IowaRV9Dreamer
Well Known Member
I need to drill holes for throttle and mixture cables for my 9A. I’m using an RSA fuel servo, with throttle on the left and mixture on the right. It will be vertical on the bottom of what was an O-320. I see there are a few locations called out on the DWG 19 inset. I read the firewall forward kit instructions which say a vertically mounted Bendix servo should be treated as a carb.
For the throttle cable, the drawing says to use hole A (in the bumpout) for a 9A with an O-320. It also lists hole B (low, a little right of center) for a 7A with an O-320. Why the big difference? The fuselages are identical, same engine….
Similarly for the mixture cable: hole D (high/left) for 9A/O-320 vs. hole E (low/right) for 7A/O-320. Why the difference?
I like the idea of up high because all of the low spots go through the heat deflection cover which seems like a pain. Thanks for any insight. I’m only asking because I’ve found that when I don’t understand why the plans are a certain way, I often end up choosing the poor path…
For the throttle cable, the drawing says to use hole A (in the bumpout) for a 9A with an O-320. It also lists hole B (low, a little right of center) for a 7A with an O-320. Why the big difference? The fuselages are identical, same engine….
Similarly for the mixture cable: hole D (high/left) for 9A/O-320 vs. hole E (low/right) for 7A/O-320. Why the difference?
I like the idea of up high because all of the low spots go through the heat deflection cover which seems like a pain. Thanks for any insight. I’m only asking because I’ve found that when I don’t understand why the plans are a certain way, I often end up choosing the poor path…