I need help with big boat

[JRPLANE]

This is my first big electric boat, It is a 54" bonzi deep vee. I am running a leopard 5692/730kv, X457, 12S5000's, CC HV 240 esc. How do I tell how many amps the boat is pulling?
I just fried the CC HV 240. I dont want to fry another. I started with 8S made a lap, checked the temp on everything. motor barely warm,
esc stone cold.

Next 10S the same, 12S motor and batteries maybe 110 degrees, esc stone cold. I run the boat 4 sets of batteries @ 12S always cold esc. The 5th run
the boat ran about 20' and fire and smoke poured out of the hatch. ESC is smoked and maybe a set of batteries. The batts got so hot one wire came
loose.

How do I tell the amp load? Does the setup seem close. Did the ESC just crap out? I am not looking for all out speed, I want something fun to run.

The boat ran 49 mph on the previous run, I didn't think that was bad for a sport boat that weighs 20 lbs. RTR.

[Fluid]

That is 'way too much prop for 12S in that big heavy hull. I assume it is set up with a surface drive. The speed is just too low for that motor/pack/prop, the boat must be running quite wet - this increases amp draw a lot. I know you are frustrated and I will try to offer some help.

What you describe makes little sense to me. What the heck does "stone cold" or "maybe 110 degrees" mean - did you actually measure it? Running for one lap tells you little about the safety of a setup, you need to check temps after one minute intervals until you know the setup is safe for the entire expected run time. How long were each of your four runs on 12S? Did you use a lot of part-throttle running? Part throttle on an aggressive setup will fry the ESC in short order.

Unless you use a datalogging ESC or a separate logger you have to estimate amp draw - but your experience indicates you were pulling a lot of amps. If you time your runs with a stopwatch and then record how much charge you put back in the packs you can estimate the average amp draw for that run us9ing this: http://www.offshoreelectrics.com/conversion.htm

That motor is better suited for 8S in that large hull, allowing you to run a large enough prop to push it efficiently. I can't understand how you managed four runs on 12S before it blew! A better 12S motor would be one with a Kv around 500. A Castle ICE 200HV has datalogging and will handle 12S, the Castle ICE 240 will handle up to 8S. Both have a better rep than the obsolete Hydra 240HV controller.



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[JRPLANE]

I don't have any way to measure the heat right now. But what I mean about stone cold is just that, The ESC was the same temp as the lake water. The motor was about 110 degrees, you can hold it as long as you want.

I would run the boat approximately 1200' wide open, back off turn 180 degrees and do it again. My buddy has the exact same hull , motor, esc, batteries, and he has 5 runs on his. I will tell him to stop.

We are only getting 4 minutes max, before reaching 3.6v under load on 12S5000's.

I would appreciate any advise I can get. There is no one in my area that runs fast boats, only a couple of guys with spartan's and they know nothing about their boats.

What prop/ battery combo would you recommend? I can run 6S, 8S if needed.

Thank you Jeff