1930 BSA Sloper 500 Single

Okay, so this is the maiden voyage on the 1930 BSA Sloper 500 single.
Unfortunately, the clutch needs some adjustment so I could not avoid a bit of gear crunching trying to engage first or second from neutral, but that should be easy to resolve.
I love this bike, which has such a modern feel for such an old bike. It does not feel primitive at all, and is reaosnably powerful, fast and very well balanced.
BSA sloped the engine forward to make room for the new "saddle" design tank. The sloped engine and the saddle tank both lowered the center of gravity for the bike and gave it a unique balanced feel.

[@pachy444]

Lovely bike.
I don't buy your theory about why the engines sloped as BSA also made an upright engined bike that year of the same capacity with OHV & that had a sadle tank.
More likely is this.... BSA had TT racers a few years earlier with low slung sloping engines & its probable they designed a range of road bikes aimed at youngsters to mimic the look of those racers.