regarding putting the compression ring in with the gap at the back, do you not think it's just as likely to allow water into the gap if it's at the back? at the back is the lowest point so any water that runs off the top tube will go straight down towards it. if its at the front it's at least higher up and probably more difficult for water to go down there?

@@fenwick458 I think it is less likely for water to find itself down the gap. However, regardless of where you place the gap, if you're using water under pressure to clean your bike, water will find its way into all kinds of places it shouldn't be. On my personal Diverge, I replaced the retaining ring with a re-designed unit made from high tensile material, 4 adjustment screws, and perpendicular locking screws. I placed the gap towards the back where it is better shrouded, and I put a small dap of silicon caulk over the gap. This doesn't make it "water proof", but it has made it highly "water resistant". Regardless of where you place the gap, it's very important that you dis-assemble, clean and lubricate the headset much more often on a bike equipped with a Future Shock. The specific design of the FS has tends to be less durable than a tradition headset. Of course this is just my opinion, based on decades of experience maintaining bikes.

Since the resistance is proportional to the roller RPM, shifting gears at a constant cadence drives the roller faster, and induces more resistance. 2:00