Norvel .061 Needle/throttle
07-18-2003, 09:52 AM
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Norvel .061 Needle/throttle
I just aquired a BigMig. It a "cute" little engine and am going to use it to power a glider. I am familiar with 2 and 4 stroke R/C, but when moving the throttle lever the needle valve opens and closes at the same time. Is this normal. Most 2 needle carbs don't do this. I supose the needle moves richer when the throttle barrel is opened more to give more fuel? Thanks for your help.
07-18-2003, 01:01 PM
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Norvel .061 Needle/throttle
Yes, that is normal for the norvels sized .074 and smaller. I believe the larger ones (15 and up) are more conventional. I am not not 100% sure of the mechanics of the throttle but I share your assumption.
07-18-2003, 03:18 PM
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Norvel .061 Needle/throttle
I think the needle is turning with the throttle barrel. I don't think the needle adjustment changes. I had an old McCoy .19 that was made the same way.
