12-11-18, 02:54 AM
Given that the cutting and welding is to the subframe and not the main structural elements of the frame itself (that bits keep the wheels in line and that the suspension bolts onto), then a MOT tester wouldn't pick this up as a failure element.
Personally, I've always told my insurer about any modifications (even when I basically built a frame from a headstock and top tube (keeping the frame number stamping and the manufacturer's plate) and they've all been OK with it - it was only the big frame mod that they wanted to inspect, and even then, it was the finished bike that inspected (back in the 80's), by a local engineering firm. No bike issues with substantial premium hikes either.
These days I think I might have more of an insurance problem from the mainstream insurers, but there are specialists about.
Personally, I've always told my insurer about any modifications (even when I basically built a frame from a headstock and top tube (keeping the frame number stamping and the manufacturer's plate) and they've all been OK with it - it was only the big frame mod that they wanted to inspect, and even then, it was the finished bike that inspected (back in the 80's), by a local engineering firm. No bike issues with substantial premium hikes either.
These days I think I might have more of an insurance problem from the mainstream insurers, but there are specialists about.