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Old 05-30-2008, 03:12 PM   #1
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Default question on lipo pack for a receiver

Hi,
I have a spektrum dx3 with a nimh pack. I'm thinking of switching over to lipo. I found a 1300mah pack that fits my car. Now my question is on the regulator.

It has to be 6 volts but how many amps? I found a 6v 2 amp regulator by the same company. Is this ok for one high torque servo up front and a regular servo at throttle?

thanks
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Old 05-30-2008, 03:19 PM   #2
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It would probably be OK. I use the 10 amp Castle BECs.
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Old 05-30-2008, 06:00 PM   #3
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10 amps for a receiver and that is ok? You cannot fry anything can you if you use more amperage but keep it at 6volts?

Sorry for all the questions but i really know nothing about rc electronics.

Thanks
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Old 05-30-2008, 06:50 PM   #4
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Originally Posted by charlesd View Post
Hi,
I have a spektrum dx3 with a nimh pack. I'm thinking of switching over to lipo. I found a 1300mah pack that fits my car. Now my question is on the regulator.

It has to be 6 volts but how many amps? I found a 6v 2 amp regulator by the same company. Is this ok for one high torque servo up front and a regular servo at throttle?

thanks

you could email the company that sells the regulator and ask if it is rated for RX packs..
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Old 05-31-2008, 01:20 PM   #5
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I'm not trying to hijack the thread, but ESWLFSE, what voltage did you set your regulator for? I just picked up a Castle Link but I'm not sure if I want to go higher then 6 volts.
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Old 05-31-2008, 02:59 PM   #6
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Losi makes a 6volt regulator that I believe is rated at 5amps. I've used it for the last few months and it works flawlessly. Novak also makes one that would work. It's amazing how more consistant the servos are from the beginning of the race until the end.
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Old 05-31-2008, 07:05 PM   #7
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I picked up a novak 5460 today. When i get the battery and charger next week i'll test it out.
This model has 3 amps at 6v. I'm guessing for an on road car, 3 amps should be more than enough.
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Old 06-01-2008, 12:03 AM   #8
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Quote:
Originally Posted by charlesd View Post
I picked up a novak 5460 today. When i get the battery and charger next week i'll test it out.
This model has 3 amps at 6v. I'm guessing for an on road car, 3 amps should be more than enough.
I run that novak regulator on my RRR and my IGT car. I have a losi regulator in my Truggy.
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Old 06-01-2008, 08:00 PM   #9
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Quote:
Originally Posted by charlesd View Post
10 amps for a receiver and that is ok? You cannot fry anything can you if you use more amperage but keep it at 6volts?

Sorry for all the questions but i really know nothing about rc electronics.

Thanks
10A means it provides up to 10, the rx and servos only draw what they draw. the only reason they would pull more is if something were jammed in the servo, making the motor work ecesively hard.

mcsquish- i would probably set it a few tenths higher(6.2 or .3), since when a nimh pack puts out more than 6 when fully charged. or maybe higher if your trying to get performace out of junky servos
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Old 06-03-2008, 03:15 PM   #10
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Geeunit, what are you doing on this nitro on-road thread?
Charlesd--what he said is exactly right. bec unit must be able to supply the current (amps) that the rx and servos demand. The bec and rx battery pack does not 'force feed' the rx and servos, merely supplies what is needed. One could have a bec rated too low, but not too high. If the bec had too low of a rating, it could over heat or burn out.
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Old 06-04-2008, 08:57 PM   #11
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Geeunit, what are you doing on this nitro on-road thread?
Charlesd--what he said is exactly right. bec unit must be able to supply the current (amps) that the rx and servos demand. The bec and rx battery pack does not 'force feed' the rx and servos, merely supplies what is needed. One could have a bec rated too low, but not too high. If the bec had too low of a rating, it could over heat or burn out.
ive been known to to run nitro occasionally also, too add to what dune said, if your running spektrum and the bec is too low, it could cause a failsafe. i remember this happening when it first came out, and i had a hi power servo and a sport esc that had a weak bec.
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Old 06-07-2008, 12:53 PM   #12
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Quote:
Originally Posted by charlesd View Post
I picked up a novak 5460 today. When i get the battery and charger next week i'll test it out.
This model has 3 amps at 6v. I'm guessing for an on road car, 3 amps should be more than enough.

3 amp should be perfect for 1/10 but not for 1/8 or offroad.
Just for some security though there are a lot of 5 amp ones available.
I use VXR and Nosram 5 amp ones with no hassles in the 5 vehicles running them.
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