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Power Systems Talk about motors, ESC speed controllers, gear drives, propellers, power system simulators and all power system related topics

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Old 05-27-2006, 08:50 PM   #1
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Default Connecting a UBEC?

I just got my esc and UBEC for the .60 ultra stick, but I'm not sure how they connect together. The UBEC has a plug for the receiver, a jst plug, and small exposed wire for something. I can't figure out how this goes together.
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Old 05-27-2006, 09:01 PM   #2
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http://www.hobby-lobby.com/ubec.htm

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Old 05-27-2006, 09:50 PM   #3
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Thanks.
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Old 05-27-2006, 09:56 PM   #4
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Originally Posted by k-vette View Post
I just got my esc and UBEC for the .60 ultra stick, but I'm not sure how they connect together. The UBEC has a plug for the receiver, a jst plug, and small exposed wire for something. I can't figure out how this goes together.
I'm not sure why you have a JST plug unless you bought this used from someone and they added it for a quick disconnect from the ESC. The RX plug coming off of one end goes to the Batt plug on the RX. On the other end is a POS+ and NEG- wire that can just be soldered on with your ESC Batt. plug. You should have no other wires. If your ESC has a built in BEC it will have to be disabled by cutting the red wire on the ESC that would normally plug into your throttle channel on your RX. I don't normally cut the red wire. What I do is use a short servo extension between the UBEC and the RX and cut the red wire on that without modifying the ESC in any way.

You do have the UBEC that Mike posted the link to, correct?
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Old 05-28-2006, 05:49 AM   #5
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One thing I should point out here. You do not necessarily have to 'cut' the red wire from the ESC to RX plug. You can simply remove it from the connector (very easy to do) and install a small piece of heat shrink (or tape) over it so it can be replaced later if desired. No cutting or permanent modification to the ESC this way. Rugar's idea of putting a small extension in between the RX and ESC is a good tip too!

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Old 05-28-2006, 04:23 PM   #6
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Is this specific to the UBEC? My ParkBEC specifically told me not to cut the red wire to the CC45

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Old 05-28-2006, 06:03 PM   #7
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Yeah, the ParkBEC is unique in that your ESC plugs INTO your ParkBEC, rather than your separate BEC plugging into a receiver channel. I like this arrangement of "not having to mutilate any wires", that's why I have several. They work just fine for all my planes and my sailplane.

The "Ultimate BEC" (UBEC) requires a dedicated Rx port or battery pins.

Unfortunately, since the Ultimate BEC was the first and, probably, the most popular, everybody refers to separate BECs as "UBEC", and ESC built-in BECs as "BECs". Kind of like referring to a facial tissue as a "Kleenex", regardless of brand. It's led to some confusion, as there's really only one "UBEC" brand; others are called by different names.

These days, I try to refer to this type of device as a "Separate BEC".
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