Unidentified gearbox

[Tony39]

Can anyone identify this gearbox?

[yebbut]

looks like C11 C10 to me

[Tony39]

I have a C11 gearbox and it's not that.  Is a C10 different?

[R]

Can you do a direct end-on view of this gearbox ?
Bikes are usually viewed / recognised square-on in profile, angular views make it a little tougher ...

It does look something BSA (Triumph Ariel)  though, not too big by the size of the mounting studs.

Cheers.

[Tony39]

I thought the angled approach gave more detail.  The oil filler is via a slotted flush screw in the top of the casing.  Much of it looks BSA including clutch adjustment but if so, which one?  It is bigger than a C box and almost as big as an A/B.

[chaterlea25]

Hi All,
The box is not like any BSA I have seen
I thinkits Triumph??? because of the shape of the clutch adjusting slot
Are there any numbers / letters on the case? even casting numbers

Regards
John

[Rex]

It's a Triumph Slick-shift era  'box, surely?

[yebbut]

yep Triumph pre unit slickshift

[Tony39]

Having now looked at some early pre-unit Triumphs I'm sure you are right.  It may well be worth saving as the insides seem fine.

Many thanks.