Surely the wheel should have folded before bending that dench NJS tubing?
If you hit a wheel straight, it is immensely strong. Plenty of frames have been wrecked by wheel-impact crashes where the wheel survives entirely unscathed.
Maybe enough flex in the fork to drive it back into the down tube?
This, for pretty much any steel fork (but especially a track fork with round blades) on any moderately close clearance frame. It doesn't have to be dangerously tight before the impact.
If you hit a wheel straight, it is immensely strong. Plenty of frames have been wrecked by wheel-impact crashes where the wheel survives entirely unscathed.
This, for pretty much any steel fork (but especially a track fork with round blades) on any moderately close clearance frame. It doesn't have to be dangerously tight before the impact.