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G3WO Dip Switch / Blank

Posted: Fri Mar 03, 2023 12:19 pm
by stevetemple
Can anybody tell me which dip switch I should be using on my 1940 G3WO? I assume it should be the round body type with the strap over the top, should it have a round or diamond shaped lever? Also, does anyone know if the clock blanking plate on the tank instrument panel is still available anywhere?
Steve

Re: G3WO Dip Switch / Blank

Posted: Fri Mar 03, 2023 12:41 pm
by Andy.S
Here's the link to original parts list no pictures unfortunately which isn't very helpful but the correct parts would be painted or dull plated not chromed i would have presumed , perhaps with the part numbers listed you can find pictures of the items you need.
It may help track down the correct items if still available.

http://archives.jampot.dk/book/Spares_l ... _C5247.pdf

Re: G3WO Dip Switch / Blank

Posted: Fri Mar 03, 2023 2:33 pm
by Rob Harknett
May I suggest you first read the parts list introduction. You will read there are 8 or more different finishes. All part numbers have a prefix. You will soon get to the table prefix letters and what they refer to. For a few years part numbers gave for example e = it fits on the engine. last 2 digits of a year = Year of introduction. G12 smallest model it fitted, prewar G12 was a 250 ohv Rob H

Re: G3WO Dip Switch / Blank

Posted: Fri Mar 03, 2023 2:42 pm
by Rob Harknett
The last illustrated prewar parts list was 1935. Some one drew some very nice drawings of OHV top end parts I think were for 1938 onwards. First year square timing covers became rounded

Re: G3WO Dip Switch / Blank

Posted: Fri Mar 03, 2023 4:15 pm
by SPRIDDLER
Rob Harknett wrote: Fri Mar 03, 2023 2:42 pm The last illustrated prewar parts list was 1935. Some one drew some very nice drawings of OHV top end parts I think were for 1938 onwards. First year square timing covers became rounded
There's a drawing of the top end with OHV valve ass'y here:

http://archives.jampot.dk/editorial/War ... h_1940.pdf


If you haven't seen the Lucas illustrated catalogue for 1936 - 1957 there are dip switches on page J3 here:

http://archives.jampot.dk/technical/Ele ... 6-1957.pdf

Re: G3WO Dip Switch / Blank

Posted: Fri Mar 03, 2023 7:43 pm
by stevetemple
That is an amazing catalogue, I found the dip switch eventually on page 182. So it is one of the round bodied switches with the diamond shaped lever. Thanks very much.
Does anyone know where I might get the blanking plate that replaced the clock on the fuel tank panel? Is it still available?
Steve.

Re: G3WO Dip Switch / Blank

Posted: Fri Mar 03, 2023 11:53 pm
by Duncan
stevetemple wrote: Fri Mar 03, 2023 7:43 pm Does anyone know where I might get the blanking plate that replaced the clock on the fuel tank panel? Is it still available?
They do turn up every so often at jumbles or on eBay, a number of different makes will have used them, Draganfly are probably out of stock of the ones with writing https://draganfly.co.uk/shop/240162/8-d ... /#5251-31B but appear to have plain ones https://draganfly.co.uk/shop/69486/blan ... t-writing/ , or if you fancy DIY: http://archives.jampot.dk/technical/Do- ... _Plate.jpg

Re: G3WO Dip Switch / Blank

Posted: Sat Mar 04, 2023 9:39 am
by jackstringer
If you are referring to this
Screenshot 2023-03-04 at 09-28-56 untitled - Lucas___Full_Motorcycle_Accessory_Catalogue_1936-1957.pdf.png
then I can confirm I have the same one on a 1961 Dutch Army Matchless. It's chromed, just with a few layers of paint on it.

Re: G3WO Dip Switch / Blank

Posted: Sat Mar 04, 2023 10:15 am
by stevetemple
Thanks Duncan, I will keep Draganfly in mind if I can't find one with writing. I am going to the jumble at Shepton Mallet later in the month so I will try there. Were they originally brass?

Hi Jack, I believe the correct one for 1940 was 31482 without the horn button and with the strap that goes over the top. Looking at the parts book it definitely had a seperate horn button. Same style lever though. It is on page 182 of the catalogue.