twin link

Mountain Biking UK - - SUSPENSION -

These frames use a rigid rear tri­an­gle that’s con­nected to the main­frame by a pair of short links. It’s an­other form of four-bar link­age, but with the chain­stay pivot much closer to the main pivot than on a Horst link de­sign. Again, the axle’s di­rec­tion is dic­tated by a mov­ing in­stant cen­tre. Some twin-link set-ups, such as Santa Cruz’s ‘VPP’ (Vir­tual Pivot Point), In­tense’s ‘JS Tuned’ and DMR’s ‘Or­bit Link’ sys­tems, use links that counter-ro­tate (turn in op­po­site di­rec­tions). Oth­ers, in­clud­ing Gi­ant’s Mae­stro lay­out, Mon­draker’s ‘Zero’ sys­tem and Dave Wea­gle-de­signed ‘DW-Link’ bikes (Pivot, Ibis), have links that co-ro­tate (turn in the same di­rec­tion). With counter-ro­tat­ing links, the cur­va­ture of the axle path can be made to vary through the travel. This can pro­vide anti-squat val­ues that peak in the mid­dle of the stroke, where ped­alling ef­fi­ciency is most im­por­tant, while min­imis­ing pedal kick­back else­where in the travel range.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.