Dual spring rear suspension for motorcycles

Details Dual spring rear suspension for motorcycles Dual spring rear suspension for motorcycles

1974-10-31

1976-06-29

Goodman, Philip

Motor vehicles

Steam traction engines

267 57, 267154, 280284, B62D 6102, B62K 1102

Patent

active

039660060

ABSTRACT:
A rear suspension for motorcycles which employs primary and secondary torsion springs operating on the rotative axis of the horizontally disposed and rearwardly trailing fork carrying the powered traction wheel. The two springs are of selected resilience and are quickly replaceable without disassembly of the suspension system, and each is adjustable for controlling the normal vehicle height and pitch attitude to be subjected to varying loads. Load application to this rear suspension system is substantially central of the vehicle and with the result that radius of gyration is minimized, unsprung weight is reduced, and with improved dynamics characterized by a spring-stop snubbing action resulting in increased traction and ground engagement capability for superior handling.

REFERENCES:
patent: 2705154 (1955-03-01), Torre
patent: 2751217 (1956-06-01), Thompson
patent: 2821860 (1958-02-01), Huston
patent: 2942871 (1960-06-01), Kraus
patent: 3241620 (1966-03-01), Brudnak
patent: 3432158 (1969-03-01), Goodwin
patent: 3616870 (1971-11-01), Kramer
patent: 3642083 (1972-02-01), Rodler

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