Hydra 240 lv shorted

[Gary]

Anyone ever have a hydra short out and cook the batteries? This is the second time this happened in a 1 year time. ESC shorts out and batts catch fire. Most of the time they just die and not run but mine take the batts with it. 1521 1.5, two 11.1 volt batts. m645 prop, 6.5 bullets with shortest wires possible to motor and batteries,boat is a 30 inch hydro at 7.5 lbs. Boat runs consistent 87-89 mph and will have 40-50 passes before this happens. Any thoughts before i call castle.

[Fluid]

First off you are abusing your equipment - that may be intentional. The 1521/1.5D is a 4S race motor, running it on 6S with that prop is probably drawing over 200 amps average. Too, the 240LV is known not to live long at high amp draws on 6S; at 4S that is not a problem. Personally I am shocked that you can get 50 passes with that setup - SAW racing is tough on ESCs and I am lucky to get that many with the 240LV running 4S....

Are you certain that the ESC caused the problem? If the batteries shorted internally due to excessive amp draw the result would be the same.

Did the motor ever get over 185F on the case? I once demaged a 1521 by getting it to 195F. I sent it back to Neu and they said I'd lost about 25% of magnet power, so I replaced the rotor. When the motor loses the magnets its efficiency goes way down and it acts like a motor with fewer turns. The resulting high amp draws is death on ESCs and cells.

The most likely cause was the ESC, but not the only possible one. You are discovering that pushing the speed envelope costs money....



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[Gary]

My motor temps never go over 100-110. Even the esc runs low temps. My first esc lasted 1 year with this combo.Im pretty sure the esc is at fault because bith times both batteries cooked, thats kind of odd for both at the same time. Now i have puffed many batteries but these are melting when it happens. I also know i am abusing my setup but i do not have the knowledge to run fast without doing it this way.Ive run all my boats spinning the prop real hard and pushing the limits but i have also seen ALOT of guys cook stuff just plugging in there batteries for no reason, or having 4 s on the 240 and it just craps out. I think its just luck sometimes. My buddy cooked 2 240 HVs on my setup and that should have never happend.But again my first ESC lasted a year and i puffed at least 6 batteries with it. Oh Well

[Mel279]

Mine also the same problem, it smoke my twin 6s lipo packs and it doesn't fried the esc but the esc seem to be not working after that.

My boat is a drifter s using feigao 12xl, 6s lipo and prather 220 prop.

[DISAR]

This could be well over a 600$ damage depending on the lipos, OOW! Are you running in sea or pond? One thing is for sure, nitro or gas is cheaper.

[Gary]

Pond. Oh yea.....600.00 times two for the second time.And i thought chaging glow plugs got expensive when i was Nitro. LOL here is a short {shaky }videohttp://www.youtube.com/results?search_query=my+boat+hedach&search_type=

[785boats]

What capacity & C rating batteries are the ones that puff or blow?
What voltage & capacity do you discharge them down to under those loads?
It could be that your batteries are too small and/or you over discharge them.
Cheers.
Paul.

[Gary]

Yes i just got off the phone with Thomas at Castle and he said it was not the controller that caused this but the batteries being over drown. They where 40-80 c batts but only 3500 mah because of the sise issue i had with the boat so time to make some room! This all makes sense because i put a prop with more pitch on it and the boat i think was headed for a 90+ run when it happend but was not spining the motor as hard so i guess there was a much bigger load. She will be back togather for the weekend for faster speeds!!!!