u Just following up my letter to Steve Rothwell regarding my 1969 Honda N360 (‘Transmission troubles’,
Help!, July 2017). After a lot of fiddling about, it became obvious that drive was only being lost after going into left-hand lock. This set me thinking, so me and a friend removed the nearside driveshaft and there was the problem: the splined end of the driveshaft is held onto the flange, which is bolted up to the diff, by a circlip which had become detached, allowing the driveshaft to slide out of mesh with the diff. A replacement circlip snapped securely into its groove on the driveshaft resolved the issue.
Drive has been restored to the road wheels, no matter the position of the steering. As the medical profession observe: diagnosis is often far more difficult than cure! Dave Daniels