Help identifying a Triumph gearbox

[A65rider]

I've recently acquired a Triton that is based on a 1960 T110 engine and 1961 slimline frame. The gearbox, which I've been told is Triumph, doesn't match the drawings in the 1961 manuals. Can anyone tell what type / year it is (see photo).

[L.A.B.]

I've recently acquired a Triton that is based on a 1960 T110 engine and 1961 slimline frame. The gearbox, which I've been told is Triumph, doesn't match the drawings in the 1961 manuals. Can anyone tell what type / year it is (see photo).

It's a pre-'58 type gearbox.

[mini-me]

its a  mix up of many parts and years.

You will be very familiar with lots of manuals soon

[A65rider]

Gents - thanks for comments. I've found the gearbox in the 1955 parts manual. Is there any way to tell exactly which one it is. The number stamped on top f the gearbox is 70912. Rgds

[L.A.B.]

As I understand it, the original engine and gearbox numbers didn't match, and although the VMCC or TOMCC may be able to tell you what year/model the gearbox is from, after around 60 years the gear ratios may not be the same as when it left the factory.     

[mini-me]

I wouldn't worry over much about it, Triumph gearboxes of that era are much of a muchness.

Have you a problem with it?

[A65rider]

Not really, at present the gear lever is reversed for the rear set foot pedal. This gives 1 up and 3 down. I prefer 1 down and 3 up as per my BSA A65. Someone mentioned that the gearbox may have a reversible quadrant or whatever so that is why I wanted to pin down the exact model aswell for any spares I might need to get in the future. Rgds

[mini-me]

all bearings and bushes are easily availiable, the actual gears should not give much bother. The guts are interchangable over many years, given a bit of common sense, selectors wear the worst, but pretty long lived.
I have a feeling a reversable camplate may once have been an option. How rare, or if they exist I don't know.

Personally down for up  I found made for quicker gearchanges.

Have you consider a different rearset arrangement that would put the change as you want? rather than the simply reversed lever?

The long kick start looks to be off a later unit 650, but that cotter should be the other way round, and its too long, worth checking, if its a soft crap one it'll give trouble.

[L.A.B.]

The long kick start looks to be off a later unit 650, but that cotter should be the other way round

Not in a unit kickstart lever.