RC Electric Off-Road Trucks, Buggies, Truggies and more Discuss electric RC off-road, buggies & trucks here. Also discuss brushless motors, speed controllers aka ESC's, brushed motors, etc

Uncontrollable B4.1

Reply
Old 12-19-2011, 02:09 PM
  #1
DriftingFast
Thread Starter
 
Join Date: Apr 2011
Location: Atlanta, GA
Posts: 148
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Uncontrollable B4.1

1 Week ago I upgraded both of my cars (TC4 and B4.1) to 2.4ghz. Since then I haven't been able to drive it because it goes backwards when I try to go forwards, vice versa, and it goes faster backwards than forwards. However I didn't have any trouble with my TC4.

Electronics
XP Digital SC450-BL ESC
Reedy 3300kV Brushless Motor
Futaba 4PL Transmitter
Futaba R2104GF Receiver

Possible Problems
I had to unplug the motor wires to clean the car.
The receiver/transmitter has to be setup.
DriftingFast is offline  
Reply With Quote
Old 12-19-2011, 02:26 PM
  #2
nitrosportsandrunner
 
nitrosportsandrunner's Avatar
 
Join Date: Aug 2007
Location: skowhegan, ME
Posts: 9,502
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1

sounds like you just need to swap 2 of the motor wires.
nitrosportsandrunner is offline  
Reply With Quote
Old 12-19-2011, 02:29 PM
  #3
DriftingFast
Thread Starter
 
Join Date: Apr 2011
Location: Atlanta, GA
Posts: 148
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1

The thing is that I do not know what order I should put them in; they came unlabeled.
DriftingFast is offline  
Reply With Quote
Old 12-19-2011, 02:43 PM
  #4
DriftingFast
Thread Starter
 
Join Date: Apr 2011
Location: Atlanta, GA
Posts: 148
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1

Ok...You were right...but it still goes faster backwards than forwards.
DriftingFast is offline  
Reply With Quote
Old 12-19-2011, 04:23 PM
  #5
nitrosportsandrunner
 
nitrosportsandrunner's Avatar
 
Join Date: Aug 2007
Location: skowhegan, ME
Posts: 9,502
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1


Quote:
ORIGINAL: DriftingFast

Ok...You were right...but it still goes faster backwards than forwards.
OK, put the motor wires back the way they were....
then...
change the reversing switch on the radio(the throttle channel) then recalibrate the ESC to the radio.
nitrosportsandrunner is offline  
Reply With Quote
Old 12-19-2011, 05:24 PM
  #6
dragnse7en
 
Join Date: Sep 2010
Location: Northampton, MA
Posts: 1,766
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1


Quote:
ORIGINAL: nitrosportsandrunner


Quote:
ORIGINAL: DriftingFast

Ok...You were right...but it still goes faster backwards than forwards.
OK, put the motor wires back the way they were....
then...
change the reversing switch on the radio(the throttle channel) then recalibrate the ESC to the radio.
+1 - You beat me to the punch; I was going to say the same thing

dragnse7en is offline  
Reply With Quote
Old 12-20-2011, 11:01 AM
  #7
DriftingFast
Thread Starter
 
Join Date: Apr 2011
Location: Atlanta, GA
Posts: 148
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1


Quote:
ORIGINAL: nitrosportsandrunner


Quote:
ORIGINAL: DriftingFast

Ok...You were right...but it still goes faster backwards than forwards.
OK, put the motor wires back the way they were....
then...
change the reversing switch on the radio(the throttle channel) then recalibrate the ESC to the radio.
I already tried that, it won't start if I do that. I have to have the throttle on normal, turn it on, and then put the throttle mode in reverse.
DriftingFast is offline  
Reply With Quote
Old 12-20-2011, 11:07 AM
  #8
nitrosportsandrunner
 
nitrosportsandrunner's Avatar
 
Join Date: Aug 2007
Location: skowhegan, ME
Posts: 9,502
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1

some ESC's only like the transmitter in norm or revs. sounds like yours likes normal.

so, i take it if you put the tx in norm, and program the ESC thats when you get the truck going backwards instead of forwards?


typically when you have an issue like yours its solved either by programing the ESC with the Tx in the opposite setting from what it was in...or just swapping 2 of the motor wires.

some ESC's have a "motor direction" setting. maybe yours does and it needs to be changed?
nitrosportsandrunner is offline  
Reply With Quote
Old 12-20-2011, 11:08 AM
  #9
ThunderbirdJunkie
 
ThunderbirdJunkie's Avatar
 
Join Date: Jul 2004
Location: Norwood, OH
Posts: 22,101
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1

You have to recalibrate the ESC if you reverse your throttle channel, as nitrosportsandrunner clearly stated.
ThunderbirdJunkie is offline  
Reply With Quote
Old 12-20-2011, 11:08 AM
  #10
DriftingFast
Thread Starter
 
Join Date: Apr 2011
Location: Atlanta, GA
Posts: 148
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Uncontrollable B4.1

I fixed it. First I reversed the throttle, then I reversed the steering, and last but not least I had to re-calibrate the throttle settings.
DriftingFast is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 06:09 PM.