Tuesday night, Hamsterley. Section 13 – first of the two bomb-hole-type-things near the end. I think the weld at the brace (a well known weak point from what I’ve see on here and MTBR threads) failed on compression at the bottom, then the rest of the down tube sheared off after compression getting over the top. I suspected something happened as there was quite a loud ‘crack’.
Obviously, the down tube sheared, the top tube folded, the head-angle went to a Geometron-shaming 45 degrees, and the chain ring dug into the ground stopping the bike immediately. I carried on over the bars and went OTB to the right, landing on my hip (slight bruising) and my elbow (Race Face D30 pads are quite useful).
I then had a 2 mile push back to the cheeky layby where I parked (not to dodge the parking fees, though. I have a volunteer pass) with the pedals clashing off what seemed like every small rock.
Thing is, I wasn’t really going that fast or ‘sending it’ over all the jumps and drops. I was actually feeling a bit ‘Meh’ at the time. Thinking about where it happened, I guess I’m quite lucky it was where it was. Higher up the trail or somewhere like Pike’s Teeth and it could have been a ride to hospital.
Might not be too clear from the photo, but the sheared edges have two different surfaces. The top at the edge of the brace weld is relatively smooth, and the rest of the circumference looks as though the tube has been pulled apart.
Replacement will be the issue – although this frame is <2 years old, it was a warranty replacement for the original frame in 2015. Hopefully Ison will be able to help out.
TL;DR I was just riding along, really.