Given that last Friday was National Elephant Appreciation Day [it really was - google it] I'll risk jumping in to venture an "educated guess" because of the elephant in the room:
The OP states : "it keeps cutting out.When it cuts back in the boat runs at reduced speed until the esc is switched off and on again." This is the textbook definition of LVC protect mode. BUT HERE"S THE MEDIATING FACTOR :
First, look at a representative voltage graph :
batt graph sample.jpg
Now, the EE's that design the LVC need to compute and program in the firmware the EXACT moment that protection is needed. But Whoaa ! The voltage bounces up and down in the typical scenario - so do they (the EE's) select an absolute value in a time window of their choice ? A very narrow window indeed based on the typical LVC operating history. If a useable LVC would be engineered to monitor an average voltage drop over a small but battery surviveable window (one to two or more seconds) it might make living with it more "user friendly".
No doubt an over protective LVC is very likely a design factor imposed by the lawyers given the early reputation of Lipos and their almost universally accepted likely propensity for mass extinction of all living things. Imagine someone buying an ESC thinking that the LVC is the ultimate prevention device and (as often happens with beginners)and the boat is run way longer than is recommended and BOOM the boat / dock / house burns up.
As a racer, all of my setups have been devised to let me know that I have enough sparky fuel on board to keep the voltage in the "power range" for a mill + six + two penalty laps (I like to use turn buoys for traction).
I agree with Mr. Davis that one or two zoom-zoom runs doesn't mean that it is readily replicatable : " Someone ran it in A boat. Ran up and down their local puddle a dozen times last summer and that's that. The proof of concept. Must be a good setup. Really? "
I file these reports in the Journal of Small Samples (University Press) right next to the research study concluding : All Cars Are Red.
Craig - Am I on to something ?
2008 NAMBA P-Mono & P-Offshore Nat'l 2-Lap Record Holder; '15 P-Cat, P-Ltd Cat 2-Lap
2009/2010 NAMBA P-Sport Hydro Nat'l 2-Lap Record Holder, '13 SCSTA P-Ltd Cat High Points
'11 NAMBA [P-Ltd] : Mono, Offshore, OPC, Sport Hydro; '06 LSO, '12,'13,'14 P Ltd Cat /Mono
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