Info about girder fork with double wishbone
 Advantages and function of a girder fork with double wishbone In a braking with the girder fork remains the geometry in  comparison to the telescopic fork almost unchanged. While you braking, the rake angle changed only minimally 1°, the trail is increased by a few millimeters and thus the wheelbase, so that in a direct comparison with a telescopic fork a difference in the wheelbase of nearly 40 mm can emerge. The fork chassis is stabilized while braking. The steering and the behavior in curves is significantly easier. The geometric leverage of the fork press the center of gravity (CG) back. And the tire forces are decrease with increasing braking force, which is positive for the grip of the tire. The place of the center of gravity and the reduced tire forces, allows a higher braking force and thus to braking later. The chassis behaves in the load alteration in the cornering apex neutral and very homogeneous. Even the chassis stabilized in curves with the wheelbase extension, depending on the speed and the resulting of force. The wheelbase of girder fork chassis can constructed therefore also be shorter. |
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Claude Fior |
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| The Fior wishbone fork was similar to the Hossack front end later developed in Britain, followed a decade later by John Britten in NZ. | |
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| (Picture from www.fiorconcept.com) |
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| (HOSSACK BMW - Telever) | |
| John Britten | |
| Video 1 | Video 2 | |
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| (Britten V1000 - Girder fork with double whisbone) | |
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| (Chassis design) | |
| Video 1
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| Video 2 |
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