Experienced this on my last 2 rides. Bike starts, sounds and drives normal at start of trip. Within 1-3 miles of house, bike coming up to operating temp (4 bars on RID), accelerating slowly in 2nd or 3rd gear, feel and hear a distinct bump in the drive train AND the bike surges forward briefly. Bike then runs perfectly for 200 mile back road trip. In fact, it's a joy to ride. Clock is at 60K with last major service (clutch, brake lines, both shocks etc.) done by Tom Cutter @ 45K. The bump/clunk "feels and sounds" like it's originating somewhere in the rear drive. Like I said, I get the ONE bump and the bike runs perfectly normal after this occurs.
Anyone familiar with this scenario? Possibilities I'm mulling: A wonky universal joint settling into a happy place? Less possible, a sticky brake piston freeing up? Still got a solid month of good riding weather to enjoy, so hopefully the solution can be a winter project.
Anyone familiar with this scenario? Possibilities I'm mulling: A wonky universal joint settling into a happy place? Less possible, a sticky brake piston freeing up? Still got a solid month of good riding weather to enjoy, so hopefully the solution can be a winter project.