Castle BEC Question....

[k_bojar]

ok guys, i'm new to this whole 'need a BEC for crawlers' thing and I need some advice..

i have a high voltage servo (airtronics ers-962) and I want to run it at its max performance (7.4v).. I have the castle BEC and I know I need it programed to put out 7.4v - but (and here's where I get lost), do I need to be running a 3s lipo as the main battery? I'm currently running a 2s reedy 5000mah pack and would like to continue using that.. my speedo only put out 5v to the BEC, so I'd like some more

so will the castle BEC put out enough voltage for the servo with only 7.4 as its main power source?

secondly, will a spektrum micro dsm receiver handle the 7.4 coming from the BEC without going *poof*? I know I need to remove one of the wires from the speedo to the receiver going with the BEC, but wasn't sure about the voltage..

thanks!!

kaybo

[DRTMI]

Use the BEC in the ESC to power the receiver and use this for the servo: Holmes Hobbies LLC

[k_bojar]

Originally Posted by DRTMI

Use the BEC in the ESC to power the receiver and use this for the servo: Holmes Hobbies LLC

me likey

i thought you were sending me to another servo

[EeePee]

The BEC will put out 7.4 from your Reedy battery until the battery can no longer put out 7.4 volts. When the battery voltage sags lower than 7.4, that's all the BEC will put out also.

[k_bojar]

Originally Posted by EeePee

The BEC will put out 7.4 from your Reedy battery until the battery can no longer put out 7.4 volts. When the battery voltage sags lower than 7.4, that's all the BEC will put out also.

i understood that part - just wasn't sure if I needed the higher voltage main pack from the beginning.. I guess that at some point, I probably should upgrade to the 3s main pack (i'm sure my winch will like that)

but i like that bypass thingie - ordering now! then just need to find someone to lend me the castlelink

based on the bypass this, the BEC plugs into the side where the red/black leads are? and the servo goes into the one with the red/black/yellow?

[EeePee]

BEC is just a fancy word or whatever for a voltage regulator. In your case you could not even use one and wire the battery straight to the servo.

Well except a full charge battery is higher than 7.4 but the point remains.

[k_bojar]

Originally Posted by EeePee

BEC is just a fancy word or whatever for a voltage regulator. In your case you could not even use one and wire the battery straight to the servo.

thought of that too - not sure i fully trust that idea, though

[EeePee]

Yeah sorry just edited as I thought about that for an extra second.

Though anything claiming safe at 7.4 should be totally fine with an extra volt.

[k_bojar]

Originally Posted by EeePee

Yeah sorry just edited as I thought about that for an extra second.

Though anything claiming safe at 7.4 should be totally fine with an extra volt.

i meant more on me, then the servo.. wasn't even thinking that a fully charge 2s pack is around 8.4v