... Having no idea what kind of welder I needed and what skills that person should have, it was a challenging endeavor. The first one I found said he didn’t have the right machine for that job. The second sent me to a third, who at long last confirmed that no welder in town would have the right machine to get this job done, I’d have to return to either Chimaltenango or Antigua...
Zbierznością jest zastosowanie piasty Rohloffa w obu przypadkach.
Wg mnie przyczyną jest ten kilkukilowy klocek przyczepiony do łańcucha.
I studied the frame closely, trying to gain some insight into the source of the problem, and realized the smallest part of the tubing is located just below the attachment site of the rear disc brake caliper. So all that force from braking with a fully loaded bike would be directed right to that narrow weld in the tubing. Some other bikes have a truss rod to support this torque force from the brake caliper, or mount the brakes to a different area on the frame…
Sigma Brakelight:...
Lewa klamka powinna chyba obsługiwać przedni hamulec