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Lucas ammeters

Hi guys,
I'm a bit puzzled... Is there a difference between a Lucas CZ27 and a CZ11 if so, what??
Also, would it be appropriate to fit either to a 1943 bike?
Many thanks

email (option): fozzie001@hotmail.com

Re: Lucas ammeters

Hi Ian

I think the CZ11 is the pre war domed glass version in use up to 1939, a 1943 M20 should have a flat glass CZ27, hopefully someone can confirm that.

Rob

email (option): robmiller11(a)yahoo.co.uk

Re: Lucas ammeters

The Lucas catalogues are quite hard to follow, but I think you're right Rob. The CZ27 seems to be from 39/40 onward (CZ= Center Zero) The other common pre war ammeter is the model BM4 but I thinks it's 2". Ron

email (option): ronpier@talk21.com

Re: Lucas ammeters

Lucas were masters of supersession and it's not always clear what they did and why. Sometimes part numbers changed with no apparent alteration to the component...and other times the part changed substantially but the name didn't.

My 11/39 Ammeter with domed glass and mica illumination window is marked 'CZ27'.

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Re: Lucas ammeters

Same here, i have a 1939 CZ27 with a domed glass and mica window. I have just fitted a 1941 CZ27 to a mates bike and that had a domed glass. Never seen one as late as this with the domed glass though.

Tim W

email (option): t.j.walker@btinternet.com

Re: Lucas ammeters

Here's a flat glass CZ27 in a NOS DU42 headlamp in SCC No.2 Brown, it looks like its dated 1/44.

Rob

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email (option): robmiller11(a)yahoo.co.uk

Re: Lucas ammeters

By way of comparison, this is the face of the '39-dated instrument with domed glass and illumination slot.

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Your panel is intersting Rob as it confirms the use of SCC No.2 into 1944 which is what we would expect, it casts a lot of doubt on how many British vehicles in June 1944 would have been Olive Drab - Not many as I understand it but amongst restored vehicles, it has taken over.

Re: Lucas ammeters

Cz11.L7 is shown in the 35-39 Lucas catalogue
CZ 14 DJ has grub screws and a special flange 10 amp
CZ 27 L ivory face
CZ27.L1 black face dome d glass
CZ.27.L2 white face coil ignition

My 35 XO has a CZ27.L1

BM is a 2” as stated

email (option): Darrenacartwright@yahoo.com.au

Re: Lucas ammeters

Hi ,
Although I don't have a WD bike I have been reading your comments re ammeters.
I have a civilian Norton from 1939
Is there any cash Ex that one of you guys might have a suitable ammeter to sell?
I'm in Australia
Cheers
Greg

email (option): gblades@optusnet.com.au

Re: Lucas ammeters

But wich one do you exactly need, Greg ?

Re: Lucas ammeters

Rik
By way of comparison, this is the face of the '39-dated instrument with domed glass and illumination slot.

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Your panel is intersting Rob as it confirms the use of SCC No.2 into 1944 which is what we would expect, it casts a lot of doubt on how many British vehicles in June 1944 would have been Olive Drab - Not many as I understand it but amongst restored vehicles, it has taken over.[/quote]Someone was talking to a veteran who said he remembered most of the vehicles being brown on D-Day.

email (option): horror@blueyonder.co.uk

Re: Lucas ammeters

My NOS DU42 with flat glass has the same color as yours Rob. I think mine is 1943 dated but I'll have to check;

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Regards,

Sven

email (option): snvosselman@gmail.com

Re: Lucas ammeters

Sir please tell me if it is for sell , or no than please tell me if anyone selling and i can buy please

email (option): Rajratan13@gmail.com

Re: Lucas ammeters

I have restored lots of cz27's the last years..mostly with broken needles and faded dialfaces..seen them with burned coils .but i always could repair them..even i had some that are totaly unscribted..but it looks like they are even when broken not easy to find anymore these days..
So if people have broken ones laying in a mostly forgotten box.i would be interested in them...they are worth it to restore them.

Roy

email (option): roy206@hotmail.com

Re: Lucas ammeters

Hi Roy
Are you back in the ammeter repair business again ?

Br
Job

email (option): Jonnyob1atgooglemail.com

Re: Lucas ammeters

I never stopped with that john.
Just made a couple dialfaces and pointers for them

email (option): roy206@hotmail.com

Re: Lucas ammeters

hallo Roy,

looking for parts ans info to rebuilt my g3Wo 2 inch BM 4 L33 ammeter, what thickness copper wire is needed and of what total lenght. i also in the process of making a face and needle.
regards
kalli

email (option): kalli.giannios@gmail.com

Re: Lucas ammeters

1.2 mm thicknes coeted copperwire.the length is not a issue..was it already a 8 amp meter, then make the same windings as the old one .solder it on place to the terminals but give it a good look that the windings are as close as can to the shaft were the pointer is mounted.
A correct dialface you can order from argentina..look on ebay for smiths chronometric parts and you will find stuff from him..his name is there nortondominator.
If you need a new pointer..i can help you with that,just mail me if needed

Roy

email (option): roy206@hotmail.com

Re: Lucas ammeters

yes it is a 6V, 8-0-8 BM4 L33 carcass, it is original to the bike. was broken and all the vital internals gone. cleaned it throughout and repaired what was there so got it to a stage it can be rebuild.
so no original wire to take measurements from, i estimate total leght about 250mm 3- 5 turns of wire and test it and adjust. i intend to raid the insides of a cheap indian one. do i need a magnet to make it return to 0?

Any ideas what the L33 variation stunds for? i assume its a lighting window orientation difference?

thank for the info and the offer roy, i ll hit you up.

cheers

kalli
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email (option): kalli.giannios@gmail.com

Re: Lucas ammeters

That is not much to restore....
I just looked at ebay..there is a bm4 8 amps on ebay uk for 40 gbp..i think you could better buy that one....

email (option): roy206@hotmail.com

Re: Lucas ammeters

This is from the 1939 Lucas CAV catalogue and the L33 is not shown. It may well be that the only difference from a pre-war version was a dull chrome rather than bright chrome bezel.

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