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Motorcycle Discussions => British Bikes => Topic started by: Tony39 on May 10, 2011, 01:28:00 PM

Title: Unidentified gearbox
Post by: Tony39 on May 10, 2011, 01:28:00 PM

Can anyone identify this gearbox?

Title: Re: Unidentified gearbox
Post by: yebbut on May 10, 2011, 03:11:35 PM

looks like C11 C10 to me

Title: Re: Unidentified gearbox
Post by: Tony39 on May 10, 2011, 07:07:52 PM

I have a C11 gearbox and it's not that.  Is a C10 different?(http://)

Title: Re: Unidentified gearbox
Post by: R on May 10, 2011, 11:17:36 PM

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.

Title: Re: Unidentified gearbox
Post by: Tony39 on May 15, 2011, 05:32:54 PM

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.

Title: Re: Unidentified gearbox
Post by: chaterlea25 on May 15, 2011, 06:45:06 PM

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

Title: Re: Unidentified gearbox
Post by: Rex on May 15, 2011, 09:14:48 PM

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

Title: Re: Unidentified gearbox
Post by: yebbut on May 15, 2011, 10:14:59 PM

yep Triumph pre unit slickshift

Title: Re: Unidentified gearbox
Post by: Tony39 on May 17, 2011, 09:16:29 AM

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.