BSA Motorcycles

BSA Motorcycles

Historical Snippets:
BSA engines have been used in numerous machines including CCM, and supplied cycle components for many manufacturers including Givaudan

More BSA History...

horton.davidjohn at gmail.com
1940 bsa c10
I am looking for MUDGUARDS but all I can see are 1950s+ PLUNGER ones. ANY thoughts on other comparable types from other bikes or suppliers/manufacturers. I want correct restoration but not concourse
Regards david
David horton
Melbourne, australia

Wed, 04 Apr 2018
svincent1954 at yahoo.com
I have come across this original BSA factory decal and I would like to know what year and model it was used on. Please see attached and thank you in advance for your time. Steve
Steve Vincent
Twain Harte, Ca USA

That style of BSA logo was used in the 1930s. See for instance the BSA 1934 catalogue.

BSA-1930s-Logo.jpg posted to comments, above.

Mon, 12 Feb 2018
lloyde at albanycitymotors.com.au
bsa w35-7 1935 500cc ohv

hi do you have a exhaust valve lifter spindle,to suit this bike i have one fitted from a early 250 but it does not decompress well enough please reply regards lloyd elliott
lloyd elliott
willyung Australia

Fri, 29 Dec 2017
paolooci at alice.it

good morning, can you please help me to recognize this model of motorbike? frame a15 a15 engine Thanks in advance Paul
paolo oci
siena Italy

BSA-1935c-A15-OHV-POc-01.jpg posted to Comments

Comments Button

Comments Button

Login using FB, Twitter etc. Go there comments

Engine number is A15.171 (remainder unreadable)

Thu, 28 Dec 2017
daanaawyatt at gmail.com
BSA B29 Deluxe 1929

Wanting to know if anyone has any information or parts for this model.
Gloucestershire United Kingdom

Sat, 02 Dec 2017
britpacific at gmail.com
BSA 1967 Starfire

I would be interested in examples of other owners who have Starfire scramblers, trials or trail bikes especially those who have converted a standard street model into off-road. A general discussion of what was involved, problems encountered, tires, exhaust, etc.
James Britton
Umpqua, Oregon USA

Fri, 24 Nov 2017
briangains at outlook.com
BSA 2.49hp 1930?

Hi I have a BSA 2.49hp engine for sale on ebay and a prospective buyer is very insistant that I give him the full engine number so he can id 'engine modifications'. Sounds a bit fishy, was your 2013 stolen m/c recovered and could the engine number be used for cloning?
Brian Gains
West Sussex United Kingdom

Cannot answer those questions, sorry.

Mon, 02 Oct 2017
eddieplunkett71 at gmail.com
bsa not sure

I have found an old bsa motorcycle I think not sure I've tried to look up my numbers on bike but I can't find the numbers I have on the engine are c-15OS 08793 on the frame numbers are 108793 can you help me find what I have and what it might be worth thank you so much
eddie plunkett
Dickson tn USA

  • Images depict an extremely gruesome chopper with a parallel twin of indeterminate heritage. Whatever it is, it's not a BSA.
    The numbers on the engine are stamped in a very uneven fashion and if done at the factory it seems likely the culprit was inebriated.
    The photo of the digits on the headstock of the plunger frame hint at the existence of others - removal of paint may be revealing.
    Ralph Nader did not mention this machine in Unsafe at Any Speed.

    Photos posted in Comments

    Comments Button

    Comments Button

    Login using FB, Twitter etc. Go there comments

Tue, 05 Sep 2017
deanmusgrove at hotmail.com
1938 1938 bsa c10

Hi I am after some info on my grandfathers c10 bsa. it was purchased new in Melbourne Australia. I am struggling to find its original colours any help will be greatly appreciated thanks
Dean Musgrove
Melbourne Australia

Thu, 10 Aug 2017
gabrisx at gmail.com

My grandpa on BSA, what model and year? Thanks
Bir..ai Lithuania

  • It appears to be around 1929. The previous year they ran flat tanks, and acetylene was phased out early in the 30s. Footboards were fitted standard to other 1929 models, so they may have been fitted to this one as an option, or they were possibly standard on some export machines. The engine appears to be a two-stroke, the first of which BSA introduced in 1928.
    • BSA-1929c-Twostroke-Lithuania.jpg posted in Comments
      Comments Button

      Comments Button

      Login using FB, Twitter etc. Go there comments


    Thu, 03 Aug 2017
    tromp.julie at gmail.com
    Bsa Unkown

    Heykes dearest, My name is Julie Tromp and I live in Belgium. My Aunt got a photograph out of a heritage and asked me If I know the bike displayed on it. Couldn't exactly identity it but true a asking on Facebook I stumbled on Bsa and your page. Would you be so kind to take a look at the picture, maybe you can tel me something about it. The picture should been taking in 1933. With best regards, Julie Tromp Meeuwen Belgium
    Julie Tromp
    Meeuwen Belgium

    Sorry, resolution is far too low to identify anything other than the registration number.

    Thu Jul 13 2017
    ratnayaketherika748 at gmail.com
    spare parts
    require a crank case of BSA B30-3

    Thu Apr 13 2017
    ratnayaketherika748 at gmail.com
    spare parts
    BSA B30-3
    crank case of the above model
    sri lanka

    Mon Mar 13 2017
    karl.76 at hotmail.co.uk

    BSA 1929 B29 deluxe 250
    I'm looking at buying this model to restore, did this model come with a flat tank
    And how much could I get for a fully restored model


    The 1929 B29 Standard 250cc did not have a flat tank. Engine and frame numbers would help identify it. For pricing please see the valuations page. Ed.

    I did a bit of research on the number he gave me and it looked like it was changed at some point
    Engine No B27651
    Frame No B43000

    Numbers do not appear to correspond with those on this list: http://www.bsaownersclub.co.uk/yearlist1921.html
    Correspondent replied that he'd decided against buying it.

    Sun Nov 20 2016
    sudiastara at gmail.com
    i need to buy generator for 1929 BSA S29 Standard 500cc
    BSA 1929 BSA S29 Standard 500cc SV
    please help me to buy generator for my 1929 BSA S29 500cc SV
    Bali - Indonesia

    Fri Jul 29 2016
    sompster007 a tgmail.com
    fuel tank for bsa
    ,1912 1912
    I. Am looking at selling a 1912. MODEL. A,b,c,d. In great condition no sings paint work fair

    Sat Aug 06 2016
    oceanwild6 at gmail.com
    bsa 1912 unknown
    any info possible,bike is complete
    Please see the page on valuations

    Sun Jun 26 2016
    spanner_bsa1962 at hotmail.com
    spare parts
    bsa 600 sloper ohv m35-11
    Hi I am chasing a 5 bolt head and bolts for a 600 ohv twin port sloper. 1935 . Can you help in any way? Regards Rob
    South Australia

    Sun Jan 03 2016
    david.broughton at tesco.net
    BSA Round Tank Magneto
    BSA Roundtank B
    Please can you tell me what type of magneto was fitted to the BSA Round Tank model b three speed 1924/25
    West Sussex

    Sun Dec 27 2015
    jeannekbennett at verizon.net
    1946 B31 Restoration
    BSA B31
    Hi. Anyone know how I can find the original tank color for my 46 BSA B31? Thanks so much

    Tue Dec 01 2015
    pratik.poonacement03 at gmail.com
    bsa model no?
    I m the owner of the bike in the picture but i m not able to recognise the model number and more of the bike.

    The bike may be a 125cc. The capacity can most likely be determined from the engine number.

    Wed Nov 25 2015
    thehixter at embarqmail.com
    look for a 1946 c11 transmission
    1946 bsa c11 c11
    I'm looking for a 1946 c11/c12 transmission for a restoration
    United States

    Wed Nov 04 2015
    erniegavey at suremail.gg
    Fitting amal type 276 carb.
    BSA 1923 S 23
    I have recently completed the 1923 Model S shown here. Here in Guernsey it is almost impossible to ride with the amac carb due to traffic and slow speeds. I saw photos on your site of a 1928 Model S with Amal carb sent in bt Robert c Sweden. Is it possible to get the details of the amal from him? as I would like to fit one on mine.
    Guernsey Channel Isles.

    Sat Aug 22 2015
    ale.carfast at gmail.com
    request approximate value and infos
    bsa b35-1 250 1934
    Hi, I just bought a BSA b35-1 , and I will soon start the restoring. I would like to know what will be approximately the value once fully restored, and where can I find the colours codes and maybe some spare parts. Thank you

    Fri Mar 27 2015
    bjohnstone at cleanair.co.za
    How do i identify the year of my bsa sloper
    BSA sloper side valve
    need to find out year of my BSA sloper
    south africa

    Please send clear images of the engine and frame numbers, along with a profile image of the bike. Ed.

    BSA 1959 Super-Rocket A10 650cc Twin
    BSA 1959 Super-Rocket A10 650cc Twin

    Sat Mar 28 2015
    the_mordor9 at hotmail.com
    BSA gallery
    BSA 1959 A10 Super Rocket
    I have attached a few photos of my 1959 BSA Super Rocket (East coast import model). My father purchased this bike new in 1959 and it is completely correct. I restored it two years ago. It's a perfect match to the 1959 BSA brochure that you have listed.

    Fri Jan 16 2015
    malcolmdbryant at hotmail.com
    BSA B18 light deluxe
    I am trying to replace the gearbox cover as the kick start bearing pocket is damaged and unrepairable. This is a four speed hand shift gear box.
    north carolina USA

    Tue Sep 16 2014
    andrewscott1942 at talktalk.net
    BSA photo
    BSA B30/3
    Would you like this photo for your pictures
    Girvan Scotland
    Many thanks! BSA 1930 B30/3 image: 1930 gallery

    Mon Jun 16 2014
    tsrsbs3 at hotmail.com
    Model of bike and year
    BSA Not sure
    Serial# on transmission
    Serial # back of Head 68-44 and 650 under numbers
    United States

    Sat May 24 2014
    jasminegriffin19 at telkomsa.net
    bsa motorcycle year of manufacture
    bsa 250cc o'head valve model c11 engine no kc11926
    could you please tell me the year of manufacture
    heidelberg western cape south africa

    Wed Mar 12 2014
    Jr68ioweu1 at aol.com
    1962 bsa gss for sale
    62 Rocket Gold Star Scrambler approx. 10K original

    Tue Mar 11 2014
    greg.ames at sbcglobal.net
    model identification
    BSA A50?
    looking to aquire a 1961 BSA. Dont know what model it is. Frame #A508771 Motor #A50.A.792

    Sat Feb 08 2014
    dbeadsmoore at yahoo.com.au BSA ?

    Could anyone help to identify this BSA ?. Also any ideas if it worth anything as is or to renovate ? penrith australia English

    More info in the BSA forum...

    Wed Nov 20 2013
    subnobile at gmail.com
    richiesta scheda tecnica bsa h 20 del 47
    BSA H 20 FURG del 1947
    Richiedo se e' possibile inviarmi scheda tecnica della moto bsa h 20 del 1947.Vi ringrazio in anticipo.

    Wed Nov 06 2013
    themaccas2011 at hotmail.co.uk
    1959 motorcycle
    BSA A7SS
    Can you please supply me with your original distributors logos for the mudguards? Just refurbished this motorcycle and after enquiries you were the original distributors for this machine.
    West Yorkshire

    Sorry, we don't sell decals.

    Thu Oct 17 2013
    bsa 500cc bsaSloper
    hello that such I am looking for the manual bsaSloper exploded, and is 500 cc paradsecargar have some file that I have a noce desarmaday completamenete as aj from and thanks go
    buenos aires

    1930 BSA Sloper 500 Single - YouTube

    Mon Oct 07 2013
    Lubrication questions
    BSA Sloper 500 single
    I am trying to resurrect my 1930 BSA sloper 500 single, which I have not ridden in over a decade. When I dragged it out to fire it up again this year, I had some concerns about the oil levels in the engine and the transmission. As a result, I have a number of questions before I start to ride this old bike again.

    1) The engine has a dip stick adjacent to the fill spout on the right hand side of the engine. It is a very long stick marked with a 1 and a 2. There is not a clear indication of the full mark, and I am trying to recall whether the 2 means 2 pints low, and the 1 means 1 pint low, or whether 2 is low and 1 is full. Can you please confirm the markings on the dip stick, and where the full mark is?

    2) Also, there is a plug with a fibre washer on the left side of the engine casing beneath the crank. I suspected that this is a drain plug for the crankcase, but when I opened it, only a small amount of oil ran out of it, despite the fact that the dip stick is still over the 1 mark, so I now suspect that this drain plug is either clogged (I did fish a wire through there) or that it does not communicate with the reservoir supported by the filler spout and dip stick on the right side of the engine. So, now I am confused. Exactly what did I drain out of this drain plug, and how and where do I replace this lubricant, and how much do I add (is there a level plug somewhere)?

    3) There is a very small tube inlet that angles back towards the rear, on the left side of the engine, high above the crank that appears to have had a metal tab to lock a knurled wheel or knob (although my knob is missing). I suspect that this is a device for oiling the primary chain, but I am not certain what this is for.

    4) Could you please provide a complete primer on all lubrication resevoirs and fill, level, and drain plugs and locations of each, for the engine and transmission on a 1930 BSA Sloper 500 single.

    5) I would also appreciate a recommendation for all appropriate fluids to use in each location.

    6) Finally, there is a dial indicator on a knurled knob on the right side of the engine, close to the dip stick tube. I suspect that this adjusts the amount of oil distributed to the crank bearings, but I would also appreciate a primer on how to set and adjust this meter as well.

    7) Do you have any technical manuals, or workshop manuals for this bike that you could share with me, or a source for me to acquire these manuals? I would be happy to reimburse any costs associated with reproducing them if you (or anyone else ) can assist.

    I am really excited to ride this old bike, so any and all advice that can be sent promptly is genuinely appreciated.
    Thank you so much.
    Boston, MA, USA

    Here's a video clip of the bike. Please excuse the gear crunching as I had not yet adjusted the clutch!


    Thank you so much for your prompt response, as I am so excited to finally ride this bike.
    I will try to take a photo or two to send you when I am next out to my warehouse, but I do not have one yet. I have sent you the maiden voyage video in the meantime!
    I have made some progress since I wrote these questions.
    Consequently, my inquiry has changed somewhat as well.
    I have learned the following since writing my original questions.

    1) The dipstick appears to be marked 0, 1 & 2, so I suspect that this references the number of pints that the crankcase is in need of. Also, I found a "full" mark on the filler port, which appears to coincide with the 0 mark on the dipstick, so I believe that I have solved that issue.

    2) The plug on the left side of the engine case is still confusing me. Apparently there are two plugs with fibre washers beneath the crankshaft level, so I now suspect that the lower one is a drain plug and the upper one is a level plug. However, I am confused as to what is lubricated by these plugs as it seems to be separate from the fill reservoir on the right side of the engine for two reasons. a) The level plug appears to be considerably lower on the case than the fill line and dipstick full level, and b) why would you need a level plug on an engine with a dipstick? In either case, what does this area lubricate, and how do I fill it (through the level plug?)

    3) I believe that the tube (which is actually cast into the engine case) and angled back on the left side of the engine is a device to adjust the amount of oil that is distributed to the primary chain case, but I appear to me be missing the adjuster device as there is no knob to turn, just the hole and a spring steel locking tab, which I suspect is intended to rest against the knurled adjuster knob.

    4) I would still appreciate a primer on all lubrication cavities, fill, level and drain locations, and recommendations of proper lubricants for each cavity, especially the primary chain, as I suspect that the clutches are supposed to be wet, and I know that non-hypoid is preferred for wet clutches, but I doubt that these were available in 1930. I have been told that a straight non detergent 30 weight is suitable for this area? The primary chain case does not appear to be leakproof, so I am now wondering if it is intended to be dry with only periodic lubrication form the oiler described above, as opposed to being submerged in an oil bath like more modern bikes.

    5) I am now reasonably certian that the dial indicator on the right side behind the dipstick, is an oil pump adjuster for lubrication of the main bearings, but once again, I would like to confirm this fact, and how to properly adjust it, so that I do not damage the engine or bearings.

    6) There is also a plunger type piston on the right side of the engine which "pops" out when the engine is running. I suspect that this is an indicator for the rider to confirm that there is adequate oil pressure. Please confirm how this is used and how it is read. Does the rider reset it during riding, or would low oil pressure allow it to collapse on its own?

    7) I would be extremely grateful if you could reproduce and send the manual to me.

    8) proper clutch adjustment to avoid gearbox grinding when accessing first or second from neutral.

    Thank you so much for your offer to help.
    I also sent a separate request this morning with regard to the serial number sequence on a 1921 Monet & Goyon Three Wheeled motorcycle. I cannot properly read the first digit, and although thye bike was transferred to me with a "6" as the first digit, it appears to be a "g" or some other letter or dgit. Do you know what letter or digit these bikes typically had as the first digit on the serial number?
    Thank you so much for all of your help and advice. I really appreciate it.
    Kind regards,

    Matchbox Motors Microcar, Minicar & Motorcycle Museum
    c/o Charles Gould
    163 Country Club Road
    Newton, Massachusetts 02459
    (617) 965-4848
    (617) 721-9400

    Sorry, cannot find a manual for this one. Try here: Books and Manuals

    Wed Oct 02 2013
    mecmalicious<at> yahoo.com.au
    not sure of the year of my bsa bantam
    bsa super bantam 176cc
    does anyone know what year my bantam is? and how many where made that year? chassis no. is d76909 engine no. is ed71131 thank you mark
    brisbane australia

    Tue Apr 09 2013
    1972 b50ss
    bsa b50ss
    any info on the b50ss models or where to find info

    Wed Mar 20 2013
    How to identify year of my BSA
    BSA ZB31 12934 ( frame numbers)
    I have a BSA single cylinder,rigid frame and was wondering how to identify the year. Also the engine numbers are ZB33.12588

    Fri May 03 2013
    Head gasket for 4Cyl 1930 BSA
    BSA 1930 three-wheeler
    I have a 4-cyl flathead 1930 BSA three-wheeler, and before I take off the head, would like to have a head gasket available.

    Tue Feb 26 2013
    need info on 1936 bsa
    bsa 500cc
    Hi, I'm trying to sell 1936 bsa inhereted from father. I have no idea how much its worth, and would like to find out some info so I know what I'm talking about when I do sell it. So it hasn't been started in a long time. Also I see there's different models, I know its a 500cc but I don't know if there's and variations on the 500cc. Any feedback at all would be great. Thank you.
    las vegas, nevada

    Sun Jan 20 2013
    1965 Photo
    BSA 650
    I am looking for a high resolution photo of a 1965 BSA 650

    If you have a query about BSA motorcycles or have information about these classic British machines, please contact us

Road & Race Motorcycles
Road and Race Motorcycles

European Cafe Racer Specialists - Ducati, Laverda, Moto Guzzi, MV Agusta... Spare Parts and Restorations