Amazon: New (to me) 1963 Volvo 122

[Othen]

Originally Posted by Bob 1967

The Barge , not to be confused with DeBarge

Hi Bob,

I had to google DeBarge: a 1980s American disco band. Perhaps they were more popular in the RoI than in the UK, or maybe I need to get out a bit more?

:-).

Alan

[Bob 1967]

Originally Posted by Othen

Hi Bob,

I had to google DeBarge: a 1980s American disco band. Perhaps they were more popular in the RoI than in the UK, or maybe I need to get out a bit more?

:-).

Alan

To be honest I had to check Youtube to see if I recognised any of their songs.
Just one I vaguely recognised (Rhythm of the night).
The 80s for me was mostly Bowie tbh .

[Laird Scooby]

Originally Posted by Bob 1967

To be honest I had to check Youtube to see if I recognised any of their songs.
Just one I vaguely recognised (Rhythm of the night).
The 80s for me was mostly Bowie tbh .

It was Rhythm of the Night (~1985?) that was triggered in my memory cell when you first mentioned them Bob, thought they were a one hit wonder until i looked them up.

Still don't remember their other stuff though!

[Othen]

Note to myself: fit the OD inhibitor switch before the winter.

Alan

[dgbalfour]

Did you experience overdrive 1st?

[Othen]

Originally Posted by dgbalfour

Did you experience overdrive 1st?

Hi David,

No, I've been very good at remembering to switch out of OD so far, but the 1983 240 GLE I've just bought has an OD box which disconnects automatically when one changes out of fourth gear; that has reminded me that the OD inhibitor still needs fitting to Aunt Maud.



Alan

[dgbalfour]

Another 240 - is there a project thread, I've missed that development.

If I remember rightly the relays that operate the overdrive in the 240s do more than simply take the OD in and out when in 4th gear, they performs some sequencing. So if you'd been in OD 4th then drop to third, the OD will disengage as you'd expect, but when you re-select 4th the OD won't go straight back in and waits for the push-button to be operated.

The repurposed heated rear window switch leaves a lot to be desired in terms of ergonomics, and I considered converting GAM's high beam flasher to be the OD switch. As the flasher is a momentary type switch I would have needed a 240 sequencing relay. I think I found some new ones but was offended by the price.

[Othen]

Originally Posted by dgbalfour

Another 240 - is there a project thread, I've missed that development.

If I remember rightly the relays that operate the overdrive in the 240s do more than simply take the OD in and out when in 4th gear, they performs some sequencing. So if you'd been in OD 4th then drop to third, the OD will disengage as you'd expect, but when you re-select 4th the OD won't go straight back in and waits for the push-button to be operated.

The repurposed heated rear window switch leaves a lot to be desired in terms of ergonomics, and I considered converting GAM's high beam flasher to be the OD switch. As the flasher is a momentary type switch I would have needed a 240 sequencing relay. I think I found some new ones but was offended by the price.

I think you are right David, the arrangement is a little more sophisticated in the Barge (I've carried on the same project thread as the green car (the Royal Barge) starting here (post 3190 et seq)):

https://www.volvoforums.org.uk/showp...postcount=3190

... it sort of carries on from the RB story.

I think just adding the inhibitor to Aunt Maud with the re-purposed heated rear window switch will be fine - I quite like the switch, although I suppose if I forgot the switch off the OD and didn't notice the light when I changed out of fourth gear it would go to OD fourth on the way back up.

Both cars (GAM and the Barge) are in pretty good health (notwithstanding the normal 40-60 year old issues).

Alan

[Laird Scooby]

Originally Posted by Othen

I think you are right David, the arrangement is a little more sophisticated in the Barge (I've carried on the same project thread as the green car (the Royal Barge) starting here (post 3190 et seq)):

https://www.volvoforums.org.uk/showp...postcount=3190

... it sort of carries on from the RB story.

I think just adding the inhibitor to Aunt Maud with the re-purposed heated rear window switch will be fine - I quite like the switch, although I suppose if I forgot the switch off the OD and didn't notice the light when I changed out of fourth gear it would go to OD fourth on the way back up.

Both cars (GAM and the Barge) are in pretty good health (notwithstanding the normal 40-60 year old issues).

Alan

I can't remember if there's a limit/inhibit switch so OD only works in the 3rd/4th gear plane of movement on the gearshift or 4th only, if that has been bypassed then OD will remain until switched off. Hard acceleration in 1st or 2nd might damage it and certainly using it in reverse will. I'm guessing the repurposed HRW switch is to switch OD in and out, rather than act as an inhibitor?

[142 Guy]

A proper OD interlock switch fitted on an M41 is a normally open contact switch which only closes to energize the OD solenoid when the transmission is in 4th. At least on later M41 equipped cars the interlock only operates when in 4th gear. I seem to recall that some may allow operation in 3rd; but, I can't remember whether that was a Volvo or non Volvo application. On vintage Volvos, if the steering column / dash OD switch contacts are closed the OD will engage when you shift from 3rd into 4th. A not necessarily desirable feature if you are shifting up after you downshifted to pass a slow moving vehicle.

The later Volvos with OD use an electronically controlled relay configured as a latch to control the OD solenoid. The switch to operate the relay is a momentary contact switch and the relay uses the OD interlock switch on the the transmission cover as a permissive. When in 4th gear, operating the momentary contact switch will cause the relay to energize and stay energized putting the OD into operation. Hitting the button again or shifting out of 4th will cause the relay to de energize and the OD to drop out. Shifting back into 4th will give you 4th gear, not OD. To re engage the OD you need to operate the OD switch again.

All the details here including relay numbers and wiring diagrams

https://www.swedespeed.com/threads/a....408489/page-2

The latching relays are not particularly expensive. If you want to find a nice period correct momentary contact wand type switch to mount on the opposite side of the steering column - that is the expensive part. If you are OK mounting a pushbutton in the dashboard that will be cheap.