I just received this rolling road system from http://www.rollingrails.co.uk which they produced especially for me in to enable me to test, DCC programme and run in locos in both 12mm and 9mm gauges.eg. HOm and 009/H0e. Not having a continuous test track or layout it is going to be very useful as I build new model locos and convert Bemo 12mm HOm to 9mm gauge.
8 sets of rollers are provided, allowing up to 3 locos to be running at once under separate DCC control
(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi1276.photobucket.com%2Falbums%2Fy462%2FRetiarius%2FRoco-on-RollingRails_zps954a1b47.jpg&hash=f436781ad7baede5a5efbb09c4fc9b479b1cb504)
It can take locos up to 285mm wheelbase. It easily fits a Bemo loco
(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi1276.photobucket.com%2Falbums%2Fy462%2FRetiarius%2FBemo-on-RollingRails_zpsd74548e7.jpg&hash=8bdc2f7a062bcac7b659e267e66f01901c988ed5)
The rollers in this case have been set to 9mm and also 12mm gauge as a special item
(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi1276.photobucket.com%2Falbums%2Fy462%2FRetiarius%2FRollingRail-HOm-HOe-rollers_zps4ae0d5b1.jpg&hash=6981eeef8fc74ccbc41494e2b13ff0a627648270)
This show the details of a single roller pair. I had them made to take locos of 10mm between wheel centres.
(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi1276.photobucket.com%2Falbums%2Fy462%2FRetiarius%2FRollingRail-HOm-HOe-roller_zps9c0991e5.jpg&hash=e8c22cfaedc924f6120a93aa984eb3824c477ef8)
The manufacturer is Rolling Rails (http://www.rollingrails.co.uk) at Stoke on Trent and the price for this special unit was