In a message dated 96-05-24 13:26:01 EDT, 74106.1335@CompuServe.COM (Bruce A.
>>Back in the good ol' days we modified a Volvo overdrive to work in 2nd,3rd
>>and 4th gears by a simple modification to the springs. This, coupled to a
>>close-ratio 'box, gave our rally car a 7-speed gearbox that had a gear for
>>situation. Anyone know if this can be done on the Triumph overdrives?
>That's exactly what the earlier A-type O/D does. You can engage O/D in 2nd,
>3rd, or 4th gears. That was changed with the J-type O/D so that it could
>be engaged in 4th.
> - BAK -
The only problem is that 3rd overdrive and 4th are almost identical. Also
2nd overdrive and 3rd are almost identical.
If you have different ratio spacing you can interspace the overdrive ratios
between the direct ratios and have a 7 speed box. The sequence would be 1st,
2nd, 2nd O/D, 3rd, 3rd O/D, 4th, 4th O/D.
BTW the J type works in 3rd and 4th. The switch is actuated in either
position (a least on my xmission).
Just my 4000 Lire (2 cents) worth
Dave (who needs 3rd O/D anyway?) Massey