Steering servo slowing down while accelerating
 

Steering servo slowing down while accelerating...

I've had a problem with this in 3 different radios. AE XP2, XP3, and the HPI TF40.

I realize these are RTR radios, but in an effort to improve steering response, I've tried faster servos, Hitec (forget which model) and a Savox 1257TG.

Both servos exhibit the same problem. When sitting still, the servos are fast. When you slowly start moving, the steering slows way down, so bad that it's tough to get the car to go straight, the lag is so bad.

Anyone else have this problem? Is it just the radio being slow, ESC dragging too much power from the servos? Tried two different ESC also, AE and Hobbywing.

When I use the radios on VRC, they seem fine.


Thanks

sounds like the esc is not delivering enough power to the servo. could try adding a stand alone bec, which typically have higher amp output.

hmm good idea. ill try a separate receiver pack. thanks

castle bec is $20, cheap insurance from burning up you esc too.

Not only to protect the esc, but unloading some of the current demand can make it run slightly cooler. It seems, the more current that is run through an esc, 2S vs 4S/5S, the esc bec voltage can drop. I know that sounds backwards, but everything I have read backs it up. I run a UBEC on my EMaxx on 4S to ensure it doesn't brown out, I was having that issue when I first built the truck, because of the oversize tires I installed.
If you do install an external bec, just take a paperclick and push the terminal tab to release the red wire from the receiver channel 2 plug (esc plugin) and slide it out bend it back and tape it off or something. That's the powerfeed for the receiver from the esc bec and you don''t want the external ubec and the esc's bec both feeding the receiver. Does that make sense lol?
To connect my Ubec, I soldered it into the battery feeds to the esc, but make sure when you're done playing with the truck you unhook the batteries, because even if the esc switch is off, the Ubec will still drain power from the batteries since it's straight to them. The Ubec has a red led that tells you it's powered on.

You probably need something like this, or slightly higher amperage.
http://www.hobbyking.com/hobbyking/s...Reduction.html

You could also just get a short extension and pull the red wire on that, making life easy if you use a castle link or hotwire to talk to your ESC?

May also be able to simply get away with using a glitch buster...