Lots of interesting thoughts and suggestions here. I haven't heard from anyone who thinks the very narrow tires might have contributed to it. It is true that I was going "really fast", but I have gone even faster with no issues in the past. The road surface was chip & seal in good condition; I wouldn't have gone anywhere near that fast if I thought I might hit broken pavement. I also wasn't aware of any wind, but I was pretty sweaty from the climb up, and the temperature was cool enough in the morning to feel pretty cold at that speed, so I might not have noticed a small gust.
The idea of lowering the bars a bit is interesting. My bars are set 2 cm below the seat, and I'm not anxious to change my set up. I will take off the front rack and bag and try this again, but will miss the front map and the next two weeks at work don't look like they will leave me any time for rides up to the altitudes that can generate 45+ mph speeds. If the change in front load doesn't change the outcome I might buy some wider tires (Grand Bois Green Cerf?) and try that. I still wonder if the smaller front tire, with 100 lbs of pressure wasn't loosing contact with the road as I shifted my weight backwards. Then, it seems to me, cross air pressure could trigger some shimmy. Unfortunately I did not put my knee against the TT so don't know what that would have done. One other piece of evidence, earlier on the ride I had hit my brakes fairly hard on a short downhill (I thought I heard something bounce off the bike) and the rear wheel skidded sideways, which also surprised me and made me wonder about the tire. michael -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
