How To: Installing an MPI voltage regulator

[Grizzly4x4]

With the about diagram could you run power to the rx from the ecs. And not have to power the rx from the voltage regulator. Any pro or cons to either way?

Yes you could. If you eliminated the red and black wires going from the voltage regulator output to the RX, you could then leave the red wire from the ESC in place to send power to the RX. The big advantage to this is if you had a small dig servo you could run it off the ESC's BEC. This would allow you to volt up the VR's output to power the steering without fear of burning up your small dig servo.

Check out these posts for how to wire that up.
JRH's harness
My harness

One more question, do i run my dig and/or winch wires of the same voltage reg? just add a y harness and will it be enough to power all 3 or 4 servos?

Yes you can run all of them off the same output. You just have to put some thought into how much amperage draw you might have with all those servos running so that you don't overload the regulator. It's hard to say how much load you can put on it, different setups put different amounts of strain on the servos.

If your ESC has a pretty good BEC you could run the dig and/or winch servo off the BEC and just run the steering servos off the voltage regulator. See my comments to RXcrawler above.

Great questions guys 8)

 

[JohnRobHolmes]

I have been doing torture tests with high power setups (8 servos) and have found that a few recievers will take the high amp draw, but they are all plane RXs. The 75mhz jr6102 and dx6/7 rx's have been doing well. None of my ground rx's (three channel) would take it. I am starting to see that some radios dont need any pigtailing or fancy harnesses for even two or three very strong servos, which is nice.

 

[cartronicshn]

You mean just directly wiring up the voltage regulator through the receiver and the servos directly through the receiver and bec? only on plane receivers huh?

 

[JohnRobHolmes]

Yep, just plug the regulator into the RX, and servos plug directly into RX too. There might be some ground type RXs that can handle the currents without much trouble, but I haven't found them yet. Also, this would be assuming that the servo regulator is outputting 6v. If the voltage is higher it can cause problems with the RX as well.

 

[Cloak]

I dont quite get your question.

Now that I have the BEC in my hand, I think it makes more sense. The ends with no connectors go to the battery and then just plug the other 2 in line like a servo extender. I guess I didn't see that from the pics before.

What I really need to do next is figure out how to make a pass through deans plug so I don't have to solder on the connectors to the batteries.

 

[cartronicshn]

As of know i have my clod wired as the diagram indicates, it's a lot of wiring:-(, i have 2 tp 945 running my steering, i have pl beadlocks and moabs 40's + 8oz in ea front, and 2oz in back, i'am running mamba 25's and your outrunners8), i am powering my dig servo from the bec. I was just testing my rig and after 10 min the fron servo seems to slow down:x, at this point i think it is the servo that just heats up:roll:, any input before i go ahead and swap it for a new one.

 

[Cloak]

What voltage do you have it set for? Do you have a multimeter to check it? When I first plugged mine in, it was at 5V or thereabouts. I had to crank it way up (in) to get close to 6V or so.

 

[cartronicshn]

i have the mpi 134, it's set at 6v and non adjustable..i think.

 

[Unholy]

Yep, just plug the regulator into the RX, and servos plug directly into RX too. There might be some ground type RXs that can handle the currents without much trouble, but I haven't found them yet. Also, this would be assuming that the servo regulator is outputting 6v. If the voltage is higher it can cause problems with the RX as well.

I'm running my MPI VR right through the AR6000 DX6 receiver and it's powering 2 5995s at 7 volts even. Never had an issue so far.

 

[cartronicshn]

Unholy, you have no glitching issues? your front servo doesn't slow down after a while? ( i understand you are running better servos, just want to make sure what to buy next)

 

[RXcrawler]

Currently I have 2 5995s ran off a MPI voltage regulator pluged into my DX-6 reciever powered by a 6cell battery. No glitching no problems. But I'm going to soon be running a 3cell lipo so I'll have to run a different VR.

 

[Unholy]

Unholy, you have no glitching issues? your front servo doesn't slow down after a while? ( i understand you are running better servos, just want to make sure what to buy next)

I have zero glitching. I admit that when the front and rear are both in a bind, I dont have enough amps to steer both servos consistantly. That's in extreme situations and it's also as my battery has lost peak voltage so probably have lost some voltage on the other side of the regulator as well.

I'd wait for the CASTLE BEC at this point though. "thumbsup"

 

[cartronicshn]

Thanks man"thumbsup", i will take your advice and wait for Castle and get it from JRH.

 

[Cloak]

I have a "Cool BEC" question now.

Soldered in the battery side, no problem there.

Plugged the servo in to the female end, plugged the male end into the receiver.

The servo acts like it has no power at all. What could I be doing wrong with this set up?

 

[birdie_in_texas]

Dimension Engineering Sport Bec

from The Specs:

Input Voltage: 9v-33.6v (3s-8s Li-po)

Output Current: 3.5a (4-6 Digital Servos)

Also This Is 5v Or 6v Switchable..

No Esc Mod Necessary, You Do Not Have To Unplug Your Red Wire..

I Use These In Planes With No Issues..

 

[toy4crawlin]

in need of wiring help, Overloading

Mamba Max
DX6 AR6000 receiver
3 Hi torque 5995,5955 servos
2 standard servos

Would it be best to plug each servo Signal wire to RX and the servo power wires into the voltage reg :?:

Battery--to--Volt-Reg.--to--servos . Battery--to--ESC--to--RX
OR:?:
Or direct servo power to battery, 6 cell nimh 7.2 volt:?: soon going to 8 cell.

Thank you

 

[joen007]

great post helped me out a lot


thanks joe

 

[makoshark]

dual servo steering

How do you hook up the voltage regulator for front and rear steering. Two from each servo to receiver, or one from battery side of esc to the receiver.

 

[macrawler]

Yep, just plug the regulator into the RX, and servos plug directly into RX too. There might be some ground type RXs that can handle the currents without much trouble, but I haven't found them yet. Also, this would be assuming that the servo regulator is outputting 6v. If the voltage is higher it can cause problems with the RX as well.

:idea:Can you post a diagram about this setting please!!!
My R2 has 5A bec, I just have a MPI regulator in hand, I'm trying to push 2 cs-80 giant servo on a TXT-1, can I just plug one connector direct to the RX? the MPI has 2 connector, which is which??? I have fear to do it!:wink:

Thanks

 

[JohnRobHolmes]

What RX are you using?