Bürokraten, editor, Administratoren
15.340
Bearbeitungen
SunTour Fahrradbauteile: Unterschied zwischen den Versionen
Aus WikiPedalia
SunTour Fahrradbauteile (Quelltext anzeigen)
Version vom 23. Oktober 2019, 13:50 Uhr
, 23. Oktober 2019→Schalthebel: Übersetzngsanfang
(→Winner Pro, Alpha und die zweite Winner Serie: fertig... puh - ganz schön schwierige Sprache...) |
(→Schalthebel: Übersetzngsanfang) |
||
| Zeile 114: | Zeile 114: | ||
==Schalthebel== | ==Schalthebel== | ||
SunTours Erfindungen bei Schalthebeln verlief parallel zu denen von Schraubkranzfreiläufen und Schaltwerken. | |||
Fahrräder mit Kettenschaltung der 1960er und 1970er Jahre hatten üblicherweise [[Unterrohr]]schalthebel, die es erforderten, eine Hand vom [[Lenker]] zu nehmen, um den Gang zu wechseln. Einige einfache Fahrräder hatten am [[Vorbau]] montierte Schalthebel. Das sah für unerfahrene Fahrer gut aus, es gab aber keine Möglichkeit, die Hand gegen Vibrationen abzustützen. Zudem boten sie das Risiko, sich am empfindlichen Stellen des Körpers zu verletzen. Auf diese Probleme hatte SunTour Antworten: | |||
===Barcons=== | |||
===[[Barcons ®]]/Lenkerendschalthebel=== | |||
Sun Tour Barcons (handlebar-end shifters) were the favored shifters for use with drop handlebars from the mid-1970s until the advent of index shifting in the late 1980s. These shifters allow precise control by wrapping the thumb and index finger around the handlebar end, operating the lever with the palm of the hand and the other fingers. | Sun Tour Barcons (handlebar-end shifters) were the favored shifters for use with drop handlebars from the mid-1970s until the advent of index shifting in the late 1980s. These shifters allow precise control by wrapping the thumb and index finger around the handlebar end, operating the lever with the palm of the hand and the other fingers. | ||
===Power shifters=== | |||
===[[Power shifters]]=== | |||
Traditional shift levers held their position against the cable pull by friction of the cover plate against the lever body. Friction was controlled by screw, sometimes with a D-ring handle so it could be adjusted during riding. Tightening required a hard pull against both the friction and the cable's tension. The Barcons had a patented feature, a ratcheted assembly so the friction only counteracted loosening of the cable. | Traditional shift levers held their position against the cable pull by friction of the cover plate against the lever body. Friction was controlled by screw, sometimes with a D-ring handle so it could be adjusted during riding. Tightening required a hard pull against both the friction and the cable's tension. The Barcons had a patented feature, a ratcheted assembly so the friction only counteracted loosening of the cable. | ||
===Daumeschalthebel=== | |||
===[[Daumeschalthebel]]=== | |||
What Barcons did for bicycles with drop bars, the Sun Tour thumb shifter, which mounted just inboard of the handlebar grips, did with flat bars. It conquered the mountain-bike market in the early 1980s. | What Barcons did for bicycles with drop bars, the Sun Tour thumb shifter, which mounted just inboard of the handlebar grips, did with flat bars. It conquered the mountain-bike market in the early 1980s. | ||
