Thanks guys That was with a strange gear ratio, now use 18:17 which gives a chainstay of ~373mm. But yeah, the dropouts are really long, can easily get them to 390 but the bike then needs a disc brake. Would like to try a 73* head tube, lower rise and longer front end sometime in the future but for now this is perfect Rear rim is holding up well, hoping to see some rear Trialtech square hole rims in the future.