I seem to be struggling to get my mass in the right spot on the bike and would appreciate any advice from the crowd. My intention has been to get a proper fitting but at this point I’m waiting to be fully vaccinated and hoping to solve at least the scariest problem sooner than that.
My problems are the following:
- Often I find myself sliding forward on the saddle. I’ve played around a little bit with the saddle fore/aft position but to no avail.
- When I’m out of the saddle sprinting I occasionally lift the back wheel enough to lose traction.
- Terrifyingly, 2 days ago while descending a hill at 40mph a bump made my weight “adjust” the handlebars down 1/4". I was on the hoods at the time, not the drops. I use torque wrenches and the stem bolts are torques to spec so I’m thinking I just have lots of weight forward on the bike and the unavoidable bump just added enough force?
For filling in the details, I’m 5’10" (178cm) and 150 lbs (68kg). The bike is a 54cm tarmac SL5, stem is 90mm.