Difference between revisions of "Inverted fork"

From CycleChaos
Jump to navigation Jump to search
m (New page: Also known as '''upside-down forks''' or '''USD''' for short. On many sport bikes, the telescopic forks are inverted, with the spring/damper unit clamped to the yoke while the stanchi...)
 
 
(3 intermediate revisions by 2 users not shown)
Line 1: Line 1:
[[Image:Inverted forks on a Honda CBR600RR.jpg|right|thumb|Image:Inverted forks on a [[Honda CBR600RR]]]]
Also known as '''upside-down forks''' or '''USD''' for short.
Also known as '''upside-down forks''' or '''USD''' for short.


On many sport bikes, the [[telescopic fork]]s are inverted, with the spring/damper unit clamped to the yoke while the stanchions are at the bottom of the assembly. This is done for two reasons: to '''reduce unsprung weight''' by having the heavier components be suspended, and to improve the strength and rigidity of the assembly by having the bulkier and stronger component being directly supported by the pivot.<ref name=UltiMoto181>Wilson, H. ''The Ultimate Motorcycle Book'' p. 181 Dorling-Kindersley Ltd. 1993 ISBN 0 7513 0043 8</ref>   
On many sport bikes, the [[telescopic fork]]s are inverted, with the spring/damper unit clamped to the yoke while the stanchions are at the bottom of the assembly. This is done for two reasons: to '''reduce unsprung weight''' by having the heavier components be suspended, and to improve the strength and rigidity of the assembly by having the bulkier and stronger component being directly supported by the pivot.<ref name=UltiMoto181>Wilson, H. ''The Ultimate Motorcycle Book'' p. 181 Dorling-Kindersley Ltd. 1993 ISBN 0 7513 0043 8</ref>   


The disadvantage of the inverted design is that the entire reservoir of damping oil is stored directly over the slider seal such that, if the slider seal were to leak, the oil would drain out, reducing the effectiveness of the fork.
The disadvantage of the inverted design is that the entire reservoir of damping oil is stored directly over the [[slider]] seal such that, if the slider seal were to leak, the oil would drain out, reducing the effectiveness of the fork.
 
==References==
{{reflist}}
 
[[Category:Suspension]]

Latest revision as of 22:19, 26 November 2010

Image:Inverted forks on a Honda CBR600RR

Also known as upside-down forks or USD for short.

On many sport bikes, the telescopic forks are inverted, with the spring/damper unit clamped to the yoke while the stanchions are at the bottom of the assembly. This is done for two reasons: to reduce unsprung weight by having the heavier components be suspended, and to improve the strength and rigidity of the assembly by having the bulkier and stronger component being directly supported by the pivot.[1]

The disadvantage of the inverted design is that the entire reservoir of damping oil is stored directly over the slider seal such that, if the slider seal were to leak, the oil would drain out, reducing the effectiveness of the fork.

References[edit | edit source]

  1. Wilson, H. The Ultimate Motorcycle Book p. 181 Dorling-Kindersley Ltd. 1993 ISBN 0 7513 0043 8