Hi,

Just wondering how people are mixing in for knife edges? I need to hold the aileron and elevator to keep it at 90 degrees. Do people program to a switch like dual rates? Or is it more like the trainer switch (Where you have to hold the switch)?

Thanks

hi there
you need to use (two) free mixers
one for rudder elev, one for rudder aileron
but it's not an exact science as different air speeds require different amounts of mix.
also, the mix is not linear, so the right amount for a simple K/E pass will not be the correct mix for a K/E loop.
everyone that I know leave the mixes on all the time but some may prefer to switch it on and off.

hope this helps

piroflip

If you have 5-point mixes like a Futaba 9C, you can set the rud-ail to "kick in" at varying amounts of rudder deflection. I've never needed much more than 5-7% rud-ail mix for roll coupling. I use my thumbs for any elevator adjustments. The rudder-ail mix can be set on all the time since its so little.

For the KE mix I use the low rate part of the ELEV. I use three different rate switches. One each for AILE,RUD,ELEV. A rarely use low rate on ELEV. So I put the mix there. The trainer switch I use for the spoileron mix. I think you will find that this changes for every flyer. What I am comfortable with you may not be. For example. My best flying buddy uses one three position switch for his rates. His AILE,RUD,ELEV have three rates but are all on one switch. He has his KE mix on a switch that he is comfortable flipping. We also both use fuel tubing. I have have a piece on the AILE and ELEV switches. This makes them easy to find without looking.
BTW we both use a 9C. The radio you have could make a difference in the set up.

David