| The end may be in sight....
Following extensive testing in my bath this morning, I have isolated the cause of this problem!!!
This 'stuttering' only occurs when full power is applied forwards, reverse does not suffer at all. Also, both motors stutter at exactly the same time. 'Ah, receiver problem,' I hear you cry. But no, it happens with a genuine Futaba receiver as well as the 'cheap' one.
The problem lies in the speed controllers... believe it or not!!!
I have borrowed an older Sonic 15 from another boat and tried it alongside one of the Vipers. The Viper stutters, the Sonic runs perfectly.
I have just finished speaking to Mtronics who are as mystified as I am but, being the helpful people that they are, have asked me to send the Vipers back with a note about the problem. Now I can only hope that they will be able to duplicate the fault.
Added to that, I have a Viper 25 which exhibits similar problems. Unfotunately I can't put the boat in the bath and don't have a spare 25 amp controller to test it against.
Andrew, are you using the same ESCs i.e. Mtronic Viper? If so this may be the same problem.
I'll post any reply I get from Mtronics in this thread.
Scottie |