2LikesHobbywing Xerun V3
11-14-2013, 07:12 AM
#316
... reflashing the ESC didn't improve the problem I had with inadequate braking power, although I noticed that the motor used seemed to affect overall brake strength. I ran a Thunder Power 9.5 in my TC this weekend, and had pretty strong brakes. When I swapped the 9.5 for a Murfdogg 10.5, I had virtually no brakes whatsoever. ESC was recalibrated after each motor swap. One thing I noticed after taking both motors apart is that the rotor is closer to the sensor board in the TP; would anyone know if the distance between the rotor and the sensors determines how much braking strength is available?
11-14-2013, 11:12 AM
#318
Tech Master
iTrader: (28)
Hobby Wing Justock ESC question:
Hobby Wing Justock ESC question:
I installed a justock ECS for use in a 21.5 F1 car with a Futaba 4PKS. The ESC seems to have very limited bottom end (acts as if a torque limiter is on?). I've tried reprogramming the ESC, switching motors, sensor cables, switching radio models and even purchased the programming module with the hope of improving acceleration off the corners, but nothing has improved.
To that end, is this inherent with this ESC model or is it possible that I have a faulty ESC?
I installed a justock ECS for use in a 21.5 F1 car with a Futaba 4PKS. The ESC seems to have very limited bottom end (acts as if a torque limiter is on?). I've tried reprogramming the ESC, switching motors, sensor cables, switching radio models and even purchased the programming module with the hope of improving acceleration off the corners, but nothing has improved.
To that end, is this inherent with this ESC model or is it possible that I have a faulty ESC?
11-14-2013, 11:49 AM
#319
Hobby Wing Justock ESC question:
I installed a justock ECS for use in a 21.5 F1 car with a Futaba 4PKS. The ESC seems to have very limited bottom end (acts as if a torque limiter is on?). I've tried reprogramming the ESC, switching motors, sensor cables, switching radio models and even purchased the programming module with the hope of improving acceleration off the corners, but nothing has improved.
To that end, is this inherent with this ESC model or is it possible that I have a faulty ESC?
I installed a justock ECS for use in a 21.5 F1 car with a Futaba 4PKS. The ESC seems to have very limited bottom end (acts as if a torque limiter is on?). I've tried reprogramming the ESC, switching motors, sensor cables, switching radio models and even purchased the programming module with the hope of improving acceleration off the corners, but nothing has improved.
To that end, is this inherent with this ESC model or is it possible that I have a faulty ESC?
11-14-2013, 12:18 PM
#320
Madjack I run Juststock in Gt Touring car that uses 21.5 motors. I have good lowend I think you may have a motor or a gearing issue. I do have my DRRS on 9 where is your DRRS set at.
Hobby Wing Justock ESC question:
I installed a justock ECS for use in a 21.5 F1 car with a Futaba 4PKS. The ESC seems to have very limited bottom end (acts as if a torque limiter is on?). I've tried reprogramming the ESC, switching motors, sensor cables, switching radio models and even purchased the programming module with the hope of improving acceleration off the corners, but nothing has improved.
To that end, is this inherent with this ESC model or is it possible that I have a faulty ESC?
I installed a justock ECS for use in a 21.5 F1 car with a Futaba 4PKS. The ESC seems to have very limited bottom end (acts as if a torque limiter is on?). I've tried reprogramming the ESC, switching motors, sensor cables, switching radio models and even purchased the programming module with the hope of improving acceleration off the corners, but nothing has improved.
To that end, is this inherent with this ESC model or is it possible that I have a faulty ESC?
11-14-2013, 02:44 PM
#321
Tech Master
iTrader: (28)
I've received some instructions & updates from HW, so hopefully that will help out the issue. Just need to find the time to load and test!
11-14-2013, 04:27 PM
#322
Couple of things to check....
Set your reverse speed to 100%. I know you wouldn't be using reverse, but this can sometimes help with weak brakes.. although I've mainly heard of this on stock motors rather than mods.
Also, when recalibrating the esc, make sure that all end-points are set to 100% on the transmitter, not more or less, and that the trims are all at zero too.
Failing all that, just check the motors are all ok, if you can, switch out the sensor boards and cables, and make sure there aren't any shorts on the terminals.
Oh, and the esc turning off issue, if your setting brake endpoints and holding the brake, the esc has a auto turn-off function if the braks are held for (I think) 5 seconds.
Give those things a try and let us know.
HiH
Ed
11-14-2013, 05:45 PM
#323
Hobby Wing Justock ESC question:
I installed a justock ECS for use in a 21.5 F1 car with a Futaba 4PKS. The ESC seems to have very limited bottom end (acts as if a torque limiter is on?). I've tried reprogramming the ESC, switching motors, sensor cables, switching radio models and even purchased the programming module with the hope of improving acceleration off the corners, but nothing has improved.
To that end, is this inherent with this ESC model or is it possible that I have a faulty ESC?
I installed a justock ECS for use in a 21.5 F1 car with a Futaba 4PKS. The ESC seems to have very limited bottom end (acts as if a torque limiter is on?). I've tried reprogramming the ESC, switching motors, sensor cables, switching radio models and even purchased the programming module with the hope of improving acceleration off the corners, but nothing has improved.
To that end, is this inherent with this ESC model or is it possible that I have a faulty ESC?
11-22-2013, 03:01 AM
#325
12-12-2013, 01:03 PM
#327
The rotor of any motor must be shimmed correctly and that means the rotor must be as close to the sensor board hall sensors as possible or errors will occur like sensorless mode ,weak brakes etc .
12-12-2013, 07:57 PM
#328
http://speedyrc.blogspot.com.au/2013...otor-open.html
Info on correct motor shimming
idbdoug
12-12-2013, 08:23 PM
#329
To add info to cobraracing post:
http://speedyrc.blogspot.com.au/2013...otor-open.html
Info on correct motor shimming
idbdoug
http://speedyrc.blogspot.com.au/2013...otor-open.html
Info on correct motor shimming
idbdoug
I'm using the ESC in an open touring class, so I could install a stronger rotor in the motor and see what happens... I'll report my findings after this weekend's race.
12-12-2013, 09:21 PM
#330
Tech Fanatic
iTrader: (27)
I had this same problem with several HW ESCs (from v2.1s to v3.1s) and a Revtech 17.5 motor. Unfortunately, I never resolved that problem with a Revtech motor. I had to switch motors in order to gain braking. I STILL don't know why my Revtech 17.5 had almost 0 brakes, even on full 100% brakes.