The late Nick Wingrove's son, Jason, is now riding his father's Comet. He phoned me Suday evening to say that he had broken down about a couple of mile from me and could I help. I went out to find him and the lower nipple had pulled off the clutch cable. He has now bought and fitted a new cable but there is a further problem. There is no drive. I have just been over to see if I can help and I find myself out of my depth. The primary drive seems to be correct and I can kick the engine over on the kick starter, which to me indicates that the clutch is holding. The rear chain is intact as are the rear brake drums, sprocket etc. To start with the clutch cable was incorrectly adjusted as there was no free play but I sorted that out. I have tried moving the rear wheel by hand while Jason changed gear and at no point is there any sign of any of the gears trying to engage. The kick start cover was taken off and the pinion which is rotated by the gear change lever was moved with the aid of a set of pliers and it is just the same in that spinning the rear wheel never engages any gears no matter how the gear change shaft is rotated. I am not familiar with the Burman gear box so if anyone has any advice or can think of something else to check that will avoid taking the bike apart to remove the gearbox then that would be very helpful. Thank you in advance