Vintage bsa bicycle frame numbers. From 1966 the existing Triumph 650cc & 750cc Twins and 750 Triples Beginning in 1969, Triumph started using a 2-letter prefix for frame and engine numbers. There are a Fees 1961/2 BSA Bantam trials bike Not registered Frame number Engine number D10 1307 Owned for more than 20 years Last used 6 years ago Will need re-commissioning All lots in this sale are sold as BSA's 1971 and later, either side of the frame on the stearing head to frame gusset, note that these don't always have the model stamped. Sometimes bicycles or frames are found with no makers’ The frame number is located for BSA's 1969 and earlier on the left side of the frame, on the front engine mounting lug. On some models the model identifier appears at the On most BSA's the frame number is located in the following places. If you find raised numbers, these are casting part numbers. g. The first letter indicates the month of manufacture. What Year Is It? Engine and frame numbers Until 1968, BSA used a numbering system with a distinctive prefix for each type of machine, so it is easy to see if the engine and frame are from the same model Re: old BSA bicycle Hi I have just bought an BSA bicycle to restore for my wife and wondered if anyone can help date it? In 1969 the BSA and Triumph factories moved to a common numbering system used for both engines and frames. pdf), Text File (. Auction by Charterhouse Auctioneers, in United Kingdom: 1961/2 BSA Bantam trials bike Not registered Frame number Engine number D10 Only in very few circumstances does it list a registration mark usually where the factory registered a machine for a specific event or as a press road test machine. On most BSA's the frame number is located in the following places. However, in the VCC BSA file are the ledgers from Astleys of Oldham 1966 – 1973 High-End Lightweight Numbering System A new number system was introduced in 1968 for the Mass Production of bicycles. On most BSA's the frame number is The extensive compendium of BSA made motorcycles. txt) or view presentation slides online. com in 1999. Owners with late model BSA's can easily identify the month and year of their machine as the factory adopted a dating system for frame and Possible identification of bicycle frames using only frame numbers – initial guidance. It is always stamped, raised numbers are casting part numbers. I notice on the machine dating sheet that the years 45/46/47 with prefix XC, all the engine and frame numbers start at 101, unlike other years that give you a number to start at. Search your model and year and find if your frame and engine match correctly. This system was used throughout the production run of the Tridents and the Rocket 3s. BSA used a system of letters and numbers for yearly identification of their machines. On'71 up, 250-500 single oil in frame bikes, the number is located Good morning I need a bit of advice, monday last week we picked up a bsa c15 frame and we are struggling to locate the year of the bike . The Frame Numbers are alway stamped. They were not sequential and there are no known company records. Engine and Frame numbers are composed of a model identifier, a two character date code (month and year) and a five digit, sequential serial number. The engine and frame received the same I was wondering if anyone could help me identify a bsa frame. This document allows you to identify the year and model of your BSA Motorcycle from the The Vintage Club's archives are the actual build ledgers, where the frame number is noted alongside the other columns showing the number of the engine that was fitted to the frame, the date of assembly Frame numbers are a notoriously poor guide to BSA dating. The engine is a b40 and I was told the frame is a b25. The code consisted of three parts, the first as two letters giving month and year respectively, the second was a five digit number and the third a model code. Pre war: Frame Number is located on the front top frame member either by the front seat stay or by the steering head. What Year Is It? Engine and frame numbers Until 1968, BSA used a numbering system with a distinctive prefix for each type of machine, so it is easy to see if the engine and frame are from the same model What Year Is It? BSA - Free download as PDF File (. Up until 1968 it is rare for the engine and frame number to be identical and where the frame is shared by several models the codes start with the smallest model e. Will be re-storing as For the models produced after 1969 a new coding system (numbers) was introduced using a two letter prefix for the month and model season year. BSA's 1971 and later, either side of the frame on the stearing head to frame gusset, Numbered on the seat post lug, four numbers and two letters. With what I have found so far is the frame number is c15. 1950's: Located Identifying engine and frame numbers, 1969 season onwards. It's not the end of the world if I don't pin it down, just nice to know. all A series models have A7 or A50 Before you start pleased read first about the BSA Serial Number System! Thanks to BSAOCUK who supplied the information to BritBike. The second . This information combined with the yearly numbers below should help you identify the year and model of your machine.
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