R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Thread Tools Search this Thread
Old 05-18-2011, 09:54 AM   #1
Tech Addict
Join Date: Dec 2008
Posts: 634
Trader Rating: 28 (100%+)
Default Problem calibrating throttle on DX3S

Hi guys,

I have a problem that's driving me nuts, and I've been trying for a couple of hours to solve it to no avail.

Anyway, I have a new Spektrum DX3S and I'm trying to bind a Hobbywing Ezrun 13t/35A system to the radio.

The problem is that despite following the instructions for the speedy to the letter, once the ESC is bound the throttle races when the trigger is neutral. The ESC instructions state to reverse the throttle on the radio, disable ABS, and set the EPA/travel to 100 per cent. I've done all of this...as mentioned once bound, the motor revs pretty hard. Only when I apply full brake on the transmitter does the motor stop. I've even set the throttle trim to B50, which slows the motor down but won't bring it to a complete stop.

Am I missing a basic but vital link here? I have a race event in 2 days which I'm trying to prepare for, so I'm beginning to see red!

Thanks in advance for any answers you might have.


stephenianjames is offline   Reply With Quote
Old 05-18-2011, 10:20 AM   #2
Tech Master
Join Date: Feb 2009
Posts: 1,920
Trader Rating: 1 (100%+)

try reversing the throttle on the transmitter , this is how i hd to run mine all the time
sidecarphil1 is offline   Reply With Quote
Old 05-18-2011, 10:26 AM   #3
Tech Adept
redbarton's Avatar
Join Date: Jan 2006
Posts: 230
Trader Rating: 3 (100%+)

With Spektrum and various speed controls, I have sometimes found it helped to max out the throttle endpoint to 125% both ways. ESC's seem to calibrate better with this setting.
redbarton is offline   Reply With Quote
Old 05-19-2011, 03:12 AM   #4
Tech Addict
Join Date: Dec 2008
Posts: 634
Trader Rating: 28 (100%+)

Thanks guys for the reply.

I had all the adjustments on the transmitter done fine...i wasn't calibrating the ESC in the right order (ie neutral, forward then reverse)...instead I was doing forward, reverse and neutral...I've done this kind of thing alot before but was having a mental blank.

Thanks again for your responses.


stephenianjames is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Viper R/C Solutions - A New Line of Innovative Power systems! mini-dub Radio and Electronics 1532 04-28-2017 05:09 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT -7. It is currently 12:42 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net