slash 4x4 PE running hot!
#1
slash 4x4 PE running hot!
I have a slash 4x4 PE that seems to run WAY TO HOT!!! It is getting close to 200* on motor and 160* on ESC i have tried everything from 13t pinion and 50t spur to 23t pinion and 50t spur for gearing. It has no binding in the drivetrain, i have checked all the bearings(and even replaced them just to rule out bad bearings), I have also installed a fan on the ESC and TWO fans with heat sink on the motor for a total of 3 fans. Running on 3s with all different combos i have been aible to make less than 10* change in temp acoss a run time of 10 min. With outside temp of 35*F running on the concrete street in front of my house i only get 8-10 min run times till the thing is at these hot temp and wants to go into thermo shut down! I contacted Traxxas there answer was for $45 i could send the ESC and motor back to them. Wait 2-3weaks and mabe that would fix it. Is that realy the best answer? I just got this thing! It doesnt have 2 hours of run time on it! I was wondering is there a motor with more torque out there i can run with my traxxas ESC? That could cure my dilemna. I was kinda thinking the 4x4 drivetrain is to much stress on the VXL with 3s. Im new to electic but have ran nitro for years so i dont know what the specs mean on these brushless motors. Any help would be greatly appreciated!!! Sorry for the long post! and THANKS!!!!
#2
R/C Tech Elite Member
iTrader: (114)
I have a slash 4x4 PE that seems to run WAY TO HOT!!! It is getting close to 200* on motor and 160* on ESC i have tried everything from 13t pinion and 50t spur to 23t pinion and 50t spur for gearing. It has no binding in the drivetrain, i have checked all the bearings(and even replaced them just to rule out bad bearings), I have also installed a fan on the ESC and TWO fans with heat sink on the motor for a total of 3 fans. Running on 3s with all different combos i have been aible to make less than 10* change in temp acoss a run time of 10 min. With outside temp of 35*F running on the concrete street in front of my house i only get 8-10 min run times till the thing is at these hot temp and wants to go into thermo shut down! I contacted Traxxas there answer was for $45 i could send the ESC and motor back to them. Wait 2-3weaks and mabe that would fix it. Is that realy the best answer? I just got this thing! It doesnt have 2 hours of run time on it! I was wondering is there a motor with more torque out there i can run with my traxxas ESC? That could cure my dilemna. I was kinda thinking the 4x4 drivetrain is to much stress on the VXL with 3s. Im new to electic but have ran nitro for years so i dont know what the specs mean on these brushless motors. Any help would be greatly appreciated!!! Sorry for the long post! and THANKS!!!!
#3
Tech Master
I agree-200 is way too hot! I've run 3s in my Slash and it literally cooks (but it does literally "fly"-heh heh heh) 2s must be the way to go just as blade329 says. I have a VLX-ESC that needs to go to Traxxas but $45 bucks is $45 bucks and having to wait 3-4 weeks, well...
#5
I dont have any 2s all i have is 2 5000mah 3s 30c batteries. I will go to local hobby shop tomarrow and get a 10t pinion and see how it works, but it is starting to get to the point of gearing so low that it is almost like driving a old slow brushed car!
#6
200 is way to hot..The glue in the motor may start breaking loose if you keep running that temp (been there myself). Gear down or go to 2cell.
#8
I've read that in order to use a 10T or 9T pinion it requires some modding in order to mesh properly, can anyone confirm and explain what needs to be done?