I have a Parkzone se 5a and I need some instructions and advice. I know about dual rates but I am really foggy about servo travel endpoints. I have a tactic ttx650 and the servo travel endpoints are defaulted at 100%. The tx manual is not very clear at all. Thanks

Removed - mine is the Horizon Hobby e-flight SE5a

What do you want to know? Setting up servo throws means getting the mechanical linkages as close as you can to get the throws set the way the manual says to, and then tweak it the rest of the way by adjusting the end points. Then your dual rates are just a percentage of the throw you initially set up.

I've been having a problem with understanding the relationship between servo travel endpoints with dual rates. As I see it, dual rates are the % of what your travel endpoints are. If I set the travel endpoints to, lets say, 90%, then whatever dual rates I assign a particular servo is just the percentage of that travel. Is it best to keep the endpoints at default (100%) or lower it to 90%, as an example, then set up the dual rates? Why would you lower the travel endpoints at all? As you may read, I am still looking thru a glass darkly. This is my first foray into a 2.4 radio. Been using 72 Mz for years. I have a Tactic xxt650 and 624 receiver. Thanks.

Everybody has to start somewhere. The best way is to start with everything at maximum servo travel or, if there is binding at the maximum travel, as much as you can without binding. Use your linkages to get the throws set as close as you can. Chances are, unless you are looking for fairly hot control throws or are using extra long control horns at the surface, your throws will be too much at this point. Now turn down the end points to get the amount of control throw for high rates that you want. Then the last thing to do is set the dual rates up as a percentage of that high rate that you already set.

If you do it this way, you will be getting maximum torque from your servos, minimum stress on your hardware and servos, minimum current draw, and you'll be using the most teeth in your servo gears which minimizes gear wear. You'll also be giving your servo gears their best chance of avoiding damage in a crash. In the old days maximizing control resolution was also a benefit and still is, although with the fine control that any of the 2.4ghz radios have now that's really not a concern anymore.