by loucrane » Sat Jan 02, 2010 3:44 pm
Opel,
Which needles are you discussing?
FOX has different needles in various displacement "standard" (CL/FF)engines, and the carb needles have varied over the years with the different types of carbs. All I'm fairly certain of is the Fox Stunt 35 needle being 3-48 USF thread... Duke Fox used some very unusual thread specs for the various adjustment screws and fuel nipples on carbs over the years...
I think SuperTiger uses the same needle spec (pitch and diameter) for the "standard" NVA and in the carbs, or at least used to. It is about a 2.5mm thread - I don't recall the pitch, but it may be a fraction of a mm.
ST NVA are being replaced by similar NVA produced in the USA, for CL Stunt use, at least, by a few people.
Anyone got better info for us?