Scissor Lifts

Hey guys. I need to build a scissor lift that can fit an 18"x18" frame, and rise up to at least 4 feet. It needs to be very sturdy and stable, but I have no idea where to begin. Please help me out!

Topic by Eman34 6 years ago  |  last reply 5 years ago


Lifting form?

Garage plates water damage; need refresher course on plate raising with threaded rod & concrete.

Question by WendellB8 1 year ago  |  last reply 1 year ago


KNex lift Idea's

Hi there, I was wondering if anyone had any idea's for a knex lift as I currently have no idea's for making. Any help?

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


Knex Platform Lift

Hey everybody!!! Here is a forum topic from my new ball machine lift called: The Platform lift. I have bin working on it for 2 weeks and I am happy with the result.  But one thing I did't solve was the exit track because I tried a lot of things but it just didn't work. I hope you like it. Because there aren't a lot of views and comments I just made some clearer destruction pictures and I uploaded a parts list.  Here is the parts list: Rods: -Green: 143 -White: 37 -Blue: 112 -Yellow: 51 -Red: 3 -Gray: 5 total rods: 351 Connectors: -Dark grey: 29 -Light grey: 3 -Red: 20 -Orange: 6 -Green: 2 -Yellow: 41 -White: 24 -Purple: 82 -Blue: 48 Toltal connectors: 255 Others: -Blue spacer: 71 -Silver spacer: 28 -Tan clip: 12 -Y-clip: 7 -Black hinge: 1 -Blue hinge: 1 -Blue gear: 5 -Red gear: 4 - Knex motor: 1 Total others: 130 Total: 736 Here is a video of it

Topic by CassisDude98 7 years ago  |  last reply 7 years ago


lifting base / platform

I need help on building a small 6 x 6 in lifting base. I'm trying to build a small lifting base to lift up a network camera to a certain height and then turn off once it reaches the desired height. If someone can help me I would be very grateful. Thanks Ecusta

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


New lift ideas.

I have a couple lift ideas that im going to share, but no stealing! >:-( 1. Spoon lift. the ball waits on a path, and a "spoon" that rotates on an axis comes down, picks the ball up and drops it at the top.                             0 ______                              I                              I                          _______ 0 - - - - - o this is a picture of the idea. the ball waits at the ramp (the line) and the two spoonlike things would be the two positions of where the ball would get on and off. the line at the top is the exit path. 2. bar lift. this is basically a chain lift, but with a rod sticking out horizontally. the ball is picked upby the bar, then deposited at the top.                     0            the zero is the chain and the hyphens are the rod. the ball is cushioned                  -------         the chain and rod. obviously, the rod would be connected somehow.                                   This is supposed to be an aerial view, so it kind of looks like a chainsaw. If you want any pictures of these lifts, i will post some pictures. Feel free to post any other ideas for new lifts.                   

Topic by Purple Waffles 8 years ago  |  last reply 8 years ago


Reverse Shop Lifting

You've heard of shop lifting, but have you ever heard of Shop Dropping?"Shopdropping as it's known, is an ongoing project in which artist Ryan Watkins-Hughes replaces the packaging of canned goods with his own artwork, and then shopdrops the items back onto grocery store shelves."Read More...

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


Ways to go about making a mechanism to lift then rapidly drop a small box lid?

I'm looking to build a sound installation that uses the sound of a sheet metal box lid slamming. The box would probably be approx. 6" x 6" x 12". I'd be willing to make it slightly larger. I'd like to have a mechanism inside the box that lifts the lid, then rapidly drops it, either pulling it shut or dropping out of the way. I'm sure a mechanism like this exists somewhere in the instructables for other objects but I'm not sure where to look! Any assistance would be very helpful!

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


Where can i find a body lift kit?!?!?! Answered

Okay!! So I have been looking for a body lift for my 1995 jeep cherokee sport and no luck!!! Can someone plz help?!?!?

Question by arky2b 9 years ago  |  last reply 7 years ago


Electro Magnetic Core Solenoid

Dear Friends, I need to lift a weight of 100 grams or 500 grams weight using a solenoid. I can use any current DC or AC. What is the procedure for calculating this. Please help me. Ramanathan PS INDIA

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


Knex Challenge: Stair Lift

 This is a challenge that is open to all Knex builders.  The challenge is to create a two-path ball machine using 39Shadowman's Stair Lift. The machine must use the stair lift and no other lift systems, and must use the path separator shown in the video. The closing date for entries is 29th December.  I will look at the entries on 31st December and pick a winner.  The winner will receive five star ratings on their next five Instructables (including slide shows and videos). GOOD LUCK!  

Topic by DELETED_KnexLord1 9 years ago  |  last reply 8 years ago


Knex ball machine lift? Answered

Hey guys,Does anyone have the instruction pamphlet for the ball machine with the lift featured in this video?http://www.youtube.com/watch?v=sBDdXyaFQEgIf would would, please let me know, I need a peek at a page or two.Thanks!IaC

Question by I_am_Canadian 10 years ago  |  last reply 8 years ago


lift kit, or stronger springs?

98 toyota camry. lotsa tools in trunk. sometimes a trailer, or bike rack. back end tends to bottom out. just replaced struts. improvement. but still bottoms out some. suggestions?

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


wooden deck lift system?

Is there a simple method for making a pulley/lift mechanism for hauling up groceries, firewood, deck furniture, etc. from ground to 2nd story? needs to be off-set from deck rail by 2 feet. hand cranked? thanks.

Question by connivermann 9 years ago  |  last reply 1 year ago


My new knex lift

Yeah.... I have told you guys that I was building a new lift well... The lift didn't work. I tried everything to get it fixed but it just didn't work. Here is how the lift works: A large arm rotates up and down from 0 dergrees to about 90 degrees by using a crank. The piont was: the motor wasn't strong enough to lift the whole arm. The second thing was that I didn't have enough pieces to make the tracks after it so I will build a smaller version which will probably does work and I will also post instructions for that. Here is the parts list for if you want to know how many pieces the lift took up Rods: Green- 229 White- 126 Blue- 207 Yellow- 82 Red- 12 Grey- 6 Total rods: 662 Connectors Dark grey- 32 Light grey- 24 Red- 68 Green-27 Orange- 26 Yellow- 123 Purple- 112 Blue- 62 White- 20 Total Connectors: 494 Others: Blue spacer- 72 Silver spacer- 38 Mettallic clip - 4 Tan clip- 9 Y- clip- 14 Ball joints- 3 Wheels- 4 Red gear- 2 Blue gear - 1  Total others: 149 Total: 1305  Here are some pictures of  the destruction but i want to keep the real lift a secret untill the second version is finished

Topic by CassisDude98 7 years ago  |  last reply 7 years ago


A website lifting Instructables directly.

I just came across this peculiar website.All it seems to be is a copy of Instructables' "recent" list.I wonder how many other websites like this are out there...?

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


Quadcopter wont lift off? Answered

I have made a quadcopter. However, it wont lift off :( I really need help with that. Following is the list of components I have used: 1) http://www.buildyourowndrone.co.uk/QuadCopter-Full-Motor-ESC-Set-850Kv-p/acq-fmk85.htm 2) 6200mAh, 35C LIPO battery 3) http://www.buildyourowndrone.co.uk/ArduCopter-QuadCopter-v1-0-Frame-Carbon-Fiber-p/ac-frcarbon.htm The weight of the whole copter along with the battery and the components is 1.52Kg which I am sure the motors can lift. I am using and arduino UNO and an MPU 6050 along with a FLYSKY 6Channel Rx/Tx for communication. The motors run on full power, however I am not sure why I can not generate a lift :/ I really need to make it work as this is my final year project. PLeaseeee someone help me :(

Question by Bam Boy 5 years ago  |  last reply 2 years ago


Knex Quarter Arm Lift

My new lift is finished. It was already finished for quiet a long time but for some reason instructables was really slow at my comuter. The lift goes up and down from about 0 degrees to 90 degrees by using a crank which is powered by a motor. For the rest there is nothing special. I worked on it for about 2 weeks Here is a video of it Here is the parts list: Rods Geen- 55 White- 65 Blue-171 Red-2 Grey- 1 Total rods: 387 Connectors Dark grey- 26 Light grey- 0!! Orange-34 Red- 9 Green- 2 Yellow- 35 White-15 Purple- 124 Blue-83 Total Connectors:319 Others Blue spacer- 55 Silver spacer- 51 Red gear- 2 Blue gear- 2 Mettalic clip- 6 Tan clip- 6 Knex battery ppack motor- 1 Knex ball- at least 1 Total others: 112 Total: 818

Topic by CassisDude98 7 years ago  |  last reply 6 years ago


TV Lift Ideas Please

Hello Instructables Community, Looking for ideas on a TV lift. I have a workshop/shed/mancave that has 2 floors. What I'd like to do is frame an opening in the second storey floor for a TV to move through between the first and second floors. Framing the hole is the easy part (licensed carpenter). The part that I need help with is getting the TV to move up and down. I would like it to work with either a wall switch or button on a harmony remote or something. My first thoughts went to cables and pulleys with a winch of some kind, then a garage door opener turned vertical, then gear racks and pinions ... I don't know what to use for the motor or controls. Would love to hear any ideas! Appreciate the brainstorming help!

Topic by mjccox 3 years ago  |  last reply 3 years ago


TV Lift Ideas Please

Hello Instructables Community, Looking for ideas on a TV lift. I have a workshop/shed/mancave that has 2 floors. What I'd like to do is frame an opening in the second storey floor for a TV to move through between the first and second floors. Framing the hole is the easy part (licensed carpenter). The part that I need help with is getting the TV to move up and down. I would like it to work with either a wall switch or button on a harmony remote or something. My first thoughts went to cables and pulleys with a winch of some kind, then a garage door opener turned vertical, then gear racks and pinions ... I don't know what to use for the motor or controls. Would love to hear any ideas! Appreciate the brainstorming help!

Topic by mjccox 3 years ago  |  last reply 3 years ago


Elevator or counterweight lift beds

Can anyone reverse engineer and make one of those elevator beds that are made with counter weights? They are becoming popular in Europe.  Ana White made one using garage door but it uses four corners.  The ones in Europe use only one wall or also add the ceiling across for the other end.  I like the one that spaceurc_com has which uses counter weights. BedUp_fr & espace-loggia_com seem a bit more difficult.  I can build a murphy bed, but these are a challenge and I like a challenge but it is too technical for me. Thanks for your help.

Topic by froman 2 years ago  |  last reply 3 months ago


Heavy aerial lift quadcopter?

Hi, I am in a local competition where they are asking for a quadcopter that can lift a box of lead. The box weigh's 25kg. Yes, you read that right 25 kg. The rules state that it must be a quadcopter and it must fit in a meter by meter by meter cube. This limits the prop size to 500mm diameter unless the height of the blades is different so they overlap. I would prefer not to do this. each rotor must lift 7000 grams (payload + weight of quad). I have been using this thrust calculator : http://personal.osi.hu/fuzesisz/strc_eng/ and according to it a 500mm (20") at 4.5" pitch (I just put that as standard) will need to spin at 6000 RPM to produce 7.12 kg of thrust. It also says it will need an 800 Watt motor. I plan on using these motors http://www.hobbyking.com/hobbyking/store/__24433__NTM_Rotor_Drive_450_Series_1700KV_930W.html. They are 930 watts and 1700kv. they run on a 6s lipo. A 6s lipo is 22.2 volts. 22.2 X 1700 = 37,740. 37,740 RPM is the theoretical speed of the motor. I only need 6000 RPM. 37,740 / 6000 = about 6. so the motor has an 8 tooth gear on it and the prop has a 42 tooth gear on it. This makes a roughly 6:1 ratio to slow down and power up the rotor. The motor is 30A constant current, 42A burst. The ESC will be this one http://www.hobbyking.com/hobbyking/store/__25366__Turnigy_Multistar_45_Amp_Multi_rotor_Brushless_ESC_2_6S.html and the battery will be this two of these: http://www.hobbyking.com/hobbyking/store/__9176__Turnigy_5000mAh_6S_20C_Lipo_Pack.html.          When I started writing this I had a question that I answered myself but now I just want to know if you see any faults with this. PS, the winner of the competition is the one who can hover the longest. I also want to do it for as cheap as possible

Question by monty324 5 years ago  |  last reply 5 years ago


Building a taller lift for my chair

So, I own an  adjustable bar-height stool with min-height of 24" and max-height of 33" and I wonder if it is possible to either   1) retrofit the existing hydraulic lift so I can get 10" more in height  2) Or completely build from scratch a similar hydraulic lift as the one I currently have installed except the new one would provide a max height of about 45"   I would appreciate any tips in accomplishing either of the above listed options please.

Topic by rumpells 3 years ago  |  last reply 3 years ago


What is the difference between a hovercraft lift fan and a hovercraft propulsion fan? Answered

 I'm researching to build a hovercraft, and I am not sure what the difference is between a propulsion fan and lift fan.  I can find a hovercraft propulsion fan that requires 19 hp, but an engine like that is too expensive. The hovercraft lift fan only requires 11.9 hp, and I can afford an engine like that. So I was wondering if I could just use the lift fan as a propulsion fan, if I ever decide to build a hovercraft. I understand the difference in the fans' functions, but what is the difference in the fan itself? is it a different size, pitch or shape? ...All I really want to know is if I could replace the 'propulsion fan' with the 'lift fan'

Question by frankenboom 9 years ago  |  last reply 7 years ago


What would be the best knex ball machine lift without chain and only using 1 motor?

It needs to lift about 6 feet. Thanks!!

Question by dt1234567100 8 years ago  |  last reply 8 years ago


is there any knex instructables that are ball machines, that use the lift of the big air ball machine?

I bought the big air ball machine, and was wondering if there are any instructables that use the lift from it.

Question by the poodleo 8 years ago  |  last reply 8 years ago


Producing Hydrogen to Function as a Lift Gas

The short version: I want to make hydrogen to fill model airship envelopes with, because screw helium. Help me make a cheap electrolysis device that can do this in under an hour (ideally), or come up with an even better system for production. My immediate problem is that I need a high-surface electrode that won't fail in a solution of sodium hydroxide.The long version:I've devoted a fair portion of my time to contemplating airships, primarily because they're awesome. Fell out of use with the rise of much faster aircraft, and the technology its fate sealed by the extraordinarily bad rep the Hindenburg gave it. It is still far from useless, however, in that lighter-than-air systems can lay claim to flight times measured in days, and sometimes months, thanks to the fact that they literally float in the air like a boat floats in water.Their day may have come and gone, but I still want to experiment with the technology and create some model airships of my own. Helium works okay as a lifting gas, but it remains expensive and isn't going to get any cheaper in the foreseeable future. It is for this reason that I am pursuing hydrogen, in the hope that I might be able to produce a cheap lifting gas for my projects. Unfortunately for my aspirations, hydrogen is surprisingly hard to get cheaply in decent quantities. Here's what I've figured out so far.For one, it is absurdly hard to find sites that don't veer into fringe science when talking about hydrogen. HHO production, Joe cells, power your car with water...it all keeps cropping up, and not only does none of this do what I want, the concepts are often poorly documented or riddled with problems. However, I have been able to glean some information from my research. First off, one of the easiest methods (and the one I'll be pursuing the most) of hydrogen production is through electrolysis. For those of you unfamiliar with the concept, you can basically take two electrodes, stick them in water, add some electrolyte (like regular table salt), and apply a decent voltage. You'll get hydrogen gas streaming out of the negative electrode and oxygen out of the positive electrode. Fancier systems use large tanks, platinum electrodes, and a strong acid or base as the electrolyte. To increase efficiency (yeah, it's not 100% efficient), there is ongoing experimentation with high-temperature electrolysis and ongoing research into an effective electrocatalyst.Now, when I did my research, I thought "Hey! This sounds easy! I'll just set the system up like explained, and away we go!" Unfortunately, those exclamation marks were unwarranted. My first attempt showed that production is mind-numbingly slow with small electrodes. Using salt had the wonderful side-effect of producing chlorine and sodium hydroxide, a.k.a. caustic soda. It's called that for a reason, and I'm lucky I didn't run it too long or I might have a chemical burn now. Now I know. Choosing a good electrode turns out to be a problem too, as most conductors oxidize quickly or dissolve in the solution (now I know why everybody uses platinum when possible). My aluminum foil electrodes in a sodium hydroxide solution? Yeah, that didn't work AT ALL. I had better luck with steel mesh, but I recently found that it seems to fail over time too. The only thing that isn't disappointing is the container and the collection apparatus: an inverted plastic bottle with some airtight hose running off it, connected to a gas valve. If the bottle is placed such that forming gas causes the internal water level to be lower than the external container water level, the gas will be pushed through the hose (no pumping necessary!). There was one good thing I discovered, however. Apparently there was a bit of soap or something left over in the container, and I ended up forming a bit of explosive foam as well. The hydrogen foam blows up like nothing else, and the oxygen foam makes a loud pop and sends (slightly) caustic foam all over the place. Totally useless but still somewhat cool, so long as you're not fool enough to do it in large quantities.So, as of right now, I've got a good container and collection system, but my electrodes suck and production rates are so low that it'd take me hours and hours to inflate a good-sized balloon anyway. I'll be using sodium hydroxide in the future as the electrolyte, skipping the chlorine production and observing the proper safety procedures. My top priority is finding a good electrode, my next is finding a good way to increase surface area, and my last is getting a higher voltage source than the 12V power supply I had lying around. Any ideas?

Topic by Cognoscan 9 years ago  |  last reply 8 years ago


What motor should I look into for lifting 50 lbs around 35-40 in. off the ground?

I have a project where I very simply need to raise and lower a flat board with a 50 lbs drill press 35-40 in. and have it stop at the same specific place every time going up and coming down. I've seen TV lift mechanisms and things such as that, but they cost $500 - $1,400. I need this project to cost very little. <$100 if possible. I have a scissor design that I will be made from wood that I already have, so all I need is a motor that can lift 50 lbs up and down, slowly, quietly, and only once or twice a week. But I know nothing about motors.  Here are all the parameters that I can think of.  1.) It will be stationary, i.e. — not require a battery or ever need to be moved.  2.) It must move slowly. Lift the surface approx. 1 in per second. i.e. — around 30 seconds to raise the surface 30 in. or so.  3.) It must be as quiet as is reasonable. It doesn't have to be whisper quiet, but def. not power-drill loud. 4.) It must be as inexpensive as possible.  I do not care about... 1.) Motor weight 2.) Dimensions 3.) Power consumption 4.) Heat production 5.) Longevity... it will be used very rarely so wear & tear is a non-issue really I very much appreciate any help you guys can give. 

Topic by Dolmetscher007 1 year ago  |  last reply 1 year ago


Loft Winch for Fun

Hi, I want to make a fun lifting mechanism which I can use to raise critical beverages, light office supplies, etc., to the loft in our house, where my office is.  It could be manual or motor driven.  It can brace, lean against or grip the square handrail and square balusters,  but can't mar or be screwed into any woodwork or flooring.  Ideas?

Topic by mahoopes 5 years ago


Does anyone have a hoist system to raise my garden tractor cab off the tractor and store on the ceiling of my garage?

I am looking for some help in designing a simple pulley system to lift my Garden Tractor Cab off my John Deere Riding Tractor and store it in my garage. It's a hard roof on my all-weather cab and weighs about 150 pounds max. I would be attaching it to the roof of my garage (both cab doors come off). I want to be able to back the tractor into the garage..and have this system allow me to lift it off, raise to the ceiling and store it until next winter. I have a bad arm so it's tough for me to manage it without this. thanks!

Question by IRONSIDE2 9 years ago  |  last reply 9 years ago


Need hobby motor help

I'm a bit clueless about the technical side of motors. I mean I know how they work and I know torque and speed and whatnot, but I'm looking for certain motors with a certain amount of torque. I'm looking for a motor than can lift approx. 20 pounds plus itself and 3 other motors that have equivalent amounts of torque. I have no clue what the Stall-torque rating is or how it's measured, so a crash course in that couldn't hurt, either. Help?

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


Power Foil Kite? Please someone make instructable?!

Can someone make an instructables or give me info on making a foil kite from easily obtainable materials? After all Foil kites give greatest lift. I would love to boat or skate with a foil kite to pull me along. I would even try a flying myself (albeit  several feet from the ground so i wont kill myself). Please try. . Thanks Instructable COmmunity It doesn't have to be cloth sewed, it can be durable paper, plastic, foil or basically anything. Mainly i just want the basic layout design of the kite, its cells and some knowhow on why the cells inflate. (the winds inflate it, but why?) P.S i seem to have a surplus of garbage bags if any could one for that it would be appreciated

Topic by alester333 9 years ago  |  last reply 5 years ago


Will you be at this year's Maker Faire in San Mateo?

We want to see you there! Last year we paid a visit to each of our authors who were exhibiting at Maker Faire in San Mateo, and hooked them up with a little sumpin'-sumpin'. So, will we see you there this year? Let us know in the comments below, and share a little about what you'll be bringing to the show.

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


Simple 3 Floor Elevator Model

Hello I want to make a simple 3 floor elevator model. The Elevator should have UP and DOWN switches on every floor and should act as all normal elevator.  I need a simple and detailed circuit design and which components should I use for it. Circuit using Arduino Uno R3 is also preferred.  Can someone please help me?  Thanks

Topic by mbmz92 4 years ago  |  last reply 2 years ago


How can I make my robot lower and raise itself from the ceiling?

I working on a something that will be able to move along the ceiling. It will stick to the ceiling using magnets. To get through door ways, I need to be able to make it lower itself from the ceiling, move through the doorway, and raise itself back up to the ceiling. How can I get my robot to lower and raise itself? How can I get it to move horizontally through the air?

Question by mastr924 7 years ago  |  last reply 7 years ago


What is the least destructive way to mount something that will hold about 100lbs?

I'm building a bike mount in my dorm room. I found that with our top floor high slanting ceilings that I fit the bike above with out bumping my head into it, or having it get in the way at all. The tough part if mounting it to the ceiling while still be able to repair the holes when I move out. My bike is angry at me that I leave it out in the rain all the time! Thanks for the help!

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


Radioactive lift controls recalled in France

NEW DELHI (AFP) - India's atomic safety body said Thursday that radioactive scrap metal which found its way into buttons installed into lifts in France had been traced back to a western Indian foundry.At least four Indian firms were involved in the manufacture of the components, an official said, but it was still unclear where the contaminated scrap originated."We are tracking back the whole chain," Satya Pal Agarwal, head of the radiological safety division of India's Atomic Energy Regulatory Board, told AFP."We are taking steps in each place. Exporters have been advised to buy monitors to check their materials before exporting."France's Mafelec firm delivered thousands of lift buttons to Otis, a subsidiary of the US elevator company, which installed them in at least 500 lifts in the country over the summer.Otis has said it is now in the process of removing the buttons, after France's Nuclear Safety Authority announced Tuesday that 20 workers who handled the lift buttons had been exposed to excessive levels of radiation.The French nuclear safety agency has said the lift buttons contained traces of radioactive Cobalt 60.AFP articleSteel items imported {into Sweden} from India showing faint traces of radioactivity were found in Sweden, before the same substance was traced on Indian-made lift buttons in France, officials said Wednesday.The levels of Cobalt 60, a radioactive form of the metal, were considered harmless and the steel components have not been recalled, the Swedish Radiation Safety Authority (SSM) told AFP."Dutch customs discovered that a shipment of industrial flanges from India to Sweden showed traces of Cobalt 60," SSM spokesman Mattias Skoeld said.Focus Agency feedFrench elevator maker Otis said it would remove the buttons from hundreds of lifts it has installed after a radioactivity scare over Indian-supplied materials.The company made the announcement after France's Nuclear Safety Authority (ASN) said 20 French workers who had handled buttons used in lifts had been exposed to to excessive levels of radiation.An Otis spokesman said the firm's plan to remove the buttons "concerned 500 to 600 lifts out of the 2,500 that Otis has installed, modernised or repaired between August 21 and October 9 even if there is no danger for users."The ASN classed the incident at factory of the Mafelec firm in the east-central French town of Chimilin at "Level Two" on a scale of seven because of the exposure of more than 10 people to doses exceeding the reglementary limit.SA Times article

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


Chain lift for K'nex roller coaster?

Hi, can some one give me instructions on how to make a K'nex roller coaster chain lift?  That would be great! :D  thanks in advance! :D

Question by salomon1996 7 years ago  |  last reply 7 years ago


Block and Tackle Help - Adjusting Lift

Hello, I am working on a project that will lift up a flap, that is mounted to the bottom of a screen door, when the door opens. I am using a block and tackle to do the lifting when the door swing open. Everything works as expected but I would like the flap to travel more, move up/down more but I am not sure how to accomplish that. I the attached image, the red X's indicates a non-moveable part. The 2 black circles are pulleys. The yellow line is the rope. The green up/down arrow is the part that I would like to raise up higher. Is there a way to do that without getting too complicated? Thanks!

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


Is there a hidden hinge that lifts a flush floor door?

Hinges for floor door/ trap door Is there a hidden hinge that lifts a flush floor door? As the door will be heavy, I'll use a gas piston to aid lifting and closing. I like the system used in http://kims-kitchen-remodel.blogspot.com/2009/01/basement-hatch.html but the hinges are visible. Thanks for looking!!! Miguel?

Question by greenroofer 8 years ago  |  last reply 7 years ago


lift table from old adjustable bed

Have two old electric linear screw actuators that work great. I Need a lift table but can't figure out how to put it all together. I don't know what width or type of metal use for the lift or the bolt hinges???.  Does it have to be a scissor lift or can I keep the actuators where they are at each end of the bed, wire them to work together and make a lift that way?  I need an affordable way of doing this and it only needs to lift to about 500 lbs. from 17 inches off floor to 30 inches off floor.  All framing is angle iron but seems heavy duty. Anyone's help if greatly appreciated as I just cannot afford to spend $ 1000. + on an electric massage lift table. The pic is after everything but the motor/actuators were removed. Thanks Deb

Topic by DebMaudie 3 years ago  |  last reply 3 years ago


What is the best knex ball lift without chain?

It needs to lift about 6-7 feet. Thanks!!

Question by dt1234567100 8 years ago  |  last reply 8 years ago


What is your favorite K'nex Ball Machine lift type?

     3 years ago, I asked this question to get ideas for lifts in a ball machine I was building. Back then, the spiral lift won (there being only about ten lifts to choose from!). Now that the K'nex ball machine lift roster has septupled, I think it would be fun to see what the response is now. What is your favorite lift, and why?      It was hard for me to decide, but I think I narrowed my favorite down to the Shifting Arm Lift by Shadowman39 and Tornado96. This is my favorite lift because it is fairly compact, easy to extend, and just fun to watch! My decision was also influenced by the fact that I've built this lift and it worked quite flawlessly.      A close second is sandroknexmaster's Falling Arm Lift. The effect of this lift is amazing.      So, I've told my favorites: What are yours? :-) Note: Here is a list of most of the current lifts for those who for some strange reason haven't seen it yet.

Question by MechanicalCreationMaster 5 years ago  |  last reply 5 years ago


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 8 years ago  |  last reply 8 years ago


Small model roller coaster - how to build the lift?

Hello, I've accepted the challenge of building a small-scale (no riders) roller coaster model for use as a prop in my church's vacation bible school next summer.  The vehicles are based on skateboard trucks, and the track is made from 1.5" PVC cut in half lengthwise, secured to a wood frame.  Motion is all gravity-based except of course for the lift hill, and that's where I'm stuck looking for a good design.  The vehicle is expected to remain in motion without intervention for a few hours a day, so the lift needs to engage the vehicle at the bottom, lift it to the top, and release it reliably.  The frame is still a work-in-progress and is easily modified, but for reference it's about 30' wide by 8' deep.  The height of the hill top is also still undefined but I'd expect about 6 feet or so, with any reasonable slope.  Any suggestions?  Thanks for any ideas.

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


how to install permanent air jacks on each tire side operated by 12v compresor system to lift car and change a tire.?

The idea is to install pneumatic jack on each tire. to lift the car when a flat tire occurs. one side at time, the system need to include security system to avoid unintentional or accidental operation when the car is moving. also the system could be hydraulic operated by 12 volts pump

Question by 10 years ago  |  last reply 8 years ago


Will you have to create holes in the lift fan, if purchased??

On a hovercraft will I have to create holes in the lift fan, if purchased

Question by 10 years ago


What is the best ball machine lift that doesn't use tubing or chain? Answered

Question by 182515 9 years ago  |  last reply 8 years ago


what knex lift should i use to make a ball machine ? Answered

i will be making a ball machine but i dont know what lift to use

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


Best way to lift a liquid using heat? (SImple pump designs)

I'm overhauling the design of my solar concentrator and now need a good way of lifting a fluid, so as to pour it into a waterwheel and provide rotation. I have a little solar concentrator and boiler to generate heat or steam. What's the best configuration to give as high a rate of flow as possible? I'm hoping for something in the range of 500 ml per minute, rising about 30 cm. I've briefly played around with the attached setup, which is a very basic bubble or airlift pump,  The black is my wheel, the blue a reservoir for the fluid (ethanol), the white is the boiler putting out steam (ethanol vapour) and the light blue is a mix of the liquid and bubbles of vapour which rise up the pipe and re-enter the wheel. It actually works ok, but even optimally only gives a third the rate I'm after. If necessary I can grab some valves from old bike innertubes, or other basic materials if they'll help. My previous design was to have the bubbles of steam going directly into the wheel, which was filled with ethanol. This works but requires heating 3 litres of ethanol to just under boiling. Not impossible but a bit of a hassle. I'm hoping lifting a liquid instead will be a bit easier.

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