Throttle management on a buddy box can be hair raising. When I was learning, we found that the buddy box didn't follow the TX on the throttle, IE if I could get full throttle on the buddy box, I couldn't get it to idle or vise versa. We finally came to compromise and all went well until one day I had made a great landing and taxied it back to the start line and ask my instructor to kill the engine. He released the trainer switch but had forgot to cut the throttle on the TX and the Mag 91 jumped instantly to full throttle and into the netting. For the next couple days, I would aske if he had the throttle down on the taxi back to the line. I soloed just after that so it wasn't a problem for me for long.

Just some advise to the new instructors. Once the plane has landed, chop the throttle on the TX if the student still has the plane.

Don