30-09-2019, 10:38 AM
Ian - I am beginning to wonder if the the gearboxes have different problems:-
Close ratio conversion - I am confident that the roller bearings in this box are not to blame having been replaced twice and made no difference. The inter-shaft bearing has also been replaced twice but I did not check the first motion shaft for distortion. It seems the replacement close ratio gears have problems - I came across a thread from the old forum where someone else was having very similar problems:-
http://pub25.bravenet.com/forum/static/s...3&cmd=show
The noise disappears on this box when 4th gear is selected - what happens differently in the gearbox when 4th is selected compared to 1st, 2nd, 3rd and neutral?
Original Nippy box - Although quieter in 4th this gearbox was still noisy. I know there is a problem with lay shaft end float and the 3rd motion shaft bearing on this box. I will sort out these problems and see what difference it makes.
Close ratio conversion - I am confident that the roller bearings in this box are not to blame having been replaced twice and made no difference. The inter-shaft bearing has also been replaced twice but I did not check the first motion shaft for distortion. It seems the replacement close ratio gears have problems - I came across a thread from the old forum where someone else was having very similar problems:-
http://pub25.bravenet.com/forum/static/s...3&cmd=show
The noise disappears on this box when 4th gear is selected - what happens differently in the gearbox when 4th is selected compared to 1st, 2nd, 3rd and neutral?
Original Nippy box - Although quieter in 4th this gearbox was still noisy. I know there is a problem with lay shaft end float and the 3rd motion shaft bearing on this box. I will sort out these problems and see what difference it makes.