FORUM SEPEDA

Elisworth

2009-07-23T19:01:00.000+07:00

This is new mountain bike frame of the year....made from alumunium. It's so light, so the accelerate can be more responsife when we use it to play downhill. It's a strong frame.

velg

2009-07-21T14:44:00.002+07:00

velg is the home of tire. It have big function when we drive. All most of velg made from alumunium. So it can be so light when the whell rotate. The design of the velg should be the most important beside we design the frame.

Bike Accident

2009-07-20T15:58:00.000+07:00

How if you feel if you get the accident like this. Wood can make hole on your foot. It's so hurt. You must get medical operation to take out the wood. It's happen on 100 km/hour with racebike. But you can see, he smile to us. ha ha ha ha,,,,he is so funny, in his hurt he still can smile to us.

Helmet

2009-07-02T21:37:00.001+07:00

Helmet is the first thing we need when we use bike.It can safe our head from accident.Eventhough we have an insurance, we must keep our health, and helmet is needed.Do you know how the best to use helmet??? don't wanton whee used it.it can safe your life.Please check the snap till u hear "click".here the explain.

especially if you like to play downhill,not only usual helmet we used, but a helmet like motocross style.It is different condition.

Wood bike

2009-06-30T11:01:00.001+07:00

When most people think of bicycle frames, they have in mind materials running the gamut of aluminum, chrome-moly steel and carbon fiber. Not so a timber technology student in Germany. For his two-wheeled creation, he turned to the beech tree.

More specifically, Jens Eichler got himself some sheets of beech plywood, along with a strong glue (phenol-resorcinol) and some power tools. After a few months of playing with the concept, he set to work in August 2006 on what would become a tandem bicycle he calls "Renovatia."

MTB

2009-06-17T20:48:00.000+07:00

A mountain bike or mountain bicycle (abbreviated MTB or ATB (all terrain bicycle)) is a bicycle designed for off-road cycling, including jumps, and traversing of rocks and washouts, and steep declines, either on dirt trails, logging roads, or other unpaved environments. Bicycles typically used for mountain biking need to be able to withstand off-road use and the surmounting of obstacles such as logs and rocks. Most mountain bikes use 26 inches (660 mm) bicycle wheels with wide, knobby tires for extra traction and shock absorption. In the current century, front wheel suspension has become the norm and full front and rear suspension has become increasingly common. Some mountain bikes are also fitted with bar ends on the handlebars to give extra leverage for hill-climbing.

Since the development of the sportin the 1970s, many new subtypes of mountain biking have developed, such as cross-country (XC) biking, all-day endurance biking, Freeride-biking, downhill mountain biking, and a variety of track and slalom competitions. Each of these place different demands on the bike requiring different designs to suit them. MTB development has included an increase in gearing, up to 27 speeds, to facilitate climbing and rapid descents. Other developments have included disc instead of cantilever or V-brakes.

bike race

2009-06-13T17:47:00.000+07:00

Best wishes to David Canada

David Cañada in yellow,
originally uploaded bywaxiii

Pro racers spend tens of hours a week beating the streets,and a common occupational hazard is skin cancer. David Cañada, 33 and currently signed with Fuji-Servetto, has discovered that a tumor removed in 2007 metastasized to lymph nodes in his armpit.

"I'm feeling quite encouraged and I'm really eager to return to professional cycling, if possible," said Cañada. "I'd rather not say goodbye to pro cycling this way, but it's obvious that my primary aim right now is to achieve a full recovery. I've already endured the hardest part of the treatment and I'm feeling really good physically."

bamboobike's frame

2009-06-10T12:56:00.000+07:00

Bamboo bicycles
I first ran across a bamboo frame by Brano Meres, an engineer and industrial designer based in Bratislava, Slovakia. You can see quite clearly how the bamboo is used as tubing. He’s gone even further, apparently, and more recently created a frame from woven bamboo. This frame’s construction is similar in concept to carbon fiber, except it uses bamboo fibers.

Another manufacturer is Calfee Design, which goes so far as to even integrate hemp in the lugs (the bits that hold the tubes together). Again, some very nice, high-end bikes which gain vibration dampening from the inherent material characteristics of the bamboo.
And I was surprised to find an extreme example of a bicycle made from bamboo that’s being promoted as a sustainable transportation method in parts of Africa. (Craig Calfee also made a trip to Ghana in February.) Not as aesthetically refined, but at the end of the day you just want something to get you from point A to point B.
So this is the other extreme of bamboo, that of a critical functional role that also happens to produce some very nice aesthetics.
In recognizing these functional elements of bamboo, I can’t help but wish that manufacturers like Asus would take advantage of the material in ways which move beyond simply using it as a disposable covering. I’m not proposing to make semiconductors out of bamboo, but I do wonder what might happen were bamboo (or some other material) to truly permeate throughout our electronics. Could your iPhone give you splinters? Would our monitors swell and shrink based on the seasons? Would our laptops develop a warm patina from frequent use?

New Frame from Superstar Components Xtension

2009-06-08T20:55:00.000+07:00

my dream frame Description:

Xtension Bikes manufacture frames for alot of the big brands, this is their in house brand, and we have agreed with them to launch their high quality framesets in the Uk at these crazy prices. CNC machining galore, the sheer quality of the frames shines through in the flesh.

Xgorge is Xtensions hardcore freeride machine, designed to annialate descents, while being nimble and fully active. Massive CNC sections keep this frame clean yet strong, with huge strengthening struts to keep the rear linkages stiff as hell. 8" of plush Horst link suspension with massive CNC rocker plates, flex is alien to this frame. 83mm shell and 150mm hub spacing completes this Freeride monster!

High spec Fox DHX4 coil shock is adjustable to customise your ride.

Xgorge

Fox DHX4 Coil shock 8" Travel

Xgorge Specifications

Material 7005 Aluminium Alloy

Wheel Travel 8"

Frame Size S [16.5"], M [18.5"], L [20.5"]

TT Length S [565mm], M [590mm], L [615mm]

Seatpost Diameter 31.6mm

Derailleur Clamp 34.9mm Top PULL

Headset 1-1/8 " Standard

System 4 bar Horst style link

Colors Anti Radar Black

Notes 150mm thru axle, 83mm Shell

Bamboo bike

2009-06-06T18:16:00.000+07:00

How to Build a Bamboo Bicycle

I saw a picture of a bamboo bike and decided I had to have one. I found out that professionally built bamboo frames cost a few thousand dollars so I decided to build one myself.

I had a lot of fun and I hope that you can make one too by following these instructions.

The bike I made is a track bike for commuting to work. The bicycle was inspired by Craig Calfee who makes much nicer bamboo bikes. I really wanted something with a minimum of fancy technology and carbon fiber (although I sprang for the carbon fork). I used epoxy and hemp fibers on all the joints (no pun intended). The track bike also makes it easy in that it is a very simple bike - no gears, cable routings, rear brake or derailers.

Disclaimer: Death or serious injury can result from a bicycle frame failure. Using new and untested techniques is risky. Be smart.
The basic steps:
1. Figure out what type of bicycle you want
2. Get all of the parts and bamboo
3. Heat treat the bamboo
4. Tack it all together
6. Epoxy it all together
7. Build up bike
8. Ride off into sunset

Humber

2009-06-05T14:35:00.000+07:00

Antique bikes both charming and 'green'

Cycling is an exciting pastime, and now it is becoming widely popular among people of all ages in this country.

Various types, models and shapes of bikes are also cropping up, like racing and mountain bikes as well as BMX models for children and teenagers.

Today's diversity of bikes are inspired by the presence of their predecessors. The Simplex Machine Company was one of the pioneers, and it is now one of the world's oldest bicycle makers.

Simplex bicycles were first produced in 1887 in Utrecht, the Netherlands. Some of the other popular makers were Gazelle, Juncher and Britain's Raleigh, Hercules and Rud. There were also Japanese, Chinese and American cycle makers.

Meanwhile, antique bike hobbyists are emerging in major cities in Indonesia, particularly Jakarta, Bandung and Yogyakarta, where bike enthusiast clubs can be found. Members of old bike clubs are mostly elderly citizens, who gather in the morning to go out cycling as a social activity.

In Jakarta, for instance, rare bike club members meet for discussions in the National Monument (Monas) square on Sunday mornings before going out for a ride.

One of them is Misman, 65, a retiree from the Ministry of Religious Affairs. He is part of the Jakarta Antique Bike Club, and the proud owner of a 1957 Humber -- made in England. ""I ride this to see fellow old bike buffs in Monas and do some sightseeing of the city in a convoy,"" said Misman, who lives in Pisangan Timur, East Jakarta.

Sugito, eight years younger than Misman, also takes part in the morning outings when he has time. According to the retiree, he and his family are all antique bike enthusiasts. Though he now has only a single 1955 Humber, since childhood he has had a wide variety of bikes.

""First I bought a Phoenix from the People's Republic of China in 1962; then I rode British Philip for a change, and later a Japanese bike,"" he said. Bicycles have long been part of his life. ""I went to school, helped my parents in the fields and later worked in Jakarta, and got to all those places by bicycle. Now I'm retired and I'm still riding it around,"" he added.

Durable and unique

People love old bikes for different reasons. Earlier products are frequently hunted by collectors of antiques, with older ones being sold quite at quite high prices.

They will be valued even higher if they are well maintained and have complete genuine parts and accessories, like saddles and cushions, front and rear lights, gear cases and other parts.

Products from Europe, including Holland, Britain and Germany, are known for their strength and durability. Each of their trademark holders at that time offered unique features or typical characteristics.

A Humber of the 1950s, for example, was equipped with a gear shift. ""It has three gears, so we can race with them,"" assured Misman.

Bicycle accessories no longer found today are a hand pump, less than half-a-meter long and stuck to the body frame, and a small generator fixed near the front tire with a rotor to make the front light turn on.

A German-made Bosch RL/WQ2 attached to the 1955 Humber is capable of producing six volts. ""The light stays on and the generator, provided by the bike factory, is in good condition. The light stays on even when it rains,"" Sugito, the resident of Cempaka Baru, says proudly of his bike.

A Gazelle saddle made of thick, brown leather, and a classic gear case remain intact on Misman's 1957 Humber. ""They can't be replaced if damaged or lost. The manufacturers or shops are no longer there: Where could we find them?"" queried Misman.

Often, he added, fellow antique bike collectors are sought for help. ""But if the frame, brake or rim is damaged, we can take it to a bicycle or lathe workshop for repair to make it functional,"" he said.

Though ridiculed by some as fans of ill-suited bicycles, the 50 or so members of Jakarta's antique bike club from the city, as well as from Bekasi, Depok and Tangerang, carry on their activities.

Besides pedaling around the capital, they also tour Bogor, Puncak, Sukabumi and Banten, not only as a weekend program but also in an attempt to preserve the practice as part of an old Indonesian tradition.

In addition, they wish to make the public aware that cycling is an interesting hobby, which will increase communication and brotherhood.

Furthermore, amid the energy crisis and fuel scarcity, the operation of bicycles greatly supports the government's energy-saving program.

By pedaling, air pollution caused by motor vehicle emissions can also be reduced, while good health is maintained and the environment preserved.

crazy old bike

2009-06-01T21:12:00.000+07:00

That so crazy ,,,!!!!! bike prices reached above 25 million rupiahs.said collectors that I met there were also bicycle the price reaches 40 millions rupiahs.OOh my GOD,,,, but what the meaning all that prices compared with the driving comfort bike has old.Beside the value also has the luxury of a solitary pride for the owner.That bike full original , Until bullyes ... ohhhh grandpa,who selling the bike so expensive.But i proud with u with u grandpa,,,u can keep the bike until this year ,,, which also makes the selling price is high price