Servo Angle

[rc404]

Sorry for the simple questions, but I can't seem to find the answers on-line. I want to know for Futaba servos on a Futaba system with default throw (100% ATV/ATR), what angle does the servo go through for full stick deflection? And what pulse length does this correspond to?

thanks

[bearcreek]

I think it is typically 0-90 degrees for full stick deflection. And this is 1-2 ms, but it probably varies.

[rc404]

I think it is typically 0-90 degrees for full stick deflection. And this is 1-2 ms, but it probably varies.
Full stick deflection does not move the servo 90 degrees from center. Its more in the range of 45-60 deg from center, at least for all the radio systems I've seen.

[mike50]

Full stick deflection does not move the servo 90 degrees from center. Its more in the range of 45-60 deg from center, at least for all the radio systems I've seen.
It is a total of about 90 degrees from one extreme to the other...about 45 degrees each side of center.

[rc404]

I think it is typically 0-90 degrees for full stick deflection. And this is 1-2 ms, but it probably varies.
Sorry I misread. Was thinking of 0 as center but clearly you meant 0 as 1 ms, full stick deflection in one direction for a motion relative to center of +/-45.

Thanks.

[rc404]

So now a new question. If the total motion is typically 90 deg, anybody know why servo speeds are typically quoted as time to transit 60 degrees?

[Acetronics]

Hi, RC

The 60 degrees instead of 90 are obvious : to show the best value ... the servo must have reached its maximum speed, and, as reaching the desired position reduces the speed, there must be some travel left ...

Now, why 60 degrees instead of 50 or 70 ... justs let's suppose because Sin 30° = .5 ... Easier to measure !!!

Alain