jrowles91

iTrader: (9)

So I'm having a strange problem with my Slash. It has the Hobbywing SC8 120a ESC.

Upon full throttle from a stop its very sluggish for maybe 1 full second before the normal torque you would expect from the motor. Sometimes also when stopped and hit full throttle from a stop, throttle goes dead but steering works until I let off and go again.

I reset the ESC already, updated it to the latest firmware and calibrated my radio again just to be certain. I also changed the motor to eliminate that. Radio has also been swapped out.

Here is a video of the truck with no drag (its to dark out to show it driving). In the video each time I accelerate it is instant full throttle. The delay is exaggerated when on its wheels with the drive train weighted.
http://youtu.be/x8XVNuf6w5k

fq06

iTrader: (12)

Is there punch control or some current limiter set into it? Or is it unrestricted?

jrowles91

iTrader: (9)

As far as I am aware there is no current limit setting. Punch control I believe is set at 4 or 5 from factory and has not been changed

huzzler

iTrader: (1)

Does the truck roll easily with motor backed off spur gear? Seems like either something is binding up or drag brake on esc is set high. I know the rear driveshaft bearings are notorious for going out on those slashes.

jrowles91

iTrader: (9)

Yes it rolls easy however, the center shaft is bent and does rub on the chassis. Doesn't cause any binding though. Drag brake is set to 5%. I'm not sure what to do. At the start of races I'm immediately behind because of it.

froggie22

iTrader: (4)

I had the same issue with a HW 120A v2.1 and it turned out to be the sensor cable. I could see no signs of damage on the cable so I assumed it was something else.
The issue didn't happen all the time either, it would come and go.

As soon as I switched out the sensor cable for a new one I never had the problem again.
Tested the bad sensor wire out on another vehicle and it caused issues too.

jrowles91

iTrader: (9)

This particular ESC isn't sensored so I'm kind of at a loss. I think I might change the rotation of the motor and switch it on my radio. I seem to remember the instructions saying to put the radio in reverse.

k-weaver

iTrader: (1)

What are the specs on your batts? My buddy had similar issues with a castle creations setup running on NiMh. Let him use my 40c LiPo and all the problems went away.

jrowles91

iTrader: (9)

They are all fairly new (between 5 and 10 charges) and 30c for the one shown I'm the video and 40c on others that have the same issue on the car. All over 5000mah also.

huzzler

iTrader: (1)

Wow. That is really weird. Could just be possible it is a bad esc. Have you tried asking in the Hobbywing thread?

huzzler

iTrader: (1)

I see you have allready.

jrowles91

iTrader: (9)

Yeah I remembered about it after posting here. Hopefully they answer. A lot of unanswered questions there.

homershoots

Try turning off drag brake and set punch to 9 and timing to maximum. Also after changing any settings always recalibrate your radio. Also if your radio has any abs or traction control settings make sure they are off.

hesh

Try reinstalling firmware on speedo, then recalibrate and setup.

cotto68

iTrader: (11)

Going by the tube Vid that looks like a serious amount of drag brake.. i could be wrong but that's what my eyes tell me. What motor are you running?