The HV 8717 runs on straight 7.4 and the speed is .06
The standard 8717 running on 6 volt the speed is .07?
Here is the JR link to the standard JR 8717;
Here is the link to the JR HV 8717;
The "Depends" is the level your flying of your flying skills.
with a difference of .01 that's faster than you blink your eyes!
If it's needed to get by till you can balance all three Cyclic servos I would say yes you can get by with it! If you fly it and find it's affecting your flying by the .01 difference, change/balance the servos on the cyclic so they all match...
Note; Now I know guys at my club that run the standard 8717 on straight 7.4V lipo's, though not recommended by JR there is no reference to "How" fast it makes the servo. It could make the standard 8717 .01 faster?
T.O.R.C.H.S. Orlando Member