Shimano 6600 Ultegra 10 Speed Rear Wheel Features: Ultegra wheels offer proven technology based on the Dura-Ace WH-7801 wheels Built with 20 stainless steel bladed spokes The... more
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Shimano 6600 Ultegra 10 Speed Rear Wheel Features: Ultegra wheels offer proven technology based on the Dura-Ace WH-7801 wheels Built with 20 stainless steel bladed spokes The rear wheel uses a special wide flange hub design and an asymmetrical rim that results in additional stiffness and stability Labyrinth and contact sealing - low-friction seals effectively shut out water, mud and dirt without affecting rotational smoothness The Hub uses angular contact bearings designed to cradle the balls giving both radial and lateral support for superior strength and durability in real world riding conditions. They also offer precision bearing adjustment and easy maintenance Super polished ball races for high precision, durability, and smooth rotation Aluminium oversized lightweight Freehub body for increased contact with Shimano 10 speed cassettes 700C Clincher rim only Weight: 943 grams
Advantages: Top of the range "bling" rear mech Disadvantages: 9 speed "only", superceeded by RD-7800 10-speed version
...I bought this rear derailleur to replace an Ultegra mech when upgrading my bike from 8 to 9-speeds (well, 16 to 18 speed really with my double front chainset). Apparently, this mech is also compatible with 8-speed systems, you just need to change the cable mounting position.
Dura Ace is the name of Shimano's top of the range group of bicycle components, or "groupset", for road race bikes, and the 9-speed 7700-series was introduced to the public in 1997 after Shimano sponsored riders using Dura-Ace 7700 series equipped bikes in 1996. Year by year, it's been enhanced, and this review is of rear mech from the 2004 model year.
For the non-bike-ophiles among you, the rear mech (or mechanism) is the device at the back end of the bike that moves the chain across the muliple cogs (cassette) on the back wheel to change gear - bigger cog...
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Advantages: fast, light, high spec for cheap price Disadvantages: None
...:
1)Gearing (putting a higher spec on there such as Shimano 105 or ultegra)
2)Wheels (putting on lighter, and hence faster, wheels)
3)Tyres (putting on narrower, and hence faster, tyres)
There are many other 'cosmetic' changes including changing the stem, changing the saddle, changing the bars etc. etc.
The cost of upgrading varies greatly and depends what is changed. For example changing the gearing to Ultegra involves changing gear shifters/chain rings/front mech/rear mech/chain/cassette and is likely to cost around £400 (I didn't pay much more for the whole bike!).
Rather than changing the wheels (which isn't that expensive and can be transferred to other bikes) and the tyres (these will need to be changed at some point anyway) I can't see the point in any other upgrades since I am a recreational cyclist only. I, and probably...
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The most striking thing about this system is its incredibly debonair design which adapts to most styes of decor. The main DVD console is finished in tasty piano black with silver around the edge and a row of tiny illuminated buttons on the front. Hit the more
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