joe1l
06-01-2012, 01:07 PM
This should be made sticky.
First let me say this currently only applies to Futaba TX with YGE ESC's plugged in directly to a Futaba RX or CGY750 THe (throttle port). It does not apply to Vbar gov or SK720 gov.
The issue causes a mis-alignment of TX Throttle % to the actual ESC throttle %.
The misalignment causes a non linear power increase based on throttle position. This is most noticeable when comparing RPM change from 60% to 80% and 80% to 100%.
To fix the issue you should re-program your motor stop/motor full using this modified instruction subset:
1.) Programming your TX Endpoint Range with YGE plugged into CGY750
The process for programming your YGE ESC with PROG CARD using a Futaba TX is identical to the original YGE instructions with the exception of the TX throttle curve used for programming the YGE MOTOR STOP and FULL SPEED. In your TX set a temporary linear throttle curve where low stick =1% and high stick is =99%. Using YGE Programming card Set YGE MOTOR STOP at low stick (1%) and FULL SPEED at high stick (99%).
Calibrating your Endpoints
Calibrating YGE Endpoints (necessary for External Gov)
2.) Once Programming is complete you wlll need to calibrate your low and high endpoints to ensure throttle accuracy necessary for future External gov operation.
Set the same linear throttle curve used during programming with low stick =1% and high stick=99%.
a.) Low endpoint calibration: Make sure ESC is powered down and throttle cable plugged into RX/FBL throttle channel. Set stick to low position (1%) Go to TX Endpoint menu and reduce low enpoint to 50%... Leave TX in Endpoint menu and power up ESC with lipo. (ESC will initialize lipo count but should not of armed yet). Slowly increase Low endpoint 1 point at at time untill the ESC audiably arms. Once ESC is armed...stop increasing endpoint on TX( no buffer endpoint necessary)... Disconnect power on ESC. Low endpoint is now calibrated... (set low throttle back to 0%).
b.) High Endpoint calibration. must be done on bench without blades or motor pinion. Power up ESC and increase throttle to 99% and go to TX endpoint menu. IF ESC LED is off...decrease the High Endpoint until LED turns back on. 99% throttle = Last endpoint where ESC LED is still lit.
YGE instructions have always suggested that with some transmitters the range would need to be adjusted.
The speed controller has a fixed throttle curve setting, so
that with all usual transmitters the stop and full power points
are linearly connected. With all programmable transmitters,
the throttle range should be set to default (±100%), the
center point set to zero and throttle trim enabled.
Nevertheless, with some transmitter types the range needs
to be adjusted. For that the throttle endpoints have to be set
so that one notch before lowest stick position the motor is
stopped and that one notch before full power the motor is
actually at full power. Full power is indicated by the LED that
is completely turned off.
First let me say this currently only applies to Futaba TX with YGE ESC's plugged in directly to a Futaba RX or CGY750 THe (throttle port). It does not apply to Vbar gov or SK720 gov.
The issue causes a mis-alignment of TX Throttle % to the actual ESC throttle %.
The misalignment causes a non linear power increase based on throttle position. This is most noticeable when comparing RPM change from 60% to 80% and 80% to 100%.
To fix the issue you should re-program your motor stop/motor full using this modified instruction subset:
1.) Programming your TX Endpoint Range with YGE plugged into CGY750
The process for programming your YGE ESC with PROG CARD using a Futaba TX is identical to the original YGE instructions with the exception of the TX throttle curve used for programming the YGE MOTOR STOP and FULL SPEED. In your TX set a temporary linear throttle curve where low stick =1% and high stick is =99%. Using YGE Programming card Set YGE MOTOR STOP at low stick (1%) and FULL SPEED at high stick (99%).
Calibrating your Endpoints
Calibrating YGE Endpoints (necessary for External Gov)
2.) Once Programming is complete you wlll need to calibrate your low and high endpoints to ensure throttle accuracy necessary for future External gov operation.
Set the same linear throttle curve used during programming with low stick =1% and high stick=99%.
a.) Low endpoint calibration: Make sure ESC is powered down and throttle cable plugged into RX/FBL throttle channel. Set stick to low position (1%) Go to TX Endpoint menu and reduce low enpoint to 50%... Leave TX in Endpoint menu and power up ESC with lipo. (ESC will initialize lipo count but should not of armed yet). Slowly increase Low endpoint 1 point at at time untill the ESC audiably arms. Once ESC is armed...stop increasing endpoint on TX( no buffer endpoint necessary)... Disconnect power on ESC. Low endpoint is now calibrated... (set low throttle back to 0%).
b.) High Endpoint calibration. must be done on bench without blades or motor pinion. Power up ESC and increase throttle to 99% and go to TX endpoint menu. IF ESC LED is off...decrease the High Endpoint until LED turns back on. 99% throttle = Last endpoint where ESC LED is still lit.
YGE instructions have always suggested that with some transmitters the range would need to be adjusted.
The speed controller has a fixed throttle curve setting, so
that with all usual transmitters the stop and full power points
are linearly connected. With all programmable transmitters,
the throttle range should be set to default (±100%), the
center point set to zero and throttle trim enabled.
Nevertheless, with some transmitter types the range needs
to be adjusted. For that the throttle endpoints have to be set
so that one notch before lowest stick position the motor is
stopped and that one notch before full power the motor is
actually at full power. Full power is indicated by the LED that
is completely turned off.