My memories of Colin Seeley are from when he was racing sidecars in the mid 1960s. When living in UK my local circuit was Mallory Park. Every year there was a Post TT meeting on the weekend following the TT races in the Isle of Man. Most of the guys who had raced in the TT would be at the meeting. Colin had his BMW Rennsport outfit that he had used in the TT (limit of 500cc). At the Mallory meeting (which is quite local to Birmingham--the home of BSA) he would be up against all the Brummie (Birmingham) guys with their BSA A65 (650cc) engine outfits. These included Chris Vincent, the Hanks family (Father "Fatty" Hanks on his sit up and beg outfit and sons Fred and Norman Hanks on their kneeler outfits) and the Boddices (Father Bill on his sit up and beg outfit and son Mick on his kneeler outfit). These guys had access--either officially or "over the factory wall" to BSA factory go faster parts. The racing was fierce and rough with no holds barred. Colin Seeley however was so smooth and the engine so smooth and quiet it made the Beezas sound like rough old tractors. He was a joy to watch and like all good racers was very fast but it looked as though he was not trying. Fond memories! Colin R.I.P.
A good friend of mine was telling me that a few years ago he was at an auction and a lot came up which the auctioneer described as built by Colin Seeley.
Someone near the front then called out that the bike hadn't been built by Colin Seeley. When the auctioneer asked how he knew that was the case the guy replied "because I am Colin Seeley and I didn't build that bike"