I'm looking at some Commando gearboxes for sale on EBay and also a couple that are for sale privately. One of the best looking and most expensive boxes is an 850 box which the seller says has the high second gear ratio.
On checking part numbers at various parts retailers, it appear the gearbox shell changed in 73. The pre 73 shell is part # 06-0808 while the 73 and 74 shells are part # 06-4126.
This info is from the net, I don't have the actual parts books for these years.
If the shell was changed in 73, was it made stronger? Aside from the high 2nd gear, which is nice but not necessary, are there any other advantages to the later box? I recall reading something about an added circlip.
Also, I'm wondering at what serial number did the high second change occur. I found an old Access Norton post on this subject. One owner with a gearbox 307xxx says his gearbox has the high second.
Glen
On checking part numbers at various parts retailers, it appear the gearbox shell changed in 73. The pre 73 shell is part # 06-0808 while the 73 and 74 shells are part # 06-4126.
This info is from the net, I don't have the actual parts books for these years.
If the shell was changed in 73, was it made stronger? Aside from the high 2nd gear, which is nice but not necessary, are there any other advantages to the later box? I recall reading something about an added circlip.
Also, I'm wondering at what serial number did the high second change occur. I found an old Access Norton post on this subject. One owner with a gearbox 307xxx says his gearbox has the high second.
Glen