28-10-2020, 06:57 PM
(This post was last modified: 28-10-2020, 06:59 PM by Colin Morgan.)
A few years back, I ran my 1928 Chummy with a couple of different 24-T2 carburettor set-ups. The Austin carb spec I was trying to follow was Choke 14mm, Main 75, Slow 50, Air Bleed 150 (1.5mm) and Seat 2.0.
Both the carbs I tried had variable jets - and the needles were different - on the one with a turning knob of 0.56" diameter I found it needed 1.9 turns from closed, and the one with a turning knob of 3/4" needed one turn. On the final set up, the carburettor used had a 45 Slow running jet. I think the key parameter for success was the 14mm choke, which the F1372 will have.
Colin
Both the carbs I tried had variable jets - and the needles were different - on the one with a turning knob of 0.56" diameter I found it needed 1.9 turns from closed, and the one with a turning knob of 3/4" needed one turn. On the final set up, the carburettor used had a 45 Slow running jet. I think the key parameter for success was the 14mm choke, which the F1372 will have.
Colin