How to adjust the gears on your bike

Problem: Gears won't shift up or down perfectly with one click

Solution: This is most commonly caused by stretched gear cables and you will need to re-index your gears. The second video in this article explains how.

Problem: Gears are well indexed but the chain keeps dropping off of either end of the cassette or chainrings

Solution: This is most commonly caused by poorly set up derailleur limits and these will require adjusting. See the third video for an explanation on how.

Problem: My rear gears are properly indexed, but the chain shifts too far in one direction

Solution: If the chain won't run to the bottom of the cassette and shifts over the big cog into the spokes (or vice-versa), it sounds like a bent rear hanger needs straightening or replacing. If you've been in a crash or damaged the bike somehow, this is the likely cause. The final video below explains how to do this.

Problem: Down-shifting is fine but upshifting is sticky or slow

Solution: When were your cables last replaced? Dirty cables and housing can cause slow or inaccurate shifting. 

Problem: Chain slipping, jumping and generally misbehaving

Solution: Inspect your cassette, chain and chainrings for wear. Can you see a pointy shark-fin-like profile on your cog teeth or chainrings? We're sorry to say, but that sounds like you may need to replace your chain, cassette and chainrings.

Indexing your gears

If the gears on your bike are properly indexed, each click of the shifter will cause a single shift up or down the gears, front or rear. If you find you’re skipping a gear or that your shifting is getting stuck, then there’s a good chance you need to adjust your indexing.

Indexing problems can be caused by cable stretch, which is a normal part of the bedding-in process for new bikes or cables.

Check that a bent or damaged rear derailleur isn't to blame first. If it's all good, here's how to index or re-index your gears.

Biyclce factory :www.oceanbicycle.com

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Bicycle frame rear triangle operate instruction

If your frame or fork is made of steel, you can change the spacing to accommodate different hub spacing. This is most commonly done to widen the spacing, to permit the use of a cluster with more sprockets than the frame was built for.

Note, if you're not careful, you can do serious damage to your frame or fork this way!

If your frame or fork is made of aluminum or carbon fiber, do not attempt to re-space it: these materials are not suitable for "cold setting."

If in doubt, try the magnet test: if a magnet won't stick to it, don't try to re-space it!

 From:http://www.sheldonbrown.com/frame-spacing.html

How to choose bicycle for kids?

Here are some data for your reference.  

Age of your kids

2--5 years (85mm--110mm):  10"--12" wheelsize kids' bike

6-8 years(110--130mm)   : 14"--16" wheelsize kids' bike

9--12 years(130--150mm): 20"  wheelsize bikes

12--14 years(150mm--165mm): 24" bikes  

Hot sale bicycle for children:

Brand	Newtimes , Ocean,Ganna
Model	TY-16-014
Type	Kids' Bike
Training Wheels	Yes
Wheel Size	16"
Frame Material	Steel
Fork Material	Steel
Rim Material	Aluminum Alloy

HOW TO CHOOSE BIKES DEPENDS ON HEIGHT?

Some of us might be confused while choosing bikes.
There are many factors we need to consider such as price and hight and so on....
There is also a factor we can not ignore---our weight.
Here is a chart for your reference.

bike frame height	rider body height
15.5〞/16〞	155cm-170cm
17〞/18〞	170cm-180cm
19〞/19.5〞	180cm-190cm
21〞/21.5〞	190cm and over

Ocean HIGH QUALITY DIY FIXED GEAR BICYCLES SPORT BIKES FOR TRANSPORTATION

Brand：	Newtimes , Ocean,Ganna
Model：	OC-F700C132
Type：	fixed gear bicycle
Wheel Size：	700C
Frame Material：	Aluminum
Fork Material：	Steel
Rim Material：	Aluminum
Net Weight：	14
color fixed gear：	gold, pink,blue,green
Gloss Weight：	16

Why we should cycle instead of driving

1. Live Healthier, Live Longer
For those looking to shed a few inches, ramping up your cardio by biking to work is a great place to start. Biking to work for a year can help the average person lose 13 pounds. Doing aerobic exercise accelerates your breathing and heart rate, which helps to stimulate the contraction of intestinal muscles and keep you on a path to wellness.

Other health benefits can include lower blood pressure, boosts of energy, muscle building, and improved coordination. Riding a bike for three hours a week can already cut your risk of heart disease by 50 percent.

2. Save Money and Time
It’s a no-brainer that biking to work is much cheaper than fueling up your vehicle and driving every day. It costs about $400 a year to keep a bike in shape, while it takes thousands of dollars to own and maintenance a vehicle. If your commute involves tolls and daily parking fees, you’ll be putting away even more dollars when you put away the car.

The time saving benefits will put a smile on every big city driver’s face. These days it feels like we spend more time sitting in traffic than we’d like to, but cycling skips the whole thing. If you don’t already drive because you live walking distance from work, a bike ride is still about three times faster than walking.

3. The Environment Will Thank You
Bikes have long been a poster child for green transportation because it substantially helps clear our air. A solo driver in an average vehicle releases about 1.2 pounds of C02 per mile, while the average cyclist releases only 0.7 grams through respiration. Cycling significantly reduces transportation emissions while also reducing traffic congestion and the need for harmful fuels.

Bonus: it takes only about five percent of the materials and energy used to make a car to manufacture a bike, and cycling produces zero pollution.

4. Happiness Production
Aside from feeling better from the fitness-friendly benefits of cycling to work, spending more time outdoors is guaranteed to cheer you up. The release of endorphins and vitamins from the sun are working together to boost your levels of feel-good hormones and make you happier. Soon enough, you’ll find yourself wishing your commute were longer.

Exercise can improve your mood, while sitting in rush hour traffic does the exact opposite. By commuting on your bike, you’ll be happier when you step into the office and when you get back home. Biking helps you to create that simple feeling of exhilaration as you zoom through your neighborhood knowing you’re helping yourself and those around you.

Since its inception, Strava has helped cyclists and runners track their activities and engage with other athletes in a fun, motivational way. Each week 150,000 new athletes around the world sign up to Strava, and last year Strava athletes uploaded an average of 5.3 activities every second. StravaMetro anonymizes and aggregates the millions of human-powered commutes uploaded to Strava every week, and then partners with urban planners and departments of transportation to improve city infrastructure for cyclists and pedestrians.

Cyclicts can participate in Global Bike to Work Day by uploading and tagging their commutes on Strava, and use the hashtag #CommutesCount on their social media channels to show global support for better cycling and pedestrian infrastructure.

Every pedal has the potential to make cycling better in communities all over the world. Whether you ride one mile or 50, if you bike to work on May 10th you can be a part of a global movement to make cities better for cyclists.

FROM:http://www.huffingtonpost.com/lissette-calveiro/global-bike-to-work-day-4_b_9870364.html