Headlight Bulb

[Stuart Joseph]

Good evening Alfie.
I am interested in the type of headlamps fitted to your RN. Currently I am preparing a series of articles on A7 lighting and I have found that the early RN's had Lucas R47's fitted with 'Lucas Graves' double filament dipping headlamp bulbs later being changes to the Lucas type 35/32 still fitted with the 'Lucas-Graves' bulbs and both with 'reeded' glasses.
These bulbs are still available but are more usually known as 'Bosch' bulbs. They have a larger diameter metal body and small and larger rectangular lugs (unlike the round pins normally fitted to bulbs), the purpose of these lugs is to ensure that the bulbs are inserted the correct way up to give the dip/main orientation.
The bulbs that have been identified as available would fit the 'scuttle' lamps (raised in an earlier posting) although there is no facility for focussing them.

Can't get the 'add attachment to work so no photo.

Regards from Staffordshire - the creative county.

Stuart

Stuart,

I look forward to your articles on the Austin Seven lighting.

As I wrote in an earlier posting -

The Lucas SM 3 panel has 'H'ead and 'S'ide headlamp switch position, which I believe uses the two wires running to each Lucas Headlamp R510, which is fitted with a single two filament two pin bulb- I presently use 6 volt BA15d 18W 5W Stop and Tail (probably should use BA15d 21W 6W).
  The Lucas SM5  panel also has 'H'ead and 'S'ide beam switch position which connects the two wires to two separate bulbs in the Lucas Headlamp R47 - I use 6 volt BA15s 21W and BA15s 6W bulbs. The main bulb has a three position seating but as mentioned, with present bulbs this doesn't seem to help very much with focus.
The early CAV etcetera headlamps didn't have a high and low beam - only full on or dim (later full on or sidelight).
  The earlier wiring diagrams showing the CAV switch panel are deceptive - the circuit from the dynamo only shows a single line but there are in fact two end wires shown, as with the headlamp circuit, so I believe there are in fact two wires to each headlamp.
  The CAV switch panel has a headlamp switch and a dim switch but never having studied one don't know how this operates. 
  The Lucas SM3 switch panel simply switches feed between the main and secondary filament in the bulb.   

Cheers, Tony.

Good morning all. Reference to one of my earlier posts I must have been having a 'senior moment' when I said that R47 reflectors did not have the facility to focus the bulb. Of course they do and I have attempted to post a photo which shows this and my solution to obtaining a good earth. I use a 15mm fuel pipe clip which has the facility to add a cable 'eyelet' under the screw head.

Regards from the creative county - Staffordshire.

Stuart

---

Posting photos. Can't get the attachments facility to work. No blue header that says 'add attachment'. 'Clear' 'Add attachment' button does not bring up 'new attachment' nor 'choose file'.

Frustrating!!!!!!!!!!!

Stuart