Originally Posted by
dameetz
I m posting this on behalf of a friend of mine coz nothing that we do seems to solve the problem.
My friend has been using Hobbywing Xtreme Stock combo with Hobbywing 11.5T motor for the past 2 weeks which include 1 race day. For the past 4 days he's having problem with the esc somehow loosing the turbo function, its more like its switching to sensorless mode by it self. First 2-3 laps it was fine, after that the car was just crawling, then all of the sudden the Turbo is there again. This happened on and off during 5 mins drive. The ESC and Motor's temp was normal (esc 40C ish and motor 60C ish).
What have we done so far to solve the problem:
1. Change the sensor wire (a few time already which include a new one)
2. Calibrate the throttle (set to 100% during calibrating then bump it up to full 140% EPA)
3. Reflash the 518 stock firmware (twice now)
BUT the problem is still there
Anyone got any more idea on what to do?
To me it seems to be a problem with your battery .Have you tried a different battery .
As for the esc going to sensoreless mode and that causing it to slow down doesnt seem right as there is no such thing i have heard it many times from people on this site but believe doesnt make sence .
The sensor wire basically is there to make sure the esc knows where the rotor is at any given time to produce 100% power to a single phase may it be A,B or C thats all .were the sensorless unit works by producing 100% to two phases as it has no hall sensors to know ehere the rotor position is thats all .
When a sensor wire is out it will not slow the car down but make it cog when is starts up thats all that could also be caused by phase A shorted mosfets nothing else .
The Capacitor network is used to equalise the battery voltage to the esc and not allow the battery to increase also there board protects from voltage spikes and radio interference .
So i suggest you have a careful look at your battery .
let me know how you go
regards ANgelo