16-04-2019, 09:51 AM
(This post was last modified: 16-04-2019, 09:56 AM by Bob Culver.)
Is HS1 a semi downdraught? The horizontal carbs look far more period on a non special. The 1 and 1 1/8 horiz carbs seem to differ only in the output bore. I dunno at what size the internal aperture and the suction assembly differ.