i am in the process of buying a 1975 dax 70cc, which has been restored to originality, she is red in colour, with only 4 former keepers, and only 4,400 miles on the clock, which is believed to be genuine!, the log book is present, and has a current mot, having never riden one of these little bikes, can anyone let me know how they perform?, i have heard that they are great fun, also what can i expect to pay for her,as a rough guide?