[Espeefan]

Clint, most ESCs work just like a servo, except many have to calibrated, before they function properly. For that, you may have to follow the instructions in the manual. If the ESC works with your Futaba radio, then you probably have something going on with the JR radio programming. What that would be, I'm not sure. I run Futaba radio gear in all my models, so I can't help you to much with the JR stuff. I'm pretty much out of ideas.