don’t forget that you can use 2 of the VEX motors… although I am not sure how you power them at this point… they will only get 5 volts from the sidecar so you would have to downgrade their rating (which is based on 7.2 volts)

they are continuous rotation and could be geared to gain advantage…
They are really good little motors… and much more robust than any servo that fits the FIRST guidelines…and they are very similar to servos in size and shape

These are not the old VEX motors … these are new and more powerful…
worth a try

I need a servo because I will be rotating something 90-135 degrees and it has to be precise every time. If my team gears a continuous rotation motor to be practical and accurate within that range of motion it will take too long to actuate, and would require an encoder with PID programming to set the position in the program (a large task for a team with one seasoned programmer and one beginning programmer).

First: It doesn’t matter what I think. It matters what the inspector at your event thinks.

That said I think it would be very useful for you to look at the blue box accompanying the rule, which specs out how to calculate the power for FRC applications:

Servo Max Power Rating = (Stall Torque) X (No Load Speed)
(emphasis mine)

Yes, that is true, as I recall the curves. But, the GDC has seen fit to go straight for no-load speed and stall torque, so for this application, we don’t divide by 4. If I remember correctly, there was some to-do about this last year or the year before when there wasn’t a power definition at all in the rules.

You will get 6 volts from the digital sidecar PWM plug (with the servo jumper installed)

It appears that you are using the electrical power for your calculations. As others posted, there is a specific definition of power that [R48] requires. When I apply that calculation, both servos would be above 4 watts.

I’m confused about the units here. If torque is measured in oz/in and speed in rpm how does the result in watts? I’m looking a servo that has 172oz/in of torque and 72rpm no load. Is that legal?

Watts have units of N-M/s (among many). Convert your torque to N-M, and your rotation rate to radians/sec, (remember that radians are dimensionless) and it all works out. By my calculation, those servos are around 9W, using FIRST’s formula.