Originally Posted by JamieV

I am struggling to make this speedo work with a graupner or corally motor.

I have an extreme stock and an SP speedo, both on 930 firmware and have tried both speedos with both motors and always get the same problem.

They always work great until they lose all the advanced timing. The green light on the speedo flashes which indicates the speedo has overheated ? however the speedo / motor are not even hot. I even disabled the overheat function on the speedo but it still had the same symptoms with the green light flashing and loss of advance timing. Admittedly if I tried it an hour later it would be fine again.

Typical settings :-
FDR 5:1
Boost 50
No turbo
DRS 2
RPM /ACC 400

This problem can be after 1 minute or 4 ? I bought a second motor but it still did the same.

I have run with turbo and without. it makes no difference - Has anybody had this problem / know a solution ?

Thanks in advance

Originally Posted by COBRARACING

boost is 50 how high is your mechanical timing of the motor end bell ?High end bell mechanical timing will causing excessive currents with a distorted signal back to the esc causing errors and the esc to jump into sensorless mode .Remembering most motors even if the end bell is at zero point are actually 28 degrees or higher then ever movement of the end bell adds 1.5 degree to 2.5 degree of timing depending on motor brand and design .remembering the esc does not control the end bell timing of a motor so excessive end bell timing will cause the error .

Another issue is excessive timing also needs a true c rated battery that can handle the punch when needed .

Originally Posted by COBRARACING

boost is 50 how high is your mechanical timing of the motor end bell ?High end bell mechanical timing will causing excessive currents with a distorted signal back to the esc causing errors and the esc to jump into sensorless mode .Remembering most motors even if the end bell is at zero point are actually 28 degrees or higher then ever movement of the end bell adds 1.5 degree to 2.5 degree of timing depending on motor brand and design .remembering the esc does not control the end bell timing of a motor so excessive end bell timing will cause the error .

Another issue is excessive timing also needs a true c rated battery that can handle the punch when needed .

Originally Posted by Jennings

We are getting the same problem using the team powers 17.5t motor, as soon as you go full throttle the car stutters, speed controller green light flashing and it seems to go sensorless, we have tryed 2 new sensor boards now, tryed numerous things last night, turned off the low voltage cut off, no timing on the motor, very little boost on esc and still does it every time.
Batterys are 6500 60c so should be ok.

Has anyone got any other ideas ?

Originally Posted by millbank

I'm a little concerned that Racers in exile is still not in operation as i have paid for 3 v3 speedo's and have no way of contacting them/stuart

Originally Posted by Jennings

We are getting the same problem using the team powers 17.5t motor, as soon as you go full throttle the car stutters, speed controller green light flashing and it seems to go sensorless, we have tryed 2 new sensor boards now, tryed numerous things last night, turned off the low voltage cut off, no timing on the motor, very little boost on esc and still does it every time.
Batterys are 6500 60c so should be ok.

Has anyone got any other ideas ?