Atherton/DW6 has shock, link (rocker), ss, cs, linkx2 (main pivot) – 6 bar
Ah – there’s 2 small links by the BB controlling the CS rotation. Hard to see in the pics, looked like only. It’s called DW6 and I assumed Dave can count : )
It was this that confused me
At first glance, the suspension design looks like ‘just’ a regular DW Link bike with a pair of shortish links mounted astride the seat tube. But look a bit longer and you’ll spot a pivot placed on the chainstays. That’s a Horst link that is. I’m pretty sure that makes this bike a 6-bar design.
Had me thinking of a DW link that has 2 links of the ST or ST and BB area, plus the Horst – but thinking about it if it had a single link between CS and BB the CS wouldn’t be controlled/constrained.
A 4 bar linkage has the CS, SS, ST and the rear section of the rocker as the 4 bars or the 4 sections that create a loop. The shock isn’t a bar? But anyway…
Interestingly I only threw out a very old Astro frame the other week that has a similar double short link at the BB end of the CS, to change the CS arc. That frame must be 15+ years old. So what Dave Weagle’s done here is a similar design, just with a Horst link – which would have been covered by the patent when Astro made that frame. Nothing truly new out there.