Cycle Skates

I once read that technology never dies.  There are people today that still make flint knives and start fires by friction.  Furthermore, these skills have been passed down generation to generation.  To prove the hypothesis, the authors got an old Sears Catalog from the 1890s and picked out two pages of stuff they had never heard of.  They found all of them still available for purchase somewhere. Why then, can I not find the Cycle Skates in this 1923 video?   https://www.youtube.com/watch?v=UjtPn4orR9A They were apparently invented in 1870. (http://pedespeed.blogspot.com/2007/07/following-is-from-leonard-de-vries.html) I cannot find the patent info as they seem to be from France. I know in 2004 someone "re-invented" them as Chariot Skates.   Anyway, I would like to learn how to make my own 1870 / 1923 style cycle skates.    Anyone out there who can help?

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


deep cycle batteries

Can we and how do we convert a normal lead acid battery into a deep cycle battery?

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


fridge cycle logger

Hello all, I'd like to know how efficient my fridge is. To do this, I need to have a record of the on/off cycling that the fridge does: I need to know how frequently it cycles and how long it stays on for. Does anyone know if this gizmo exists? (in the UK) If not, how would I go about making one? Thanks, mm

Topic by marquee.moon 7 years ago  |  last reply 7 years ago


Cycling Desktop Backgrounds

I would like to be able to have an automatically cycling desktop background, like the option on Mac OS X. I'm running Windows XP. Are there any utilities or something available to do this? No, I don't want to create a GIF file of the different wallpapers, that would be enormous.

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


Cycling activity, need help?

Next week, I will have a cycling activity, and I want to buy cycling shorts for my girl friend. Has any one tried http://www.outbackbikers.com/? It seems very cheap, but I am afraid of the bad quality.

Question by Hughes Jessica 6 years ago


cycling machine for father with traumatic brain injury

I am seeking a very resourceful, intelligent builder.  My 79 y.o. father suffered a traumatic brain injury 15 mos ago.  He is minimally conscious and immobile.  We get him into a wheelchair but he gets no movement.  This machine will cycle his legs while he lies in bed.  It is over $9,000 and Medicare does not pay for the device.  I am in leaving a web site address that has information about the machine.  I have alot of other information if anyone might be interested.  http://www.medimotion.co.uk/motomed_models_letto.php I realize that this is a long shot but I thought I might try. 

Topic by carolb4 7 years ago  |  last reply 7 years ago


transponder reader?

I need a small reader built to read the chips we use for cycling.

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


Sheldon Brown... 1944-2008

If you didn't know - Sheldon Brown has passed away :(http://sheldonbrown.com/harris/This makes me sad :(

Topic by trebuchet03 11 years ago  |  last reply 10 years ago


What is the duty cycle of a welder? Answered

Is a 6% duty cycle good? Bad? Terrible? Worth blowing up?

Question by bowmaster 9 years ago  |  last reply 5 years ago


50% duty cycle circuit

Hello i want to make 50% duty cycle circuit frequency is no problem : any frequency thanks

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


Tron™ Light Cycle is for sell

I was just checking out Hammacher Schlemmer and I saw this. I can't believe the technology we have today. If anyone has $55,000 and is willing to spend it on anything, this is for you.

Topic by Dr. Pepper 8 years ago  |  last reply 8 years ago


Cycling Power Meter Details? Answered

Hello, I was wondering if someone could tell me what the specific electronic components of a typical cycling power meter are and how they work together?  The picture is of one by Power Tap that is located in the rear wheel hub.  I'd like to try to build something similar.  All I know is that it uses strain gauges.  I have zero electronics experience but I'm hoping to learn by working the problem backwards. Thanks in advance.

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


Cat Genie Faster Cycling?

Thank you for all your helpful information on Cat Genie.  I used your rotation arm instructions as soon as I got my Cat Genie 2 years ago.  They were simple and easy to follow I am also resetting my cartridges and saving tons of money. I am wondering if you could help with these two additional issues for Cat Genie 1) Inexpensive Cat Genie granules subsitute 2) Speeding up or making the cleaning cycle faster, reducing the time it takes for each cleaning cycle to complete. Thank you! Dave Stern Las Vegas, NV 702-416-4700

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


Up-cycle an electric blanket? Answered

Our non-woven electric blanket has become unreliable and has been retired.    Is there anything useful I can do with the cords or blanket itself?  It's a lot of bulk to put in the trash.  The wires in the blanket make it undesirable as a regular blanket or quilt lining. 

Question by mole1 7 years ago  |  last reply 7 years ago


deep cycle battery pack

Does anybody know what parts I'd need to make a 12v rechargeable battery pack for an upcoming road trip? I also need to know where I can find deep cycle sealed lead acid batteries for this project. I waited long enough to make a lithium ion pack, but now I changed my mind on the battery type to get 12v, and now I have no idea of what protections and electronic components I need for it. I'l post more info on available casing later, but I'll tell you now that it's like a small blue lego briefcase from when I was little. It's about the size of a texbook and I'd like to be able to put it in a small backpack to carry around school sometimes for my windows tablet. Update: I am available to buy any particular case, but wiring in a case can sometimes look bad, so I'd like it to store all wires internally and have a friendly look. Appearance was part of why I switched my plan from li-ion 18650s to lead acid. A block with printed volt and amp information looks better than a group of oddly sized cells. Also, no clocks.

Topic by leaf26 5 years ago  |  last reply 5 years ago


4 wheeled Quad-Cycle!

Has anybody made or thought about making an Instructable to make a 4 wheeled bike-like a car? I've seen them on the Internet for $3-4000. Thought it would be interesting because of higher gas prices.

Topic by potofgold 10 years ago  |  last reply 3 months ago


Help me and win a 3 months PRO membership!

Here's the deal: I won a 3 months PRO membership with this Ible and I need some help. So why not combine the both? So far I have launched my website and people are picking it up. I have done (some) Google Search Engine Optimization and joined a very appropriate Group on Flickr called "Take pictures while riding a bike". However, that's not enough. I would like to intesify my Internet marketing effort so I am looking for: 1. Sites that review new products that are related to cycling and / or photography. 2. Good blog-spots that review these kind of articles as well. 3. Other internet places like, social media, where I could join similar discussions / groups. I promise, I won't just Spam. Note to point 3: I don't have any Facebook friends simply because I don't have a Facebook account (measured in Internet time, I'm a dinosaur). Should I join anyway? Just for this purpose? Share your ideas and sites with me, the best answer (to be decided by me) earns a 3 month PRO membership! Hope to hear from you!! UPDATE: I have rewarded the 3 month PRO membership to Waterbaby. Thanks everyone for all the useful suggestions!

Topic by bertus52x11 7 years ago  |  last reply 7 years ago


What is the best way to turn 6 volts ac from bike hub dynamo into 12 volts dc battery? Answered

I have a bike hub generator and normally you use them to run 6 volt lights but I have 12 volt lights and a 12 volt battery.  I need to change the ac from the dynamo into dc and change the voltage from 6 volts to 12 volts.  I hope in this way to have a bike which will never need to be recharged from mains, as long as I use less electricity than I make from the dynamo.

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


HELP! DRIVEWAY WARNING SYSTEM FOR CYCLISTS

My wife and I are moving to a new house that has a hidden driveway on a bend of a busy road that obscures our visibility as we exit. We are avid cyclists and ride around town on scooters, too. Does someone have a suggestion on a remote activated light system that could call drivers' attention to the driveway as we pull out? We have multiple lights on our bikes, but nevertheless, I'd like to enhance the safety of exiting. My only thought was to hook up some sort of lights to a darkroom timer and activate it for two minutes as we leave, but that would require burying a cable in pvc as far as I could tell, and the driveway is long. In short, it would be super inconvenient. What would be ideal is a remote activated flashing light set on one or both sides of the driveway, powered by battery that activated by the remote and turned off after a short period of time. Any suggestions on products or designs would be appreciated.

Topic by johnson.drj 7 years ago  |  last reply 7 years ago


Can I use fuel prepared for a 2 cycle engine in a 4 cycle engine? Answered

I wonder if it is safe to use the fuel prepared with the 2 cycle engine oil in a 4 cycle engine lawnmower.

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


My Cycle Two Stroke Engine

Hello everyone, I wonder if any one can help me? I have fitted a two stroke engine kit to a cycle of mine, the thing was running perfect for 220 odd miles then starting stopping and would start again after a few minutes of pedalling. I have changed the petrol mixture and this has seemed to alter things slightly, now it will go but will not rev and only goes to a certain speed then starts kangarooing. When I engage the clutch it will not ideal it just conks out. Could there be something wrong with the accelerator perhaps? Thanks a very frustrated Paul

Topic by Paulygriff 5 years ago  |  last reply 5 years ago


need help with 2 cycle motor

So i am having some severe issues with a motorbike i am building. i have an old 2 cycle mccholluch pro-scaper weed eater. i took it apart, cleaned it, put it back together with a brand new plug and it ran nicely. Now, a few days later, it wont even start, not even a putter. i have tried everything, even a hefty shot of ether in the carb, but still nothing. i know i am getting volts to the plug b/c i checked with my meter, but im not sure if im getting spark. it is a brand new plug. any help would be greatly appreciated. thanks.

Topic by the mechanical engineer 8 years ago  |  last reply 8 years ago


60 cycle hum in a power supply

I recently scavenged a 5 VDC phone charger to use as a power supply for my small FM transmitter. I have the transmitter plugged into the computer so I can listen to my favorite internet radio station on the stereo in the living room, rather than only in the office. The whole thing works really well, except that during quiet songs or in between songs, I can hear that 60 cycle hum coming from the radio. Does anybody have any suggestions (cheap, free, or re-purposed parts are a plus) on how to minimize this? I don't want to spend money on this, and simple is my favorite adjective with electronics projects. Can I put a capacitor across the + and - wires to smooth out the power? If so, what size would be good? Thanks for your help! ~PC

Topic by Poppa Chubby 10 years ago  |  last reply 9 years ago


Comber greenway opening.

Saturday 8th November the Comber greenway will be officially opened in Belfast, which is kind of odd I've been riding it for nearly a year since they paved it and a few years when it was an assortment of dirt tracks and swamps. A Community Carnival cycle to celebrate the opening of the Comber Greenway has been organised on Saturday 8th November starting at 9:30am at Walkway Community Centre, Finvoy Street, East Belfast. Full details of the days activities are available below.Carnival program9.30am - Welcome and Wobble Activities at Walkway.Porridge for Pedal Power!Tree PlantingBicycle Obstacle RaceSlow Bike Race10.30am - Ribbon Cutting Ceremony: The Comber Greenway is Open.Community Carnival Cycle to Comber with Paddy Bloomer artist, inventor, explorer and plumber the most exciting mobile spectacle since Mickey Marley's roundabout!Tullycarnet Tuck Stop12.45pm - Eats at the Enler River (provided)1.15pm - Carnival Cycle Continues2.00pm - Pedal Parade into Comber - Refreshments2.45pm - Homewards for the Holywood Arches to arrive by 4:30pmChildren under 16 must be accompanied by an adult and wear a helmet. Information taken from Sustrans.org.ukMore information on the greenway at Comber greenway.tkI'll have updates on this and more late saturday or sunday, it's a big thing for many cyclists and I here in Northern Ireland since it's been threatened by a high speed bus route, the track used to be a railway and it's a lovely ride, though calmer than my usual...

Topic by killerjackalope 10 years ago


What tricks would people like to learn?

Well after a request for an 'ible on basic bike tricks as a follow up to this cycling 'ible I'm wondering what tricks people would like to know about so far the list is:Pulling a wheelieStoppies/endos (stopping or moving with the back wheel in the air)BunnyhoppingSliding in a reasonable manner (as in tailslides)I'd like any other suggestions, the 'ible will include all requested tricks that I can do, heck got any for me to learn? Just throw them at me. If I can I'll add stalls and stuff to this but considering where I live finding a good place to do so is hard (it's still a building site for the most part...)EDIT: The instructable is now up

Topic by killerjackalope 10 years ago  |  last reply 9 years ago


how to make magnetic and fluid resistance based exercise cycle?

Make a stationary exercise cycle with fine control on resistance to rotation

Question by anil.gadgil 9 years ago  |  last reply 9 years ago


How to control DC motor off and on cycles.

I need to control a radio control boat,  i want to cycle the motor on and off to extend the life of the batteries 6 - 12 v 40A my feed would be a normal radio control speed controller Thanks Ian 

Question by ian.collins.771 4 years ago  |  last reply 4 years ago


How to control DC motor off and on cycles. Answered

I need to control the speed at which a pager motor is on or off. I don't need to control the motor speed, just the timing of off and on. What would be the easiest way to accomplish this? (I have some 555 timers and an Arduino Uno so either of these would be preferred methods). I've tried but failed with the 555 timer and a pot to do this.  Eventually I would like to have two pager motors cycling between off and on (pulsating effect). Thank you, -shortdiesel

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


Peeponics doggy urine nutrient cycle system

Hi, I have a dog at home who uses a litter tray. It's basically a large plastic water run off tray with some AstroTurf. Currently, I have a pump that draws off liquids and deposits them into an empty soda bottle, which I flush down the toilet. But I was wondering if there is an easy way to convert the urine into nitrates which I could use in an aquaponics, or peeponics, system? Possibly using an attractive under water garden in a 25 gallon fish tank?

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


Perfect battery?, deep cycle, SLA, help!?

Hello, I am one of a group of people that has designed a mobile ice cream cart.  https://www.instructables.com/answers/Got-any-cool-ideas-for-our-Arduino-run-LED-dance-f/ We are currently using 6 of those 7.2 sla batteries. They are set up as a 24v system. But its not good. They are hard to charge. And have begun to swell. We want two smallish deep cycle batteries, set on two battery chargers. Does anyone know a good place to purchase such batteries? Say, 25 or 30 A/hr. Are there batteries for trolling motors? How much should we expect to pay? There are also larger SLA batteries, but I just don't think they are meant to be drains so deeply. (we play this thing for 12 hrs at a time) Thanks in advance! Tor

Question by torclausen 6 years ago  |  last reply 6 years ago


how to make a inner cycle tube at home Answered

I need to make a small inner tube for a project. I cannot get a custom one made at a smaller size. The length of the tubing should be just 110 mm. i have to use a valve that is made of rubber, plastic or stainless steel ( last option) . The tube goes into a magnet, so i have to be careful that the valve i use must not be iron or any attracting materials. Is there a possibility to make it at home.

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


Recumbent cycle: "blue sky" design query

I am not one of nature's cyclists. I didn't actually learn properly until I was in my twenties. My bike is very old, very rusty and very, very heavy.However, I feel that I "ought" to cycle more, for shopping trips and the like. I quite like the idea of switching to a recumbent, but they are expensive (current available funds: zero).So, I'm playing with the idea of rebuilding my mountain bike into a recumbent (and learning how to weld on the fly?).In the sketch below;The black section is the back of the old bike, turned upside down.The blue section is the front of the donor bike.The red part would need fabricating somehow.I haven't thought properly about steering mechanisms, but probably under the seat, via cables to arms welded to the forks of the will-be-the-back wheel.Would the bike, as I have sketched it, in principle, work?I'm bothered about stability, especially at take-off and landing. Am I worrying unnecessarily? I have access to a second donor cycle. Is there any mileage thinking about "doubling up" the blue section, to make a trike? Not massively wide, but I could add luggage space, or an extra rear-facing chair-style seat.Brakes: before I cut up the bikes, am I right in thinking that I just remove the cables and levers from the handle-bars and add them to the under-seat steering?Gears: the donor bike is a mountain bike, but I never used all the gears anyway. This area is pretty flat - can I get away without any gears?Coasting: although the back of the donor bike ends up upside-down, it is still turning the same way, so I can still coast OK.I'm sure I've missed something obvious...Anyway, even though I've not decided to do this for certain, I'd appreciate any comments or thoughts.

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


difference between marine and normal oil

I need to mix gasoline with 2-cycle oil for my 2-stroke chainsaw and i only have marine 2-cycle oil. is it ok if i use this or do i need to use regular 2-cycle oil?

Question by Sun Gear 8 years ago  |  last reply 8 years ago



i want to increase my cycles speed using gears .what i had to do for that?

I want to increase my cycles speed using gears.what i had to do for that?

Question by 10 years ago  |  last reply 10 years ago


How powerful does a motor cycle motop have to be to pick up a man on a helecopt er chair?

How powerful does a motor cycle motor have to be to pick up a man on a helecopter chair?

Question by dasdew2 9 years ago  |  last reply 9 years ago


Cyclists....

Just for fun this time!We all love bycicles.Enjoy nature, loose some kilos or just having some fun with the kids.I even like to ride if I find the time and the right weather.But what about those courier riders in the city?Those fitness fanatics riding in a pack of 30 and surprising you on a winding mountain road by fully blocking it...The guy hitting you from behind on the traffic lights because he was only looking on his phone...Or maybe this drunk guy in the middle of the night not even realising that he uses the entire road...What is your worst nighmare experience with someone using just legs to get two wheels moving?And: What is your worst nightmare experience as a cyclist yourself?The guy cutting you off while turning and running over your bike?Someone "accidentally" opening their door when you ride past their car?Or maybe these parks constantly blocking the bike lanes and forcing you to go into the traffic?

Topic by Downunder35m 2 months ago  |  last reply 2 months ago


know of any small scale Rankine cycle engines that are classroom safe for a presentation?

Have a school presentation on a thermodynamic process and would like to present a Rankine Cycle but i havent been able to find one that i can build and run within a classroom just looking for a design or directions, even a video that i can use to build one

Question by SLC Student 7 years ago  |  last reply 7 years ago



Where can i find a British Standard Cycle Die (9.35mm diameter, 26TPI) in the UK

Im after a British Standard Cycle Die (9.35mm diameter, 26TPI) to thread a steel stub axel so it will fit inside a bike hub like a spindle (with cones from an old spindle) if anyone knows where i can find one of these please get in touch! :D PS i live in the UK

Question by ooda55 8 years ago  |  last reply 8 years ago


I have 4 cycl car if loss compression would make car no go well and die?

Question by LADY WELDER 4 years ago  |  last reply 4 years ago


How can i use 555 to build repite cycle timer with 15 sec on and 5 min off?

Question by 1loloo 9 years ago  |  last reply 9 years ago


I have an iphone 4 with a mophie juice pack air case, whats the best way to mount it to my handlebars on my bicycle?

I'd like to be able to see my GPS app and be able to change the music playing through my portable speaker so id like to have it centered or close to center on the handlebars. I also have a mini speaker that id likely just velcro to the bars next to the phone. Any ideas?

Question by hueyd 6 years ago  |  last reply 6 years ago


charging deep cycle batteries using solar panels?

Hey everyone:) my dad asked me to build a set up to charge a deep  cycle battery or two using solar panels... if you could point me to a few good instructables i would greatly appreciate it cause i like working with electronics but i'm pretty much self taught and still a noob at it so i'm on here Quite frequently?

Question by qwerty924 6 years ago  |  last reply 6 years ago


How to use an LED Driver Cycle Flash Controller?

Can this device (w/o any other IC's) be used to sequence/chase LED lights.

Question by cgc 1 year ago


Reading the max voltage of a low duty cycle PWM?

How do I measure the maximum voltage reached by a very low duty cycle PWM signal without having to alter the signal. The multimeter shows no reading or gives a very brief wrong reading and falls back to zero. I don't have an oscilloscope. Are there any other alternative set-ups to measure just the voltage in this case. Please suggest.

Question by raftor 3 years ago  |  last reply 3 years ago


ge adora pours water during gentle cycle?

Had this front loading GE Adora washer for 2.5 yrs. OVer last few months it has begun to leak on every cycle except speed wash. Have cleaned out filter, drained water, but it comes back. Don't know if associated, but washer will "dance" and rattle throughout. When the water leaks, it sounds like an open facet. Any help would be appreciated. DId not want to call GE (unknown # and no warranty)

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


Temperature and duty cycle controlling PWM help needed! Answered

Hello, I am working on a Hydrogen generation project. I am using a PWM (pulse width modulator) to control the Generator from going into thermal runaway. However, the current PWM's on the market dont offer temperature control. Only duty cycle control. So I need some help here. I need a way to control a potentiometer to increase or decrease resistance based upon a temperature range from 80 to 95 degrees. I dont want this to turn the unit off, only lower the duty cycle when the peak temp is reached. Then also, when the unit is cold on start up, it would release full amps into it until it reached it peak operating temp. The idea is to make a PWM control the generator via duty cycle (amperage draw) and temperature. Make it a "set it, and forget it" system. My thoughts are using two surface mount thermostatic switches. One for low limit the other for the high limit. Then a relay and another potentiaometer. Theory of operation: On initial start up, the generator is offered full amperage draw of 40 amps(100% duty cycle) until it reaches its operating temperature of 80 to 95 degrees. Once it reaches the peak of the operating temp the upper limit switch kicks open causing a relay to offer a differing resistance (80% duty cycle) that would effectively make the PWM still keep producing hydrogen, but cool down. When or if the lower limit of 80 degrees is reached the lower limit thermostat would close allowing again 100% duty cycle to the generator.  Thus, this system would keep the generator operating at an optimal temperature at all times regardless of outside temperature, and conditions. Current PWM's require the user to manually get them set. If the outside temps are colder the system will work less effectively. If the outside temps are hotter the temps may cause thermal runaway. All operating conditions require the user to be constantly fiddling with, and keeping an eye on the amp draw, temps, and voltage. This means eyes not on the road while driving. Bad ju-ju. I'd like to make this device super simple to operate, and build. With off the shelf items, not custom IC's. Any ideas?

Question by ydeardorff 6 years ago  |  last reply 3 years ago


Self-cycling & Filtering Water system for science project?

I am doing a science project to test the difference in number of suds between different types of foam sponges and nylon loofahs. At my booth, I would like to demonstrate the difference in suds by having water available and adding soap. My question is: Does anyone know of a way that I can build a system that would allow me to dump and filter/recycle the soap water into clean water so that do not have to keep running to the bathroom to get fresh water? Any help is appreciated!  Thank you!!

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


How do i make a Stirling cycle cooler? Answered

I would like to thank the following users for their help: Kiteman, The Skinnerz, steveastrouk, rickharris, Vyger, AndyGadget, iceng.    I would like give a special thanks to "steveastrouk " for telling me to find old papers and work from the first cryocoolers.    I also found out that these are relatively cheap (compared to the other cryocooler systems).    What do i need on building this?    Can everyone give me a help on this?    Thank you :D

Question by jamesc4 6 years ago  |  last reply 6 years ago