lowen93 Posted March 14, 2014 Share Posted March 14, 2014 For my Mardave R12 I have fitted a Hobbywing Justock ESC, HPI 17.5 brushless and 4 cell Vapextech 5000mah battery. All are new, fully charged etc. Pictured below is the car: Plugged it all in and went to give it a try and found when accelerating it moves forward at an ok speed but only a certain percentage of full power, then after a second or so it suddenly allows you to accelerate at full power in a sudden burst whuch usually results in losing control. When it allows the full power the light shows to say it's on full throttle. I thought it could have been the gearing but this is still the case when holding the car off the ground to remove load from the motor. I changed the settings around like the punch, throttle position and voltage cut off thinking it could be the voltage protection dropping too low etc, but have plugged charged 6 cells in as well. Occassionally I can double tap the throttle to make it give full power almost instantly, if it has been to full power once and backed off but not gone to neutral it will allow full power instantly. Is this normal for this ESC or is there a lack of compatibility somewhere? Any help much appreciated! Quote Link to comment Share on other sites More sharing options...
davemate Posted March 14, 2014 Share Posted March 14, 2014 Needs setting up by the sounds of it, did you get a setup card with it?. If not read the setup instructions and set the punch to a higher value. Quote Link to comment Share on other sites More sharing options...
mugen mark Posted March 14, 2014 Share Posted March 14, 2014 recalibrate it,it wont hurt and check the cell count on the esc Quote Link to comment Share on other sites More sharing options...
The Dark Knight Posted March 14, 2014 Share Posted March 14, 2014 As said above, I'd try recalibrating it first. I run this esc in my blinky spec touring car, it's great Quote Link to comment Share on other sites More sharing options...
PurcyP Posted March 14, 2014 Share Posted March 14, 2014 Need to set your end points also looks like you are running unsensored which will also do this. Quote Link to comment Share on other sites More sharing options...
vrooom Posted March 14, 2014 Share Posted March 14, 2014 It sound like it has turbo boost feature on, but on just stock ESC? Quote Link to comment Share on other sites More sharing options...
The Dark Knight Posted March 14, 2014 Share Posted March 14, 2014 The Just Stock esc is blinky only out of the box. Quote Link to comment Share on other sites More sharing options...
Smoothybb Posted March 14, 2014 Share Posted March 14, 2014 I would have said it was soft start kicking in but if it's dedicated car ESC it should haven't it. I tried a heli ESC in a plane and had the same problem with delayed throttle from 0%. Punch setting didn't sort it? Sounds like it needs a recalibration or end points as has been suggested. Quote Link to comment Share on other sites More sharing options...
lowen93 Posted March 14, 2014 Author Share Posted March 14, 2014 (edited) The punch is currently set to Level9 which is max but comes at 7 and had the same effect. It has been adjusted using the push button on the ESC not a program card. The delay is as it came out the box even though I've changed some settings. Here's a video of what it is doing to help explain: http://youtu.be/75bR8wcasTw When on the ground this delay is a few metres of distance and I run on small tracks so need that low down power. I get full throttle travel as shown by the green light but my tourer that has a modelsport bl12 ESC that puts the light on instantly without a delay and i haven't seen any other cars do this so this has raised my uncertanty. Is the throttle what is meant by the calibration or is there another calibration? This is the motor as I'm not sure if it's sensored or not. http://www.hpiracing.com/en/part/101733 I haven't read anything in the instructions about soft start being in it. Hope this helps show the problem I have and thank you for the replies Edited March 14, 2014 by lowen93 Quote Link to comment Share on other sites More sharing options...
PurcyP Posted March 14, 2014 Share Posted March 14, 2014 (edited) its because its running unsensored get a sensor wire in the motor and esc one of these Edited March 14, 2014 by PurcyP 1 Quote Link to comment Share on other sites More sharing options...
lowen93 Posted March 14, 2014 Author Share Posted March 14, 2014 Seems silly now haha, plugged in the cable supplied with the motor and it flies along quite nicely as I had hoped for, should run well at tomorrow's racing. I think it was TheDarkKnight's tourer that made me go for a hobbywing ESC. Thank you everyone! Quote Link to comment Share on other sites More sharing options...
PurcyP Posted March 14, 2014 Share Posted March 14, 2014 and that is the difference between sensored and un sensored lol enjoy Quote Link to comment Share on other sites More sharing options...
MJDENN Posted October 9, 2017 Share Posted October 9, 2017 I have the same problem 17.5 motor Changed the sensor leads twice Tried another motor Lashed out and just bought another Justock but just the same. moved the end points up and down to no avail plugged it into program box and it's running V1-509-no-timing only other version is for a crawler Any help would appreciated please Quote Link to comment Share on other sites More sharing options...
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