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Byte
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07.14.2009, 08:42 AM

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Originally Posted by florianz View Post
thanks for the "no-sparks" hint. that german guy doesn't get any money for his tests, so I would trust that results. at least it shows more/less how capable different plugs are.

at hk they have some nice 8mm plugs. I don't know if that's too much. they're not quite convenient...

very interesting topic. when people invest 100's $ in excellent electronics, it's also important to think about plugs, wires etc, and if there are any weak spots.
I ordered some 5.5mm plugs from Hobbycity. But they weren't that cheap; 12 dollar for 10 pair.

But MGM says that because of low-current connectors ESC's can go into fire. Well, when I started this hobby I had a 10 turns brushed + LRP brushed ESC. I used Tamiya connectors, and they melted three times, but to the motor or ESC nothing happened? Can anybody explain this? Or was it just lucky me?
   
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florianz
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07.14.2009, 09:09 AM

I melted my plugs as well... but the esc survived. it was a lrp irc/ics controller, I think one of the best and most solid bushed esc's EVER. great stuff. any other might have burned. but I think it killed the motor. I think it burns there where the weakest point is.
   
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MetalMan
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07.15.2009, 02:10 AM

Quote:
Originally Posted by Byte View Post
But MGM says that because of low-current connectors ESC's can go into fire. Well, when I started this hobby I had a 10 turns brushed + LRP brushed ESC. I used Tamiya connectors, and they melted three times, but to the motor or ESC nothing happened? Can anybody explain this? Or was it just lucky me?
Comparing brushed and brushless is like comparing apples and oranges (sort of...). Brushless ESCs do all the commutation, brushed motors do the commutation. Brushed ESCs do a lot less work than brushless ones, which is why brushless ESCs in brushed mode can handle so much current.

There's a lot more to go wrong with a brushless ESC, especially a sensorless one. If a rotor locked up on a brushed motor it might just fry the commutator or brushes, but in brushless there is no weak link like that.


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