Are catalytic converters poisonous?

I've been looking around and it seems like most catalytic converters have palladium in them. I think palladium is mostly inert but palladium salts are highly toxic. I would like to open up a catalytic converter and use the substrate to make a thermoacoustic engine stack. So do you know if it would be poisonous to me to open a catalytic converter? Thanks!

Question by snotty   |  last reply


converting a bike to a trike?

Anyone have info on converting a bike to a trike? My disabled son has balance issues but wants to ride with the family, however we can't afford a new adult tricycle or one of the expensive conversion kits. He's much too large for training wheels to work. I'm hoping to find a way to convert an old bike with minimal expense and no welding.

Topic by valr   |  last reply


Convert generator to motor?

Hey guys I am trying to use the generator in my bajaj platina bike into a motor so that it can be used for as self starter motor as well as generator can this be done..

Question by rajeshlead   |  last reply


A speciel stepdown converter?

Hello guys of instructables! I'm writing on this forum, because I think you the only guys that can help me! My situation: I'm from Europe (Nordic part), and our voltage/hertz is 230v 50hz - I think. What I'm trying to do is using american clippers here in my country, but what I've experienced is that it really going to work because the magnetic motor in the hair clipper is going to make alot of noise and overheat, even tho if you used a stepdown converter (230v to 110v) My request: But yesterday i saw a guy on youtube which said that he had made a revolutionary stepdown converter, that would solve the problem and make american clippers anywhere in Europe - without overheating and noise. Here is the video:  http://youtu.be/I2Ybj1BKjYk?list=UUpnyPxtX9XwOJZbN8qwVoLg And here is a ebay link of the converter: http://www.ebay.ie/itm/181496829039 I think its a bit of a overprice (119.3575$) and I was wondering if there is an alternative, where can either make it myself or buy one as good as that one with same specs and quality.. I hope you guys can help me, I'm a bit of unexperienced guy when it comes to electronics so bare with me.. - josh

Question by joshua1993 


pls help how to make a cable connector / converter

Anybody knows how to make this? the cable connector. thanks.

Topic by bite_brian   |  last reply


how to convert or edit video?

I just have bought a video editting software,but when I use them to convert the format what i want,there is something wrong,I don't know how to settle it,can you give me some advice?Thank you in advance!

Topic by solinda   |  last reply


Convert antique fireplace to simulated.?

I have a wall-mounted porcelain coal fireplace from a French chateau.  It has isinglass windows, so is amenable to diffused light. BUT, all the electric simulators are too wide to fit.  I tried using candles, BAD idea. Then I tried flickering Christmas lights, too constant and not enough color variation. Any ideas? Thank you! -D

Question by Doc Holliday   |  last reply


How to convert an air pump/vacuum into a two mode machine which can blow and suck? Answered

Hi, I'm trying to build a simple robot gripper under a budget using this idea http://makezine.com/projects/universal-robot-gripper/. So from what I understand I need a vacuum cleaner that can change into an air blower with a flip of switch using the same nozzle. Is there any cheap option where i can make something similar? I was thinking of buying a cheap car vacuum cleaner or a cheap air pump and reverse the mode by reversing the motor polarity. Will that work? Really need a quick answer for my project, please help. Thank you! 

Question by KhayhenS   |  last reply


I want to build a 12V DC 0.20A power source

 with 230v ac as I/PI know I have to build a rectifier a full wave, but how to get a particular 0.20 A current plz help....?

Question by anuk07   |  last reply



has anyone made a convertion ible?

I need a convertion one for v brakes to disc brakes for a brake. if nobody has then make one please.

Question by snoo   |  last reply


Convert battery power to low voltage?

Is there an easy way to convert a security system sensor from battery (2 3V lithium batteries) to a wired low voltage line? I have pulled the cover off the sensor (image attached) and it doesn't look too complicated. Other options would be to convert it to POE or USB. Don't know if that's doable or practical. I'm building a house and have an opportunity to never have to replace those batteries, which are not on my "be nice to the environment" list. I have plenty of low-voltage in the house already. There is also built-in solar backup for 12-15 hours for power outages. Thanks for the help.

Question by lgpitman   |  last reply


How to create a binary to alphabet converter ?

I want to create a small circuit consisting of 256 LED's as output and the input will be of 8 double pole type switches(for 1 byte input) which will serve as the input. all i want to do is that with each unique combination of the 8 switches a specific led will glow which will indicate the character for the binary code that is  given as input..... please help me to do this.....

Question by Soumya KantiS   |  last reply


how to convert 12v battery power to 9v? Answered

I need to convert 12v down to 9v(easy) but it must be a high amp output

Question by chippykiff   |  last reply


converting electric golf cart to gas engine?

Has anyone converted a electric golf cart to gas engine do u have instructions of such a project

Question by lightningrod191   |  last reply


convert queen sized material to king sized

I am going to build your plans for  the platform bed with floating nightstands and need to convert the material sizes from queen to king . 

Question by JohnV164   |  last reply


Convert a 13.2 volt tool to 110 ac? Answered

I've got a Woodzig (a super-mini chainsaw) that no longer takes a charge. It's also no longer made.   I'd liker to get out of battery mode altogether. How hard would it be to convert it to ac?  I've emptied a battery pack, so I have a shell with a red wire and a black wire that snaps onto the bottom of the saw. 

Question by mole1   |  last reply


can a gas snowblower be converted to an electric motor?

I have an ancient snowblower with a clapped out Tecumseh engine that burns oil faster than gasoline.  Has anyone done a conversion to an electric motor, and is it feasible ie cost of electricity?  Would I need a 220 VAC outlet or could a 110 motor handle the load?  I live in Alberta, and we get a metric butt load of snow.  Thoughts?

Question by kat_man_2   |  last reply


Convert motion activated prop to timed/random

I've searched for weeks for an answer that doesn't require a PhD in electrical engineering and hope someone here can help. I have a motion activated Halloween prop (walk by and it talks, etc) however, it requires quite a bit of light in order to detect the motion. I'd like to either put it on a timer and/or just let it chatter randomly so that it will actually be useful. I love the phrases he uses more than  the prop itself and plan to remove it's electronics to place in a different prop. However, it's pointless if it remains quiet as we won't have him close enough to a bright light source to make him talk. Help? Thanks Elaine

Topic by eschmeck   |  last reply


Converting a bike into a 50cc moped, any advice?

 What do I do for break lights and turning signals? I'm very technical minded and good with electrical logic, but I don't know the laws/regulation surrounding that area (but I DO know they are required). I've taken driver's training, so I know all the laws/signs ect... I'm looking for advice from people who've done this before. Have you run into any problems? Catches? I have very little idea what is needed to make a gas powered motor to work. How to you take care of a 2-stroke 50cc engine? How do I mount it to my bike frame? should I look out for something in particular when I purchase an engine? Oh, and I live in Michigan (if there is any notable laws here, I plan to go to the secretary of state soon)

Question by nepheron   |  last reply


Wood Converted SWB Recumbent Bike of Awesome!

This is a project coming soon... But I'm so excited I have to share... I'm beside myself in excitement, in fact.All that's left to finish the project is:1. Recondition a bit more chain and add it on2. Add idlers and get my chain line in order3. Cut excess wood and make a SeatBut after I assembled a crank into some 2x4's - and had to step back and laugh. I've seen it before, in person at the maker faire. But to do it myself and see how easy/simple it is... Ha!So I cobbled that together - made a pseudo tie fighter handle bar from some scrap PVC and two Tees... And rode off into the sunset... Until the chain derailed - and then I realized I couldn't make appreciable low speed turns due to chain routing... Both problems can be fixed with an idler - a solution I've yet to install due to Kinematics homework having a due date of tomorrow.So yeah, this is something I've always wanted to do. And I'm totally happy I did it (and happy I bought those cheap bikes at auction last year :p). AND, the front boom is modular. I intend on making it, and have accommodated for, adjustable. So I can go for more incline and a more aggressive seat position. (mind you, this is a single speed :p).Okay, I'm done venting -- feedback?

Topic by trebuchet03   |  last reply



how can I convert an ac welder to a dc?

I have a microwave oven transformer welder that I made and it works ok, but I woul like to convert it to dc. Any information will be appreicated. Thanks

Question by sakimoto   |  last reply


Could i convert an air compressor into a Diesel Engine ??

I've heard its possible to convert a small compressor into a diesel engine ?? could someone post some info on how to do this or point me in any direction ??

Question by stephenniall   |  last reply


how does a gas engine convert heat to energy?

I have a class in school where we have to describe how a car converts heat into energy. i already have the firing sequence right, but i need to know how that makes energy.

Question by galvatron522   |  last reply


How can I convert an AC motor to a generator?

So for a school project, I am required to convert an AC motor to a generator. Actually, it is a table fan of diameter approximately 10-12 inches, and runs on AC power at 220V 50Hz. I want to convert it into a windmill, but I'm stuck on the power generation part. So using materials easily available in a high school physics laboratory, how can I convert an AC motor table fan into a generator? Also, what would the output of the generator made in volts and amperes?

Question by diwakarchopra   |  last reply


Can Anyone Convert This Image to Eagle Schematic And Board?

Can Anyone Make Me A Eagle Schematic And Board? Please Try To Create.......(I'm new to Eagle) Thanks A lot............

Topic by ElectroPro9460   |  last reply


Is it possible to convert a AC water pump to wind generator?

Hello,  I have recently salvaged a 2kW AC water pump and I was wondering if it is possible to use it for wind generator.  The pump uses 3 phase AC (well there are 3 leads, so I guess it's 3 phase)

Question by flakas   |  last reply


plans for Converting a Portable Circular Saw Into a Table Saw?

I'm needing to use a table saw but only have a craftsman circular. I can't afford to buy a true table saw, but I've seen some people make a table and place the circular upside down, using bolts to attach it to the underside of the work surface on these home built tables.

Question by 123roberte   |  last reply


How to convert a gas powered air compressor to electric?

I have an old gasoline engine powered, belt driven air compressor on which the the engine no longer works. Does anyone know of a way to convert it to an electric compressor I can use in my shop? I'm guessing I could remove the engine and use an electric motor, but am not sure how to make the motor shut off when the tank reaches pressure, how many rpms the motor needs to do, or even what kind of motor I need to look for. Thanks for any help you can give me!

Question by WMProgram   |  last reply


how do I convert myTrikke 8 to electric?

Looking for a company in the USA that sells conversion kits at a reasonable price,  and trying to find out which I would need for a 36/48v electric motor converstion kit that would work for my wheel size. Saw one post on here for a kit out of China but holy hell the shipping was mean!  Any and all info is appreciated!  I want to learn to shred on this thing! lol :)

Question by lmaria2 


Best way to convert motor power to wheel power? Answered

I have a dolly cart and motor, and I want to motor to move the dolly cart as slowly as possible (It's already four RPM, but just take that into account in the method you recommend). I need one of the inner/vertical wheels to be spun by the motor. Both the cart and the motor are pictured below. I am using this for time-lapses, so it should be as consistent as possible. What is the best way to connect the two parts so the motor spins one of the wheels?

Question by sblaptopman   |  last reply


Convert a washing machine transmission to a gear reduction drive? Answered

I just completely disassembled an old washing machine. I noticed that if I could pop the transmission open and stop it from agitating it should work as a gear reduction drive that I could use for another project I'm working on. Before I get too far into this I figured I'd ask and see if what I want to do is even possible? As I understand it inside the transmission there is a gear with a rod attached kind of like the drive wheel on an old steam locomotive. It seems by either removing that entirely or maybe modifying it I should be able to get it to rotate in a single direction. Anyone with any experience know if this is even plausible?

Question by David Hoskins   |  last reply



make or convert water pump to solar power. How to do it?

I would like to add a pump to our little fish pound. I donot want to use the power grid. How cn I convert a store bought electric pump to solar power?

Question by beanco   |  last reply


Help me diagnose a check engine light for a patch and my eternal esteem! Answered

Check Engine Light/ Catalytic Converter: A while ago my 97 V6 XLE Camry's check engine light went on and the guys at the dealership who ripped me off to diagnose it ($100) explained that it was a bad catcon. I replaced the part (with much sweat blood and tears) and it solved the problem (light went off) and the vehicle passed emissions testing. Whohoo! Only now the light is back on and I am not savvy enough to just figure it out and not rich enough to buy the diagnostic testing device or to take it back to the dealer. Anyone know of a good way to diagnose for cheap?! 

Question by Kaelessin   |  last reply


I have 3 devices under my car connected to my exhaust, but I dont know what they are or what to do about them?

I have 3 devices under my car connected to the exhaust system. Im unsure about what they are, what I can do about them, or how I can modify these to make the car louder,lighter,and less restricted. The car is not broken and doesnt need repair, this is about modding it. My biggest concern is the last device (3rd picture), because it is big, and most likely heavy. I know the exhaust system will restrict the engine, I also know that the exhaust system has a muffler and a catalytic converter. So my question is   What is this device in the back? How can it be removed/bypassed/replaced/modified to be louder lighter and less restricting? And if I cant do anything with it, what can I do? (the devices are in order from closest to engine to farthest)

Question by fastcar123   |  last reply


How to convert a small 3-wheel bandsaw into a strip sander?

I have an old (fully working) 3-wheel Draper bandsaw made redundant some time back by a new, larger Axminster bandsaw. I think it would be useful if I could convert it for use as a strip sander. Anyone done this? Anyone got any bright ideas?

Question by RayArdia   |  last reply


How to convert this into 3.5 mm universal jack? (Image given) :@

Actually I'm a complete newbie and I'm afraid that I would ruin my speakers if I do it without instructions. Can somebody please give me step by step instructions on how to replace this jack with the universal 3.5 mm jack. :)

Question by Salmanarshad   |  last reply


Anyone know how to convert a sofa bed into pure storage?

I liven SF and am completely out of room at this point. The bed in this hide-away-bed is so uncomfortable, guests don't use it anyway. I want to remove the hide a bed portion, leave the couch and, reclaim the area for storage...  ANy ideas? the couch is the ektorp model from ikea and has springs. this one: http://www.ikea.com/us/en/catalog/products/S79876880 i am decently handy, can get wood, have a drill and jigsaw. thanks for any ideas!

Question by littlebitty   |  last reply



Converting gravitational potential energy into air pressure to launch a projectile?

Hello my name is Aaron! I am a high school senior from northeastern Kentucky designing a pneumatic system of sorts for a science competition and need some help. I will be building a device that converts gravitational potential energy, from a falling mass, into air pressure (or possibly the movement of air depending on the design) to launch a projectile a specific distance (max distance needed is 8.25 m). What I am thinking about doing is using one double action pneumatic cylinder (DAPC) as a bellow in which a falling mass (max 3.500 kg at a max 90 cm) would strike its piston shaft, creating positive pressure within the system. With that positive pressure another DAPC’s piston would simultaneously strike our projectile sending it airborne in theory. Below there is an illustration of my idea, sorry about the poor quality. So what I need help determining is would this design work before I start buying parts? If so what approximate sizes should the two cylinders be and should they be different sizes to maximize the force exerted on the projectile? If you have any other ideas concerning the design or any questions about the project PLEASE feel free to share!!! Below are some of the design rules that pertain to this project along with some notes in italics about them. Thank you very much for your time in advance! ------------------------------------------------------------------------------------------------------------ Description:    -Prior to competition, teams will design, construct, and calibrate a single device capable of launching projectiles into a target and collect data regarding device parameters and performance. Design Constraints:    -The launching force must be entirely supplied by the gravitational potential energy from a falling mass less than or equal to 3.500 kg. Any device part whose potential energy decreases and provides launch energy is considered part of the mass. The mass may consist of multiple discrete parts, which together count as the total mass.    -During each launch, the gravitational potential energy must be converted to air pressure or air movement, which is then used to launch the projectile, either directly (e.g., pop gun style, etc.) or indirectly (e.g., using a pneumatic cylinder to swing an arm, etc.) All device air chambers must start at ambient air pressure and must automatically return to ambient air pressure.    -The launching device (would look similar to this with the adjustable angle to accommodate different ranges), including the projectile and all components, must fit within a 75.0 cm x 75.0 cm x 1.00 m box in ready-to-launch configuration, in any orientation chosen by the team. Weights used to stabilize the device must be within the box.    -The triggering device (would look something like this except elevated with a mass suspended ready to be released) in not considered part of the device and must not contribute energy to the launch. It must extend out of the launch area, allow for the competitors to remain at least 1.00 m away from the launch area, and does not need to return to the launch area after launch. The triggering device must not pose a danger to anyone due to flying parts or excessive movement outside the launch area.    -Teams must provide unmodified tennis, racquet, ping pong, and/or plastic practice golf balls to be used as projectiles. Teams may change projectiles for each launch.    -The launching device must be designed and operated in such a way to not damage or alter the floor.    -Electrical components are not allowed as part of the device or triggering device. The Competition:    -Two targets, designated by small marks on tape on the floor or panels lying on the floor, must be placed in front of and centered on an imaginary line parallel to the launch direction that bisects the launch are. Supervisors are encouraged to place sand, cat litter, or similar substance in the area around the targets to help indicate landing spots.    -The targets must be placed in front of the launch area at distances between 2.00 m and 8.00 m (in intervals of 10 cm). A distance of at least 2.00 m must separate the targets. Target distances must not be announced until after impound is over and must be the same for all teams. Room ceiling height should be considered when setting the distances.

Question by ahoback   |  last reply


can i convert 220v dc to 9v dc.....such that 9v is the power supply of 555 timer.....

No other  supply is given only 220v dc is given....current can 50mA

Question by aruntheaspire   |  last reply


How do I convert an AC device to run on a battery pack?

I have a device that runs on ac (110-120 Vac - 180w). I want to make it portable so that it can run off a battery pack such as AA or 9 Volt or even a custom battery. Is this too much of a power requirement to make it possible??? thanks in advance for your help.

Topic by gadgetcrazy   |  last reply


What do I need to convert my propane grill to burn hydrogen?

I see a lot of conversions from LP to NG, but not hydrogen. Any help would be great! Thanks

Question by ollenii   |  last reply


need to convert 99 town car air suspension to springs, any suggestions?

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

Question by rrollinb 


How do you convert beaded car pad to fit motorcycle?

My husband bought a beaded car seat pad and wants to cut it down to fit his motorcycle, but he doesn't quite know how to go about it.  His major concern is that if makes a wrong cut all the beads might come apart...any ideas or suggestions would be appreciated.

Question by Joan Baker   |  last reply


DIY 4-component Buck converter, no ICs, need help with maths

I'm building a bike light around a Seoul P4 LED and some re-purposed 18650 li-ion cells from a laptop battery. I'll need 700mA constant current and can comfortably fit 8 cells in my enclosure. I've done some reading and I should be able to build a Buck converter relatively easily, but I'm struggling to find any good guides to help me spec the components. I asked on Dave Jones's EEVBlog forums and all the replies recommended either Linear Regulators (wasteful) or something designed using Webbench, which only helps with circuits featuring ICs. As a buck should in theory only need a transistor, a diode, an incuctor and a capacitor I want to build it myself out of through-hole components. Can anyone help with some guides or tutorials on specifying these components please? My degree was Computer Science and I was definitely better at set theory and boolean algebra than anything involving formulae!

Topic by ederfel   |  last reply


i want to convert my sewing machine motor to a dc motor as i need that motor to run my rc car!!;)can you plz assist?

I wanna make a big size rc car that can run really fast!i've learnt how to convert an ac motor to a dc motor but this sewing machine motor has got a 3 pin input with a connected speed controller!i wanna know how to convert this motor to a dc motor so that i can use Li-ion or lead acid battery.but the speed controller is not necessary i just wanna mount the motor on the chassis of my rc car.I dunno if this idea is good but i really wanna try doing this to make my rc car!please help me convert my motor to a dc motor!

Question by M.Brian   |  last reply


Can I convert a three wire plug into a round four wire plug?

Wiring is for an "AC 225 arc welder". It has a round three wire plug on it now but the only outlets I have available are round four wire.

Question by BurtWright   |  last reply