[TR] tr3 gear box

[Geo Hahn]

Frank -

Here's a nice exploded view that may help ID the parts you are seeing:




https://mossmotors.com/triumph-tr2-3-4/clutch-gearbox-drivetrain/gearbox-driveshaft/internal-gearbox-tr2-3a

Geo


On Tue, May 29, 2018 at 1:07 PM, Frank Fisher <yellowtr3 at yahoo.com> wrote:

> gear boxes are not my strongest point.
> only ever took one apart more than 40 years ago.
> so buddy crashed his box and has chipped some teeth.
> as we have done 3 toyota conversions we had some old boxes in good shape
> lying around.
> pulled the top off to be sure they were all there.
> at first glance i saw what i assume is first gear ring. top shaft rear
> most gear. straight cut gears. no synchro.
> took a look..oh bugger its missing 2 teeth.
> opened up the second box and huh! same gear missing 2 teeth.
> rotate the shaft and it has 2 teeth machined off every 8 teeth.
> go back check the other box same thing.
>
> so can some one enlighten me as to why they are missing 2 teeth every 8?
>
> thanks
>
>
>
>
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