Carbon bike

I have a carbon bike factory in china mainland and can design the carbon bike as you like .You can check the enclosed pircture which we produced for the customer . If you are interested in this ,you can contact me by Msn or mail : Or we can talk about this kinds of products .

Posted by russ110 9 years ago

carbon fiber sheets

I need 2x2 twill, cheap

Posted by freshmanfred0000 9 years ago

activated carbon

Could someone use activated carbon to produce hyrdogen out of water extremely fast because of the huge amount of surface area? Or would that not matter?

Posted by guyfrom7up 10 years ago

Is this what i think it is?

I was taking apart a heavy duty panosonic battery. it didn't say if it was dry cell or not. when i opend it up. and it only had this black powder. it was kind of lumpy. i think its magnesium dioxide. there was also i rod. i took it out and washed it. it is black. i think its a carbon rod since the inside of the battery wasnt wet. it looks like it has little pores on the surface. SO my question is..... is the rod carbon?????????

Posted by DELETED_DELETED_kruser495 10 years ago

Do you know low carbon living ?

As the subject saying, do you know what is low carbon living ?

Posted by bella2009111 8 years ago

Commercial Flywheel

I have searched high and low, but i haven't been able to find any company that manufactures battery-alternative carbon fiber flywheels for commercial use. Can anyone help me out?

Posted by nuncoop 10 years ago

Carbonated water tap

Anyone know how to make a carbonated water tap?

Posted by mmanning5 4 years ago

How does one measure the level of carbon dioxide in the air?

I'm planning to see if more Carbon Dioxide in the air is good for plants, but to do this I need a way to measure (moderately accurate readings) of the concentration of Carbon Dioxide in the air. Money isn't too much of an issue, just not too much (over $100 is too much) but it needs to be quick and easy to use. Ideas?

Asked by Kryptonite 8 years ago

Carbon emissions still increasing despite recession

With the whole economic kerfuffle going on you would've thought that there would be less carbon going up into the air. New studies show that emissions continue to ride, however. The data is collected and analyzed by scientists from the Norwegian Polar Institute and Stockholm University. Researchers found that during the first two weeks of March, the concentration of carbon dioxide in the atmosphere rose to 393.71 parts per million (ppm), up from 393.17 ppm during the same period last year. John Stroem, a scientist with the Norwegian Polar Institute, told Reuters that looking back at data gathered since the 1980s, the increase in carbon concentration levels seems to be accelerating. Carbon Emissions at All-Time High Despite Economic Slowdown

Posted by fungus amungus 8 years ago

Thunderbirds are go!

Abu Dhabi has started to build what it says is the world's first zero-carbon, zero-waste car-free city.Masdar City will cost $22bn (£11.3bn), take eight years to build and be home to 50,000 people and 1,500 businesses.The city will be mostly powered by solar energy and residents will move in travel pods running on magnetic tracks.Finally, the world imagined by Gerry Anderson is starting to be built - whole cities built as one thing, people travelling on monorail pods, centralised desalination plants, massive hydrogen plants... the chances that they will need International Rescue seem greater with every corner you turn.Still, it could be A Good Thing - if it works, this could be a big stimulus to other nations to start working on carbon neutrality with a vengeance. Certainly the promotional video makes the whole thing sound very tempting ...BBC articleMasdar Initiative homepageDeveloper's promotional video

Posted by Kiteman 10 years ago

candle's black smoke deposit seems not to be electrically conductive

(This is the first topic of the "failed experiments" group.)I was wondering if the black smoke of the candles could be electrically conductive (carbon) when deposited as a layer over a piece of glass.After a quick and basic experimentation, it seems it is not.Here is how I proceeded :- I've put a piece of glass over the flame of a candle so a black smoke deposit appear on its surface.- I did so that it becomes opaque (if you want to try, be careful that the piece of glass may break because of the heat)- then, I used two crocodile clamps to make the contact (I've put a certain depth of aluminum foil between the claws of the clamp and the piece of glass)- then, I tried to measure the resistance with a multimeter, but the multimeter displayed no value at all.

Posted by chooseausername 10 years ago

Energy return on investment for various different energy sources

We're used to thinking about the cost per unit of energy (e.g. $/gallon of gasoline) with the implicit assumption that cost is a rough indicator of what is required to obtain that energy. The Oil Drum has a nice piece on Energy Return on Investment (EROI) and the implications of using low EROI energy sources. To dive right in, it's instructive to think about the EROI of domestic oil production as a function of time:100:1 in 193030:1 in 197011-18:1 in 2000EROI on the Web part 2 of 5, (Provisional Results Summary, Imported Oil, Natural Gas)Energy return on investment, sometimes called EROI and sometimes called EROEI, is thought by many, including myself, to be a critical issue for determining the past, present and future status of human society. It is usually considered in terms of energy return on energy investment, but it can also be considered in terms of energy return on monetary investment. While much of human progress has been attributed, rightfully, to technology, much of that technology has been a means of using more energy for human ends. This is true for fire, knife blades and spear points (energy concentrating devices), the development of agriculture and the increase in its productivity and, essentially all aspects of the industrial revolution.EROI is simply the energy delivered by an energy-obtaining activity compared to the energy required to get it. If the numerator and denominator are expressed in the same units (barrels per barrel, MegaJoules per MegaJoule) the result is a dimensionless ratio, i.e. 100:1 or 10:1). Obviously a higher ratio implies a more desirable fuel than a lower one, other things being equal (which is rarely the case). The concept is extremely simple in theory but often very difficult in execution, mostly because society generally maintains its records in monetary rather than energy terms. Another problem is that the U.S. Government has not supported such studies in a consistent fashion and it is my perception that the quality of some energy records as are kept by e.g. the U.S. Departments of Energy and of Commerce appear to be deteriorating in recent years. Thus deriving the energy cost of getting energy (or most other things) is generally somewhat, and oftentimes exceedingly, difficult. A second problem is that the usual measure of the quantity of a fuel, its heat value, often does not give a full assessment of that fuel's ability to do economic or other work. Most simply electricity and thermal heat from e.g. coal or oil have a great difference in their ability to do work, such as we are willing to trade three or four heat units of coal or oil in a thermal plant for one thermal unit of higher quality electricity. Thus if the input and output fuels are of different quality then it is often thought desirable to weight in some way the inputs and the outputs. A third problem is that it is important to consider boundaries: how large should we draw the boundaries of the energy analysis for the inputs? We will consider these issues in far more detail in later publications but there are many reasons why it is important to make summaries of EROI available at this time even though many uncertainties exist in the numbers that we present here, and indeed with any numbers that might be possible to generate.via jforbess

Posted by ewilhelm 10 years ago

How to make carbon paper or carbon felt for use as an electrode in an MFC? Answered

 Hey, i was wondering if there was any cheap method of making carbon paper or carbon felt at home for use as electrodes. 

Asked by LiquidLightning 8 years ago

Carbonation and it's relationship with oxygen Answered

I have 2 random and somewhat contradicting questions: Can oxygen cause carbonation in liquid? Does oxygen decrease carbonation in liquids that are already carbonated? (soda) The more details, the better :)

Asked by tb24 3 years ago

SOme Uses for Sodium Carbonate? Answered

What are some uses for Sodium Carbonate?

Asked by dla888 8 years ago

Green Roofs Capture Carbon

"Recently, Royal Dutch Shell PLC received $865 million from the Canadian government for a carbon capture and storage (CCS) project. Green roofs, rooftops with plants, can capture and store carbon, according to a new study by Michigan State University in East Lansing. The technology to build green roofs already exists, and they can be created for much cheaper than a CCS project."The key to fighting global warming is capturing carbon from the atmosphere and storing it in new reservoirs that weren't storing carbon before," lead researcher Kristin Getter said...."This looked like a rather elegant answer to the Green Question.  

Posted by Goodhart 8 years ago

Carbon Fibre Rotor Blade

I wish to construct a pair of 70cm long carbon fibre rotor blade for my rc helicopter. The inner part of the blade is hollow to reduce weight. I understand that I need to make a two-piece mould out from a sample blade, with some kind of rasin. Any idea or suggestion is very much wellcome. Thanks to all for sharing.

Asked by choonsiong08 8 years ago

How do I make a carbon fibre pipe for an air intake?

Hello folks! I'm trying to figure out how I can make a carbon fibre pipe for my cars air intake. I have a semi-flexi alloy pipe which I have managed to bend into shape and it will keep its shape without changing even if I take it out of the engine bay. I was wondering how I would go about making a mould of the pipe to make a replica of it out of carbon fibre for ultra cool points. Plus Carbon fibre helps repel heat better than aluminium. I was originally just going to get a Carbon Fibre vinyl wrap around the pipe but, why fake it?

Posted by apmaman 6 years ago

A Carbon Tide: Past, Present and Future

The New York Times has a really nice graph showing the world's historical and projected carbon emissions here at A Carbon Tide: Past, Present and Future Global emissions of carbon dioxide, measured by the weight of carbon it contains.Their choice to display it in flash rather than a similarly-sized image is somewhat annoying, but the chart itself does a nice job presenting a type of data that is often difficult to comprehend. Getting people to truly grasp the size and scale of some of the world's energy issues is one of the key challenges in making progress on those issues. In 2004, 7.9 billion metric tons of carbon were released -- did you make good use of your metric ton?Here's a thought experiment in that same vein: The San Francisco oil spill was originally reported as a 140 gallon spill, but turned out to be approximately 58,000 gallons. How much worse is a 58,000 gallon spill compared to a 140 gallon spill?

Posted by ewilhelm 10 years ago

Sucking Carbon out of the air?

I read somewhere that lye can absorb carbon from the air, and that organizations are putting out HUGE tubs of lye to suck up carbon. I wonder if it works.

Posted by lawizeg 9 years ago

100% of Electricity from Renewable and Non-Carbon Sources in 10 Years

In the best talk of the 2008 Web 2.0 Summit Al Gore called for president-elect Obama to make a man-on-the-moon-like pledge to generate 100% of the United States' electricity from renewable and non-carbon sources within 10 years. Al Gore is truly an amazing orator, and when he got fired up about the climate, renewable energy, energy independence, and how it could play a centerpiece of our economy, I got fired up and so did the rest of the audience. What really sent shivers down my spine was this observation: When Neil Armstrong first stepped on the moon, the average age of the control engineers running the mission from Houston was 26, making them 18 when Kennedy made his pledge in 1960.Generating 100% of our electricity from renewables and non-carbon sources in 10 years (let's call it 100-in-10) is the same caliber of challenge, but unlike getting to the moon -- which was something only a government could do at the time -- building a full economy of renewable energy should be orchestrated by the government, but requires the efforts of countless makers. I seem huge numbers of opportunities, both large and small, to make a difference and have impact. Get an engineering degree and invent a new type of powerplant, design and publish plans for low-cost DIY solar home heaters, be an advocate of renewable products and services. It's clear that a lot can happen in 10 years, and even if Obama doesn't call for 100-in-10, the time to make a difference is now. This is cross-posted on Makezine here.

Posted by ewilhelm 9 years ago

Europe Turns Back to Coal, Raising Climate Fears

Europe, with its smart cars, good public transportation, and high density, is often a beacon of hope for environmentally-conscious Americans. However, since coal remains a relatively cheap source of energy (at least in the short-term...), many European countries are turning to it as oil and gas prices rise, and concerns about energy stability and independence grow stronger. Europe Turns Back to Coal, Raising Climate FearsOver the next five years, Italy will increase its reliance on coal to 33 percent from 14 percent. And Italy is not alone in its return to coal. Driven by rising demand, record high oil and natural gas prices, concerns over energy security and an aversion to nuclear energy, European countries are expected to put into operation about 50 coal-fired plants over the next five years, plants that will be in use for the next five decades. The fast-expanding developing economies of India and China, where coal remains a major fuel source for more than two billion people, have long been regarded as among the biggest challenges to reducing carbon emissions. But the return now to coal even in eco-conscious Europe is sowing real alarm among environmentalists who warn that it is setting the world on a disastrous trajectory that will make controlling global warming impossible.

Posted by ewilhelm 10 years ago

expanded graphite heat-sink? Answered

Okay , I've searched and searched and cannot find what I'm looking for. Maybe the other diy'ers can help me. 1.What I'm looking for is a heat-sink made of expanded graphite or (carbon, graphite (∥) as it might be known as well) that is actually in the shape of a traditional aluminum heat-sink with the fins and NOT in the shape of thin film as it is very commonly available. I don't even know if it exists or is manufactured by any company. I've tried contacting some companies about it but they have yet to get back to me. The reason I want this is for the tremendous increase in heat conductivity as in this chart shown on this webpage . The application I am trying to use it for needs a raised, elongated surface area to displace heat semi-uniformly, hence why I need fins like a traditional heat-sink instead of the commonly available film expanded graphite online. 2. If it does exist or is able to be manufactured, would it be a ridiculously priced part or would it be a reasonable priced part? (Just doing small scale tests for now so it would be the size of a FET finned sink). 3. From what I've read it seems possible by maybe layering the films into a stacked lattice, keeping heat transfer perpendicular to the lattice, but what are your thoughts all? (I question bonding the layers myself but I don't know if you could hard press the layers together without a bonding agent since any bonding agent being used I believe would reduce the thermal conductivity quite a bit, but I'm not incredibly familiar with expanded graphite). Any and all help would be appreciated from this wonderful community Best regards, Velesh

Asked by velesh 5 years ago

Kickstarter Space Engineer creates "real" Mithril

This is very, very cool. There's a Kickstarter project working on  space elevators, using carbon nanotube (CNT) technologies.  One of the supporters asked if they could buy enough CNT to make a pair of wedding rings, because they would outlast both gold and diamond. It turns out that, to be able to make a CNT wedding ring, you need the ability to build a space elevator. They found a compromise, though, and made a brand new material - they alloyed CNT with silver; A metallurgist with 25 years in the field has said that the new alloy has some “interesting” properties. There is a strange ‘crystallization’ to the metal once it cools. We don’t really know why; or what this means. It needs study. There is other ‘stuff’ about this alloy which lead in some exciting directions, but as yet, we have not explored those. In essence we’ve created a unique silver+carbon nanotube alloy. We would like to brand this material “Mithril” after J.R.R. Tolkien’s super-material in the Lord of the Rings… so far, the foundation’s branding people have not returned our calls. (According to their website, it’s an 8 week process.) For a long time during the design and creation of the rings, their existence was a secret.  Now, though, the groom has given these reasons for buying a pair of Mithril rings; Reason #1 - Use this line when you propose, "Many men promise their brides-to-be the stars. It's a very rare man that actually delivers." At which point you can explain the ring, and the potential bride is thusly wowed. Reason #2 - It REALLY shows that you're planning on a better world for your children - aka, you're awesome husband material. Reason #3 - Awesome conversation piece. Reason #4 - Someone shows off their gold ring, and you can say, "How quaint." Reason #5 - The working name for the metal is awesome. I won't say more without Michael's permission. But let's just say, the name is very... enchanting. When the people who see you hear what metal your ring is made of, they'll do a double-take and then demand more information. Reason #6 - There are very interesting properties to these rings that are fun to show off. Again, not going to go into detail without Michael's go ahead. Reason #7 - It's one thing to give a wedding ring to your loved one. It's a completely different thing to give a wedding ring to your loved one that's a piece of history. Reason #8 - Gold wears away easily, these rings may be able to be passed onto your great great grandkids. The full story is on the Liftport site,

Posted by Kiteman 5 years ago

carbon fiber felt, carbon fiber matting

Seeking a source for remnants carbon fiber felt, will use as combination wind screen chimney internal liner to prevent loss of heat to the environment can use piece sized 4 x 24 inches-minimum. thickness 5 mm, 7mm or better if possible. carbon fiber is usually sold by the sq. yd./meter- i know that carbon fiber felt exists but can't seem to locate same, free or cheap is best, thats why i'm looking for remnant material. thanking you for your help big al

Posted by big al 1048 8 years ago

How do I connect a twisted copper lead to a carbon brush motor? Can it be soldered? Answered

The tiny wire connected to the carbon brush on my palm sander broke off right at the carbon brush. Is this solder-able? The 3/8" bit of wire is connected to a blade connector on one end and used to be connected to a small depression on the side of the brush. Thanks for any advice.

Asked by aeray 8 years ago

Can you impregnante activated carbon into an air filter yourself?

Hi, I have a cabin air filter in my car.  Toyota sells activated carbon filters that helps absorb odours, but not for my  model car. i was wondering if its possible to impregnate the filter with activated carbon / activated charcoal myself somehow? thanks for any ideas!

Posted by hoobyjuice 6 years ago

What is the lag time when you use Carbon Dioxide air tanks for paintball? Answered

I need to know the time it takes for C02 to regain pressure firing.

Asked by Paintballer98 7 years ago

Carbon Fiber over Fiberglass for fabric

When making a composite anything, what is the advantage of having carbon fiber instead of normal fiberglass? I was wondering because at US composites, the carbon fiber is almost 9 times more expensive that the fiberglass.

Posted by Ferrite 10 years ago

Electrolysis? Answered

I have been messing with electrochemistry lately, and had saturated some water with NaCl (table salt). I then placed two carbon electrodes into the solution and ran a current through it. To my surprise, the carbon dissolved and a dark brown powder formed in the solution, with gas bubbles rising from both electrodes until they were gone. Anybody know what is happening??

Asked by pyrorower 8 years ago

How can I identify what kind of resistors I have? Answered

Recently I have been trying to identify and categorise all my scavenged electronic components. I know how to identify the values and tolerances of the resistors by using the colour bands, but some of the resistors have different 'body' colours. I know the standard beige/brown ones are carbon film and metal film resistors are often blue. But I have some other colours, which I would guess are also metal film-but I don't know, they are all shown and labelled in the picture. Let me know if you think you know what they all are. From left to right: 1st is a standard carbon film 2nd I'm sure is a metal film resistor 3rd: ??its a slightly greeny aqua colour 4,5,6,7th:??? these are a torqoise green type colour 8th: ??? this is lime green

Asked by mdog93 5 years ago

I'm going "hike camping" for the first time soon.

At summit lake near Coplay lake and Surprise lake in Pierce County. Its about 2.3 miles from where we're parking the suburban.

Posted by Yerboogieman 8 years ago

Can I get a 20 pound CO2 cylinder filled with Helium? Answered

I recently got a 20 pound CO2 cylinder and was wondering if I would be able to get it filled with helium gas.

Asked by workinprogress37 7 years ago

I'm trying to read ACS publications, what institution should I include?

What institution should I include for my library recommendation? Is it alright to put my old college?

Asked by Vorenus 7 years ago

hi there. i want a gun can fire gas like Co2 fog which used to shoot on people for fun.

Just LIke those guests blew by on some TV shows. It dosnt have to be portable,not have to be CO2. can somebody offer me a solution. Thank you.

Asked by zeebiz 8 years ago

How to carbonate drinks at home?

I want to carbonate drinks but i don't know how and i am not buying a expensive equipment or anything like that so don't send me links where to buy them Thanks!

Asked by trojanx 9 years ago

carbon fiber felt ! ! ! --- looking for remnant lenght/width(s) of carbon fiber felt ,

Seaking to use carbon fiber felt to blanket/insulate against process heat loss to enviroment. can work with single pieces as small as 3 inches by 12 inches, aprox. thickness 3/8ths inch --HOPEING FOR cheap!

Asked by big al 1048 8 years ago

Are Co2 (Carbon Dioxide) air systems refillable? Answered

The kind of Tank Im talking about is a Paintball air system. Are they refillable?

Asked by Paintballer98 7 years ago

how can i make carbon-look accessories for my motorbike?

How can I make carbon-look accessories for my YAMAHA TDM 900?

Asked by 8 years ago

How could I make a carbon fiber table with a foam core?

I'm looking to see if it's possible to make a carbon fiber poker table using foam as a core to keep the weight down. I have instructions on how to make a poker table so I'm curious to know steps to do a wet layup of carbon fiber to create the table.

Asked by zacreth 7 years ago

Is it possible to electroplate carbon fiber? Answered

Hi, I'm into knifemaking. There are some carbon fiber knives on the market, but they all have very poor edge retention. (because the edge is made of carbon fiber as well) I was wondering if it would be possible to add a thick metal coating of a hard metal to a carbon structural center, as to coat the blade in a thin layer of metal. This metal would then be serving as the cutting edge, hopefully with better edge retention.  Is this at all possible? What types of metal could be used? Thanks in advance!

Asked by jelte1234 2 years ago

Are carbon neutral fuels good for the environment? Answered

I'm sort of confused about carbon neutrality and it's impact on our environment. I feel like I'm over thinking it, but could someone explain to me what exactly makes a carbon neutral fuel clean? If it's clean burning at all? I'm interested in making biofuels specifically algae fuel, and this is a term that keeps popping up.

Asked by thecoonskin 6 years ago

how can i make copper carbonate? Answered

Hello , am trying to get a hold of some copper carbonate but its much too expensive. now i have some raw, and untarnished (beyond normal anyways) copper laying around and want to know if theres any way i can convert this into pure copper carbonate, with minimal impurities such as copper oxides and such. is there a way to do this through electrolysis perhaps? also, is there a way to convert copper and copper oxide to copper hydroxide which i can simply add carbonic acid to to copper carbonate? also whoever answers my question will get a best anser form me , guaranteed

Asked by oldmanbeefjerky 7 years ago

For drivers who leave their SUVs idling -- can we make a remote control that will shut off their engines ?

Some drivers leave their cars idling.. many times unattended.  They are getting lousy gas mileage and adding carbon needlessly to the environment. Can we deliver some kind of kinetic energy to the vehicle that will cause the engine to shut off without endangering anyone? I'm thinking this would be a remote control device... Just point and click.... and the engine stops running until the driver shows up and starts the car again.

Asked by steve_newguy 7 years ago