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Wie funktionieren Bandbremsen? (Quelltext anzeigen)
Version vom 13. Juli 2018, 06:39 Uhr
, 13. Juli 2018→Aufbau einer Bandbremse: Versuch mit Bild responsivität
(→Quelle: ist natürlich noch in Arbeit) |
K (→Aufbau einer Bandbremse: Versuch mit Bild responsivität) |
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A bicycle band brake is cable-operated. One end of the band is attached to a lever, and the other, to a fixed stop, so this is a simple band brake. In the photo below, we are looking at the side which faces the hub. The drum, shown at the upper right, threads onto the left side of the axle. The band is held inside a shell, shown at the lower left, that is fitted onto the axle inside the left rear dropout. The lever attaches to the shell at 3 o'clock, and the stop is at 4 o'clock. The two little adjuster bolts with locknuts at 12 o'clock and 8 o'clock hold the band close to the drum, avoiding wasted motion A clamp on the left chainstay prevents the shell of the brake from being carried around, same as with a coaster brake. | A bicycle band brake is cable-operated. One end of the band is attached to a lever, and the other, to a fixed stop, so this is a simple band brake. In the photo below, we are looking at the side which faces the hub. The drum, shown at the upper right, threads onto the left side of the axle. The band is held inside a shell, shown at the lower left, that is fitted onto the axle inside the left rear dropout. The lever attaches to the shell at 3 o'clock, and the stop is at 4 o'clock. The two little adjuster bolts with locknuts at 12 o'clock and 8 o'clock hold the band close to the drum, avoiding wasted motion A clamp on the left chainstay prevents the shell of the brake from being carried around, same as with a coaster brake. | ||
[[Datei:Band-brake (for bicycle rear wheel)c.jpg|center|Bandbremse von Innen]] | <div>[[Datei:Band-brake (for bicycle rear wheel)c.jpg|center|Bandbremse von Innen]]</div> | ||
A bicycle band brake is not intended to be self-locking, but it is self-actuating -- the length and coefficient of friction of the band are chosen to multiply the force from the cable pull by a calculated amount. The drum turns clockwise as seen in the photo, and so it also tries to pull the band clockwise. A light pull on the lever as 3 o'clock results in tension on the band which increases counterclockwise all the way around the band to the stop at 4 o'clock. | A bicycle band brake is not intended to be self-locking, but it is self-actuating -- the length and coefficient of friction of the band are chosen to multiply the force from the cable pull by a calculated amount. The drum turns clockwise as seen in the photo, and so it also tries to pull the band clockwise. A light pull on the lever as 3 o'clock results in tension on the band which increases counterclockwise all the way around the band to the stop at 4 o'clock. | ||
==Vorteile einer Bandbremse== | ==Vorteile einer Bandbremse== | ||
