETTER than expected. I though it was gonna be TOO wiggly, or bouncy and impossible to work on. Turns out, it just worked really well! https://www.youtube.com/watch?v=UJQrnl3-27c the only PROBLEM however was with our panels. I used these sheets of like MDF (or something). They are that material that pegboards are made out of. They were great because they were thin and rigid. But they were still pretty heavy and they absorbed water. I want your advice on materials. I want something that Is rigid! (will hold its own shape under compression and/or tension) Can support lots of tools and stuff on top Strong (will stand up to beatings in the field, and smashproof inside backpack) Thin (packs into backpack well)   Cut-able (less important) (won't give off evil fumes or particles if i need to cut or modify it at home (or even in the field) Not crazy-beans expensive (like it seems like carbon fiber panels are) I was thinking like fiberglass maybe? http://www.mcmaster.com/#standard-fiberglass-sheets/=xu6e5k is that a good idea? Carbon fiber (though super expensive)? what are your ideas?

I am a finalist in the 'Made with Yarn' Contest, and the Judging closed Midnight Nov 21, and I have been going crazy with suspense wanting to know who won the prizes.. Little help?

I want an idea on what car I should build, can anyone give me a decent idea? Im open to almost any idea...

Origins used to make a cream called "Leg Lifts." It's loaded with menthol, Eucalyptus and a bunch of other stuff that makes your skin tingle. I would use it after really long bike rides and it was like a cooling chemical massage. They have now stopped making it and no more is available so I was hoping to reverse engineer it. It was a smooth cream the consistency of ketchup or a heavy hair conditioner. I think I can work out the things that make your skin tingle, but I have no idea what to use for the suspension medium. I searched for foot creams and salves and what I found didn't seem like a good fit. I figure once I come up with a suspension medium, I can just add powdered menthol, eucalyptus, tea tree oils and such until I get something that does the job. What could I use for this suspension medium? It has to be pH balanced, hypoallergenic and edible.

When I follow the link from the news letter to the Oklahoma Suspension Bridge ible I am not allowed to log on.  (I tried several times and was sent to the "I forgot" section, which I used and just entered all my old information.)  I use the login thing up at the top but it just won't register from there.  When I go to the home page and login and then try to go to the bridge, it shows me as logged out, but when I click home again, it has me logged in.  I haven't tried any other ibles yet but will here in a bit and let you know of the outcome.

My entry for kNeXFreek's challenge. It has suspension for all 4 wheels and I think that it looks awsome.  I WILL DEFINITELY NOT POST It took about an hour to make, tell me what you think

Hi, i was wandering of anyone would know of a good quick fix/ temporary fix for the worn seatstay bushes nearest the rear wheel dropouts just above the dropouts? There is some side-to-side play in them. Thanks

Here's my entry for the contest "Random Knex Contest #1" from kNeXFreek I tried to stick to the colors in the image given by kNeXFreek It has independent suspension on all 4 wheels and it can steer with the front wheels edit: I changed the wheels, see the new (first 3) images

Hi, I'm thinking of making a magnetically suspended puppet. The idea is to make a puppet with a neodymium magnet in its head, and suspend it under an electromagnet, using a microcontroller to control the (DC) suspension current. To regulate the current, I'll probably use a D/A converter chip controlling an op-amp current sink, though I might use low-pass filtered PWM D/A conversion. I was thinking of a way of sensing the vertical height where I put a small chunk of metal in the head as well as the magnet, modulate the suspension field slightly at a high frequency (20 kHz?), and have an extra sense coil around the suspension coil. The idea is there would be an induced current in the sense coil from the modulation. This would change as the metal chunk came nearer to the centre of the coil. The signal from the sense coil would go through a high-pass-filter (to remove any low frequency components like mains), an op-amp rectifier, and then a low-pass filter, to produce a sense voltage. I might try both para- and dia- magnetic metals (iron and aluminium) to see which works better. I'm not entirely sure whether this will work, but I'd like to try it as it seems more elegant than using a hall effect sensor. The questions I have are: - How would I go about calculating roughly what length of wire and current I'm likely to need to suspend a given weight? Just a pointer to the relevant maths should be OK - don't feel like you to have to spell it out. - Does it make any difference whether the electromagnet is long or short along its central axis? I had an idea that the field from a longer coil might extend further below the magnet than one from a shorter one, but I don't know if this is so. - Does the method I've described for sensing the height sound practical? Thanks for any help, andy (ganglion)

Collodial Silver (silver ions in suspension - usually water) is supposed to have antiseptic properties. Do you think it would be enough to simply place a piece of solid silver jewellery into water to get more or less the same effect - even if the item was left in solution for, say, a week or so? Thanks.

I have been trying toy design a stand much like necropolian's "knex safe gameboy holder" , but I have ran into a brick wall because I have the Pelican 3x battery installed, which makes it considerably thicker, about 1/4 of an inch.Please help!

Hey guys, I'm starting a new race car project and I need some help choosing to correct guage steel for the frame, suspension arms, etc..  I was thinking I'd use 11 guage all the way around because its strong and easy to weld Inputs? Suggestions? Comments? Thanks 

I was pretty much looking for something that was not a gun to build before knexfreek's contest went up, so I decided to make an ATV (that of which may be posted). It has steering and suspension. I am one to add little bits to something to upgrade it over weeks (if not, months), so it will probably change some before a possible post date. Geonovast helped with the front steering assembly and whatnot.

When i went to my page to check my inbox i looked at my instructables and one had that wooden looky hand next to it in white right next to edit. What is that and what's is mean? The pic wont work so i'll paste it, Knex Suspension Tuck Mods(edit) thats the hand                                                   ^^

Hello,            Have just made a bike trailer and used two  suspension forks  from the front wheel of a scrap bike to mount two 20 inch bmx wheels.Now the frame of the trailer is betweeen 5 and 10 cm below the level of the bike rack on the rear of my bike . Any suggestions as to how to couple the trailer to the bike? If needed I can provide photos if that would help

Using the "Phun Physics Sandbox" program I created a few quality models.... enjoy. This forum will be updated every time I create a new post-worthy contraption. MotoCycle - A detailed motorcycle with shocks. MotoCycle_Penned - Self explanatory for Phun Savvy 'Iblers. Cool_Catapult - Semi-automatic catapult with a firing lever and destructable wall target. Offroad_Jeep - Cool detailed model of a jeep with enhanced suspension, however unrealistic the suspension may be due to its odd angle. Crashcar_2.0 - My second attempt at a crashcar that came out really sweet. This is one of my favorites!!! With decapitation-action crash dummy!!! Button of Mystery - Just a silly contraption I created one day while I was bored. HumveeInteractive_FINAL - A really cool little Humvee with various interactive parts. For some reason this seems to have a low density, although it's not any less than my other projects. -Note- that all controls for the contraptions are described in the info bar of the file, which pops up when you go to save the file.