ORIGINAL: Sport_Pilot
I see that is a Fox engine. But I don't think Ihave seen that particular carb on a Fox before.
That is arguably Duke Fox's best carb (at least until Fox put out their current carb) of the ages. A three needle Fox carb. We have a low speed, mid range and high speed needle, albeit we don't need the idle speed screw much anymore. But just think of it, you could adjust the engine for low, mid and high speed running. That sort of makes it the ultimate carb to use. When Fox first put out the .74 and later the .60 engine the three needle carb was sort of the descerning pattern flyer carb to use, not really a beginner carb for users.
That carb was replaced with the Fox butterfly valve carb later though, which was replaced with the MK-X carb and then the EZ carb and finally we have the current carb that Fox produces.