Hi Mark,
I ran my 1930 2-speeder on a 1” carburettor last season and it went very well on that.
For 1930 Scott were using amals on the 2-speeders I believe – Type 6/012 is my hunch…
I am unsure what was fitted to the 2-speeders in 1928.
The 1 1/16” bore amal carb that I have just fitted to my machine is adding just that tiny bit more urge. I gently opened-up the jet block and venturi for maximum effect.
You might try lapping in your float needle before splashing out on a new one. Dripping for a while after tickling is perfectly normal, dripping when running is not.
The jet block should not be loose either.
I fit new needle jets and slides for best results as these wear readily; particularly on neat fuel.
If your carburettur body is not much worn, you will be onto a winner.
Best Wishes
Hello Mark.
Your Amal was original fitment to a Series B Vincent rapide. (1946-49)
By strange coincidence I sought-out and have just fitted a very similar amal 276 (DQ/1DV) 1 1/16” series C Vincent carburettor to my Super Squirrel and am very happy with the result.
I have fitted a 210 main jet, a .106 needle jet, have the needle clip sitef in the middle groove and ha ve a No 3 cutaway (with a 3 1/2 slide still to try)
Leaks you will easily remedy.
Spares are all available.
I would personally persevere with what you have.
Good luck,
Peter
