105 (groupset)
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105 (also formerly 105 Golden Arrow) is the name of a road bike groupset by Shimano. The group was introduced in 1983 and is till today considered as an beginner groupset for sporty racing cyclists. It ranked below the Ultegra or 600 groupset and above more favorable groups such as Sora and Tiagra. The group was introduced in 1983 as 105, from 1989 it was called 105 SC and since 1999 105 again.
Today's standard of the groupset is the 11-speed gearshift and Hollowtech II bottom bracket or cranks (7000 series) (by 2019).
History[edit]
The Shimano 105 road bike group came in a first version in 1980 on the market. The first series was built as the Golden Arrow 105. The number 105 was just an addition to the embossed on the parts, striking gold arrow. Greater attention was paid to the group in 1986, when it was presented along with the newly developed Shimano shifting technologies Shimano Indexed Shifting (SIS) and Shimano Linear Response (SLR) braking technology. It was introduced as a cheaper alternative to the 600-series and was based on the existing entry-level group Exage 500EX, extended to SIS and SLR. In both the '105s and the' 600s, Shimano produced a Golden Arrow version. The parts of both groups were very similar. In 1990, the group was replaced by the 105SC series.
The Shimano 105 Dual Pivot (as opposed to single-pivot brakes) were the first brakes Shimano produced on a large scale with this superior power transmission technology. In the early 2010s, Shimano 105 was upgraded by the manufacturer and continues to be today "a serious alternative to more expensive switching groups." (Tour magazine) The components of the group are usually slightly heavier than the Dura Ace- and Ultegra groupsets.
For the 5800 series launched in 2015, the key technologies of the established race groups Dura-Ace and Ultegra have been adopted. One of the main novelties was the 11-speed drive in the 105 group.
As of 2015, Shimano also expanded its range in the 105 class to include hydraulic disc brakes. The brake RS505 and the mechanical-hydraulic shift lever (ST-RS505) are on the level of the 105 group, but no longer received the group name. They are fully compatible with the higher groups of equal number of turns.[1]
Many manufacturers equip their racing and cyclocross wheels from factory with Shimano 105, including Drössiger, Müsing, and Stevens.
Bilder[edit]
Components listet by year
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Frame shifters of the 1. generation Golden Arrow
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Shimano 105SIS delareur (mid 80s)
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Shimano 105 brakes BR-1050 mono privot
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Shimano 105 crank FC-1055
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Shimao 105-front hub HB-1055
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Shimano 105 Schalt-Bremskombination STI
ST-1055 -
Shimano 105 delareur
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Shimano 105 3times crank FC-5600
References[edit]
- ↑ "Shimano 105: Neue hydraulische Rennrad-Scheibenbremse". Retrieved 2016-08-08.
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