Originally posted by bgi [/B]
1) You lose servo resolution and torque if your arms require you to cut down ATV. So try to keep ATV up to 100% or more. More ATV means more torque and more resolution but slightly longer transit time. It's a trade-off
How does servo resolution effect TORQUE?
2) Assuming you want to reduce the surface travel, move the pushrod out to the further clevis positions on the surface. If you run out of positions there, then use a longer surface arm or start coming in closer to the pivot on the servo arm. Either adjustment will give you more power/torque on the surface and vice versa.
Lets see some numbers. I have a 100oz-in torque rated servo with a 1" arm.
.75" servo arm nets 133ozs of FORCE
1.0" servo arm nets 100ozs
1.25" servo arm nets 80ozs
.75"SA x .75"CA nets 100oz-in
.75"SA x 1.0"CA nets 133oz-in
.75"SA x 1.25"CA nets 166oz-in
1.0"SA x .75"CA nets 75oz-in
1.0SA x 1.0"SA nets 100oz-in
1.0"SA x 1.25"CA nets 125oz-in
1.25"SA x 1.25"CA nets 100oz-in
1.25"SA x 1.5"CA nets 120oz-in
Then there is this thing known as the Final Ratio...