Derny: Difference between revisions
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The first Dernys were built by ''Roger Derny and Sons'' of [[Paris, France]] in 1938. That firm is no longer in business and the name "Derny" is now applied to all such vehicles, regardless of manufacturer. |
The first Dernys were built by ''Roger Derny and Sons'' of [[Paris, France]] in 1938. That firm is no longer in business and the name "Derny" is now applied to all such vehicles, regardless of manufacturer. |
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For most ''derny races'', the cyclist drafts off the Derny for the duration of the event. In some events, the derny is used to bring the bicycle up to speed, at which point the Derny pulls off and the cyclist continues the race without a motorized pacer. For speed records, the bicycle used generally has a fixed gear and the gear ratio is too high to allow the cyclist to start from a stop, so Dernys are used to provide starting assistance (though the current absolute world bicycle-speed records were set behind fairing-equipped automobiles) |
For most ''derny races'', the cyclist drafts off the Derny for the duration of the event. In some events, the derny is used to bring the bicycle up to speed, at which point the Derny pulls off and the cyclist continues the race without a motorized pacer. For speed records, the bicycle used generally has a fixed gear and the gear ratio is too high to allow the cyclist to start from a stop, so Dernys are used to provide starting assistance (though the current absolute world bicycle-speed records were set behind fairing-equipped automobiles, see [[cycling records]]). |
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On the track, a rider drafting behind a Derny is known as a ''[[stayer]]'', as is a bicycle designed or used for this kind of racing; and in a ''[[stayer race]]'' each rider trails a derny from beginning to end. |
On the track, a rider drafting behind a Derny is known as a ''[[stayer]]'', as is a bicycle designed or used for this kind of racing; and in a ''[[stayer race]]'' each rider trails a derny from beginning to end. |
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The 560km [[Bordeaux-Paris]] [[Classic cycle races|Classic road race]] was motor-paced using Dernys from half-distance. |
The 560km [[Bordeaux-Paris]] [[Classic cycle races|Classic road race]] was motor-paced using Dernys from half-distance. |
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===References=== |
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NOTE: Footnotes in this article use names, not numbers. Please see [[Wikipedia:Footnotes]] for details. |
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1) Assign your footnote a unique name, for example TheSun_Dec9. |
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3) Take note of the name of the footnote that immediately precedes yours in the article body. |
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4) Add #{{Note|TheSun_Dec9}} to the list, immediately below the footnote you noted in step 3. No need to re-number anything! |
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5) Multiple footnotes to the same reference: see [[Wikipedia:Footnotes]] for a how-to. |
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NOTE: It is important to add footnotes in the right order in the list! |
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#{{Note|FastestBicycle_Feb2}}{{Web reference | title=Fastest Bicycle Speed | work=Guiness World Records | url=http://www.guinnessworldrecords.com/content_pages/record.asp?recordid=43641 | date=February 2nd | year=2006}} |
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==External links== |
==External links== |
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Revision as of 15:42, 2 February 2006
A Derny is a type of motorcycle designed and built specifically for motor-paced track cycling events (eg: motor-paced races in six-day and Keirin racing) or motor-paced road races. On a Derny, the driver sits close to the back of the bike in an upright (almost standing) position to provide an envelope of low wind resistance for the cyclist 'drafting' or slipstreaming behind. There is sometimes a horizontal roller mounted to the rear of the bike to prevent crashes should the bicycle's front tire come in contact with the Derny.
The first Dernys were built by Roger Derny and Sons of Paris, France in 1938. That firm is no longer in business and the name "Derny" is now applied to all such vehicles, regardless of manufacturer.
For most derny races, the cyclist drafts off the Derny for the duration of the event. In some events, the derny is used to bring the bicycle up to speed, at which point the Derny pulls off and the cyclist continues the race without a motorized pacer. For speed records, the bicycle used generally has a fixed gear and the gear ratio is too high to allow the cyclist to start from a stop, so Dernys are used to provide starting assistance (though the current absolute world bicycle-speed records were set behind fairing-equipped automobiles, see cycling records).
On the track, a rider drafting behind a Derny is known as a stayer, as is a bicycle designed or used for this kind of racing; and in a stayer race each rider trails a derny from beginning to end.
The 560km Bordeaux-Paris Classic road race was motor-paced using Dernys from half-distance.
External links
- The history of the Derny.