JimboJames1972
22-05-2011, 04:31 PM
Hi all,
To comply with the latest Mardave Circuit 'rules' I have recently fitted a Fusion Exceed speedo and motor combo (40A Sport (?) speedo and 13.5 motor) into my V12 car. I am running it on 1s LiPo with an RCDynamics voltage booster. I have wired the booster and speedo into the reciever in the same way I did my HobbyWing Extreme - remove speedo red wire from its plug and replace it with the positive wire from the booster. The rest of my gear is a Futaba 3VSC handset with Spektrum module, Spektrum recievers and Savox 1350 servo.
On the bench it all worked fine - forwards, backwards, left and right and I was able to modify some of the settings via the program box.
On the track it was ok too, for the first two or three mins of each race that it. At about 3 mins into each run I got problems with speed and throttle. Sometimes the motor would seem to bog down at full throttle - the car would go at about 80% speed down most of the straight, lurch a bit and then go off like a scalded cat. Sometimes it would cut out completely (but only for a split second) and then resume play. Both these were under acceleration, there was no problems with brakes, reverse or steering at any time.
Back in the pits I got an error message via the program box - "Error R" which I believe means a problem with signal. I tried a different reciever and still got the same. I tried re-binding both recievers with my handset and then re-synching the speedo to get neutral, full throttle and brakes. All these went through fine on the bench but there was no joy on the track. I also moved my PT and even the reciever ariel to be as far away from eachother and all other electrics as possible, not still got the same.
I'm thinking it might be the voltage booster, but the fact that I never got issues with the steering or any other 'interference' type symptoms is confusing.
Motor came off each run at about 38-42'C so no problems with gearing or overheating.
Is there something obvious I have overlooked? Any suggestions?
James
To comply with the latest Mardave Circuit 'rules' I have recently fitted a Fusion Exceed speedo and motor combo (40A Sport (?) speedo and 13.5 motor) into my V12 car. I am running it on 1s LiPo with an RCDynamics voltage booster. I have wired the booster and speedo into the reciever in the same way I did my HobbyWing Extreme - remove speedo red wire from its plug and replace it with the positive wire from the booster. The rest of my gear is a Futaba 3VSC handset with Spektrum module, Spektrum recievers and Savox 1350 servo.
On the bench it all worked fine - forwards, backwards, left and right and I was able to modify some of the settings via the program box.
On the track it was ok too, for the first two or three mins of each race that it. At about 3 mins into each run I got problems with speed and throttle. Sometimes the motor would seem to bog down at full throttle - the car would go at about 80% speed down most of the straight, lurch a bit and then go off like a scalded cat. Sometimes it would cut out completely (but only for a split second) and then resume play. Both these were under acceleration, there was no problems with brakes, reverse or steering at any time.
Back in the pits I got an error message via the program box - "Error R" which I believe means a problem with signal. I tried a different reciever and still got the same. I tried re-binding both recievers with my handset and then re-synching the speedo to get neutral, full throttle and brakes. All these went through fine on the bench but there was no joy on the track. I also moved my PT and even the reciever ariel to be as far away from eachother and all other electrics as possible, not still got the same.
I'm thinking it might be the voltage booster, but the fact that I never got issues with the steering or any other 'interference' type symptoms is confusing.
Motor came off each run at about 38-42'C so no problems with gearing or overheating.
Is there something obvious I have overlooked? Any suggestions?
James