Castle Mamba XL2 ESC cogging

[othello]

I will add an external BEC for sure. The 5A BEC seems a bit weak for my taste either. The 12V 80x80 fan is powered off one of the 4s batteries. Gear mesh is set relatively loose compared to my 1/8th cars ... smooth running with no binding. Start Power low was the default setting ... i thought this will be easier for the batteries so i kept this setting. I don't think that there is a neutral shift, as i'm using the same radio with different cars and never have experienced troubles when starting from 0 rpm either back or forward. Thanks for your inputs and ideas.

There is one member on our austrian forum who has reported that on his race track 9 out of 9 XL2 ESC are showing the same behaviour. When changing the ESC to an MGM or Atos the behaviour is gone. So must be the ESC. While racing the issue is sort of non existent since they won't brake their car to 0 rpm.

On the other hand we have one member with a Baja 5e who is not experiencing this phenomenon with his blur rtr setup and another one who is using 2 XL2, one in his losi five and one in his Crick Corr Truck and he is reporting having the same issues as i do.

I haven't searched other forums but this can't be a problem which happens only with my setup.

[othello]

Video of today illustrating the constant degradation of the cars start up from 0 rpm (130mb).

Runtime almost 10 minutes. 6200mAh used out of 7000mAh usable.The car is geared for 44 mph (70km/h).

I pulled over a few times during the run to check the startup behaviour. I think it is noticeable that over time start up becomes harder and harder and cogging gets worse and worser. Especialy at the end of the video one can see that cogging is at a point you don't want to have it.

[Pdelcast]

Originally Posted by othello

Video of today illustrating the constant degradation of the cars start up from 0 rpm (130mb).

Runtime almost 10 minutes. 6200mAh used out of 7000mAh usable.The car is geared for 44 mph (70km/h).

I pulled over a few times during the run to check the startup behaviour. I think it is noticeable that over time start up becomes harder and harder and cogging gets worse and worser. Especialy at the end of the video one can see that cogging is at a point you don't want to have it.

Hi Othello,

I have asked my engineers to take a look at this problem and see if they can reproduce the issue.

Please give us a couple weeks to see if this is something that may be fixed by a software patch.

Thanx!

Patrick

[othello]

Thanx Patrick. Other than the described issue the XL2 ESC is performing as i have hoped for. I will check for firmware updates now and then.