For example, an orange 224 is obviously a single pivot, where as a marin quake is a 4-bar system. but for bikes like the transition tr450 etc, is there an easy way to tell what type of suspension system the bike has? for example, i know i prefer a 4-bar system over a VP system, but is there a way to tell just from the picture of the frame? Thanks!
The best way is to simply ask. VPP is patented, so all VPP bikes will have the logo somewhere on the chainstay. Otherwise, look at the bottom bracket from the left side of the bike. Single pivots will have a single pivot point on, just in front, or just behind the BB. 4-bar systems will have a link just behind the BB that allows the rear triangle to float upward more than forward for most of the stroke. While 4-bar suspensions are generally considered superior in terms of dampening and motion control to single-pivot designs, single-pivots are used when simplicity and durability are the driving forces. You'll find single-pivots on DH, some free-ride, one or two XC, and a bunch of K-Mart bikes, while 4-bars dominate everywhere else. BTW, VPP is a 4-bar design. It just describes a specific style of 4-bar setup. In any case, suspension style is unimportant unless you are most concerned with maintenance. Just go out and demo different bikes to figure out what setup is best for you. What looks great on paper doesn't necessarily transfer to what feels best under your butt.
