Can someone help me with the type of cable, fittings and run of the cable on a 1931/32 Box saloon?
I believe that the cable comes up through a hole in the middle of the steering column support.

Location: Near M1 Jtn 28

E-mail sent

Location: Sarf of Frogland

This is my RL, but I would have thought RL/RM/RN all the same

It just happens I've come to work in it today

My 1932 RN uses the same brackets as in the pictures, but is made up of a solid steel rod and terminates with a knurled brass knob, instead of the ring pull arrangement. Any other variations?
David Page.

Location: Notts

Many thanks to Reckless, Hedd,& David for the replies.
I see that the hole in the steering column support bracket is used for the pull starter on Ruby's etc. but I'm assuming that it could have been used for the choke on early RNs (mine was registered on 31 December 1931).
There are two holes where the little bracket should be on the bulkhead but no bracket; it shouldn't be difficult to make one though.

Location: Near M1 Jtn 28

New choke brackets are available from the usual sources Brian.

On fathers RP (1934), the starter pull comes out the top side of the steering bracket. Note my choke on the RL comes out of the side.

The choke on the RP is somewhere near the pasengers knees.

I couldn't make the choke on a sidedraft work with the original set up on the RL.

p.s.

My pics assume you have the correct engine/box/carb for your RN. If you have a later crankcase with the starter facing backwards (and thus need a cable for the starter) and a side draft carb, what you really need to know is how it was done on an RP.

Thanks Hedd, my RN is 1931 but with a 1932 engine, 3 speed crash box and a starter motor that comes back into the passenger side so I think its pretty standard. The choke on the carburettor is in the same place as it is on a 22FZ and the starter is a button mounted on the side of the transmission tunnel.
The handbook shows the "air shutter wire" coming under the dash to the right of the steering column but there is no detail about how the cable or rods are run.

Location: Near M1 Jtn 28

Brian,
The route of the choke cable is as shown in Hedd's photos.
The swivel bracket is the angled type as shown and is available from Willie Mckenzie as mentioned. I think the cable should have a ring pull just to the right of the steering column bracket as shown.
As the cable passes diagonally from the bulkhead bracket to the ring pull it originally passed through a leather guide/friction pad as shown in this photo. This was taken of an unrestored RL Saloon.


On inspection you may find evidence of the original rivets or at least the holes for them on your car. I did on my RL.

Bit of an old thread and most of the photos have disappeared. But I am trying to understand how the original ring pull type choke worked I see that there is a piece of leather that provides friction. So you pull the choke and the leather retains the cable but what do you do to disengage the choke or is the part were the ring pull is and leather a rod not a wire?

Location: Dorset

The wire (like a pushbike brake cable inner)is rigid enough to be just pushed in, assisted by the spring on the choke spindle.

Location: Near M1 Motorway Jtn 28

Because the RN saloon 22FZB choke is hinged at the top of the intake instead of in the centre of the intake on later carburettors the choke can only be used to start the engine once it fires it must be opened otherwise the engine suction will hold it closed and choke the engine to stop. If you look on the crankcase ventilation thread of 24 February 2016 there is a photo of the under bonnet choke linkage on one of our RNs where I've used stainless welding wire. There are 2 types of swizel tree one for early cars and the other is for RNs, make sure you specify what car it is for Brian. I'll have to take some photos of the steering column end of the choke control.
There is something missing from that photo of that choke linkage leather support Bryan, it also forms a support for the oil pressure gauge pipe.

Thanks for the information Dave, this thread is an old one and I obtained the correct swivel and it works but I am missing the leather support so the choke will not stay closed unless held so.
I'd be most grateful for pictures of the steering column end of the linkage (although I've never had to use the choke to start!)
Brian

Location: Near M1 Motorway Jtn 28

My RM has a keyhole slot for the choke wire, and the wire returns for about an inch, allowing it to drop and be held in full choke position; the engine suction does not hold it in this position!
I have no idea whether this is original, but it works well.
Rather than go out into a cold garage to take a photo, here's a rough sketch to show what I'm describing:

Mike thanks for the images that makes sense I'll have a go at your solution.

Location: Dorset

Wether original or not, that looks a good idea Mike. Does the wire come out of the bracket holding the steering column or is it a separate piece?
Brian

Location: Near M1 Motorway Jtn 28

Sorry Brian, I drew the RK-style bracket so that the arrangement was clearer; mine goes through the steering column bracket.

Dave Mann writes:

Hi Ruairidh
Please would you post the attached photos under the above headings on the Friends forum, regards Dave Mann

Many thanks for the pictures Dave & Ruairidh, they are very helpful. I'm just off to see if I can find any holes!
Brian

Location: Near M1 Motorway Jtn 28

Please excuse me for offering my two penny worth, but I am not sure it's a good idea to have the oil pipe pass through the leather strap/clip, what ever it's called ! Because the choke cable will eventually wear through the copper. 😖
Joe

Location: Suffolk

Surely it would take at least 80 years regular use for the wire to wear through the pipe

Cheers, Tony.

Location: Melbourne. Victoria, Australia.

well, the more you look the more you see. Sneeky David has a 4 speeder in his RN. A pipe to **** in while driving down the road and a little core plug changing hole.

Hedd you have hawks eyes to spot the 4 speed box, what you can't see is it's a Andrew Bird box saloon close ratio. That pipe is a map reading light as the RN doesn't have a dash light. However due to the scarcity of public conveniences we have a solution behind the drivers seat. When I got the car there was a very roughly cut hole there, as I suppose many Sevens had, so after tidying it up I made a cover plate.
I was shown this arrangement on a unrestored RN many years ago and the choke cable isn't in contact with the pipe, as the strap doesn't support the pipe I assume it's to stop the pipe's lateral movement.