Can you tell us what type of mix you are using on this?
It would be easiest to do by using a Curve mix. Set the Master as Throttle, the slave as your smoke pump channel, then at the bottom of the page One of your mix change, change Linear to point. Set the switch that activates this mix on page two and make sure the whole mix is active, then go back to page One and after you have made the mix Point instead of Linear, you can set the rate one at 0%, rate two at 0% ( or if you prefer the pump to activate here, set a rate), then start building in the amount of rate you would like.
I set mine at
Rate 1 = 0%
Rate 2 = 25%
Rate 3 = 50%
Rate 4 = 75%
Rate 5 = 100%
These are set to Switch C in the Down position, so unless Switch C is flipped forward, the pump does nothing.
Sincerely,
Krysta
Product Development & Support Specialist
Futaba Service Center USA
[email protected]