> The frame is generally not designed to be welded like that, so without reinforcement it will be significantly weaker. Welds can definitely be strong enough i

> The frame is generally not designed to be welded like that, so without reinforcement it will be significantly weaker. Welds can definitely be strong enough if done properly, as evidenced by the fact that welded parts involved in accidents can often be found to have broken somewhere other than a nearby weld. However achieving the proper level of welding is easier said than done, and in particular being confident that a particular weld is done properly requires advanced equipment for non-destructive testing (x-ray, conductivity, echo ...)