technical question for RC gurus

[andyathome]

as promised heres an other average video.
have worked out the issues, because the sound card is running off the bypass valve when there is no stick movement the revs are high.
in order to shut sound card down I have to shut off pump and then use a stick, revs drop then use track movement and sound card shuts down

will see what happens with signal reverser, should be much eaysier to start up and shut down.

https://www.youtube.com/watch?v=Hprhm-bqzXs

cheers andy