motor "chattering" problem , help
#1
motor "chattering" problem , help
hey everyone,
got a slash 4x4 lcg , burnt up my vel motor at track and shop owner sold me a sensored smc 8.5t brushless. I soldered the joints and hooked it up (14t pinion , 52t spur).....but it wont get going.....it putts around and chatters and shakes , i tried adjusting the timing dial on end of motor every which way but does nothing....it came with sensor wire but my vxl-3s has no port
are these compatible ???
any help would be appreciated
thx,
Jon
got a slash 4x4 lcg , burnt up my vel motor at track and shop owner sold me a sensored smc 8.5t brushless. I soldered the joints and hooked it up (14t pinion , 52t spur).....but it wont get going.....it putts around and chatters and shakes , i tried adjusting the timing dial on end of motor every which way but does nothing....it came with sensor wire but my vxl-3s has no port
are these compatible ???
any help would be appreciated
thx,
Jon
#2
Tech Lord
iTrader: (52)
hey everyone,
got a slash 4x4 lcg , burnt up my vel motor at track and shop owner sold me a sensored smc 8.5t brushless. I soldered the joints and hooked it up (14t pinion , 52t spur).....but it wont get going.....it putts around and chatters and shakes , i tried adjusting the timing dial on end of motor every which way but does nothing....it came with sensor wire but my vxl-3s has no port
are these compatible ???
any help would be appreciated
thx,
Jon
got a slash 4x4 lcg , burnt up my vel motor at track and shop owner sold me a sensored smc 8.5t brushless. I soldered the joints and hooked it up (14t pinion , 52t spur).....but it wont get going.....it putts around and chatters and shakes , i tried adjusting the timing dial on end of motor every which way but does nothing....it came with sensor wire but my vxl-3s has no port
are these compatible ???
any help would be appreciated
thx,
Jon
-Cpt.
Last edited by Cpt.America; 09-29-2015 at 09:53 AM.
#3
I've done it, with a sensored Turnigy Trackstar and HW esc, worked fine. I did discuss it with someone here beforehand and they said the motor just defaults back to -0- timing without the esc timing input. I would say there is something wrong with that esc. I also have a LRP 17.5 sensored motor here that runs fine on a Mamba Max esc without sensor. I would guess the esc mosfets are damaged. They are the "timing" of the esc. They switch the fields in the motor windings to start the motor and keep it running.
#4
I've done it, with a sensored Turnigy Trackstar and HW esc, worked fine. I did discuss it with someone here beforehand and they said the motor just defaults back to -0- timing without the esc timing input. I would say there is something wrong with that esc. I also have a LRP 17.5 sensored motor here that runs fine on a Mamba Max esc without sensor. I would guess the esc mosfets are damaged. They are the "timing" of the esc. They switch the fields in the motor windings to start the motor and keep it running.
#6
the "pro" who sold it to me at the track , said you can do either
well i guess i will just throw it into the parts bin for a later day (when i upgrade the esc)
thx
#7
Tech Elite
iTrader: (10)
I've done it, with a sensored Turnigy Trackstar and HW esc, worked fine. I did discuss it with someone here beforehand and they said the motor just defaults back to -0- timing without the esc timing input. I would say there is something wrong with that esc. I also have a LRP 17.5 sensored motor here that runs fine on a Mamba Max esc without sensor. I would guess the esc mosfets are damaged. They are the "timing" of the esc. They switch the fields in the motor windings to start the motor and keep it running.
I agree, sounds like the motor you got wasn't designed to be run without the sensor hooked up. The slowness and cogging you're getting is a classic sign of a sensor issues. If you put a good motor on it and know it's not the speed control then the only other logical conclusion is the motor. My guess is the motor requires a sensored speed control.
#11
Tech Champion
iTrader: (282)
Read the specs. Says sensorless motor compatibility.
http://www3.towerhobbies.com/cgi-bin...&I=LXEJSG&P=ML
http://www3.towerhobbies.com/cgi-bin...&I=LXEJSG&P=ML
#12
Tech Master
iTrader: (4)
Auto detects brushed, brushless or sensored brushless motor types
Compatible with 4-cell NiCd or NiMH batteries up to 3S LiPo packs
Sensor phase detection protects against improperly wiring aftermarket
sensored motors
Sensored motor backup protection switches to sensorless operation if
motor sensor fails
SPECIFICATIONS
Input Voltage 4.8 - 11.1V (4-9 NiMH, 2S-3S LiPo)
Motor Compatibility: Sensorless Brushless
Motor Limit: None
Seems to say a lot of things ...
Compatible with 4-cell NiCd or NiMH batteries up to 3S LiPo packs
Sensor phase detection protects against improperly wiring aftermarket
sensored motors
Sensored motor backup protection switches to sensorless operation if
motor sensor fails
SPECIFICATIONS
Input Voltage 4.8 - 11.1V (4-9 NiMH, 2S-3S LiPo)
Motor Compatibility: Sensorless Brushless
Motor Limit: None
Seems to say a lot of things ...
#13
Tech Elite
iTrader: (10)
The motor is sensored, and therefore it probably won't work properly with a sensoreless speed control. Everyone keeps saying things about the speed control Yes, it will operate a sensored or sensorless speed control but it doesn't say anything about a sensored motor working with it. All of his issues he's described are classic sensor issues. More than likely the motor that he got won't work without having the sensor wire hooked up properly, which is impossible on a sensorless speed control. Just because the speed control will work with any sensored or sensorless motor doesn't mean the motor will work with any sensor or sensorless speed control.
#14
My old vxl esc's have sensor ports.
Click the link in one of the above posts and look at the pic...that little blue rectangle surrounded by black border should be the sensor port.
Pull the plug. Hook up a sensor cable from there to the motor and give it a shot again.
Click the link in one of the above posts and look at the pic...that little blue rectangle surrounded by black border should be the sensor port.
Pull the plug. Hook up a sensor cable from there to the motor and give it a shot again.