Advantages: Cheap, shifts well, excellent joining link Disadvantages: Can suffer chain breakages
-snap-snap
Derailleur systems have over the years added more and more gears to the clusters. A few years ago 8 speed was cutting edge. Now 9speed is standard for mountain bikes, and road bikes have hit 11 speed. Initially extra gears were accommodated simply by adding more cogs to the cluster. Making the wheels wider and dishing them more squeezed on another gear. 9speed and above needed thinner cogs, and ever narrower chains.
If you read the reviews on 8 speed chains, there are virtually no complaints about chains snapping. Read the reviews for 9speed chains used on mountain bikes and you get problems with chains snapping. They typically break under low pedalling pressure, and after the chain has been in use for a few months. I have not read a satisfactory explanation as to how a chain could snap like that. You can not break a chain simply by ...
Advantages: better control of the ball and better power on the ball Disadvantages: the cost
everytime you go into the sports shops you always see a poster of beckham or rooney modelling a new pair of football boots, but why?
so many pairs of new football boots are coming out because people believe that they all help their performance, well some of them do but not a lot.
it is mainly in your mind that when you have a new pair of £140 boots on your foot that your a real star and you do play better, they might provide more comfort and a bit more performance but are they really worth the money?
wouldnt you be better of spending £40 on a pair rather than spending £140 on the new nike mercurial r9 sg?
the nike mercurial have a great design and are the newest boots on the market.
they have added curves and grooves that are designed to help tthe delivery of the ball.
you decide.
thanks for all your comments ...
Advantages: durable, light, comfy and waterproof Disadvantages: bit expensive
't waterproof for very long. Well, with the Nikes, I do not see any sign of the toe wearing down, and are waterproof to this day but I do use dubbin on them to help it along a little.
I think I have found the boots I wouldn't mind buying over and over again when they finally wear out or I grow out of, instead of experimenting with new ones and being let down after a while. These have to be good as the Nike Mercurial R9 means thet Ronaldo has these boots. ...
Product Information for "SRAM R9 9 Speed Cassette" »
Product details
Long Name
R9 9 Speed Cassette
Type
Bike Cassette
Genre
9 Speed
Manufacturer
SRAM
Manufacturer's product description
SRAM R9 9 Speed Cassette 12-26 Features: SRAM\'s R9 Cassette is a 9-speed, Shimano compatible road cassette with a 12-23 or 12-26 tooth option. Featuring SRAM\'s Powerglide II™ technology, the R9 Cassette boasts a simple design, durable construction, and optimized performance. Its simple design delivers a lightweight, efficient and stiff component, while its durable construction features high quality steel cogs and translucent composite spacer. The steel cogs of the R9 Cassette have been heat treated, ensuring a longer life span. The R9 Cassette also features a durable lock ring, which is made up of 70-75 alloy.
