I found some drag racing footage on youtube from a 1988 Long Marston event.
Its good to see the Quartermaster drag bike actually doing standing-start ¼ mile runs, plus it sure sounds nice too!
The footage was posted by “revans1410” and he’s written “My old 500 Triumph, supercharged with a drop of nitro”.
Bike clips start at 2m 35secs and 4m 23secs.
Searching the lunatics-lantern, came across this photo of the bike, so thought I’d post it (don’t know to to credit it to tho)
Its interesting to note that the engine appears to be a stressed member of the frame ie the engine plates are separate fore & aft plates as opposed to a single plate which cradles the engine.
If memory serves me (those with more knowledge please correct me), there was a time/class where it was not permitted to use the engine as a stressed member of the frame, as an engine blow-up could destroy the engine cases, which in turn compromised the frame realising the potential for the frame to bend and dig into the track surface.
Photo of a destroyed engine for ref.