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Sep 28, 2012, 08:17 AM
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United States, MI, Middleville
Joined Mar 2012
84 Posts
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rc timer 80a esc opto
i just recieved my 80a esc (no bec, i think) problem is the esc wires going to the reciever have three wires red, black and white, does this mean the opto does have a bec and do i still need to isolate the red wire if there is no bec, i have a 7amp ubec to go along with it. any help would be apprecieated.
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Sep 28, 2012, 08:31 AM
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Edina, MN, USA
Joined Oct 1999
11,054 Posts
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If it is Opto that means no BEC and the ESC needs power from the RX via all 3 wires.
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Sep 28, 2012, 11:13 AM
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United States, MI, Middleville
Joined Mar 2012
84 Posts
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it works with the red wire disconected in tandem with the ubec
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Sep 28, 2012, 11:17 AM
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Edina, MN, USA
Joined Oct 1999
11,054 Posts
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Doesn't matter how it gets the power (RX bat, UBEC), an ESC w/Opto needs the red wire connected.
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Sep 28, 2012, 11:24 AM
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United States, MI, Middleville
Joined Mar 2012
84 Posts
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thanks appreciate the help
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Sep 28, 2012, 12:02 PM
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Edina, MN, USA
Joined Oct 1999
11,054 Posts
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You can easily find out if this is the case; don't connect the ESC's red wire -- if it works fine; but, most likely it will not.
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Sep 29, 2012, 01:49 PM
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San Jose, California
Joined Dec 2007
4,966 Posts
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I find that lots of those so called opto ESC aren't really opto at all. If it works without the red wire, I'd leave it off. You'd end up hurting yourself more if it's a not opto and you leave the red wire on.
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Sep 29, 2012, 06:29 PM
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United States, MI, Middleville
Joined Mar 2012
84 Posts
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well, i did connect the esc to the reciever and no power so either way with the red wire or without . seems either way i have to use the ubec, which i was planning on anyway.
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