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-   -   Two digital servos and a CC BEC have gone into thin air..... (https://www.rc-monster.com/forum/showthread.php?t=13133)

captain harlock 06.27.2008 08:09 PM

Two digital servos and a CC BEC have gone into thin air.....
 
Yep, indeed.

After I've installed and combined a CC BEC, a Futaba Digital S9951 servo, a FASST receiver, a Tekin R1PRO, a NEU 1512/1.5D and a 1000MFD 35V capacitor together, the servo( and another one I've tried as an experiment) and the CC BEC were fried up abruptly.

I don't really know what've caused this. Although I've ordered the things again, I'm afraid the same issue might occur.

I've got to identify the problem and solve it befor it happens another time.

Please, guys, help me.....

Thanks,

Alawi El-Jifri :)

pb4ugo 06.27.2008 08:38 PM

You did disable the R1Pro BEC, right?

captain harlock 06.27.2008 08:44 PM

Yeah, I did.

captain harlock 06.27.2008 10:17 PM

Guys, for real I did not open this thread to have a ten page chit chat( though I'd like to).

All I'm asking for is some help from the pros( Where in God's name are they??!!!).

azjc 06.28.2008 03:09 AM

Quote:

Originally Posted by captain harlock (Post 186151)
Yep, indeed.

After I've installed and combined a CC BEC, a Futaba Digital S9951 servo, a FASST receiver, a Tekin R1PRO, a NEU 1512/1.5D and a 1000MFD 35V capacitor together, the servo( and another one I've tried as an experiment) and the CC BEC were fried up abruptly.

I don't really know what've caused this. Although I've ordered the things again, I'm afraid the same issue will occur.

I've got to identify the problem and solve it befor it happens another time.

Please, guys, help me.....

Thanks,

Alawi El-Jifri :)

AL

its hard to tell without a wiring diagrahm but I am guessing it is related to the BEC and the cap either or both were wired incorrectly...can you post a diagrahm ? when you programmed the BEC was it working ok?

lutach 06.28.2008 09:39 AM

I've read in another forum, that some of the digital servos can pull more then 5A at stall. The guy that mentioned went to say 10A, but I don't think the normal sized servos are there yet (I might be wrong as we have servos that can put out over 500oz/in http://www.servocity.com/html/hsr-59...ra_torque.html). In electronics though as I've learned from our great members here, the actual peak might be even more. You could also have a unit that was faulty. This things can and will happen to anybody. I've read report of BEC units failing.

BrianG 06.28.2008 02:50 PM

I've also heard that when the CC BEC fails, it sends full battery voltage to the load instead of simply not working like most others do.,

azjc 06.28.2008 03:16 PM

thats not good.....maybe I will invest in a koolflight ......

captain harlock 06.28.2008 05:51 PM

Oh no.....

I've just ordered another CC BEC ( the one in the CRT.5 is working perfectly) and a low profile digital servo.

I think I'll need to use higher grade capacitor. Maybe a 2200mdf 25v ones.

Did anyone use such a capacitor with their R1Pro?

BTW, how can I program the BEC?

Desmo 06.28.2008 05:59 PM

do you have a volt meter? check the bec output

lutach 06.28.2008 07:04 PM

That's why I still use Rx packs. It's been rock solid.

captain harlock 06.28.2008 07:46 PM

Yeah. I've never had any problems with rx packs.

captain harlock 06.28.2008 07:48 PM

Quote:

Originally Posted by Desmo (Post 186350)
do you have a volt meter? check the bec output

The bec is no longer alive.

I smelled it.....mmmmm...full of bar bq.

azjc 06.28.2008 08:54 PM

Quote:

Originally Posted by captain harlock (Post 186349)
Oh no.....

I've just ordered another CC BEC ( the one in the CRT.5 is working perfectly) and a low profile digital servo.

I think I'll need to use higher grade capacitor. Maybe a 2200mdf 25v ones.

Did anyone use such a capacitor with their R1Pro?

BTW, how can I program the BEC?

you would use Castlelink and after you connect the castlelink to a USB port pull up the CC program and it should see the BEC and pull up that portion of the program

BrianG 06.28.2008 09:15 PM

I use a CC BEC in my buggy with no issues so far, but plan to make a circuit to cut off power to it if the output goes too high. The KoolFlight or DimensionEngineering or Hercules BECs are great alternatives IMO; low/no noise, strong output, and good efficiency. Receiver packs obviously work well, but it's just one more thing to charge.


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