Toyota corolla DIY Cold Air Intake

So i have this idea, my car came stock with cold air intake, but i want to take it a little farther and do a Ram air intake (the air gets shoved in the car as you drive) what kind of tubing should i use? i have this plastic kind of dryer tubing and some pipe rings (adjustable) would that work? or should i use metal dryer tubing?

Posted by Yerboogieman 9 years ago

Removed intake resonator, now I have a small whine

I removed the intake resonator on my car, now I have a small whine to my engine. I know the resonator takes away noises and stuff, but others have done this and got a low hum, not a whine. I don't like my car sounding like a Ford power steering pump. Why is this?

Posted by Yerboogieman 8 years ago

The Motorcycle Of The Future

Hailed as the arrival of the motorcycle of the future the MotoCzysz E1PC electric motorcycle is burning up the track. With a 100 horsepower (continuous) and 250 pound-feet or torque, it's no slouch. Check it out via Wired's Autopia  

Posted by Culturespy 8 years ago

Overpriced Stuff: Electric Motor Speed Controllers

Commercially, speed controllers for electric motors (electric car size) are very expensive, like on here.That page has a controller capable of 144v at 550a peak (about 90 horsepower peak) for $1250. I just designed a speed controller with parts off of for about $200 that could handle 144v at 690a continuous so it could probably get over 180 horsepower peak.All things considered, their's costs over 10 times as much per amount of power.This seems like a BIG markup. I can understand shipping costs, labor costs, etcetera, but something seems a little messed up here.NOTEI am not sure that the design is quite right, and haven't done it myself, so criticism is good.

Posted by yourcat 9 years ago

Electric Motorcycle batteries

Hi, I have an electric e-motorcycle (Road Runner -several years old) and I need to get new batteries ASAP. Inside it has 2 rechargeable batteries. Does that mean I need to get 2 - 12V batteries, whatever Watts I like, based on however much horsepower I need.

Posted by MielV 8 months ago

Universal motor

After disassembling a hedge trimmer I have obtained a universal motor (meaning it can run on either ac or dc) It has a power rating of 400W, and a label indicates that it has 1/2 horsepower. Does anyone have any ideas as to what to do with it? it's fairly small (15cm X 5cm X 5cm) and in reasonable condition. Thank you for any responses.

Posted by csharpdeveloper 9 years ago

Super basic resource for learning electric motors

I watch an insane amount of YouTube, particularly woodworking, as designing and building furniture is my big passion in life. I have, however, become more and more interested in learning about motors. It has become increasingly obvious to me that literally, every tool in a workshop is simply a motor that turns something. Saws, drills, sanders, planers, jointers, even dust collectors are all nothing more than a motor turning something around and around in a circle.   I just bought a new Table Saw, and during my 6 months of researching, I read all about 1, 2, 3, and even 5 horsepower motors. Single-phase vs. three phase. rpms, 110V vs 120V vs 220 vs 240V etc etc etc... It was all mostly abstract, as I could tell that higher horsepower means "good" and lower horsepower means "less good." But now, I have a lot of projects that I want to build, but I know nothing about motors.  I've been watching a lot of Matthias Wandel on YouTube, and I want to know everything there is to know about motors. Unfortunately, I don't know anything really about electronics at all. But I feel like learning about motors is a great place to start learning. Does anyone have a book or a resource that literally takes things back to motors 101 for 10 year olds?

Posted by Dolmetscher007 1 year ago

Horsepunk Exhibit

Steampunk may be in love with brassy steam-powered devices, but what about the horses? How would the modern world be if everything was still horse-drawn? That's a question that a group of SVA students tackled and will be showing off in an exhibit in the Long Island Museum in Stony Brook, NY. Can someone please stop by to take some more pics when it opens Feb 2? I'd love to see more of this. Horsepower Exhibit linkvia Core77

Posted by fungus amungus 10 years ago

Students Build Car that Gets 2752.3 MPG

Students at Cal Poly have made a car that gets 2752.3 mpg. It has three wheels and moves one person along at just 30 mph, but it can drive most of the way across the U.S. on one gallon of gas. "The 96 pound car has three wheels, a drag coefficient of 0.12, a top speed of 30 MPH, and a modified 3 horsepower Honda 50cc four-stroke engine. It originally clocked in at 861 MPG and has been continuously tweaked to achieve the mileage we see today." Link

Posted by fungus amungus 8 years ago


This is not a scan of the original book, but the original book converted to text with OCR, and strictly proof read with QC controls. Thus the charts, formulas can be copied and pasted into something else.   ELECTRICITY FOR THE FARM LIGHT, HEAT AND POWER BY INEXPENSIVE METHODS FROM THE WATER WHEEL OR FARM ENGINE BY FREDERICK IRVING ANDERSON AUTHOR OF "THE FARMER OF TO-MORROW," ETC., ETC. New York THE MACMILLAN COMPANY 1915   PREFACE This book is designed primarily to give the farmer a practical working knowledge of electricity for use a slight, heat, and power on the farm. The electric generator, the dynamo, is explained in detail; and there are chapters on electric transmission and house-wiring, by which the farm mechanic is enabled to install his own plant without the aid and expense of an expert.    With modern appliances, within the means of the average farmer, the generation of electricity, with its unique   conveniences,   becomes   automatic,   provided   some   dependable   source   of   power   is   to   be had—such as a water wheel, gasoline (or other form of internal combustion) engine, or the ordinary windmill. The water wheel is the ideal prime mover for the dynamo in isolated plants. Since water-power is running to waste on tens of   thousands of our   farms throughout   the country,   several chapters are devoted to this phase of the subject: these include descriptions and working diagrams of weirs and other simple devices for measuring the flow of streams; there are tables and formulas by which any one, with a knowledge of simple arithmetic, may determine the power to be had from falling water under given conditions; and in addition, there are diagrams showing in general the method of construction of dams, bulkheads,   races, flumes, etc.,   from materials usually to be found on a farm. The tiny unconsidered brook that waters the farm pasture frequently possesses power enough to supply the farmstead with clean,   cool,   safe   light   in place of   the dangerous,   inconvenient oil   lamp;   a   small   stream capable of developing from twenty-five to fifty horsepower will supply a farmer (at practically no expense beyond the original cost of installation) not only with light, but with power for even the heavier farm operations, as threshing; and in addition will do the washing, ironing, and cooking, and at the same time keep the house warm in the coldest weather. Less than one horsepower of energy will light the farmstead; less than five horsepower of energy will provide light and small power, and take the drudgery out of the kitchen.   For those not fortunate enough to possess water-power which can be developed, there are chapters on the use of the farm gasoline engine and windmill,   in connection with the modern storage battery, as sources of electric current.

Posted by Lateral Thinker 8 years ago

pedal powered tractor

I'm no designer but here's an idea I've been stewing on for some time. I've hunted but not found any designs for a pedal powered tractor. The very early tractors were very large;could to lots of work; but they only had 2 or 3 horsepower. They ran so slow you could count the piston strokes. The designs were simple and they were work horses. Our new high horse powered gas tools often cann't do nearly as much. The old machines used heavy flywheels; slow to start but they kept on rolling. With the improvements we've made in bike gearing systems why not make a pedal powered tractor that could do serious work with that same heavy flywheel technology?

Posted by Michael Fletcher 11 years ago

Idea: piPod, piPad, piPhone

Okay, so here's the idea.  Inexpensive RaspberryPi computers have lots of horsepower, an SD slot, audio jack, and place to hook a screen...  Why not kludge together your own iPod or even iPad.  Also, slap on one of MIT's cell modules and you've got the iPhone. Sure it might look funky and may even cost more than the real deal, but half the coolness is just to say you did it yourself! (P.S.  Since I just coined the terms piPod, piPhone, and piPad, you've got to send me one if you make it work!  Please?  Pretty please?  Maybe??)

Posted by PS118 5 years ago

Help with wiring

I have disassembled an old vacuum cleaner that runs on 240v/5amps/1200w. I wanted to obtain the electric motor that should perform at 1.5 horsepower. As I was taking it apart I forgot how the switch leads were originally configured. I want to give the motor a test run but I don't want to hit the fuse in my house so I was hoping someone can help me plug the switch in the normal configuration. What order do the brown and blue plugs (that comes from wall plug) fit into the switch? And what order do the blue plugs (goes to motor) fit into the switch? A silly question really but I am new to working with electronics.

Posted by Tyoon 5 years ago

Go-ped scooter: How large an engine can be placed on one?

I'm looking for information about replacing the usual 50cc and smaller engines on one of these with something a bit larger. Maybe the 10-15 horsepower range, so say 100-200cc. I've come across videos about people powering manual wheelchairs by attaching a go-ped scooter to it.  I'd like to see about doing this and upping the speed to about 40mph. I'm a large person and could probably use a bit extra power over a stock engine. Also, a four stroke would be preferable to a two stroke. Adding oil to the fuel is a nuisance.

Posted by Lokisgodhi 8 years ago

A Supercar Made Entriely of Wood

Joe Harmon, a product designer, wanted to show that wood isn't a past's material and that it can be used for high precision engineering. So with a couple of friends and a dog, he's buidling a supercar made entirely of wood (oubvisoulsy not the engine). They even made some of the tools they're using, like a loom to weave the wooden composite!" We aren't really all about mission statements around here; too often, they are phoney and superfluous. That said, here is ours. We are building a high-performance, mid-engined supercar from wood composites as a graduate project at North Carolina State University. Wood will be used whereever possible, including the chassis, body, and large percentages of the suspension components and wheels. The car has a target weight of 2500lbs and a power goal of over 600 horsepower. We aren't trying to sell anything; we aren't trying to save the world, and we aren't advocating that everyone should drive a wooden car. This project is a scholastic endeavour in which are simply trying to explore materials, learn, teach, share ideas, and stimulate creativity. This section details who we are and what we are doing. We hope you enjoy checking out what we are working on. "Joe Harmon DesignFlickr Photostream

Posted by lordofthedonuts 9 years ago

Treadmill Motor Control

I have a Horizon T101-04 treadmill that has a control problem. The motor is definitely good. I suspect that the motor control board is good, and the control panel board is bad. The control will not reset or go into diagnostic mode. I want to replace either the control panel board or the entire control system. The motor is 90V DC. For amperage, the motor label says "19A S6 25%" which has no meaning that I understand, other than perhaps that the maximum amperage is 19. The label says "APMS" rather than "AMPS", and I wonder if the "S6" is supposed to be "SC" for "stall current." All of the characters on the label are very legible. To replace the entire set of controls, I can use an industrial DC motor control, but how much horsepower does the control actually need to be able to provide? I don't think that the one on the treadmill actually provides 19A, and is probably close to 1 HP or so in its capability.  To replace the control panel with something else and keep the existing motor control, what do I need? Do I need some type of complex driver circuit? Does it need feed back from tach sensor to do a good job of keeping the speed steady?  If it will work well, I want a simple control set up like a KB Electronics KBMD-240D to which I will add a safety cut-off switch with a lanyard.

Posted by Ineedacircuit 2 years ago

do i have the right DC motor for a wind turbine?

Hi, ive been using this site for years, first time im posting and its because i think ive bitten off abit more than i can chew but i love projects :) anyway, i have a dc motor i have taken out from an treadmill plugged it into a multimeter n gave it a twist got few volts, all good. what next? i cannot find what i need by looking at the label, it has 2 different horsepowers and also has 4 wires coming out so i dont know what phase it is either it doesnt say RPM and also has 2 different watts (pic included) i understand one is for continious use is that the one i should refer to? :( can someone just prod me in the right direction please? also it has a kind of fan which also spins on the opposite side should i take this off or keep it? and can i use any parts from the rest of the treadmill to help make a charge controller? i was planning on buying 3 aluminium blades around 30" each and wanted more than 2 batteries in my bay, im ordering a slip ring, blocking diode  and dont know what charge controller im going with yet... i have done alot of reading some things just dont seem to specific to me or maybe im just asking dumb obvious questions! any help appreciated

Posted by sharkyali 4 years ago

Fuel economy of the world's longest in-service ship

The Emma Maersk is the second longest ship in the world, and the longest currently in service. It's so large, it looks photoshopped into any picture it appears. Driving such a large ship requires a lot of power. From Wikipedia:The Emma Maersk is powered by a Wartsila-Sulzer 14RTFLEX96-C engine, currently the world's largest single diesel unit, weighing 2,300 tons and capable of 109,000 horsepower (82 MW). The ship has several features to protect the environment. This includes recycling the exhaust, mixed with fresh air, back into the engine for reuse. This not only increases efficiency by as much as 12% but also reduces engine emissions. Instead of biocides, used by much of the industry to keep barnacles off of the hull, a special silicone-based paint is used. This increases the ship's efficiency by reducing drag while also protecting the ocean from biocides that may leak. The silicone paint covering the part of the hull below the waterline is credited for lowering the water drag enough to save 1200 tons of fuel per year.We started talking about energy consumption after watching a practice version of Saul's upcoming E-Tech Keynote, Energy Literacy, and Dave Culp of Kiteship and Speed Sailing did a back-of-the-envelope MPG calculation for this ship:A few more facts about Emma Maersk:Running at her rated 80 Mw, her main engines burn 14 tons of residual fuel each hour. Annually, that's 97,400 tons of fuel. Her auxiliaries, delivering their full 30 Mw, burn an additional 6.6 tons/hour, for a total fuel burn of 20.6 tons/hour. Given 290 steaming days/year (80% capacity factor, which is conservative), this yields a total annual usage of 143,400 tons or about $64.5 million in annual fuel costs.Burning 20.6 tons/hour = 6724 gals/hour. At 31 kts/hour, this equals .0046 nautical miles/gallon. At 6076 ft/nautical mile, that's 28 feet/gallon of fuel burned.The 1200 tons saved by her "revolutionary" bottom paint represents a bit less than 1% of this cost, so increases her fuel mileage to 28.2 feet/gallon.Dave concludes:You gotta haul a lot of containers full of $7 tee shirts to make this profitable.28 feet/gallon!Images from and Wikipedia.

Posted by ewilhelm 10 years ago