dynamo working?

Working principle of bicycle dynamo

Asked by antony05 6 years ago



I am planning to make electric bicycle with front wheel hub motor drive, how can I calculate the top speed? Answered

I want to make electric bicycle as my engg project and I'm unable to calculate the top speed of my bike. I am going to use 250 watt motor.Also I want to know the max incline plane the bicycle will be able to travel

Asked by Abhisekdai 3 years ago


what is embed video code?

I am trying to put my bicycle trailer on here with my youtube video and i couldnt find anywhere where instructables tell you how to do it.  they have a page where youput your information to  upload but dont tell you anything on how to do it at least i couldnt find it. .

Asked by driftwood8 5 years ago


Always in Enlish? Answered

Hello. My name is David, I´m from Spain and my english is basic and poor. Could I publish my instructable in spanish?. Thank you.

Asked by kptan69 7 years ago


how do you rebuild a rear wheel hub with coaster brake on a schwinn beach cruiser ?

I have all the parts but i'm unable to assemble the hub

Asked by mrmouth 6 years ago



how do I make the gear grip shifter on my daughters bicycle easier to operate? shifting to lower gears needs more torq

My daughters bike has a grip shift for a rear derailleurs, shifting from from easier gears to harder is easy because the derailleur spring assists. when shifting the other way it gets progressively harder to pull the derailleur in. It gets to a point so that my daughter does not have the strength to shift after gear 3 has anyone got a solution, other than hand exercises for my daughter. Thank you

Asked by 8 years ago


Is it difficult to powder coat a bike? is this the best way to paint a bike and is it available in lots of colours?

Is it difficult to powder coat a bike? is this the best way to paint a bike and is it available in lots of colours? I heard it was basically primary colours but does anyone have anyinfo on this?

Asked by bobbymun 8 years ago


Help Building a Three wheel bike

I am trying to turn a 10 speed into a three wheeler for my friend. He has trouble riding a 2 wheeler. Does anyone know how to make one. He would buy one but cost is too high.

Posted by nightninja87 9 years ago


How much torque is required of DC motor to move vehicle?

My motor specification is power=500 W, RPM =2500, motor torque = 1.91 Nm, drive sprocket is 16 teeth, driven sprocket is 43 teeth , gear ratio is 2.38, diameter of wheel is 26 inch. i would like to move a vehicle of weight 150 kg with the speed 10 kmph. what would i do ?

Asked by jpthermalpower 1 year ago


Bioshock bicycle

I want to make a boishock themed bicycle. Any thoughts?

Posted by buspuppie 9 years ago


make water bottle holder for bicycle?

How to construct a water bottle holder for bicycle

Asked by ARTHUR BOSS 9 years ago


Bicycle trailer bed?

Has any one seen a Bicycle trailer that turns in to a sleeping trailer. and yes I have looked on the web I'm looking to build one.

Asked by the pvc bike guy 9 years ago



convert bicycle to recunbent without welding? ?

Convert bicycle to recunbent  with out welding take parts of 2 or more bikes too make 1 bike

Asked by zzjoev 6 years ago


bicycle mods

Saw bicycle cart mod,interesting idea.how do i put two wheels on the front of my bike?

Posted by mr.a.rice 6 years ago


Chainless Bicycle!!

There's a great post over at POPSCI about an awesome chainless bicycle! It uses an innovative wire and pulley system. No more pants caught in the chain??  Way to go Hungary!  Read more at POPSCI

Posted by Culturespy 7 years ago


how to build your own electric bicycle?

I have a bicycle I want to convert to electric. I have heard of ones that are pedaled and electric and the pedaling charged the batteries.

Asked by maryoverton 8 years ago


Galileo Bicycle

Please help; I have tried twice but without success to download the instructions for the Galileo bicycle from https://www.instructables.com/id/Build-Galileos-Bicycle/?download=pdf - what is wrong? The download just stops on its own after about ten minutes and without any indication that anything was downloaded.

Posted by takhaar 7 years ago


Skeleton Bicycle

This skeleton bicycle by Jud Turner looks like the result of an archaeological dig from TRON world. OK, it's not meant to be ridden, but quite bizarre and fun on its own. Link via gizmodo

Posted by fungus amungus 9 years ago


Building a recumbent bicycle frame?

I want to build my own recumbent two wheel bicycle. Where can I get frame parts at reasonable prices. I live in Northern Ireland. Thanksl

Asked by hughgo 9 years ago


epoxy bicycle lugs?

Has anyone tried epoxing steel lugs to make a bicycle frame? if so what type epoxy? thanks

Asked by lugman 9 years ago


A fee to license Bicycles?

Last week, James Vesely, the editorial page editor at The Seattle times, Proposed the idea to Impose a license fee on bicycles, more here What do YOU think?

Posted by koolaidslammer 9 years ago


bicycle generator

Has anyone ever tried to build a generator that would fit inside the bottom bracket of a bicycle using the spindle thats attached to the cranks and pedals? seems it would work better than the ones that rub on the tires.

Posted by oldcrowrich 10 years ago


Bicycle generator for lighting a led strip?

I want to make a bicycle power generator for a fair. I want to make two of those in such a way that the one who pedal faster get more number of led bulbs turn on. Can anybody help me with this kind of project. 

Asked by mick_ralte 3 years ago


how much you spent for bicycle upgrade

Hey/ guys. I'm Tom from moscow russia. need your good advice and help. for my diploma work i need to know how much money an american guy spent to upgrade (to make look better) a bicycle? it very important/

Posted by binom 10 years ago


re-spoke bicycle wheels

When I was much younger, I re-spoked two bicycle wheels off-center and put them on a bicycle for a parade. I don't recall how I did this except it wa s an article in pop. mech. or pop. science magazine, or similar mag. I do remember that I used 24" wheels on a 26" frame and that they must have been less than 2" off-center to fit the frame. It was fairly easy to ride at slow speeds, but terribly hard to go fast, as it would tend to throw you off. It was a lot of fun, though. I hope someone can tell me how to build one of these again. Thank you for any and all help !

Posted by uncle 10 years ago


Monsterbike is a serious bicycle

This video from YouTube user wautur shows off the Monsterbike, a brutal penny-farthing with what looks like a tractor wheel in front. According to his profile, wautur is in the Netherlands, but there's no other info on this one, sadly. Skip to 1:30 to see the bike in action. Related: Crush All Those Who Stand Before You, The Environmentally Friendly Way. via treehugger

Posted by fungus amungus 8 years ago


how to lenghten bicycle frame? Answered

The frame of my bike is too short for me so my back seriously hurts especially up slopes. is it because the frame is too short or the handlebar is too low? if i reposition the saddle backwards, the cycling is a bit better but not a lot. next idea is: i have is to buy longer stem 2nd idea is to buy saddle support (pipe) that is bended backwards.

Asked by Karletto555 8 years ago


How can i make a (strong) electromagnetic wheel, so that when i give voltage it rotates? (in a bicycle)?

Plz refer me to some kind of web site that gives me this info.......

Asked by The Mak3rs 8 years ago


what would you pay?

Hey im just curious what you people would pay for this if it were a bicycle engine kit with a maintenance free engine... it gets 90mpg 35mph and what if it had free installation but looked more professional than in the pictures 

Asked by BIGHAIRYDUDE 6 years ago


A few questions for recumbent bicycle makers

Okay, as the title says, i've got a few questions for anyone who's made a proper recumbent bicycle. First: in the way of moving the handlebars back, how do you attach a bicycle chain sprocket to the top of a fork tube? is it welded? or is it a special type of sprocket with a sort of crankshaft keyway (like engine crankshafts have keyed sprockets for their timing chains) this is obviously to relocate the handlebars further back or under the rider so that you can lean back (as most recumbents allow) Second: if you're to put a larger tire on the rear of your bike (for example, a small (50-500cc motorcycle) rear tire), how would you go about converting the chain link sizes. most motorcycle tires have a shorter link distance, and look like their links are sort of squashed together as opposed to bicycle chains. would you find a way to put a larger toothed sprocket on the rear tire or put a smaller toothed sprocket on one side of an intermediary and a larger toothed on the opposite side? If I have any more i'll post them, these are my pretty basic "burning questions" of recumbent making.

Posted by TheMadScientist 6 years ago


Homemade Recumbents

Why are there not more instructables about building homemade recumbent bicycles? I was only able to find 2 and one was not the type of recumbent bike I'm looking to build, the other had minimal pictures and text to describe the bike. I know more people have built/tried to build them so lets see some instructables about it!

Posted by Handsome-Ryan 10 years ago



E-Bike project (How to choose a suitable DC motor)

Hi Guys, I am currently doing my school project on electrical bicycle. Mind teach me how to choose a suitable e-bike motor to be used and what is the calculation that I needed. I plan to enable the e-bike to support the weight of 100kg with people riding on it.

Asked by rchan10 5 years ago


Help: Mechanical Odometer

I have a bicycle trailer that I use for groceries and such, and hope to use for extended bicycle trips. I would like to get or construct an odometer for the back of the trailer, to advertise how far I've traveled. I've looked around a lot, but have had difficulty finding an non-electric or large-display DIY odometers (ideally, I would like the numbers to be 2 to 3 inches tall, and would like to keep it below ten pounds). I would prefer it to be mechanical only, requiring no batteries or electrical power, but am willing to give on that point for the sake of simplicity of design, weight and cost. If you have any advice where I could find advice or instructions on how I might set something up, I'd greatly appreciate it.

Posted by dreamclassier 3 years ago



Magic Freewheel & Bike Frame

The machine shop I work for had this "great" idea about 10 years ago. Wouldn't it be nice if you could pedal backwards on your bicycle and still go forward? It's like 2 things in one! Not as glamorous as it sounds. So I'm getting rid of some old parts to various "Super Gear" projects including the Magic Freewheel, an Aluminum bike frame, and if you really wanted them I an go dig out some of the old gears in storage too. Make an offer if you want something. We can ship UPS.

Posted by Rainbowlaces 8 years ago


How can I add additional keywords to an existing instructable?

I want to add additional keywords to an instructable I made several years ago and can't seem to figure out where the keywords are when I choose to edit the instructable.

Asked by Toxictom 1 year ago


Drive Shaft To Pulley

Help! How do I attach this pulley (or any pulley) to a drive shaft? Specifically: This Motor: https://www.amazon.com/gp/product/B00O8UKN7I/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 To This Pulley: https://www.amazon.com/gp/product/B00004RAO8/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1

Posted by john.walsh 1 year ago


Two-Wheel Tuesday

Bikes have been on my mind lately. Here's some video inspiration.The insanely good Ryan Leech displays grace and precision in Prague. Julien Dupont uses a motor to explore the city, but impresses nonetheless. Fixies strut their stuff in SF. And for some old-old-old school stuff, here are tricks from over 100 years ago.

Posted by fungus amungus 10 years ago


HELP PLEASE motorised bikes How To Fit Fit a multi cog

I am trying to find how i can fit a multi cog to my wheel and as it is not your normal set up and i need it just like the picture, how to do it Herdan.com a Nth American own the bike and i can't get thru as my emails get rejected and i can't get thru and they know how they did it ....these pics explain better what i want Thanks Any one .........................

Posted by maccaorgordon 10 years ago


Preventing Kicked-in Bike Wheels?

After purchasing the toughest bike lock I could find, I got the wheels kicked in by a frustrated would-be thief who could only get through the plastic coating with whatever tool he was using. (he incidentally got all of the other bikes locked up outside my dorm.) The closest lockers are a 30 min walk away, and they only allow for a small, easily cut padlock. I have an uncharacteristically small dorm room, so racking it in my room isn't really plausible. Any ideas? Maybe a couple of spokes reinforced with steel bar, or a cheap homemade bike shed?

Posted by langleyLGLF 10 years ago


Help me reduce my carbon footprint and big fat gut!

So I'm trying to arrange a set up where every morning I pedal my bike, in a training stand, attached to a car alternator, attached to a deep cycle battery which will ultimately be feeding all those computer peripherals that I have scattered across my desk. No exercise, no DSL, etc. (And no, I don't do subsistence farming in my back yard (yet) so I know I'm not really doing much environmentally besides reminding myself how much energy all those littler peripherals suck.) Anyhow, I've seen numerous articles where people are easily getting 12-14 volts out of their alternator. At a level of effort that feels like 20 mph on level ground I'm getting maybe 3v. Any idea what I'm doing wrong?

Posted by Austringer 10 years ago


diy elec bike assist

I guess I need to explain that I'm an old guy with a bad ticker. I also have some big time balance issues. I needed to get a little more active and work on my balance, so I bought a bike. The bike is about a million year old cruiser, so I had some work to do before I even took off on it. I cleaned and repacked everything. Then I switched out some parts to make it more comfortable. I replaced the sprocket drive set on the 26 inch bike with one from a 20 inch to make the peddles easier for me to reach. I also used the smaller drive sprocket. That might not have been such a good idea as I have to peddle more to get the same distance. I had intended from the start to install a helper motor so the pedal thing isnt really a big deal. I designed it this way. Motor: 24volt 250 watts from a kids scooter toy. drive: friction with a wheel that sits on the rear tire. Now the motor and mount I have worked out just fine. I'm waiting for everything to arrive so I can begin work. My question is about the power source. I really do not want the power source to ever run the bike. I simply want it to assist me climbing hills. I dont want to run out of oxygen (fuel) as is happening now. So this is my planned power set up, please tell me any flaws you see in it. One twelve volt battery 12ah complete with momentary on off switch. Push the button when I need a little assist climbing a slight grade. A completely secondary battery probably 7ah with its own momentary switch just to kick in on top of the first battery. When both are on, It should make a 24volt system for steeper inclines for just a few minutes at a time. What problems do you foresee. Any advice would be helpful. Did I mention I like to tinker with stuff. I found over the years when you buy something you learn to write a check. When you build something you learn lessons that are transferable to all problem solving. And my wife made sure I knew how to write a check early on.

Posted by retrophoto 10 years ago


Is it illegal to use bicycle trailers?

Right, so I want to build a bicycle trailer that will carry a kayak and also is used for something else, but that's for an iBle, and not the point. As we all know, bicycles are considered vehicles in all 50 states. But, trailers that are pulled by motor vehicles have to have registration and tags. Is it so with bicycles? I don't want to break any laws, so if anyone has an answer, I'd appreciate it!

Posted by Bran 9 years ago


Bicycle powered rock tumbler/exerciser

I was wondering if anyone had any ideas for a bicycle powered rock tumbler. Get exercise while watching videos and light tumbling of jewelry or softer stones.

Posted by gemtree 4 years ago