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D1 queries
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neddyo
Adelaide, Australia
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March 26, 2019 - 10:48 pm
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Hi all Bantam people,

I have 2 questions regarding a D1 rebuild I'm doing.

I have 2 different axles for the rear hub, one has a longer plain section

than the other but both seem to have had the bearings running in the

 same relative position?

The other question is, which one of the 2 tail lights in the image would be nearer

to correct for a 1951 D1.

Nick.

IMG_7389.JPG

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sunny
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March 27, 2019 - 7:23 am
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 an  after  market    rear   rack   may  fit  on  the  shaft         as for the  lamps   the  black one   was fited  to  LUCAS   systems    the   red  plastik  one     for   WYPAC  systems    in  most    parts   of  the  planet  for  1951    both  fited

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neddyo
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March 29, 2019 - 3:38 am
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Here is an image of the back axles.

Another query, a D1 engine I bought has no engine number

in the usual places but a 4 figure number (2974) adjacent to the

wico magneto with no prefix as in YD.

A friend thought if you ordered a new pair of cases they came unstamped.

Nick

IMG_7377-1.JPG

IMG_7388.JPG

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sunny
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March 29, 2019 - 9:24 am
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both axles    run  from  1950       proberly  both   D 1    the  thin   one  is     for   ridgid  frame   the  bottom   PLUNGER    frame      ,,

Stamping   cases  is  USLY   done   at  the  place  the  old one   is  disposed   of    the  first  part  is  the   MODLE     this  is   not  SO   inportant   after  leaving   the  factory      &  may  be  omited      ,the  engine   number   is   in the   place we   would  expected  to  find  it   so  ask  steve   to  I/D  your    bantam

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swalsh58
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March 29, 2019 - 11:00 am
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Have you checked the front engine mount for a number? 

Current bikes......1958 D5, a 77 Suzuki GT250 and a 77 Honda CB125S. I have a 74 Kawasaki S3 400 and a B175 waiting for restoration. A 1980 Honda CB400N waiting for MOT.  Everyday ride is a 2011 Harley Davidson Sportster. 

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neddyo
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March 30, 2019 - 6:01 am
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Yes I have checked the front mount area, nothing there

but it does have the markings underneath showing

the cases are a pair.

Does anyone know what year D1's went from painted to

chrome plated handle bars?

Nick

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sunny
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March 30, 2019 - 9:50 am
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hi Nick   allways  had   chrome   bars   thers  nothing  in  my  books  says  thay   wer   painted   ,   have  you  found  the  Frame  no  yet   its  on  the  headstok   for  the   1950 s  D 1

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neddyo
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March 30, 2019 - 8:26 pm
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Thanks Sunny,

I have a 1951 D1 Lucas, it lookx very original to the point 

it still has the sellers transfer on the front

mudguuard.  The handle bars are painted with chrome levers

also the front and back brake levers are painted.

In thd interest of science I will look under the twist grip

to see if there is any trace of chrome.

The seller was a person named Alec Bennet who had a motorcycle

business near Southhampton.

Alec Bennet was a very interesting person, an IIrishman who migrated

to Canada but returned to England ti fight in the first world war.

He was a despatch rider during thd war, liked motorcycle riding so much

that after the war took up racing and won the TT on the IOM

He set up a motorcycle business near Southhampton which is where

my bike was sold.

It would be a pitty if this bike was ever restored with the loss of it's history.

Nick.

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neddyo
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March 31, 2019 - 8:55 pm
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No trace of chrome under the twist grip.

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sunny
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April 1, 2019 - 7:45 am
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hi   Nick     i  have  lernt   NOT    to  say      the  words        { NEVER  HAPEND }    regarding     Bantams          as  i  have  found   the  books  donot  say    everything   about  bantams        like        the   Army  like   to   paint   there  Transport       and   some   parts   sent   overseas  may  not have been   compleated     ,thing  wont   be  sent   back   for   chromeing     will  thay           

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cocorico
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April 1, 2019 - 8:14 am
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I hope we can have some pictures of the finished bike (but unrestored, as you say). We have another forum member who is in possession of a Bantam of the same era which participated in ISDTs - it even has some of the dirt from it's last race. ** Please log in to view **

Would be nice to see both in the Gallery.

The Bantam Club Forum - all the answers are in there.

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JulianS
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April 1, 2019 - 4:51 pm
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The war in Korea during the eary 1950s caused material shortages and had an impact on motorcycles made at the time. Some parts specified as chrome were painted due to the shortage of chrome. So it is quite possible that Bantams of the time were supplied with painted bars.

 

The photo is from the 1952 BSA catalogue (dated May 1952). Note paragraph "Finish" bottom right.195216.jpg

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swalsh58
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April 1, 2019 - 5:15 pm
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As far as I am aware, very early Bantams came with painted wheels as chrome was difficult to source and expensive. If they painted the wheels, there is a fair chance they did the same with the handlebars?

Current bikes......1958 D5, a 77 Suzuki GT250 and a 77 Honda CB125S. I have a 74 Kawasaki S3 400 and a B175 waiting for restoration. A 1980 Honda CB400N waiting for MOT.  Everyday ride is a 2011 Harley Davidson Sportster. 

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neddyo
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April 1, 2019 - 6:50 pm
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Thank fellas,

Great response to my questions.

I was doing my apprenticeship at a BSA dealership

during the 50's and the D1 Lucas was sold as the deluxe,

I dont think I ever saw a BSA with painted handle bars.

It was a great time to be a lad, we got overtime putting

all model bikes together.

Bantams came 2 in a very solid wooden box with the

front wheel and the handle bars removed but with the cables

still in place. Each bike got 1/2 a gallon of petrol and about a mile

down the road and back, if it was'nt raining. The bikes had been previously

tested at the BSA works so not many problems.

Those years certainly made me a life time BSA tragic.

Nick.

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neddyo
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April 10, 2019 - 11:18 pm
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Another couple of questions,

When did Bantams start using a head gasket.

What size is the original bulb hooter bulb.

There seems to be several differdent size bulbs on ebay.

Cheers to all

Nick.

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sunny
Norfolk
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April 11, 2019 - 11:31 am
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head gaskets   from   1953    with the  intro   of D3   i think         if  somone  can  giv us an engine   number   it  can  pin  it  down    i  serjest  you  look  in  your  local pushbick   shop   for  a    cerly   BUGLE   Horn   thay  seem  to have  the  rite  size  bulb  on  its  2  1/2 inch  across   outside  thats   about    65  m/m    any  smaller   wont   have  enuf   puff

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neddyo
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April 12, 2019 - 12:15 am
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Thanks Sunny,

I think you are spot on with 2 1/2, the one I have measures

2 3/4 and looks to big.

When did they stop fitting the gear position indicator?

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sunny
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April 12, 2019 - 11:00 am
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hi Nick   the    the   sales  photo    have  some  biger   looking   ruber  horn   bulbs   in  them so    i  would   use  a biger  one if  you  have  one     . I cannot   find    dates the  books   dont get  that  involed      the  BSA oners club   may  have  dates  on  the  SPEC  sheets  thay  have but  that  wont  tell  us  the  date  the  last  item   was  sent   from  the  factory         my  D 7   has  a  mix  in  thred  tys  S/F and  Whit    and   beeing  a  cheap  exported  modle     dos  not   serprize   me   so   if  your  crankcases    have  blanked  of   indecator    hole  it  may have  been  that  way  being  a pastoral  type  without   a batery      

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cocorico
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April 12, 2019 - 12:02 pm
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Have a look ** Please log in to view ** for lots on info on the D1 (He's a club member in Queensland). I have a 1952 D1 engine which has the indicator, My 1956 D3 does not (I think they went out of use very early on - a bit redundant with only 3 gears maybe?

The Bantam Club Forum - all the answers are in there.

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neddyo
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April 13, 2019 - 7:51 am
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Thanks cocorico and sunny,

The article on spotting a genuine 48 D1 blew me away,

it made  me realise how little i know about the first Bantams.

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