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SunTour Fahrradbauteile (Quelltext anzeigen)
Version vom 21. Oktober 2019, 09:04 Uhr
, 21. Oktober 2019→Sun Tour Schaltwerke und Produktlinien: Ein wenig Struktur
(→Siehe auch: Verlinkungen ergänzt) |
(→Sun Tour Schaltwerke und Produktlinien: Ein wenig Struktur) |
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Also see the 1980, 1989 and 1992 Sun Tour component listings, which are online. | Also see the 1980, 1989 and 1992 Sun Tour component listings, which are online. | ||
===1960er Jahre=== | |||
The invention of the slant-parallelogram rear derailleur seems like a good place to start. Nobuo Ozaki of Maeda (Sun Tour's parent company) invented the design in 1964, and it was soon patented. The patent would expire in 1984, and Sun Tour's competitors would adopt the design immediately after. In the twenty-year interim, Sun Tour's derailleurs were typically superior to their counterparts. The primary benefit of the slant parallelogram design is that the distance between the jockey wheels and rear cogs varies less as the derailleur is moved. The first slant parallelogram derailleur was Sun Tour's Grand Turismo model. | The invention of the slant-parallelogram rear derailleur seems like a good place to start. Nobuo Ozaki of Maeda (Sun Tour's parent company) invented the design in 1964, and it was soon patented. The patent would expire in 1984, and Sun Tour's competitors would adopt the design immediately after. In the twenty-year interim, Sun Tour's derailleurs were typically superior to their counterparts. The primary benefit of the slant parallelogram design is that the distance between the jockey wheels and rear cogs varies less as the derailleur is moved. The first slant parallelogram derailleur was Sun Tour's Grand Turismo model. | ||
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Not much information is around from the late 60s or early 70s. I think the top model from around that time period was the Sun Tour V. [The V series rear derailers were sold with different cage lengths. The preferred model for wide-range systems was the long-cage VGT. -- John Allen] | Not much information is around from the late 60s or early 70s. I think the top model from around that time period was the Sun Tour V. [The V series rear derailers were sold with different cage lengths. The preferred model for wide-range systems was the long-cage VGT. -- John Allen] | ||
===1970er Jahre=== | |||
In 1975 Sun Tour introduced Cyclone derailleurs, the new top model. They were quite a bit cheaper than Campagnolo Nuovo Record and shifted much better. | In 1975 Sun Tour introduced Cyclone derailleurs, the new top model. They were quite a bit cheaper than Campagnolo Nuovo Record and shifted much better. | ||
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1979 Sun Tour catalog. | 1979 Sun Tour catalog. | ||
===1980er Jahre=== | |||
Sun Tour Symmetric shifters were an esoteric piece of early 1980s Japanese engineering. They could be mounted on frames with a single downtube shifter braze-on (like some of the Shimano AX components took) or with a supplied clamp-on belt. They are unique because shifting the rear derailleur automatically trims the front via a cam mechanism.[Sheldon regarded the design as flawed, but opinions differ -- John Allen] The video below, from N. Keith Duncan, shows the operation of this shift lever. | Sun Tour Symmetric shifters were an esoteric piece of early 1980s Japanese engineering. They could be mounted on frames with a single downtube shifter braze-on (like some of the Shimano AX components took) or with a supplied clamp-on belt. They are unique because shifting the rear derailleur automatically trims the front via a cam mechanism.[Sheldon regarded the design as flawed, but opinions differ -- John Allen] The video below, from N. Keith Duncan, shows the operation of this shift lever. | ||
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In 1989 the lineup was changed again. From top to bottom: Superbe Pro, Sprint, GPX, Olé, and Blaze. Olé was a response to Shimano Santé and featured white details. Didn't really take off. 1989 Catalog and additional scans from around the same time. | In 1989 the lineup was changed again. From top to bottom: Superbe Pro, Sprint, GPX, Olé, and Blaze. Olé was a response to Shimano Santé and featured white details. Didn't really take off. 1989 Catalog and additional scans from around the same time. | ||
===1990er Jahre=== | |||
Most of the problems with Accushift had been cleaned up by 1990. Superbe Pro was still top-quality componentry, but Shimano had taken over the market. Superbe Pro sealed hubs were of course excellent. There was the famous hidden-spring brakeset which functioned well and is now collectible. Sun Tour SL replaced Sprint in 1991. A bit from the 1992 catalog: | Most of the problems with Accushift had been cleaned up by 1990. Superbe Pro was still top-quality componentry, but Shimano had taken over the market. Superbe Pro sealed hubs were of course excellent. There was the famous hidden-spring brakeset which functioned well and is now collectible. Sun Tour SL replaced Sprint in 1991. A bit from the 1992 catalog: | ||
