On Tuesday, April 16, 2019 at 6:06:57 AM UTC-7, Frank Krygowski wrote:
On 4/16/2019 6:25 AM, Duane wrote:
James wrote:
On 15/4/19 1:58 am, wrote:
One of my sons, who is pretty big and strong,, rides an S-Works
Tarmac CF frame (about a 2006 model or so) with the plastic
(polymer??) bits in the forks and the chainstays. It seems to be in
excellent condition. Have you ever heard of any problems with the
plastic suspension bits disintegrating or breaking after a long time?
Thanks!


Perhaps a better question is do the plastic suspension bits actually do
anything?


Maybe but I didn’t notice much difference. I run 90 psi with my HED wheels
though. Maybe @ 120psi on rough roads?

I have a couple friends who have them. They noticed no difference at all.

How would they? You would have to have a Zert and non-Zert frame for comparison. I had a Roubaix with Zerts and sold it to my son (after it was stolen and recovered), and I had no idea what affect, if any, they had on the ride versus the CF layup, geometry, tire profile and pressure, etc., etc. It seems to be holding up under my son -- no Zert failures. It's a good fast rain bike with fender mounts, although not a ton of tire clearance with fenders.

-- Jay Beattie.