I think the answer might be, none, for the last twenty years. However Dougie has appeared on the odd motoring slot, but proper trials coverage, no not really.
The front disc msut have the amount of movement you describe, its a floating disc.
Have a look here, http://www.gasgasmuseum.com/ should be able to identify the year from the pictures.
Hi Guys,
Just fitting one of thhese Hebo tanks to the front of the bike and the instructions (or me) are not to clear.
I take it the pipe that has a small tube inside the tank whoch sits on the bottom connects to the vent tube from the fiiler cap and that the other pipe which has a plastic vent type top just hangs in the open?
Does it really manage to syphon from the Hebo tank into the bike tank OK?