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Aernoe's D1
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Aernoe
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June 15, 2020 - 9:22 pm
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Hello Comunity

In 2016 I could buy a 125ccm D1, dissassembled and in 4 boxes paked. In January 2017 I recieved the certificate from owners club.  Until end of 2017 I build up the bike without the electrical part... Since then I had no time to work on the D1. And now "thanks" to Corona crisis I a have time to work on it again.

I try to upload the pictures again (after failing another second time). I try it now with chrome.

 

before:

before-2.png

now:

now-2.png

Regards

Ernst

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Blue Heeler
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June 15, 2020 - 11:29 pm
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Great progress Ernst. `Rona`s not all bad then, at least not for Bantams coming back to life.

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Aernoe
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June 16, 2020 - 9:15 pm
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 I try to upload the pictures again...hope dies lastconfusedbefore-3.pngbicycle2-4.jpgbicycle2-3.pngBSA-B33-3.pngDSCN2520-1.pngelectrical01-3.pngelectrical02-3.pngelectrical03-3.png

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cocorico
Central France
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June 17, 2020 - 7:58 am
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If you can post a picture of the generator side (zundung) we can identify your wiring, also your engine number (motornummer). Like this:

IMG_1468.JPGIMG_2201.JPG

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Aernoe
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June 17, 2020 - 9:16 pm
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Hi Cocorico

Ehre the serial and spec number:

spec-serial-number-3-1.jpg

And the Engine Nummeris BD2.5985

Hope it Hells.

Thanks in advane

Ernest

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cocorico
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June 18, 2020 - 7:48 am
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That's great Aernoe, so you have Wipac electrics (Series 55 generator, spec 1130) and a 1952 engine (have a look ** Please log in to view **)

If the engine is original to the frame, your frame number would start BD2S. Member 'Sunny' will probably let you know what the exact wiring system for your generator should be - it all depends on the spec number.

Hope that helps - tschuss!

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sunny
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June 18, 2020 - 9:19 am
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hi Ernst     you  have  a  grate    show   of  B S A s    its  very  nice  to  see  them  ,  thanks  for  the  photo s     

your Bantams  electrics   is  correct  for the  modle     it  is fited with  a  batery  holder     , the  best  wiering  dyagram  to   look at  is on  page 81  of 

[ THE  BOOK  OF THE  B S A BANTAM ]  or  the  B S A   service    sheets  [ 808 B ]    . The  wiering   to  your   D1  headlamp    &   wier  code is  new  so  a new    BRIDGE   RECTYFER  will  help  the  electrics   work   beter    the    batery  wiering  is know  as  a  FULL  D / C  system    ,.  the  1130 geny  was   also  used  for  NO  batery   Bantams     let  me know  if   need   any  help    ,.,. Sunny

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cocorico
Central France
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June 18, 2020 - 9:42 am
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In case you haven't already found this site on-line: ** Please log in to view **

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Aernoe
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June 19, 2020 - 6:46 am
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Great, thank you Cocorico and Sunny

I will do the next steps and send you a feedback.

Regards

Ernest

PS: The motor is original - see also picture "ownerscertificate". It's BD2S.9154

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Stoo63
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June 19, 2020 - 7:54 am
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...und herzliches Wilkommen im Club, Ernst. 

The members' area is now open for you read-manualread-manual

Stewart

 '55 D3 Battery; '58 Square Four (project); '59 D1 direct lighting plunger; '59 Tiger Cub; '60 5TA;  '76 FS1-E; '91 GTR 1000;  '97 Honda Sky SGX50.

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Aernoe
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June 21, 2020 - 5:05 pm
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Hi Cocorico and Sunny

@Cocorico

you wrote

you have Wipac electrics (Series 55 generator, spec 1130) and a 1952 engine (have a look ** Please log in to view **)

I had a look on the page and I got insecure. My engine number BD2S.9154 means 1953 in my view and not 1952 as you wrote.thinking Can you please enlighten me?

 

@Sunny

I do not have [ THE BOOK OF THE B S A BANTAM ] . I found different books in google but not with ecaxt this name. I found one with the name "The BSA Bantam Bible" ISBN 978-1-78711-136-3. Could it be this one?

I am also insecure about the 808B Service Sheet because I do not have a 3V Batterie....so it would be great, if you could help.

Thanks in advance

Ernest

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sunny
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June 21, 2020 - 5:33 pm
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hi  Ernst       the  3 volt  [ PARKING  LAMP   2,5 volt ]  Battery  is  only  fited   to  the   NO  Batery  systems      but  the  bantam  may  have the Batery  holder  in  the  headlamp 

  and  a Rubber  boulb   horn    as  yours   has    ,. so  ser/sheets   808b   also  has  the  full   D/C  batery   dyagram  i   think     .,., im  very  sorry  i  donot   have  all  the   bantam  books  here      ,. i   think   i  will   get   my  children   to  get  me  the  2 books     for   Christmas    ., so  ask  if  you  need  to  please

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Blue Heeler
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June 21, 2020 - 5:44 pm
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Here are some links to just a few of the many Bantam information sources Ernest....

** Please log in to view **

** Please log in to view **

** Please log in to view **

Adventure story that Bantam owners have enjoyed reading:-

** Please log in to view **

I bought this one for my collection in the 1970s, it is basic in its content.

** Please log in to view **

Regards,

Blue

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cocorico
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June 21, 2020 - 8:26 pm
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Probably brainfade on my behalf, Ernest. Best to contact the Dating Officer with your numbers, he should be able to tell you when the bike came from the factory and where it went to: ** Please log in to view **

If you PM me your email I can give you access to information on my 'Drive'

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Aernoe
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September 11, 2020 - 10:18 am
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Hi I am back after making my BSA B33 fit for "Road traffic licensing department". Now it's about time for the D1. I have checked all this electrical stuff and I am sure, that I have now the correct wiring diagramm (see attached picture). But I am unsure whether I have the positive or negative earth system. As far as I see in the diagramms, the only difference is the connection to the battery - isn't it? In this case I prefer the negative earth system, because it's more common in our area.

It would be great if someone could give me a feedback if I do a mistake or something breaks  when I connect the battery in negative earth system.

Best Regards

ErnestAschi-Schema-8080B-Wipac-negative.gif

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cocorico
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September 11, 2020 - 11:39 am
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To switch your D1 to a negative earth (assuming you are keeping to 6V and magneto ignition), you are right in saying the battery connections need changing, negative terminal to earth and positive to supply the horn and lights. The rectifier will already be connected  + to battery +, - to battery -, but you need to check that the rectifier + is not connected to earth, eg by a mounting bolt. Best to have a fuse in the circuit, too.

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Number6
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September 12, 2020 - 8:24 pm
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I am sure the original disc shape rectifier (as in that diagram) was positive earth, via the mounting stud so will be difficult or impossible to convert it to negative earth. You might do so if you could insulate the stud from the frame.

But we are assuming, does this rectifier work, the one on the D3 that I had did not, so it was replaced with a small modern rectifier, which could be positive or negative earth.

Mike H --

Murphy's 4th law of motion states that any small object that is accidentally dropped will immediately hide itself under a larger object.

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cocorico
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September 12, 2020 - 9:11 pm
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Number6 said
I am sure the original disc shape rectifier (as in that diagram) was positive earth, via the mounting stud so will be difficult or impossible to convert it to negative earth...
 

As I mentioned. However, if an original Selenium rectum fryer is still fitted, it's well worth replacing it with a modern silicon bridge.

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Aernoe
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October 5, 2020 - 1:50 pm
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My D1 has a disc rectifier (see pictures). So it seems that I have a positive earth -correct?DSCN2799.JPGDSCN2801.JPG

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Aernoe
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October 5, 2020 - 3:42 pm
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I found some marks on the old battery, which shows how the battery was assembled. It seems that the minus (black) wire goes on the frame and the red one on rectifier.

an now I am completelydunno

Any help iswelcome

 

DSC_1599.JPG

DSC_1600.JPG

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