1935 Rover 12

digcot65
Posts: 62
Joined: Sun Apr 19, 2020 1:34 pm

Re: 1935 Rover 12

Post by digcot65 » Tue Jun 23, 2020 9:03 am

Thanks but I was unable to find the original thread I still want to know what the extra lever is on the carb. There is a control knob on the dash to operate it,but the writing on the actual knob isnt clear Len

digcot65
Posts: 62
Joined: Sun Apr 19, 2020 1:34 pm

Re: 1935 Rover 12

Post by digcot65 » Tue Jun 23, 2020 3:16 pm

Hello I looked on the parts list for my Rover12 and the shaft that operates the mechanical fuel pump ,is just a straight rod .However I cannot remove it however I try ,when I pull on it,it feels as though there is a collar or bulb on the end, it just clonks against the crankcase wall which is strange.Since I am removing the old unused mechanical pump I need to remove this before fitting blanking plate for it to foul Len

digcot65
Posts: 62
Joined: Sun Apr 19, 2020 1:34 pm

Re: 1935 Rover 12

Post by digcot65 » Wed Jun 24, 2020 9:46 am

Hello ,why not answer the question now,to save me searching for the answer which I was unable to find Len

digcot65
Posts: 62
Joined: Sun Apr 19, 2020 1:34 pm

Re: 1935 Rover 12

Post by digcot65 » Wed Jun 24, 2020 10:13 am

Why not answer it now,to save me searching I was unable to find the answer the other day

RobHomewood
Posts: 192
Joined: Tue Oct 22, 2013 8:04 pm

Re: 1935 Rover 12

Post by RobHomewood » Wed Jun 24, 2020 11:12 am

Hi Len
I dont wish to add to your frustration but have you considered leaving the mechanical pump in place, just sealing off the ports? Might look more authentic? You could always look at it again when you have the sump off next

Rob

TonyG
Posts: 145
Joined: Mon Sep 07, 2015 4:38 pm

Re: 1935 Rover 12

Post by TonyG » Wed Jun 24, 2020 10:22 pm

Len, the long lever on the carb operates the hand throttle. It says ‘Throttle’ on the knob next to the one marked ‘ Mixture’. These two are used in conjunction with one another for cold starting and smooth running. You will notice that the long brass lever on the carb operates against the accelerator stop, thereby speeding up the revs if so required by opening the butterfly a little. The mixture is altered by moving the jet outwards. This allows more fuel past the shaped needle.

I hope that makes things clearer?

I looked at my spare engine and cannot see any reason why the fuel pump push rod on your car won’t slide out. I can only think that the early version is different in some way. As Rob suggested, maybe better to leave the old pump in situ.

Tony.
Tony Gilbert

P1 12 Tourer
P2 12 6 Light Saloon
Discovery 3
Discovery Sport

digcot65
Posts: 62
Joined: Sun Apr 19, 2020 1:34 pm

Re: 1935 Rover 12

Post by digcot65 » Thu Jun 25, 2020 8:50 am

I am unable to find a reply to my question on the carb. I want to know what the long vertical lever is for Please donr say you have answered it,just tell me Len

RobHomewood
Posts: 192
Joined: Tue Oct 22, 2013 8:04 pm

Re: 1935 Rover 12

Post by RobHomewood » Thu Jun 25, 2020 10:25 am

Dear Digcot65
This website thrives on mutual cooperation and friendly sharing of hard won knowledge by people who volunteer their personal experience. I am afraid that to me for one the confrontational tone of your last few messages is likely to put people off helping but maybe you did not mean to come over in that way............
Rob

TonyG
Posts: 145
Joined: Mon Sep 07, 2015 4:38 pm

Re: 1935 Rover 12

Post by TonyG » Thu Jun 25, 2020 3:53 pm

Len, if you look at my previous post on this thread you will see I have explained the purpose and operation of the hand throttle. I cannot do any more than explain it on both threads and assume you have missed the last one.

It can be frustrating sorting out how these old cars work but, as a rule of thumb, they are simple and robustly constructed and, while some bits can be baffling at first, I’m sure you will get the measure of it quite quickly. I’ve found that the best approach is to move on with the job and any questionable bits fall into place by the time you finish! I spent a bit of time looking at other cars and taking pictures to work out how my car went together. Not easy at present but, hopefully, the opportunity to attend shows will be upon us and you can look at some complete cars.

Good luck with your endeavours.

Tony.
Tony Gilbert

P1 12 Tourer
P2 12 6 Light Saloon
Discovery 3
Discovery Sport

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