IowaRV9Dreamer
Well Known Member
I'm installing a Trio gold roll servo in the wing of my 9A. I have a question for someone who has installed one of these using the SafeAir1 installation kit.
It looks like the SafeAir1 pushrod attaches to the bellcrank using the same bolt as the control stick pushrod (hereafeter called the "bellcrank bolt"). My question involves the maximum control swing at this point.
The Trio manual specifies a maximum of 2.4 inches (peak-to-peak) control movement, less if you use one of the inner servo arm holes. I don't have my wings attached, but it looks to me like the bellcrank bolt will move more than that. I moved my aileron over the range Vans specifies and I got about 3 inches of swing at the bellcrank bolt.
To get under the 2.4 inches it seems to me that one would have to drill a new hole in the bellcrank, about 3/4 inches closer to the pivot?
Am I all wet here? If someone has a 9/9A and could measure the swing of the bellcrank at the control stick pushrod attach, that would really help.
I want to make sure that the maximum control swing will move the servo arm less than +/- 50 degrees (Trio maximum).
Thanks for any help,
dave
It looks like the SafeAir1 pushrod attaches to the bellcrank using the same bolt as the control stick pushrod (hereafeter called the "bellcrank bolt"). My question involves the maximum control swing at this point.
The Trio manual specifies a maximum of 2.4 inches (peak-to-peak) control movement, less if you use one of the inner servo arm holes. I don't have my wings attached, but it looks to me like the bellcrank bolt will move more than that. I moved my aileron over the range Vans specifies and I got about 3 inches of swing at the bellcrank bolt.
To get under the 2.4 inches it seems to me that one would have to drill a new hole in the bellcrank, about 3/4 inches closer to the pivot?
Am I all wet here? If someone has a 9/9A and could measure the swing of the bellcrank at the control stick pushrod attach, that would really help.
I want to make sure that the maximum control swing will move the servo arm less than +/- 50 degrees (Trio maximum).
Thanks for any help,
dave