help with explanation please

[wuzofoz]

can any one shed any light on what happened. here's the story.
i purchased a new wheel radio and have been going through my boats fitting a new receiver and doing some programing getting ready for the weekend. fitting to the 1st 2 boats went fine.
on the 3rd boat that has a aquacraft 45amp ESC and 3630 1500kv motor installed i powerd up to bind the receiver. the receiver failed to bind so i went through the process again and this time it bound.
the steering servo moved and i realized the motor had not beeped when i heard a crackling noise. this noise was the motor wires melting.

i'm lost how a receiver could do this but the motor and esc had been operating fine. could anyone help explain what went wrong.

i have all ready put the receiver in the bin just in case

[Meniscus]

A question: Are you using a separate battery to power the receiver in this setup or are you using the Aquacraft BEC?

Whenever I am binding new receivers, regardless of manufacturer, I setup separately outside of the boat using a separate battery specifically for RX use. Examples include the traditional 4-AA holder or a LiFe pack. To ensure proper operation, I use an extra servo on the steering channel to verify operation and then plug the same servo into the throttle channel. Because of the amount of power with modern setups, it would make me nervous to setup live with all components connected. If nothing else, the last thing I would want is to go full throttle with no load because the throttle is reversed for example. Usually this isn't an issue as the ESC wouldn't arm, but strange things happen. If you test the throttle and then discover that the ESC arms while the throttle is depressed, then you would have a live ESC and driveline when you return to what you think is neutral. In that case, you will be fumbling around while holding the transmitter throttle down which is not the best situation.

Note: If you disconnect a battery from an ESC that is actively running a motor, it can very easily cause permanent damage the ESC. It can also create a situation where one of the caps can blow-up in your face. For that reason, whenever I am connecting any FE setup, I am always wearing safety glasses because I value my eye sight. It just so happens that usually it is sunny and I'm wearing safety sunglasses as designed for applications such as a motorcycle. It may be that I am overly-conscious or overly-cautious, but it only takes one incident. I'd hate to have to explain to someone that such a significant injury occurred while I was playing with a toy boat.

Incidentally, I also wear safety glasses of some sort when I'm jumping a car as well. Is it rare that something would happen? Yes. Does it happen? Absolutely it does!

[wuzofoz]

thx for your reply meniscus.

i was using the bec. i had the flex drive removed and was using 2s instead of 4s.

[DCMW]

Conflicting signals from the receiver being in bind mode?? Never heard of what happened but stranger stuff has:)

[wuzofoz]

Conflicting signals from the receiver being in bind mode?? Never heard of what happened but stranger stuff has:)

that's about the only thing myself or anyone else has been able to come up with besides this receiver is faulty some how. i'll see if it's easy to fish it out of the trash and hook it up to a battery and some old servos and try it. maybe smart to do that with all new receivers just in case.

thanks for the input guys.

[danielplace1962]

Were you using the BEC in the ESC to power the receiver through the throttle wire from the ESC into channel 2.

You didn't have a external pack connected to the receiver when you plugged the esc into channel 2 ?

There isn't any signal input that the receiver can produce that would cause the ESC to burn up. Except maybe if it shorted and the positive went to the signal.

[wuzofoz]

Were you using the BEC in the ESC to power the receiver through the throttle wire from the ESC into channel 2.

You didn't have a external pack connected to the receiver when you plugged the esc into channel 2 ?
There isn't any signal input that the receiver can produce that would cause the ESC to burn up. Except maybe if it shorted and the positive went to the signal.

Power to receiver was from BEC only pluged into Chanel 2 and steering servo into Chanel 1.

Not sure if ESC is fried as it still beeps when powerd up but it will no arm. Will find a motor to hook up to it and try incase the burnt motor is causing the arming problem.

The motor is defiantly fried looking at how bad the wires are burnt

[wuzofoz]

just an update.
hooked up the Aquacraft 45amp esc to another motor and the receiver it was running on when all was going good.
as soon as the battery was connected it started smoking.
went and found the new receiver in the trash and tested it with servos and then on another ESC and motor. went fine for both tests.
lastly thought stuff it IT'S only a $20ESc so hooked up the 1500kv motor and it ran. under load with some heat would most likely be a different story

looks like it may of been simply coincidence for the timing and the ESC just had enough. i'm not sure what really happened.
i'll put the suspect receiver into my Small bolt and see what happens.