1936 BSA 499cc J12  Frame no. D 160 Engine no. D 153

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Lot 683
1936 BSA 499cc J12
Registration no. EPD 446 Frame no. D 160 Engine no. D 153

£ 11,000 - 13,000
US$ 14,000 - 16,000
1936 BSA 499cc J12
Registration no. EPD 446
Frame no. D 160
Engine no. D 153
During the 1930s BSA concentrated on producing an extensive and varied range of dependable, well-made, competitively priced motorcycles. The majority of these were singles, but for the sidecar market BSA offered the Model G 985cc sidevalve v-twin, and for the more sportingly inclined rider a smaller overhead-valve v-twin, the 499cc Model J. Somewhat surprisingly, given its complexity, the newcomer had originally been developed for the War Office; predictably it was rejected by the latter, which tended to favour sidevalve singles for military use, appearing for the first time in civilian guise in the 1934 range as the J34-11. Typed J35-12 the following year, it was joined by a 750cc version, the Y13, before ceasing production at the end of 1936 as the J12. Produced for just three years, this handsome model is today both rare and highly sought after. The vendor acquired this J12 from its original owner in 1998. It has since been refurbished with rebuilt clutch, overhauled magneto/dynamo, new chains, rewired electrics and overhauled carburettor, all of which work was undertaken by specialists recognised in their respective fields. The machine is offered together with a substantial quantity of valuable spares (full list available) which includes a rebuilt carburettor; engine bottom-end including con-rods and timing chest; two 0.03”-plus cylinder barrels; two new pistons c/w rings; four used pistons; two cylinder heads c/w valve guides; two rocker boxes c/w rockers; complete set of girder forks; and two exhaust pipes. Assorted smaller items include gaskets; gudgeon pins; valves; valve guides; Terry valve springs; rocker covers/shafts/arms; headlamp glasses; bulbs; control levers; kickstart and gearlever rubbers; luggage rack; battery tray; and set of new patent Randall pillion footrests. The machine is offered with Swansea V5 registration document.
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Buyer's Premium Rates
27.5% on the first £2,500 of the hammer price;
25% of the hammer price of amounts in excess of £2,500 up to and including £300,000;
20% of the hammer price of amounts in excess of £300,000 up to and including £3,000,000;
and 13.9% of the hammer price of any amounts in excess of £3,000,000.

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