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Old 06-19-2007, 11:47 PM   #1
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Default How to fix a weak BEC?

Hello i have a LRP QC2 and a Ko propo PDS-2413ICS servo. The problem is if i turn the steering too fast, it will suck too much power, and will shutdown my receiver (spektrum) and go back to neutral . I don't have a spare 4cell pack to test if it really is the BEC, but i've tested in with a LRP V7.1 and it works perfectly fine.

So is there any easy fix for this? and no i don't want to use a receiver pack as i bought to servo to save space and weight not gain...any help will be appreciated thanks
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Old 06-19-2007, 11:56 PM   #2
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I would try the spektrum cap. Its 6 bux, weighs next to nothing, and is pretty small. The only other suggestion would be to run a different servo ro esc.
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Old 06-20-2007, 12:00 AM   #3
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ok i'll give that a try
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Old 06-20-2007, 12:08 AM   #4
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I recommend one of these:
http://www.dimensionengineering.com/ParkBEC.htm
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Old 06-20-2007, 12:11 AM   #5
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I have had exactly the same problem with the QC2 and a JR servo. I have mounted a 10v 6800uf cap and also have made a voltage regulator that powers the servo directly from the battery 7.2v. Here is a pic More details on the bottom of this link.
http://www.rctech.net/forum/showthre...&page=41&pp=30
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Old 06-20-2007, 12:19 AM   #6
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The regulator is an LM7806 about $2. The input is connected to the positive of the battery 7.2 v . The centre is connected to your battery negative and negative input of the servo and the output of the regulator is connected to the input of your servo 6v. The battery voltage is reduced down to 6v and is connected directly to your servo. You may need to connect two or three in parallel to give you more amps 1 reg = 1 amp. 3 in parallel = 3 amps.
It is very simple to make and weighs next to nothing
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Old 06-20-2007, 03:03 AM   #7
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you can also buy the Novak nitro servo regulator or anything similar:

http://www2.towerhobbies.com/cgi-bin...?&I=LXJJF6&P=7

if you don't want to solder stuff yourself....
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Old 06-20-2007, 03:25 AM   #8
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Just picked up a cap and now it works flawlessly thankyou all
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