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Old 10th Apr 2019, 11:15 am   #1
60 oldjohn
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Default Ever ready No 8 battery scan needed.

As title, I thought there was a No 8 on this forum but can not find it. I need to print two off for a couple of batteries I am making.


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Old 10th Apr 2019, 2:09 pm   #2
Dave Moll
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Default Re: Ever ready No 8 battery scan needed.

By "no. 8" you don't mean a PP8 do you?

There are various battery scans, including several PP8, on the Wireless Set No. 19 web site.
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Old 10th Apr 2019, 2:23 pm   #3
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Default Re: Ever ready No 8 battery scan needed.

There's a picture (only) here: https://www.vintage-radio.net/forum/...11&postcount=9
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Old 10th Apr 2019, 2:33 pm   #4
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Default Re: Ever ready No 8 battery scan needed.

Lots of pics in Google images- probably enough views for a reasonable facsimile to be cooked up.


I like this one.....
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Old 10th Apr 2019, 6:04 pm   #5
60 oldjohn
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Default Re: Ever ready No 8 battery scan needed.

Thank you Bill and herald, that's the one.


No Dave, Its an AA style on steroids! and 3 volts.


I thought someone on this forum had a good scan archived.


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Old 10th Apr 2019, 6:49 pm   #6
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Default Re: Ever ready No 8 battery scan needed.

Chris at Vrat may be able to help, they have lots of battery scans.
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Old 10th Apr 2019, 7:05 pm   #7
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Default Re: Ever ready No 8 battery scan needed.

Quote:
Originally Posted by 60 oldjohn View Post
No Dave, Its an AA style on steroids! and 3 volts.
I was thinking more like
2 x sp11 on a diet
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Old 10th Apr 2019, 7:15 pm   #8
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Default Re: Ever ready No 8 battery scan needed.

'tis or at any rate 'twas, two U8s in a card sleeve.
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Old 24th Apr 2019, 8:40 pm   #9
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Default Re: Ever ready No 8 battery scan needed.

Did anyone locate a full scan? I have done a search for the battery under various brands and codes but they all seem to show the front of the battery. Was the rear a duplicate of the front?
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Old 24th Apr 2019, 10:26 pm   #10
60 oldjohn
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Default Re: Ever ready No 8 battery scan needed.

I have done a scan of one in bad condition, a friend is going to try and improve the image. I hope to post the result here in a week or so.


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Old 24th Apr 2019, 10:43 pm   #11
Paul_A_R
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Default Re: Ever ready No 8 battery scan needed.

Thanks. That would be great.

Paul
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Old 25th Apr 2019, 10:02 am   #12
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Default Re: Ever ready No 8 battery scan needed.

Perhaps a tad off topic, but hopefully still relevant, is the construction of a replica No8 battery.

Back in 2010 when a No8 battery I'd fitted into a signal injector in 1997 finally expired, I made a replica battery, but didn't scan the old one - I chucked it away so can't help with that. Initially, I made a replica No8 battery by using two LR1 1.5V alkaline cells, but having made that, I then realised that a single CR123A lithium manganese dioxide 3V battery, (widely used in cameras etc), which has a capacity of 1.55 Ah and a shelf life on ten years would be a much better bet.

I've attached some pictures of both versions below.

The description may be tedious but both replicas are simply made and the pictures should make things clear.

Version 1 - using two LR1 Alkaline cells:

A Number 8 battery had a diameter of 22mm and a length of 75mm. An LR1 cell has a diameter of 11.5mm and length of 29mm between contacts. Hence, two LR1s in series require a metal spacer of 11mm diam, 17mm in length to make up the 75mm total length of a No 8 battery. I used a piece of 11mm diam aluminium rod for that.

To get from the 11.5mm diameter of an LR1 to the 22mm diameter of a No 8 I used a length of 20mm O.D. plastic conduit, and inserted that into a length of 22mm O.D copper tube into which the plastic conduit is a snug fit. I then made a sleeve of rolled paper using PVA glue with an I.D of 11.5mm and an O.D. of 17mm to sleeve the LR1 cells to fit snugly into the 20mm plastic conduit.

Version 2 - using one 3V 123A lithium battery:

A 123A battery in approx. 16.5mm diam x 34mm long. It fits neatly into a length of 20mm O.D plastic conduit so doesn't need a rolled up paper sleeve - just the 20mm plastic conduit and the 22mm outer sleeve of 22mm copper tube. I used a length of dowel as a spacer, drilled to accept a 2BA brass cheesed headed screw to make up the total length of 75mm for a No8 replica. (An M4 cheese-headed screw would do just as well).

The copper tube sleeve is only needed if it's desired to have the exact diameter of a number 8 battery to which to apply as scanned label.

First pic is a replica No8 using two LR1 alkaline cells.
Second pic is the single 123A lithium battery version.
Third pic is the 123A version end on.
Fourth pic is the battery inside my 'Eston' signal injector.
Fifth pic shows that nine years on, the generator still shows a 3V p-p waveform so the 123A battery is still going strong.

Hope that may be of interest and help.
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Name:	Eston injecotr waveform 3V p to p..jpg
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Old 25th Apr 2019, 11:01 am   #13
60 oldjohn
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Default Re: Ever ready No 8 battery scan needed.

Hi David, Not a tad off topic, in my view, I needed two N08s, the two in the set were both swollen up. I realised the CR123A was the right voltage and would fit in the available space. Then I saw your post and another one from Howard. I have now made them. I hope to post some pictures in a week or two.


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Old 25th Apr 2019, 11:43 am   #14
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Default Re: Ever ready No 8 battery scan needed.

My first attempt at making the battery ended in failure, too short. I made it the same length as the "new" Ever Ready No8 which are 2mm + shorter than the original, see photo. The old original is also slightly thinner than the new ones.


John.
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Old 27th Apr 2019, 12:00 pm   #15
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Default Re: Ever ready No 8 battery scan needed.

I managed to find a rather poor scan of a number 8 battery intending to clean it up, but it was proving to be far too time consuming, so I used it as a basis to create a replica in 'Paint', using the closest fonts I could find to the originals, namely 'Bahnschrift Condensed' and MS 'YaHei UI', appropriately sized to match the original lettering in height, width and style (upper/lower case and italics as required). I cloned the blue background from the original scan. The end result is quite close to the original.

Interesting to note that the original design from new had a few imperfections.

I've highlighted on the scan in yellow where the thickness of the 'Ever Ready' logo differed from one side to the other. Not immediately apparent at first sight, but obvious when enlarged. Also, they used a lower case 'v' for Volts - so the label is marked 3v not 3V. I've noticed that other vintage Ever Ready battery scans likewise used the lower case 'v'.

Normal convention is to use upper case for Volts Amps and Watts (or mV mA mW etc), but I've left the 3v as it was, though I've evened up the logo - I don't want anyone to think it's me who's gone wonky rather than the Every Ready draughtsman who didn't have the benefit of CAD!). After all, battery labels, like other packaging, were ephemera - not works of art.

The old scan and the replica I created are attached. It needs to be printed out 7.5cms high x 7.78cms wide.

I've fitted it to my replica No 8 battery and it looks presentable, to my eyes at least.

Hope it might help someone.
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Name:	No 8 Battery label fitted.jpg
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Old 27th Apr 2019, 12:51 pm   #16
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Default Re: Ever ready No 8 battery scan needed.

Excellent work David. Can all three images be repeated in the Components and Circuits sticky thread relating to such scans?

Alan
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Old 27th Apr 2019, 1:11 pm   #17
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Default Re: Ever ready No 8 battery scan needed.

"I've highlighted on the scan in yellow where the thickness of the 'Ever Ready' logo differed from one side to the other. Not immediately apparent at first sight, but obvious when enlarged."

I suspect that was not intentional and just due to the red being printed slightly out of register. I don't expect they worried too much as long as it looked about right.
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Old 27th Apr 2019, 2:18 pm   #18
David G4EBT
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Default Re: Ever ready No 8 battery scan needed.

I've added the scan as requested by Alan in the 'sticky' thread.

Oooops - the label looks more authentic if it's stuck on in the correct orientation - not as shown in my earlier post, but as shown below!

Re the original logo being a bit 'wonky', I don't think it would have kept anyone awake at night at Every Ready, given the short life of a disposable battery.

It's only fussy old buffers like me that concern themselves with such minutiae 'cos I'm stuck indoors as it's bucketing down with rain.
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Old 27th Apr 2019, 7:06 pm   #19
60 oldjohn
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Default Re: Ever ready No 8 battery scan needed.

Hi David, That looks great, nice you have been able to make it a "sticky" for all to use. Regarding the lopsided border, I wonder if it was done deliberately to easily sort out counterfeits, like the cartographers use to do when making maps.


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Old 5th May 2019, 12:34 am   #20
Paul_A_R
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Default Re: Ever ready No 8 battery scan needed.

Hi David I made one of the 'No. 8' replacements using your method 2 and it worked really well. Thank you for posting the instructions. It is now working in an old bulls eye torch. What I found with the torch was that the modern battery dimensions appear different to those the torch was designed for. 60 oldjohn reported the older battery being slightly thinner I think maybe a couple of mm. The torch works with the 20mm plastic conduit 'jacket' but any attempt to thicken it and the on off switch gets blocked. I did put a sleeve on it using your helpful graphic though it needed a bit of surgery because of the smaller diameter I was using. It still looks good to me though.
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