Originally Posted by Laird Scooby (Post 2738488)

I suspect it was removed while being restored and wasn't found while refitting things so was forgotten about - a bit like the headlight earths!

Hopefully as simple as that, fingers crossed anyway! :thumbs_up:

Originally Posted by Underdrive (Post 2738498)

Or removed because of a tight or noisey cable?

Originally Posted by Ron Kwas (Post 2738509)

LS;

That is a length of speedometer drive cable...a Bowden Cable is push/pull cable used for transferring control or actuation force, and something quite different...picky, picky, picky...

The Speedometer right angle drive was added to models with OD so the cable could depart the drive pointing forward...in non-OD cars, cable departed straight, and just made a gentle arc, but in OD equipped cars, that would have put the departure further to the rear and made it necessitate a much longer cable, so they just added the right angle drive (which does cost more than simply increasing the length of the cable, I'm sure)...but from memory, it does get the cable further away from the exhaust system (I believe without the right angle drive, the cable runs right over the front muffler and gets cooked), so maybe that was a contributing factor for the change...

Cheers

Originally Posted by Ron Kwas (Post 2738509)

LS;

That is a length of speedometer drive cable...a Bowden Cable is push/pull cable used for transferring control or actuation force, and something quite different...picky, picky, picky...

Originally Posted by Othen (Post 2738511)

... maybe you are right, but when I looked at it I couldn't help thinking how Saabesque (not a compliment) an engineering solution it was (compared with extending the cable a bit and routing it via a gentle arc).

:-)

Originally Posted by Laird Scooby (Post 2738531)

Sorry Ron, if you're going to be picky, picky, picky................

"The potential of the Bowden cable and associated brake was not to be fully realised until the free-wheel sprocket became a standard feature of bicycles, over the period 1899-1901, and increasing numbers of applications were found for it, such as gear change mechanisms. Importantly in 1903, Hendee developed the twist-grip throttle using a similar cable for his 'Indian' motorcycles. Its lightness and flexibility recommended it to further automotive use such as clutch and speedometer drive cables. "

That comes from the second paragraph of the section entitled "History" from this :

https://en.wikipedia.org/wiki/Bowden_cable

As such, here in the UK (can't comment on the USA as there are myriad different terms for automtive parts alone and we won't even mention "fanny packs"!) speedo drive cables are generally referred to as Bowden cables. Also while at school and first "officially" introduced to Bowden cables, they were described as being a flexible drive shaft with a secondary use as push-pull cables such as those for brakes. Looking at the history i can see both would apply and also how they were likely to have become more popularly known as speedo cables in the UK as opposed to any type of cable that transmits motion.





Also very Triumphesque Alan, they used similar on the GT6, Spitfire etc when OD gearboxes were fitted, usually Laycock units similar to what Volvo used. The right-angle drive units suffered failure in Triumphs causing dead speedos and given the appearance of that one i'd say it would be reasonable to suspect and maybe even assume it's the same or a very similar unit.

The idea is exactly as Ron suggests, to reduce the arc in the speedo cable due to going further to the back of the OD unit. :thumbs_up:


*** EDIT *** Just had a quick look on fleabay and found this, certainly similar in appearance :

https://www.ebay.co.uk/itm/202260280230

None listed for Volvo that i could find but these other options came up :

https://www.ebay.co.uk/sch/i.html?_f...e+speedo+drive

Might be worth checking the angle drive actually functions and investigating the most likely replacement if not.

Originally Posted by Laird Scooby (Post 2738531)

Also very Triumphesque Alan, they used similar on the GT6, Spitfire etc when OD gearboxes were fitted, usually Laycock units similar to what Volvo used. The right-angle drive units suffered failure in Triumphs causing dead speedos and given the appearance of that one i'd say it would be reasonable to suspect and maybe even assume it's the same or a very similar unit.

The idea is exactly as Ron suggests, to reduce the arc in the speedo cable due to going further to the back of the OD unit. :thumbs_up:


Might be worth checking the angle drive actually functions and investigating the most likely replacement if not.

Originally Posted by Othen (Post 2739763)

I'll probably get Delores back to work on for a few days towards the end of this week ('Janet' says some parts have arrived), so I'm starting to turn my thoughts towards what I'll do this week:

https://i.imgur.com/VOvzNdwh.jpg

a. Take the speedo right angled drive off: see if the dinky Bowden cable thing is broken and if the unit turns. If not try connecting the cable direct into the gearbox as Paul did above (I don't think as a permanent solution, but to prove the rest of the system).

b. Check the impedance of the fuel gauge from the sender wire (should be 58 ohms plus a bit for the return cct), if that looks okay then ground out the sender wire via a 20 ohm resistor to replicate the sender mechanism and see if the gauge registers full.... if it does pull the sender unit out and see if it is stuck.

c. Fit the new rubber washer under the oil filler cap and see if it stops that pesky oil leak... also give the engine a good clean with Gunk and the pressure washer top and bottom. If the oil leak is fixed change the oil to 20W50 mineral.

d. Have a go at taking the exhaust apart and re-aligning it. This will be a cheap win if it works... if not 'Janet' may well have to stump up for a new exhaust :-).

e. Fix both door handles and the driver's side window winder (new handles and omega clips have arrived).

If all that goes well I may treat myself to a beer at the weekend :-)

:-)

PS. One more thing: Delores doesn't have any wing mirrors fitted - which looks marvellous but isn't safe on the road. 'Janet' has obtained some - but I'm very scared of drilling holes in the beautiful doors to fit them. I may need that beer before I pluck up enough courage!

Originally Posted by john.wigley (Post 2739779)

Morning, Alan; apropos door (wing) mirrors. Many years ago, clip-on mirrors were available, thus avoiding the need for any drilling - are they still? I recall having some on an early 144 that was not fitted with either door or wing mirrors.

They might be an acceptable compromise.

Regards, John.

Originally Posted by Laird Scooby (Post 2739803)

Sounds like you've tasked yourself with several fiddly jobs there Alan! Not sure if it's any help but i've linked to clamp-on mirrors below.

Are the mirrors "Janet" has obtained for door or wing fitting? Some are suitable for both but generally the wing fitting ones have a single hole and a large nut on the underside.
Wing mirrors would be nice but not as convenient to use as door mirrors although the former would be more "period" than the latter.

https://www.europaspares.com/quarter...r-picture.html

Are those the ones you're thinking of John? :thinking:

Originally Posted by john.wigley (Post 2739826)

The very same. They've gone up a bit, though!! :regular_smile: J.