The ESC above mentioned does not work with Futaba 7c & receiver R617 FS. Electric motor does not run.
However, if i replace that ESC with another of 20A BEC, everything works well.
Not finished, now, if i replace the Futaba 7c with the Tunegy 9X, plus receiver 9X8C, the 50A Hobby King ESC works.
Am I missing some critical set up on futaba 7C? Find nothing on the Futaba's manual.
The 40A ESC says it is programable.
Any idea of what is going on here?

Thanks, for any help.