Question about powering a TRX-4 steering servo upgrade.

[secondcircle]

Hello, completely new to this hobby but I already noticed how weak this steering servo is and I'm curious about upgrading.

I'm looking at the Savox SA1230SG.

I know that I won't be able to power this stock, the preferred option seems to be adding a Castle Creations CC Bec 10A 6S Switching Regulator.

I'm curious if another option would be to replace the ESC with the
Hobbywing QuicRun WP Crawler Brush Brushed 1080 80A ESC.

What I'm not sure about.

Does the receiver do any regulating of voltage/amps?

If I upgrade an ESC that has a built-in BEC that supplies more power to the receiver, enough that it could power that servo without needing an external bec, do I run the risk of hurting the other servos on the trx-4 that require less voltage?

I'm having a lot of trouble finding information on exactly how the voltage/amp interacts from the bec from the esc and the receiver.

When the receiver gets a signal to power a servo, what regulates how much power that servo is receiving, is it the receiver or is it still the bed on the esc.

I've been doing a lot of reading over the past two weeks because I find myself really enjoying this hobby and potentially upgrading and working on it sounds pretty enjoyable, I am just having trouble finding detailed information about how all the electronics interact.

Any advice on which route to go pro's con's etc would be useful.

 

[Smokin' Joe]

You could switch to the HW 1080, but I can't say 100% it will work well for your situation without an external BEC.

I don't think the other electronics should be a concern using the 1080 without an external BEC. The Savox SA1230SG is not a high voltage servo so you would only set the internal BEC output to 6v. I'm not that familiar with the TRX-4, but it seems unlikely that the other electronics would be hurt by this voltage.

The place you could run into a problem is if the 1080 couldn't supply the current this servo demands. I know some other people in the HW 1080 threads claim to be powering some pretty high powered servos with its internal BEC without issue, but I don't have personal experience doing so.

 

[Jim85IROC]

To specifically answer your question about the receiver, no, it doesn't regulate voltage at all. The receiver gets its voltage from the ESC and passes it directly to the power pins that you plug your servo & other stuff into. The TRX-4 uses the 6533 receiver, but I don't know what voltage level it can handle. Most newer receivers can handle up to around 8-9 volts, but it's best to verify before you cook the thing.

 

[Inspector86]

I guess someone had better tell both of my TRX4s that they need a BEC to drive their Savox 1230SG's because they have well over 100 hours on them now with the servos running directly off the RX and not one single problem.

 

[uk-Pedro]

You could connect the CC BEC directly to your servo. Connect the output from the BEC to the servo and connect the signal wire from the servo to the receiver. This way only the servo is powered by the BEC.

Happy soldering