His wheel buckled because either they didn't build it properly or it got some sort of abuse, like hit something solid. 100kg is no problem and battery and motor weights are completely insignificant.I read a report from a guy named Neil who recently bought an electric Brompton. He claimed that his front wheel buckled after only 3 rides. He said that the weight of the battery and the motor contributed to this. I sent a message to Neil concerning his weight which he said was around 100kg. This has put me off getting an eBrompton as I am around that weight, too. I wonder if the Tern Vektron range would be more suitable?