Author Topic: A7 Shooting Star headlamp shell  (Read 834 times)

Offline chrisannesam

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A7 Shooting Star headlamp shell
« on: 01.07. 2017 07:12 »
I hope someone can help me on this. The VRD says I have a May 1956 A7SS. I understand that in 1955 the headlamp shell had a special tubular grommet (19-535) passing around the speedo cable through two holes. This was changed in 1956 to a cutout shell. But what is the correct pattern of the cutout? Anyone know?

BSA SS A7 1956
Triumph T120R 1967
Velocette MAC 350 1956

Offline chotus52

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Re: A7 Shooting Star headlamp shell
« Reply #1 on: 19.07. 2017 07:35 »
Hi Chrisannesam, here's a photo of my 1955 headlight. It may or may not be of any use to you
55 GF s/a

Offline chrisannesam

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Re: A7 Shooting Star headlamp shell
« Reply #2 on: 19.07. 2017 07:54 »
Thanks chotus52. Unfortunately, the shell changed in 1956.

BSA SS A7 1956
Triumph T120R 1967
Velocette MAC 350 1956

Online trevinoz

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Re: A7 Shooting Star headlamp shell
« Reply #3 on: 20.07. 2017 07:13 »
Chris,
Why do you say that the headlight shell changed in 1956?
According to the Lucas catalogue, the same body was used from 1955 - 57.
The headlight was changed for the 1958 model to the nacelle type which I guess you could say it is cut away in the back.
I have only ever seen two types of headlight body to suit the cowl, the 1953 - 54 with the underslung pilot and the one pictured by Chotus.

Offline chrisannesam

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Re: A7 Shooting Star headlamp shell
« Reply #4 on: 20.07. 2017 07:56 »
Hello Trevinoz. Thanks for your reply. The parts manual has two different shells listed 19-526 with underslung lamp up until 1956 and 19-535 after 1956. In discussions with Dragonfly.co.uk and a local BSA chap this was also supposed to coincide with the speedo tube being dropped and a cut out used instead. My bike currently has a cut-out but it is home made and I remain unconvinced it is correct in shape or even factory fitted. The bike was assembled from a basket case of parts and there are several bits that are wrong that I know about... Cheers, Chris

BSA SS A7 1956
Triumph T120R 1967
Velocette MAC 350 1956

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Re: A7 Shooting Star headlamp shell
« Reply #5 on: 20.07. 2017 12:17 »
I don't think Draganfly are correct. I have both underslung (a spare) and non underslung ss700 type (on the bike) headlight shells, and both have the same rubber tube for the speedo cable, and no "cut out".

Note, I'm not exactly sure what is meant by a cut out, but a largish hole is made in the shell if the separate switch and ammeter panel is fitted.







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1956 A10 Golden Flash (1st finished project)

1949 B31 rigid “400cc hot rod” (2nd finished project, + favourite bike)

GL1800 Goldwing, well, the wife likes it

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Re: A7 Shooting Star headlamp shell
« Reply #6 on: 20.07. 2017 22:23 »
Chris, there you have your answer.
There are two different shells but the underslung was only used until 1954.

Offline chrisannesam

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Re: A7 Shooting Star headlamp shell
« Reply #7 on: 21.07. 2017 07:01 »
Thanks guys. So as per the parts manual, my bike (1956) should have no pilot (up to 1955) light or grommet (up to 1955). I'll plan for a slot cut out as in the pic with the pilot light. I see no other hole for the wiring loom so I assume this comes in the same slot.
The attached is maybe what I should be aiming for? (without the homemade hole in the middle).
Cheers, Chris

BSA SS A7 1956
Triumph T120R 1967
Velocette MAC 350 1956

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Re: A7 Shooting Star headlamp shell
« Reply #8 on: 21.07. 2017 08:29 »
Thanks guys. So as per the parts manual, my bike (1956) should have no pilot (up to 1955) light or grommet (up to 1955). I'll plan for a slot cut out as in the pic with the pilot light. I see no other hole for the wiring loom so I assume this comes in the same slot.
The attached is maybe what I should be aiming for? (without the homemade hole in the middle).
Cheers, Chris

I'm still puzzled as to why you need a slot and/or cut out? Only a few wires need to go into the headlight shell (switch and ammeter being outside of it) and these wires will easily fit through a small hole maybe 10mm diameter (with grommet fitted to protect the wires). This could be the hole you think should not be there *dunno*

Note rightly or wrongly I DO have a pilot light on my 56, not the underslung type, but a separate small bulb fitted in the reflector.

Edit: I've re read the earlier posts and what you called a tubular grommet, is present on my 56, exactly the same as it is on the shell with the underslung pilot light, and as the pic posted by chotus52.

My guess (others to confirm/deny) is that all the "cow pat" nacelle models need to have the speedo cable passing through the headlight shell, whether they have the underslung pilot or not.

I'm not sure how the speedo cable is routed on the later nacelle models.

On models with NO nacelle eg those with "ears" on the shrouds, I would have thought there would also be no need to pass the speedo cable through the headlight shell. I guess this would also probably apply to models with rev counters?



New Zealand

1956 A10 Golden Flash (1st finished project)

1949 B31 rigid “400cc hot rod” (2nd finished project, + favourite bike)

GL1800 Goldwing, well, the wife likes it

KTM 950 ADV, cos it’s 100% nuts

1952 Armstrong Siddeley Whitley for rainy days (with wife)

Offline chrisannesam

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Re: A7 Shooting Star headlamp shell
« Reply #9 on: 21.07. 2017 08:57 »
Thanks for the reply. I'm not sure what is 'correct' now. :-)
The slot or grommet is, as you say, for the speedo cable. My bike does have the nacelle (cow pat) as in pic.
Cheers,
Chris

BSA SS A7 1956
Triumph T120R 1967
Velocette MAC 350 1956

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Online Greybeard

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Re: A7 Shooting Star headlamp shell
« Reply #11 on: 21.07. 2017 15:34 »
My '55 has the same setup as KiwiGF. I posted some pictures of my headlamp a few months ago. I'll have a search to see if I can find them.


UPDATE: See pics

Offline chrisannesam

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Re: A7 Shooting Star headlamp shell
« Reply #12 on: 21.07. 2017 18:39 »
Thanks Greybeard. I did see your great pics already. Your bike is as per the parts book.  However, the headlamp shell arrangement apparently changed in 1956 which is the year of my bike... I'm thinking it's exactly the same just no grommet tube and a pilot light (not underslung).
Chris

BSA SS A7 1956
Triumph T120R 1967
Velocette MAC 350 1956

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Re: A7 Shooting Star headlamp shell
« Reply #13 on: 22.07. 2017 02:06 »
Chris, it didn't change in 1956.
Pilot lights were fitted in the reflector from 1955 after the demise of the underslung pilot.
The one on ebay is exactly what you need.