Floor failure!!!

Originally posted by offgrid The axle tube really shouldn’t bend under normal conditions so it’s fine to measure the crown with the weight on the wheels. I miked the frame tube thickness on mine at 0.1 inch. Pretty thin material. The fact that you have been meticulous about weighing your rig should help with your FR warranty claim. I would emphasize that you know for sure that you were not overweight when you discuss it with them, and that you have not taken your rig on anything except normal roads. Let’s hope they take care of the problem for you.

Is your frame rusted inside or out?

The axle tube really shouldn’t bend under normal conditions so it’s fine to measure the crown with the weight on the wheels. I miked the frame tube thickness on mine at 0.1 inch. Pretty thin material.

The fact that you have been meticulous about weighing your rig should help with your FR warranty claim. I would emphasize that you know for sure that you were not overweight when you discuss it with them, and that you have not taken your rig on anything except normal roads. Let’s hope they take care of the problem for you.

I guess I should have asked, weight on the tires or off to measure the crown?

Originally posted by offgrid The most common failure folks see from an axle overload (if that’s what this is) is a bent axle so you might want to check for that too. If you run a string line along the bottom of the axle tube it should show a slight crown in the center, like about 3/16 or 1/4 inch or so. If it’s not the the axle tube has probably been bent too. You can also look for the wheel on that side having negative camber (splayed out at the bottom).