Driving styles will vary a lot, of course. For "normal" driving, I leave
the OD off until I've reached cruising speed, then engage it.
But there is no hard and fast rule; you can shift with the OD switch on if
you like. I do occasionally forget to switch it off, and take off from a
stop with the switch on. In that case, first gear is non-OD (due to the
lockout switch). And if I shift fairly quickly into 2nd gear, it may not
have built enough pressure to engage the OD and so I'll get 2nd-direct for a
short time, followed by it shifting into 2nd OD on its own. But generally
it will have enough pressure stored, and so it will just shift smoothly into
2nd OD.
When I'm in a hurry, though, I use 2nd OD as well.
-- Randall
> -----Original Message-----
> From: triumphs-bounces at autox.team.net [mailto:triumphs-
> bounces at autox.team.net] On Behalf Of G.D. Huggins
> Sent: Tuesday, September 20, 2011 3:05 PM
> To: triumphs at autox.team.net
> Subject: [TR] TR4A - Driving w/Overdrive
>
> All,
>
> It just occurred to me that I do not really understand how to drive the
> car
> with the OD on.
> When I was driving it back in the 80's, it never worked, so I have no
> experience with it.
>
> I know you should not engage the OD in reverse, or first gear. In
> fact, there
> is an electrical safety that prevents it.
>
> When is it appropriate to engage/disengage the OD? Is there some
> recommended
> "sweet spot" for engaging/disengaging?
> Can you shift gears up and down with the OD engaged? Or do you need to
> disengage the OD before changing gears?
>
>
>
> Cheers,
>
> Guy D. Huggins
> 1965 Triumph TR4A
> CTC 63569LO
>
> Online project diary at http://www.genfiniti.com/triumph
>
>
> triumphs at autox.team.net
>
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