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mikeh · 07-15-2008, 08:46 PM

I have an Evolution 58GX2 and I also have the midrange burble. Been playing with the needles and its gradually getting better. Here's the real question, when the plane is inverted why does the motor go rich? There is a nipple on the carb to run a vent line inside the fuse. Will this help even if there is a 3" hole in the firewall? The hole is there because the carb is sitting inside the motor box. I was under the understanding that the vent line is to help the motor get undisturbed air. Wouldn't the air still be disturbed because of the hole in the firewall?
Thanks
Mike

07-15-2008, 08:46 PM	#217
mikeh Bad-ass Super Contributer! Join Date: Mar 2006 Location: Wisconsin Age: 38 Posts: 272	Re: Gas engine tuning for newbies.... I have an Evolution 58GX2 and I also have the midrange burble. Been playing with the needles and its gradually getting better. Here's the real question, when the plane is inverted why does the motor go rich? There is a nipple on the carb to run a vent line inside the fuse. Will this help even if there is a 3" hole in the firewall? The hole is there because the carb is sitting inside the motor box. I was under the understanding that the vent line is to help the motor get undisturbed air. Wouldn't the air still be disturbed because of the hole in the firewall? Thanks Mike