Hi Robert,

Thanks for this support forum. It has answered many of my questions about setting up my first large gas aircraft (a 30% Yak 54). I plan to use in my setup 2 separate Lithium Ion packs through 2 separate SuperSwitch/Universal Charge Jacks (for failsafe and dual battery functionality) into a SuperReg and then into a PowerExpander Sport. I see that the PowerExpander has multiple outs to drive multiple servos on one channel. My question is this: Unless I use an Equalizer II these multiple servos would not necessarily be balanced or evenly centered, right?

The Yak I am building is fairly simple; one servo per aileron, one servo for the pull/pull rudder, and 2 servos for the split elevator. I understand that the elevator on this Yak is very sensitive to asymmetrical centering and throw - hence my concern and question. Thank you again for your great products Robert!


Best Regards,

Dave Killmer

Hi Dave,
Thanks for the feedback about the forum. On rudder I would suggest using an Equalizer II. The way I would recommend doing this for the most servo power is as follows. First run one servo straight to the rudder output of the PowerExpander. Then run the other servo through an Equalizer II. At first leave the Equalizer unplugged and use your transmitter to center and set throws on the servo connected directly to the PowerExpander. Then hook up the Equalizer and use it to match the second servo to the first servo. This method puts both servos on its own, dedicated connection. You will get more power this way than running both servos off the Equalizer becuase you are not taking the two leads from the servos and necking them down to the single lead of the Equalizer II. Please let me know if you have any more questions.

Robert,


Thanks for your quick reply. Your method makes great sense. This setup seems to be the right mix of power redundancy and light weight. Thanks again for your help.


Best Regards,

Dave Killmer