I just bought a knex roller coaster from the thrift store and i dont know what it is
Question by knexinventer | last reply
So i have bottles ranging from 60ml to 500ml that i'd like to make a roller for mixing. The issue is that the only mixers like this are in the $1,000 and up range, it's honestly criminal. see here http://amzn.to/2h6gHYG Anyone have ideas for parts to make a super cheap version of one of these?
Topic by Jollyriffic | last reply
New to instructables forum but have been enjoying all the wonderful inventions. I am trying to make/build me a chain keeper that "looks" like the following: 1. Pedros Chain Keeper (http://www.amazon.com/Pedros-Chain-Keeper-Bicycle-Tool/dp/B000IZEH1K) 2. Butter b1 Chain Keeper (http://www.bicycling.com/gearfinderproductdetail?gfid=66448) These chain keepers are quite expensive: about $10.00 for Pedros and $35.00 for Butter. Also, I'd like the chain keeper to be used for transporting my bike - see a comment on a DIY version at http://www.bikehacks.com/bikehacks/2012/06/diy-bike-chain-keeper.html Appreciate any input/ideas. Cheers.
Topic by riubaring | last reply
Anyone able to make a guide on how to create a DIY tube and pipe roller? Roller's is not the same as benders, benders make sharp bends while rollers make adjustable gradual long archs. Should be able to bend atleast 2" tubing and pipes. Best regards Tom
Topic by randomher0 | last reply
I go through lint rollers like crazy. I hate loose hair. Makes me gag. I saw the infomercial for the new Mr.Sticky rubber lint roller you wash off and its sticky enough like the tape ones. That would save me about a million dollars a lifetime...give or take. Problem is the set is 29$ not bad...but if I could save that money and use it on...1/18th tank of gas that would be so helpful. So , someone, please help me ? Get me started, middle, end, a piece anything. Everyone on this site is brilliant. we could control the world=> Lets start with my rubber lint roller!
Topic by FlatLinerMEDIC | last reply
I'm looking for examples of home-made paper feed / belt drive mechanism - not having any success! Hoping maybe someone has seen or done something similar that I can learn from. The idea is that I have a loop of paper that needs to scroll continuously past a window. The gadget has to fit inside a shoebox (roughly), so I'm not about to take apart some old printers, an old movie projector or a belt sander.Seems to me I need a small motor and some rubber spindles/rollers mounted to a frame. Not so different to a belt sander. But much lower RPM, and HP! So, have you seen any designs that resemble this sort of thing? A DIY belt drive that will run off AA/9v batteries?
Topic by dglp | last reply
I built a vdg and it works. but since the top roller is AL all it does is produce static electricity until it sparks to the AL on the roller. instead of going to the dome. i have to present it at science fair so i need another roller. i was thinking nylon. so i bought a bed frame roller wheel. but i dont know if it is nylon. so does anyone know if there is any thing i could use that would be at hardware stores or any stores?
Topic by DELETED_DELETED_kruser495 | last reply
Rollers mount to a arm that drops down on the paper then spins to feed paper into printer.
Question by bagadaddy71 | last reply
What's the absolute cheapest way I can make a lift for a marble roller coaster project? I'm estimating my roller coaster at 4 ft high. I was thinking of using a Archimedes screw, but how would I go about doing this? What's a household product that would have a motor/gear that I can use to save some money? (I don't have any toy cars) I will be using polytubing and wood base/support for my roller coaster if that matters.
Question by thefobbypig | last reply
Many people still buy and use a NordicTrack Ski Machine, although these machines are not as popular as they once were. I have talked to people who say they just plain wore out a ski machine. The part that wears is the one-way clutch inside the drive rollers. NordicTrack makes the one-way clutch sound very mysterious. In reality it is a one-way needle bearing and is available from Amazon or locally from a good bearing shop. The internal diameter of the one-way needle bearing used in my machine (Challenger, similar to a 303) is 5/8 inch. The outer diameter is 7/8 inch. The width of the one-way needle bearing from end to end is 5/8 inch. I originally had hopes of being able to install new one-way needle bearings, myself; but, they together with the bronze sleeve bearings on either side of the one-way needle bearing inside each drive roller are pressed into place. Pressing bearings is not a job for the average home tinkerer but requires a bearing press capable of exerting tons of pressure in a very precise manner. You can often have a local machine shop press the bearings in your machine's drive rollers. Or, you can send them away to Nordic Track Guy and have them rebuilt for about $33 with a one week turnaround. The core of the rollers really does not wear out, but new rollers are available on the Internet from $65 to $95, depending on the vendor. From what I can find, some models used an alternate size. Check to be certain you order the correct rollers, if you choose to replace. One of my drive rollers suddenly began to hiccup. It seemed that the clutch did not always release immediately when I pulled my foot forward. Then I noticed a little mush in the response when I began to bring my foot back on the push stroke. Before you rebuild or replace your rollers, try this: Remove one side of your Ski Machine. See the second photo and check the exploded diagram in your manual. Four nuts and two screws, all plainly visible, need to be removed. Slide the washers and the roller off of the top side. The shaft and flywheel can be wiggled out of the other side without removing anything from that side. Remove the washers and the roller from that side, too. Flush the one-way needle bearing by squirting some penetrating oil, like Liquid Wrench, into the bearing. Work it both ways with your smallest finger. Push a facial tissue into the shaft hole in the roller and sop away the penetrating oil and any metallic dust it lifts. Do this several times. Let the rollers air dry. A little lubrication is good. People who comment on lubrication for one-way needle bearings use Tri-Flo (I am not familiar with it.) or they use a little ATF transmission fluid. You want enough to lubricate, but not so much that the bearings slip. (But, see the comments below where the oil impregnated bronze sleeve bearings are supposed to supply enough lubrication for the needle bearings.) Put the rollers back in place on the shaft. Check to be certain they grab on the rearward stroke and release on the forward stroke. Reassemble the machine. Do not forget the washers between the roller and the side board. My machine works again as it should. The day will likely come when this simple fix does not help, and I will need to rebuild or replace the rollers then. But, for now, my rollers have a new lease on life. What follows is for your information. The first photo is of a portion of the back cover of the manual that came with my machine. It shows a cutaway image of the drive roller. The black printing is mine. Notice the three cylinders inside the drive roller. The outer two are bronze sleeve bearings. The center one looks like a roller bearing, but is a one-way needle bearing. A one-way needle bearing is essentially a roller bearing, but the rollers are able to move forward and backward a little in their cage. There is a wedge shape for the axle of each roller that causes the rollers to bind between the bearing cage and the shaft when the rotation is in one direction, but they are free in the other direction. Here is a description of how they work with graphics. This link is for an Instructable about a number of modifications I made to our NordicTrack ski machine, including how it can be stored vertically in a closet. If you do not have a digital monitor for your skier, or need to replace one, here is an Instructable on how to make your own from a digital bicycle speedometer. Check NordicParts for any parts you need, also Nordic Fitness Ski Machines. Danny at Nordic Fitness Ski Machines has some very nice new rollers for sale.
Topic by Phil B | last reply
Hello friends i am from india i want to make a van de graff generator from scraths i can not find a wide rubberband can i use a pvc tubing as belt? pls suggest me some material for belt and roller ! thanks in advanced
Question by mihir.sahu.355 | last reply
This is Killer Kobra, my first tube-supported coaster, and I want you (the people of instructables) to help me with the layout. So far I have made the lift and a drop. Now I need you to choose what I should do next out of the options below: option 1:Loop option 2:Zero-G roll The last two pictures show a loop and a Zero-G roll. After the first 7 comments are posted the element with the most votes will be added to the roller coaster. Check back for Updates on what I should do next.
Topic by Tornado96 | last reply
A new idea i recently came up with was to use the ir feature in the wiimote as a gps tracker for line of sight communication... basically, the idea is to build a framework (knex pieces maybe) and then make a track out of something else with lots of turns, ups/downs, a jump or 2, and a stunt track (kind of like a skiing terrain park) on the roof... also an elevator in a corner to take the car up, and finally 2 spiral tracks to also help the car get up easier. i will eventually make a sketchup version of this track and post it, right now its just on paper but still, the layout idea is almost done.the idea is to mount an led throwie thingy using an ir led an a locking push switch (push on, push off to conserve battery life) on the top of an rc car such as a mini cooper (pic 1). i will mount the wiimote at an angle on the top in a way so that the whole track is visible (or as much as possible).heres the idea: the car remote should be hooked up to the computer, and there is a way to do that if u google it an/or look at thisthe wiimote will track the car using the ir, and the computer will then steer the car accordingly. Advantages to that are : 1. the car can start anywhere on the track; 2. there is no need for borders like those "ai" cars which use ir sensors to drive their way around, which i happened to mention in another forum of mine so refer there for pics + description; and 3. it actually tracks the car's location, instead of just avoiding obstacles like those ai cars. this would allow realtime tracking, so it knows to stop the car when it eg. gets to the elevator, ect... now - naturally, this design will have some "blind spots", so there will be laser "tripwires" in those more major areas and have those signals routed through a microcontroller, which will then send out a # respective to the tripped area then routed to the computer, just like an advanced alarm system. for the controller (hooked up to computer), it would be nice to have the whole thing routed through and powered by a single usb port, so instead of integrating a hub, is there a microcontroller that is designed to directly interface with a computer, not just for programming, but for actual realtime commands and stuff like that..?as far as the forum goes, this is just a huge idea now and we each have our areas of expertise... so m asking for ideas about harware, materials, coding, and especially how to directly interface the program to the wiimote...also, comments, questions, and anything else u got is welcome and greatly appreciated.Thanks to all, rak
Topic by raykholo | last reply
Is PVC pipe is necessary in vande graff generator? what should be top roller and bottom roller material..............and if i use 6volt motor then how much voltage will produce
Question by rachit59 | last reply
How many micro knex roller coasters are there on instructables.com?
Question by DELETED_storm391 | last reply
Ok, i was going to make this a ible, but it was'nt that great. so anyways. When i got my first roller coaster pack off of ebay, it didn't have any splicers! =O So i decided to make my own.here's what you need!1 Pack of dum-dums A K'nex roller coaster set that uses tubingthen, eat, eat, EAT!!! teh dum-dums, then get a moist towelette, and rub them until their clean.Then put them inside of the tubing (duh) and then BAM you have new splicers! :D
Topic by Owenmon | last reply
Hi! Just rediscovered my love of roller skating, after 15 years away from it. I am wondering if I should buy a pair of outdoor skates and use them on rinks sometimes, or rink skates and risk them outdoors? I'd check the wheels for rocks before I rode on the rinks, of course. I've never done outdoor riding, but I can't go to the rink all the time, and I'd like to work this into my daily exercise. I'd also like to get into good enough shape to join Portland's active Roller Derby scene. Thoughts?
Topic by mousewrites | last reply
I am working for a small NGO in South East Asia and looking to work out out screen tension problem problem. Is the Newton Roller frames too high end for a small time production. we don't have much money so it would be an investment.
Question by trbdavis | last reply
I have tons of pairs of Converse All-Stars lying around my house, and I've always wanted to convert a pair into roller skates. Does anyone have any experience with doing this, or know a good place to start? I found a website that was selling them, but they were something like seventy British pounds, which seems like quite a bit. Thanks!
Topic by falc0n2600 | last reply
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 | last reply
How to remove & replace ink roller in Sharp EL1197S desk calculator
Question by Julia Anne | last reply
Question by bigdylan91 | last reply
I am in needing of a piece list for this mammoth roller coaster.
Question by TwistedParadox | last reply
Does the screamin serpent cars work on rippin rocket track for example
Question by The_Lost_Carrot | last reply
On youtube people did a lot of POVs for their knex roller coaster. I want to do one too. I don't have a mini camera or that set that comes with a small camera in it. So I want to put my cellphone onto it. My question is how to do it w/o using tape, glue, other materials, or modding the car?. Thanks.
Question by Pizzapie500 | last reply
In order to create a firm massage roller, I'd like to glue a piece of (foam) yoga mat around a short pvc drainage pipe. Would love advice on - 1. Which glue to use between mat and pipe? and between the mat ends? 2. How to not have a bump where the mat ends meet? Thanks!
Topic by mirileh | last reply
About 3 or 4 years ago I got the rippen rocket coaster. After I was done I took it apart and rolled the tubing into a small ball. Now that I got some more tubing and decided to build a coaster. I got out my old tubing and found it to be all twisted out of shape (as in it wonât coil properly). Will this affect the coaster?? And if so, how should I fix the tubing?? Thank you
Question by Killer~SafeCracker | last reply
WHILE ASSEMBLY OF COUNTER SHAFT AND INPUT SHAFT REVERSE GEAR BEARING IS USED.BUT IN SOME CASES FOUND THAT ROLLER IN REVERSE GEAR BEARING IS MISSING. AND IT IS ASSEMBLED AS IT IS. I WABT TO DESIGN SOME POKA YOKE SUCH THAT BEARING CAN NOT BE PLACED IF ONE OF THE ROLLER IS NOT PRESENT. OR SOME POKA YOKE TO CHECK THE BEARING BEFOUR ASSEMBLY AND IT SHOULD CHECK ALL THE ROLLER AND IF ONE OR MORE ROLLER IS NOT PRESENT IT WILL SHOW SOME INDICATION OR ALARM.
Question by ADITYA1991 | last reply
I recently purchased a roller wringer, but having trouble finding a place to secure it to which will remain stable while i crank. The oval washtub i have id small around 30quarts, it fits , i use a piece of wood so the clamps aren't on the washtub.. however the tub id too light weight and falls over if there is no water or clothe in the tub.i will truy and edit this later with a picture and measurements, but off hand i think between the screw clamps it is 14 inches, i would really like ti mount in on my bathtub, outer rim which is 6inches.,since i would have no stability and movements.he vendor i bought ot from said it was normality monuted on a upside down T shaped wood setup, i am not sure what that means. i also don't want to get a bigger wash basin, since i l live in an apartment and space is really limited/ these are the specs from amazon " Clamps open to 1 3/4". The wringer's metal frame size is 15.5" wide. With the crank handle attached it extends the length to 29". The frame height is 8.5" but extends to 10.25" counting the tension screw knob on top. The metal frame is 2" deep with a 6" drip tray the slides into the frame under the rollers. The usable inside width is 11.25" from one side of the roller to the other. Weighs about 15 lbs assembled."
Question by escapefromyonkers | last reply
Hooray!!! Update!!!! Thanks to the people of instructables I have been able to make progress on my micro knex killer kobra. Thanks to your votes I have added a Zero-G roll. Apart from that I have added a cutback and a small hill. Now I have two more options for you to choose from. The last two pictures show what each one is. Option 1: Barrel roll Option 2: Helix Just so you know right after one of these elements I will add a propulsion system that will hopefully give me enough speed to add a few more elements. The first element to get 4 votes wins.
Topic by Tornado96 | last reply
or what elements should a custom one have?? i dont have many pieces but i have at least 5
Question by dltrene | last reply
Question by pudding390 | last reply
When searched on the internet there are many designs with one metal roller and one insulator roller
Question | last reply
I don't know how to create the realistic, strong pipe supports I've seen in videos. will someone please help teach how to make them?
Question by mynci321 | last reply