Here is a link to the specifications of sidecar trial:
http://www.sidecartrials.com/sidecar%20spec.htm
See also the FIM, pages 60 (or 91 of the booklet):
http://www.fim-live.com/fileadmin/alfresco...h_Trial_Eng.pdf
Hello to you.
I am a French 56 years and I practice the sidecar trials with my wife. We run the Championship of France for the second year. I practice trials for many years, always on Montesa.
I came to you because the UK is the home of the sidecar trials.
Excused my English because it is very bad..