# COMMUNITY

### related to electric vehicle?

I am going to make an electric vehicle so my question is that how to calculate cost per unit,cost per mile for an electric vehicle? and ways to overcome weight issues so that when a person sits on the vehicle, the speed does not reduce or less.  I am asking this because i want to make a vehicle that will cover many miles with less battery efficiently. I hope that everyone understands that what i am trying to ask

Asked by yaseen_123 4 years ago

### VEHICLE RUST?

I have a 1980 Qld ambulance - which has a lot of rust in the floor - walls and roof of the cabin - I was wondering if anyone had any tips for taking the rust out apart from using oxy and jam cans. Cheers

Asked by KNOBPOLISHER 5 years ago

### Restructureing a Mercedes dashboard

Asked by George Law 8 years ago

### what are the differences between electric bicycles and electric motorcycles? Answered

Asked by mgandhiraj 8 years ago

### how to select motor for any project?

What is the formula to choose a motor to lift load? what parameter should have to consider while selecting a motor?  how much power it consume? which is the best motor for project(say to drive a vehicle/car) brushless dc motor or any other?

Asked by ashu13 4 years ago

### filmy residue on healights?

How do I remove the filmy residue from headlights?  I heard it was with toothpaste.

Asked by CathyS122 4 months ago

### multiple speed setting for an electric vehicle?

Suppose an Ev had to run on different speeds say 30 miles/hr and 40 miles/h and vice versa. So how will the the current and voltage changes according to this situation. Say you have a 400w motor and torque is known already and is calculated according to the required acceleration. In short if you have an Ev and u want to set the ev run on different speeds what are the quantities that have to be checked or monitored (current,voltage) and .If you move from 30 to 40 miles/h what will happen to the variables?

Asked by Nr-Think different 5 years ago

### Knex vehicle project ideas?

I am quite stuck for fresh ideas for knex vehicles so I was hoping anyone could give me new ideas!! or you could just give me a few features that ive not already made to concentrate on. ^_^

Asked by jingo69 7 years ago

### how do i make a wireless vehicle from scrap? (i only really want to know the wireless part)

Asked by jonah888 9 years ago

### Making an amphibious vehicle, but then had a problem...

After watching that one episode of BBC's car show "Top Gear", the one where they do their first attempt at amphibious cars, I had a design idea for one. But after thinking about it for some time, my design brought up some classification questions. 1. In the US, any vehicle with less than 4 wheels is considered to be a motorcycle. If the vehicle I have in mind operates like a car, but has the classification of a motorcycle, AND it can operate as a boat, would it be legally appropriate to label it as an amphibious motorbike or an amphibious car? 2. Taking hydrodynamics, weights and buoyancy into account, the vehicle design so far could hold 2-3 people. If it was two, then the seats would be arranged vertically. If it was 3, then they would be arranged as a triangle. So if it was a three seater, would it be better to have two at the front or at the back? That's all the questions i can think of right now.

Posted by EngineerJakit 3 years ago

### Plastic Vehicle Body

Hey, people. I'm not sure if this is the right place to ask questions about this sort of thing and I can't find anything on the web on the subject. I guess not too many people want to build a vehicle body from scratch. Anyhow, here's my situation. I have a large mobility scooter which I would like to transform into something nice for a Halloween parade. I can't do anything too fancy or professional looking because I don't have the resources for something like that. What I think I'll do is build a frame over which I'd bolt sheets of plastic that are cut in particular forms. Then I'd paint the whole thing with spray paint and touch up with an airbrush. What I need to know is which materials to use. There are all sorts of plastic out there. I won't be forming anything with heat, so at best I'll only need plastic that's not too thick and has a good surface for painting. Also, I don't know what to use for the frame. If you don't know about the materials, any sort of advice or encouragement would be appreciated. Thanks in advance!

Posted by Okendoze 9 years ago

### I am busy with DIY Electric Vehicle in Cape Town South Africa, I need some input?

I am a Motor Mechanic for almost 30 years and I want to change to Electric Motor Vehicle. But I want to construct a Cheaper Method of ConversionI have already designed and configured my drive line to attain high speed using Low power input. I am using a light Motor for the Conversion AC 3.7KW Motor with 3.5 Amp Single Phase. I am also designing  the Alternative Charging Controlling mechanism to and input controller to top up the Batteries.  Using only 6 x  12v 100 am Batteries, I know its low but the Motor will be consuming such low power that it would not need extra Batteries.  Now my question What Electrical components,  Required  I am using a 12 v 1000 w Sinewave inverter, with wellsee power control  now setting up the Curtis Electronic Pedal for the variable drive, what mechanism can I use and disconnecting the power in high speed and switching to the alternative power source. Any suggestions.

Asked by ymallie 5 years ago

### Device to pull a garden cart?

I know how to build a garden cart but I want a device to pull it. I want to be able to sit on it, to control it. I thought about a bike but I was wondering if there was anything I could build that I didn't have to pedal, ect. If I have your permission, I might make an instructable about the top answerer's idea*. If anybody has a question on instructables question, I will try my best, no doubt, to answer your question. Even after I have chosen the best answer, you can still tell me your questions and I will try to answer them until, I don't know, the end of January.  *I will put in the Instructable, if I do one, the name (screen name) of the best answerer. I will note it throughout the process of the vehicle to pull the cart.

Asked by TN777 5 years ago

### Heat storage device for car cabin heater

I want to increase the heat storage capacity of the existing car heater so that I can run the heater (just the fan and a liquid pump) while the engine is off and so I can have a warm car as soon as I start on a cold day. The current heat storage is the coolant circulating in the engine. I want to increase the capacity of that. Instead of simply attaching a liquid reservoir to the heater circuit (to increase the coolant volume), I was considering using a picnic cooler (insulated) box with a coper tube coiled in it. The box would be filled with oil and paraffin. Paraffin melts ≈ 40° C  and I can take advantage of the latent heat of fusion when the paraffin changes phase. The oil is a medium to suspend the paraffin. I need a recommendation of an electric 12 volt pump to circulate the fluid. I request any other thoughts or criticisms.

Posted by nehmo 4 months ago

### Knex vehicles, what's the point? Answered

Asked by MrSillyGuns 7 years ago

### World's Strangest Vehicles

Let's build some of these!http://www.darkroastedblend.com/2007/10/worlds-strangest-vehicles-part-3.html

Posted by ewilhelm 10 years ago

### Human Electric Hybrid Vehicle

The HE Human Electric Hybrid Vehicle It looks like an interesting concept car. Although, it might be hard to find somebody who wants to pedal it. I really like the solar panels on top, and how on the downhill, it charges a capacitor for energy.This HE Human Electric Hybrid Vehicle concept uses the power of your muscles as well electricity stored in the batteries. It allows smooth and constant velocity both uphill (with the help of the electric motor), as well as downhill (when the wheel acts as a generator and charges the batteries). The vehicle can turn 360 degrees maintaining stability all the time. Additional power is acquired from photovoltaic placed on top of the vehicle as well as during de-acceleration from regenerative braking. Elderly and handicapped people that are unable to provide enough kinetic energy can also charge the batteries directly from the grid.

Posted by Brennn10 10 years ago

### spec a dc motor for a vehicle

I am making an electric vehicle. Assume no friction on a flat surface. The vehicle will have two dc electric motors preferably 24v or 48v system as space is an issue(about 3.5 x 4 feet) one motor on each drive axle. The vehicle will weigh 2000lbs have a max speed of 10miles per hour be able to reach max speed in under 5 seconds overall wheel diameter will be 16 inches Can be geared down to attain needed torque but must go up to 10miles per hour. Please include formulas so I can at least know how to do this in the future. I need to know power, torque, rpm needed for electric motor. Thank you

Posted by tshaf 7 months ago

### Simple Torque Calculation!

Hello! I want to calculate the torque for my project.I will have 4 individual motors to move a vehicle around 10kg. Here’s the specs:Wheel weight = 100g Wheel radius = 3” Wheel axis radius = 2” Vehicle weight = 10kg Speed I want to reach = at least 20mph with ease.Because I’m using four motors, I’m assuming torque needed would also be 1/4 of total torque needed to move the vehicle.Thank you! I appreciate any help!

Asked by TylerK84 2 months ago

This is the winning entry from a Specialized Innovate or Die Pedal-Powered Machine Contest. The contest site is a bit frustrating to navigate because it's all slow flash, so skip that and go right to the Innovate or Die Youtube group to see all the entries. I'm skeptical of the developing world benefiting from a flashy tricycle with molded casing, but the concept is going in the right direction.

Posted by ewilhelm 10 years ago

### when making a gear system with a push mechanism, which allows it to move easier? more gears or less? Answered

I am trying to design and build a recreational vehicle with a push system instead of a motor. (similar to one of the old toys were u pushed in a button to rev up a part of the toy and the faster u pushed the faster the speed .) im trying to make it as easy as possible to get the "vehicle" moving.

Asked by curvy77 4 years ago

### What knex sets come with Large tires?

I have built a vehicle and now need large wheels to go with it? Can anyone name any sets with them. I only need two. Oh and bonus points if you tell me a store that sells it!

Asked by Kurty66 8 years ago

### Unmanned vehicular robot fuels itself

03.05.09 -- In all the futuristic visions of robotic technology, there's always one buzzkill that brings them back to reality: the power source. How do you keep robots rolling smoothly? The Defense Advanced Research Projects Agency (DARPA) is funding the development of a robot that may have the answer to this.According to company president Dr. Robert Finkelstein, Robotic Technology, Inc. of Potomac, Md., is developing the Energetically Autonomous Tactical Robot (EATR), an unmanned vehicle robot designed to collect biomass leaves, wood, grass, anything combustible and use it through burning to fuel itself. "The idea is to have a robotic ground vehicle that can go out on long-range, long-endurance missions without human intervention," says Finkelstein, describing it as the ground equivalent of long-range unmanned air vehicles. The EATR will be able to retrieve items of interest as well, or act as a weapons platform....In addition to its military applications, Finkelstein also envisions other applications, such as border patrol or agricultural work.here is the link to the full article

Posted by Goodhart 9 years ago

### how to acquire materials for a gokart/human powered vehicle???

Ok so i once again have a crazy yet bound to work sceme the only problem is i do not have the resources or raw materials basically what i need are a couple good condition yet unwanted bikes naturally i turn to my local thrift stores but oh bummer my pickup truck is out for good (the engine is literally out of the vehicle) so basically i am unable to transport the bikes to my home and since everyone else in my family drives tiny economic cars i am really stuck i could  techinally ask one of my neighbors but that would be akward (i am between 12 and 16 years old) i really need help with this one guys (and girls) any ideas are most appreciated thank you, fidgety2

Posted by fidgety2 8 years ago

### How to service my own vehicle?

How to fully service my vehicle on my own

Asked by D.assassin 9 years ago

### I'm currently working on a mech but I need to get an idea on the interface system, so what would be the best fit for it?

Actually I'm working with a few others on this but (as you would expect) our funding is quite low. Right now however; we're trying to decide what the best type of interface system we could use on our mech (yes a REAL, FULL SIZE, WORKING, Mech.) and so I'm turning to the Instructables community for help. Thanks in advance, Jake PS: If you want in on the project then you can email me (iwantmountaindew@gmail.com) with a list of skills you believe could be useful in the building process and I'll get back to you asap or if you just have a question about it that's fine to.  And to respond to my first (and currently only answer) thanks for the help btw, the motion tracking is a great idea and would help improve the user interface greatly. However, what I'm referring to when I say 'interface' is how you would control and interact with it, your reply was part of the answer and will (hopefully) be implemented into our UIS (user interface system). Thank you and I hope to get many more answers soon. Jake

### FS: BIG electric motors

've got three 36v forklift steering motors. They're big, beefy, and used. Rated as 1 1/3 HP "special" duty. They draw 4.1A no load at 36v. With the gearbox, they draw 4.3A no load. Speed for the motor alone 3225RPM , with the gearbox is 75RPM. Torque must be something outrageous. They have an optional mating 43:1 Sumitomo-made gearbox which I reckon would make these some great drive motors for a large heavy project. Without gearbox, they would be excellent for go-karts, suicidal ebikes, etc. I even know of a e-car project that used a similar motor. (forkenswift) The motors alone weigh about 18lbs. Not sure what they weigh with the gearbox. You want one. I have three. I'm asking \$100 each for the whole motor/gearbox shebang. Pictures:http://www.majhost.com/gallery/Ned/misc/big_motor1.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor2.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor3.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor_4.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor_5.jpghttp://www.majhost.com/gallery/Ned/misc/big_motor6.jpg

Posted by nedfunnell 9 years ago

### Ideal Gear ratio?

Hello i am competing in a design challenge at school. were were each given a 9v 12000 Rpm Motor, the object of the challenge is to build a land vehicle that can go 10m as fast as possible. we will be holding a race on november 3rd to see who has designed the fastest vehicle. anyway my question for the community is using a 12000 rpm electric motor what would be the best gear ratio to use between the motor and the axle to optomise take off speed as well as having a high top speed. (if the gear ratio is to high then the car wont accelerate fast enough to low then the car wont have a fast enough top end) so basicly im looking for that perfect med ground. if anyone here has had much experience with gears and help would be great thanks (PS the vehicle cant be any biger then a vhs case but can be as tall as i want it)

Asked by brl60 7 years ago

### lawn mower uses. Help

How can I make a lawnmower engine power something like a go-kart for under \$20? I don't have a welder but I'm good with tools.

Asked by jimmerforpoy 8 years ago

### Custom Golf Carts

The CBS Sunday Morning show recently covered a story about awesome custom golf carts in the Villages retirement community down in Florida.  The Villages has cart-path infrastructure allowing golf cart access everywhere.  A culture of custom golf carts has since developed, with some really awesome builds.  Can I get one with spinners? CBS Sunday Morning Video via YouTube. Villages Golf Cart Man, mentioned in the video, custom golf cart company.

Posted by CrLz 6 years ago

### How to maintain speed of an electric vehicle with an electronic differential when vehicle is cornering at maximum speed

As the motors are rotating at the maximum speed, how to increase the speed of the outer wheel in order to maintain the speed of the vehicle ?

Asked by SachinK114 1 year ago

### How do I stop a vehicle bomb? Answered

Null

Asked by Zaphod Beeblebrox 9 years ago

### i am going to build an electric vehicle so here is my question what things are to be considered?

I am going to make an electric vehicle so my question is that how to calculate cost per unit,cost per mile for an electric vehicle? and ways to overcome weight issues so that when a person sits on the vehicle, the speed does not reduce or less.  I am asking this because i want to make a vehicle that will cover many miles with less battery efficiently. I hope that everyone understands that what i am trying to ask

Asked by yaseen_123 4 years ago

### How do I remove vinyl lettering from a vehicle?

Null

Asked by kvac 9 years ago

### How would you register a custom built EV? Answered

How would you go about titling and registering a scratch built (Like, from tubing and such) electric vehicle? Since it would be made from scratch, it wouldn't have any VINs. Thanks.

Asked by Zem 8 years ago

So recently I've been wanting to to build some kind of electric mini car/gocart but I have no idea about battery and motor requirements. Basically what I want to know is what would be some battery and motor requirements for such a vehicle, I need to know how many volts, amps, rpm, amp hours, kg per sq cm, motor type etc. I know I'm asking a lot , probably way too much but I'd be really greatful if I could obtain even some of this information.:-)

Asked by DIYWEAPONS 1 year ago

### What should i build as a knex vehicle?! Answered

S10 or hummer h2

Asked by Flatout Knex 7 years ago

### Robot Pegasus design possible? Answered

Ok, so I have another idea that will most likely never get anywhere due to my lack of funds/it not being possible.           What if I made a magnetic track somewhat like a maglev and had a robotic pegasus with electromagnets in its feet. It would also be an ornithopter to get it farther than a few inches off the ground. I would have the magnetic track to have it hover a few inches off the ground for about a minute before and after takeoff to make it less likely to crash on landing and give a minute to text the mayor to not worry about any upcoming pegasus sightings above or around town before taking off.           What kind of horsepower engine would I need to power the wings enough to get sufficient lift (at least 15-20 feet)? And would the electromagnet buffer before landing be significant enough to at least lessen the impact so it doesn't maim/kill you if you crash?           The electromagnets don't seem to me like they would work, but it would still be fun just to hover it to show it off without flying up 20-30 feet and worry about falling. Also, would it make it too heavy to fly if I put in an extra motor to make it walk/run so it doesn't have to be flying to move? I don't really expect this to be within my budget, but it would still be cool.

Asked by ALogan97 6 years ago

### new knex group

I think that anyone that looks at this group should join only if you build knex vehicles because it will get your vehicles shown more widely and you will get more views any body can join but it is only for knex vehicles.

Posted by chevy62 7 years ago

### For vehicles that don't have the bolt inserts, have you or any others figured out how to mount the rails since gutters are no longer found on most cars?

Asked by ChrisA1 on Homemade Roof Rack With Accessories 5 weeks ago

### R/C Car

Hi, I had this r/c car, but I had lost the top, can anyone help vme figure out what to do with it? how can I make a top with plastic? And sorry, but the pics were a little blurry, (the camera was out of focus) but you can still see the basic shape

Posted by zack247 8 years ago

### How can i make a vehicle that can pick objects up and drop them off ??

So me and a school team want to build a vehicle that can perform tasks such as pick up and drop things off. i have experience with building rc airplanes from scratch but i might need a little help with this. any help will be very useful. Thanks

Asked by gibsoncrazed14 6 years ago

### Searching for CAN-BUS overview for VW vehicles

Hello, I want to start hacking my VW CAN-Bus. In detail, i want to sniff some vehicle data (RPM, Indicator status, gear status etc.) For that I want to use an Arduino or RPI with a MCP2515 module. Is there an overview which shows all available identifier for vw vehicles  build Best regards

Posted by julianpe 2 years ago

### 1 year pro membership to whoever figures this out first! I'm trying to remember the name of an old 80's or 90's toy. Answered

Okay everyone, I have been trying to remember what these toys were called for the last couple of years.  They were in the 80's or 90's and could change from a vehicle into a base/battle station. I know I had a few of them.  The two that I remember are a tank that changed into a large base and a three-wheeled vehicle that changed into a gun turret thing (if memory serves me correctly). There was normally a switch or button to press and you would hear a loud gear/spring noise when they changed.  I know it was not a Transformer or GI Joe toy. They had small scaled human figures that were tan in color and a little larger than the figures that came with Technozoids (if anyone remembers those).  The figures were in the same "seated position" (for lack of a better way to describe it) as the Technozoid ones. As I said in the title, there will be a 1 year pro membership to whoever figures this out first!

Asked by skittlespider 6 years ago

### I'm up to something dastardly...

Does anyone here have experience with: -electric vehicles in general, -Prius-style hybrids -deep-cycle batteries -independent rear suspensions -repurposing "free" lithium-ion batteries -The heat output of half a ton of such batteries, and a cooling system that might be up to the job -electric dragsters -building a car from scratch (and I do mean scratch... starting with building the frame) -Using a large gasoline engine to power a generator, the output of which directly powers an electric motor, and any power left over going to the above-mentioned batteries -high performance electric motors -low-performance electric motors -Breaking, destroying, or otherwise rending any of the above components? On a budget?

Posted by Rishnai 9 years ago

### Whats yours called?

I was just wondering, after seeing kiteman's new (ish) car named womble if many out there also named their mode of transport? I used to have a rust bucket of a beige fiat uno that was named bessie! Don't ask me why, even I can't remember!

Posted by beado4ever 9 years ago

### Is this idea for a skateboard kite attachment practical or even a good idea? Answered

I was looking at some of the kite Ible's and had this random idea pop into my head about a way to attach a sail to a longboard to reduce arm fatigue and put more of the force directly on the board. I really don't know much about the physics or anything involved, but i would like to try this.  the image is a two minute MS paint picture to get my point across. shown is a two-tether design, but i assume this could easily be done with a multiple tether set up, and that might be better. Just throwing this out for ideas/comments/criticism.

Asked by ilpug 6 years ago

### What excellent examples in CAD of low drag coefficient pickup trucks exist that are available on the internet?

Vehicles have been designed to minimize the aerodynamic drag with notable success. Production candidate vehicles (such as Aptera, Twike, and Honda Insight) achieving drag coefficients of 0.25 down to 0.11. Solar Challenge vehicles have reached 0.07. Nose cone and fastback upper and sealed or faired lower body designs can achieve significant reductions in drag, and are worth attention. I am attempting to optimize a design for pickup trucks and cross-over utility (CUV) vehicles that are based on the same basic chassis design. Can anyone contribute designs, examples, or sources of information on optimized pickup design? BTW, I am simultaneously searching for a safe design that has the vehicle center of gravity at or below the axle height, as it should be to prevent roll-over accidents. Risk of injury and death are significantly higher in pickup trucks and CUVs than cars, and now pickups and CUVs account for more than 50% of new vehicle sales. This tragic fact needs to be reversed with safer design.

Asked by rkh986 8 years ago

### Identify specific vehicle & counting

Hi all, I am new to here. I am working as web developer & we make IT solutions in various technical field. like cctv, etc. Now I have client & he need to create some system. Need to identify specific vehicle using No plate or I can set to some device to vehicle. Then that vehicle pass some specific point ( this point is not change. Fixed point ) our system need to count no of times these vehicle are passed this point. After these data need to get via computer programme. I can wire Network cable or other cable. Have any idea how can do this ? please help me. sorry for bad English. hope you understand.

Posted by ypmane 3 years ago