Rupert's first attempt at locomotive building was for an entry into the competition run by the Facebook minimal gauge railways group. To see the 'rules' visit
https://www.facebook.com/groups/MinimalGaugeRailways/permalink/1040142009371113/ His friction drive design, now named 'Imp' won the competition. A write up of the construction and parts list can be found in the files section of the Facebook group at
https://www.facebook.com/groups/MinimalGaugeRailways/fesil/ and will more information be added to the 'Locomotives' page of this website in due course.