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Normal Rear Derailleur
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Remember the glee of peddling your tricycle? When the pedals were moving, so were your legs. That is the way it is with a fixed gear bicycle or fixie. If the bike is moving, so are your legs. A fixie can be enjoyable to ride and give you a decent workout at the same time. The beauty of a fixie is in its simplicity.
Building a fixie from a former road bike is pretty simple. If you have the time or patience, look for a road bike from the 80s or 90s. Most of the time these can be picked up relatively inexpensively. A handy feature on an older road bikes is road dropouts that are not of the vertical type. This allows the wheel to be moved back and forth in the dropouts to adjust the chain tension of the fixed gear.
Once you have acquired a road bike, it is time to start the task of removing unnecessary parts. Remove the chain, all derailleurs, shifters, and rear brake. This will also necessitate the removal of the rear brake lever from the handlebars. Of course you can also change the handlebars to a bullhorn style or straight style. I have seen a lot of mods where the drop bars are turned upside down and cut in length to the desired look.
Hopefully you have removable chainrings on the crankset. You will only need one and typically use the smallest. Most often the small chainring is placed on the outside position.
An important step is to determine the gear ratio to use on your fixie. Count the teeth on the remaining chainring and find a gear ratio website to figure out how many teeth the rear cog should be for the desired gear ratio. Something in the low to mid sixties would give you plenty of gear for puttering around. If you want to keep up with the urban traffic, something in the low 80s should be sufficient. As you become a more proficient at riding your fixie, you will become more adept at pedaling with a high cadence. Typical road bike chain is 3/32 pitch. Normal track bike chain is 1/8. To keep costs low, a 3/32 cog is the best way to go because the front chainring and existing road chain will be 3/32 (just needs to be shortened).
Chain alignment is critical. The transition from the rear cog to the front chainring should be a straight shot. Chances are the original road bike wheel has a built-in gear assembly. In this case you will need to acquire a different wheel. It can be a road bike wheel with a threaded hub or a special track setup. If the rear wheel is a standard road wheel, you may need to add spacers to the hub before applying the cog to achieve the proper chain alignment.
Once you have the chain alignment figured out you can determine the chain length. Use a chain tool to achieve the correct length and adjust the tension. You want a little bit of slack in the chain when the wheel is located properly in the dropouts.
Okay. We've removed the rear brake. We have removed the shifters and derailleurs. We have removed one of the chain rings from the crankset. And we have found the proper rear wheel and cog. We have a shortened the chain and adjusted the tension. Now it is time to enjoy your fixie!
Tom Bartlett http://www.fixiefixins.com Great resource for Fixed Gear Bicycles (Fixies)
Tips On Purchasing A Mountain Bike
It can be a bit frustrating as well as time consuming when you buy a mountain bike. Below, you'll find some tips and things to be aware of before you lay down the cash and buy a mountain bike.
Determining your price
There is really no limit as to how much money you can spend on a new mountain bike. To help you keep your spending under control, you should figure out what your price range is and how much your willing to pay for a new bike. When you buy, you shouldn't buy from mass merchant stores such as Wal-Mart. You should instead support your local bike shop and get a much better bike and much better service.
Finding your style
All mountain bikes are designed with several different riding styles and terrain types in mind. You'll need to figure out what type of riding you will be doing the most. Smooth riding, cross country racing, mountain cruising, or lift accessed downhill is something you need to figure out. Make sure that the bike you select fits your personal style and not that of the sale's staff.
Full suspension or hard tail
If you can afford it, a full suspension mountain bike is always worth the purchase. A hard tail, without rear suspension, is much lighter weight and pedal more efficiently, although full suspensions offer more comfort and overall better control. You'll want to make that decision based on your price range, riding style, and the type of terrain you'll be riding on the most.
Finding your favorites
Comparing mountain bikes component to component is nearly impossible, as there are far too many combinations available. The best way to go about doing this is finding a few components that are the most important to you and making sure the rest or the minimums fall within your price range. You can start with the fork then look at the wheels and rear derailleur.
Sales and seasons
During the year, the prices of mountain bikes can fluctuate quite a bit. Spring through summer is the main buying season. If you can wait until the right price pops up, normally in the fall and winter, you can save a couple hundred dollars. Many bike shops will also offer discounts or other accessories if you buy from them.
Finding a good dealer
Finding a good bike dealer is more important than finding the best price. You should always find a dealer that cares more about selling you a great bike than selling you a high priced one. A great dealer will have a clean repair shop and give you the impression that you can really trust them.
Test ride
You should test ride as many bikes as you can within your price range and riding style. You'll find that some bikes will feel right, while others won't. The more bikes you can test drive, you better you'll understand what works and what doesn't.
Doing the research
Product reviews and bike reviews are some of the best ways to find out about a mountain bikes reliability and overall performance. You should always look at what other owners and reviews think about a bike before you make that final purchase.
About the Author
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Question shifting rear derailleur (Shimano 105)..?
For the rear derailleur shifter, if I press it so that it clicks twice, the chain will move up two cogs. Is this normal? BTW I have the Shimano 105 groupset
Yes that is normal
Blogs Last updated: September 20, 10:57
In the absence of Shimano's eventual release of an off-road version of its electronic transmission system, several companies and retailers have taken it upon themselves to create their own modifications – and most of the ones we've seen over the past few months have been very clever, if not downright brilliant.
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