Help with new servo for flux xl

[scottyscott]

I just bought a new Savox Servo which is high voltage 7.4 says. It's the SB 2290 SG. I know it's probably Overkill but I wanted to get a real good one that's being my first replacement. I've never programmed one of these. So my first question is do I need to program it? Zecondly how do I program it if I do? I have the Spektrum dx3 radio. Third question is do I plug it right into the receiver box or does this need its own feed from the battery?

 

[Jam Racing 1]

you do not need to program it, it just plugs into the receiver like always, you may need a glitch buster to help avoid brownouts to the receiver...... you also may want to set endpoints to keep it from stalling the servo which causes heat and can damage it.....

 

[olds97_lss]

What ESC do you have?

 

[scottyscott]

What ESC do you have?

It's the flux blur

you do not need to program it, it just plugs into the receiver like always, you may need a glitch buster to help avoid brownouts to the receiver...... you also may want to set endpoints to keep it from stalling the servo which causes heat and can damage it.....

It's only putting out 5.5 volts. The savox needs 6 to 7.5 volts.
Right now, if I don't move the steering real slow, the receiver light goes out and I lose functioning

I'm looking for which programming kit to buy to raise the voltage to 7.4.
Is the hobbywing kit capable?

 

[olds97_lss]

It's only putting out 5.5 volts. The savox needs 6 to 7.5 volts.
Right now, if I don't move the steering real slow, the receiver light goes out and I lose functioning

Sounds like you will need a BEC to bypass the ESC for power. What receiver are you using? You need to make sure it can handle more than 6V as well or the wiring gets a bit more complicated.

Even if you increase V from the ESC via settings, that won't increase current, which is probably why your seeing a "brown out" when you try to move the servo. It seems it needs more current than the BEC in the ESC can supply.

If you have the HPI Blur F360C, that's a rebadged castle ESC, the Mamba Monster V1. I had that one first and swapped it out for the MMX as the MMv1 isn't waterproof. I can't recall if the BEC is adjustable in the MMv1. I took a look at my printout from when I adjusted the settings and I had the BEC set to 6V. I suppose if I get some time later today, I can dig that ESC out and plug it into my PC and see if it's adjustable.

However, it's pretty well known that the BEC's built into castle ESC's tend to not be overly robust. Why, I don't know. I guess they like to nickle and dime their customers and get them to buy their external BEC as well as the ESC. Personally, I don't care for using an external BEC as it just adds complication and more junk to go fail and jam into an already small receiver box on many vehicles... but you do what you have to do.

From what I can see on HPI's site, the BLUR (part# 100684, castle MMv1) was replaced with the ELC-6S (part# 113126, guessing castle MMv2) which was replaced with the ELH-6S (part# 120021, rebadged hobbywing), so I'm pretty sure if your says "blur" on it, it's the castle MMv1 ESC and you need the castle field program card or USB link to update it. Go with the field card as it can be used as a USB link as well.

 

[savhead]

You need a looooot more amps then the esc’s internal bec can put out to use all that insane power!! You definitely need a external bec

Castle creations make a very good external bec (cc 10amp bec) many people including my self using it! There is a wiring diagram in the package!! A must have for power hungry servos



It’s not complicated at all

I use it in my savage flux, losi ten scte, losi 8ight, and my crawler

 

[olds97_lss]

It’s not complicated at all

Not if the receiver can handle 7.4V. Still, adds more junk to the truck.

I used a cheap one off ebay (6A) on my stampede 4x4 when I put the castle sct sv3 esc in it because it only put out 5V. Thought it was killing my range, but ended up being my receiver was causing my range issues. Still, having 6V minimum should be a default these days.

 

[savhead]

Forgot to mention that you need the castle creations programming card to get the voltage to the 7,4v that you wish!! Think the standard setup is 5.5v but it can be set to any voltage from about 5 to about 9.5v

 

[scottyscott]

Wow thanks all! Appreciate all the advice and ideas.
Yes right now the voltage is at 5.5volts.
That would be great if you could see if that voltage is adjustable.
Thanks again

Sounds like you will need a BEC to bypass the ESC for power. What receiver are you using? You need to make sure it can handle more than 6V as well or the wiring gets a bit more complicated.

Even if you increase V from the ESC via settings, that won't increase current, which is probably why your seeing a "brown out" when you try to move the servo. It seems it needs more current than the BEC in the ESC can supply.

If you have the HPI Blur F360C, that's a rebadged castle ESC, the Mamba Monster V1. I had that one first and swapped it out for the MMX as the MMv1 isn't waterproof. I can't recall if the BEC is adjustable in the MMv1. I took a look at my printout from when I adjusted the settings and I had the BEC set to 6V. I suppose if I get some time later today, I can dig that ESC out and plug it into my PC and see if it's adjustable.

However, it's pretty well known that the BEC's built into castle ESC's tend to not be overly robust. Why, I don't know. I guess they like to nickle and dime their customers and get them to buy their external BEC as well as the ESC. Personally, I don't care for using an external BEC as it just adds complication and more junk to go fail and jam into an already small receiver box on many vehicles... but you do what you have to do.

From what I can see on HPI's site, the BLUR (part# 100684, castle MMv1) was replaced with the ELC-6S (part# 113126, guessing castle MMv2) which was replaced with the ELH-6S (part# 120021, rebadged hobbywing), so I'm pretty sure if your says "blur" on it, it's the castle MMv1 ESC and you need the castle field program card or USB link to update it. Go with the field card as it can be used as a USB link as well.

The receiver is a sr200 spektrum I think

 

[olds97_lss]

Wow thanks all! Appreciate all the advice and ideas.
Yes right now the voltage is at 5.5volts.
That would be great if you could see if that voltage is adjustable.
Thanks again

It must be, mine is currently at 6V according to my print out:

I'm just not sure how high it goes. I was trying to find specs/manual for it on castle's site, but I'm only finding info for the MMv2 and MMX. The MMv2 says it's adjustable from 5.5V - 7V, but I don't see a current rating. The MMX apparently has steps, 5.5V, 6.0V, 7.5V. or 8.0V (8A Peak), default 5.5V.

In any case, that servo has a stall current of 9.2A at 7.4V, which exceeds even the MMX's limit of 8A. So your really going to need an external BEC regardless.

 

[scottyscott]

Is this all I will need to play with the voltage and whatever else ?

It must be, mine is currently at 6V according to my print out:

I'm just not sure how high it goes. I was trying to find specs/manual for it on castle's site, but I'm only finding info for the MMv2 and MMX. The MMv2 says it's adjustable from 5.5V - 7V, but I don't see a current rating. The MMX apparently has steps, 5.5V, 6.0V, 7.5V. or 8.0V (8A Peak), default 5.5V.

In any case, that servo has a stall current of 9.2A at 7.4V, which exceeds even the MMX's limit of 8A. So your really going to need an external BEC regardless.

Ok. Will I still need the field programming card that I posted a pic of? Or any other programming stuff? And I'll buy the bec you posted earlier

This is just going to be my basher. Should I just downgrade to a lesser servo? My thoughts were that I'd buy once and be good.

 

[savhead]

I’ve have not had any problems whit range with the cc bec!! Most of my receivers do not support 7.4v so instead of cutting the red wire from the esc to receiver I’ve only connect the signal wire from servo in the receiver and then connect the positive and negative wire from servo to the bec’s output wire! Then the receiver will run on the power from the esc like normal (5-6v) and the servo will get the 7.4v (okay I have to admit that now it’s getting a little complicated for some people?) but with a little focus it’s really not that hard and it work great with no issues

 

[scottyscott]

I’ve have not had any problems whit range with the cc bec!! Most of my receivers do not support 7.4v so instead of cutting the red wire from the esc to receiver I’ve only connect the signal wire from servo in the receiver and then connect the positive and negative wire from servo to the bec’s output wire! Then the receiver will run on the power from the esc like normal (5-6v) and the servo will get the 7.4v (okay I have to admit that now it’s getting a little complicated for some people?) but with a little focus it’s really not that hard and it work great with no issues

Itll come together for me when I sit down with the stuff in front of me and reread this.

I’ve have not had any problems whit range with the cc bec!! Most of my receivers do not support 7.4v so instead of cutting the red wire from the esc to receiver I’ve only connect the signal wire from servo in the receiver and then connect the positive and negative wire from servo to the bec’s output wire! Then the receiver will run on the power from the esc like normal (5-6v) and the servo will get the 7.4v (okay I have to admit that now it’s getting a little complicated for some people?) but with a little focus it’s really not that hard and it work great with no issues

Are you talking about an external bec here?

 

[olds97_lss]

Are you talking about an external bec here?

Yeah, that's what he's talking about.

That image of the program card I is all you need. It can either be used on it's own in the "field" or you can use it to connect to a PC via USB. That's what I use. I've never used it on it's own though. Easier to just plug it in, plug in the USB, open the software and adjust stuff. Then I can export the settings and keep track of what I change more easily.

Field card: http://www.castlecreations.com/en/field-link-for-driving-010-0063-00
External BEC: http://www.castlecreations.com/en/accessories-5/cc-bec-010-0004-00
External waterproof BEC: http://www.castlecreations.com/en/accessories-5/cc-bec-2-0-waterproof-voltage-regulator-010-0153-00

Could probably put the cheaper BEC in a balloon to keep water away from it like I do with my receiver in my savage.

I used a cheaper 6A BEC for my stampede, but I wasn't driving near the servo you are and I'm only running it at 6V with 2S or 3S input.
https://www.ebay.com/itm/FVT-6A-Adj...ne-Helicopter-5V-6V-7V-BEC-2S-6S/172328935150

Does fine driving a hitec 5985MG steering servo which is complete overkill on the stampede, but it's what I had on hand when my 2075 traxxas servo died. It's also driving the esc, motor fan and receiver. That BEC with the receiver barely fit in the traxxas radio box on the stampede.

 

[savhead]

Are you talking about an external bec here?

The fist line “I’ve had not had any problems with range with cc bec” was a response to old97_lss with his issue with running a low voltage bec!! The rest I’m talking about the external cc bec (castle creations 10amp bec) the external cc bec can be adjusted between 5-9v with the castle field card? sorry if I’m not posting/replying probably! I’m new on this site. Hoping I’m gettin it more clear instead of confusing more with not posting correctly ?

if Your using the castle wire diagram that I posted and program the cc bec to 7.4v your receiver has to support 7.4v!! If your receiver does not support it you have to use the my drawing

if Your using the castle wire diagram that I posted and program the cc bec to 7.4v your receiver has to support 7.4v!! If your receiver does not support it you have to use the my drawing

On my drawing the receiver run on the esc’s internal bec power 5-6v and the servo will run on the external cc bec power that you program to the 7.4v ??

 

[scottyscott]

[QUOTE="savhead, post: 21266

So I'm going to have 14 .8 volts going to the outer bec? And how do I set the bec voltage to 7.5? Is that going to be done with the Programming Card? Or is there something I'm not understanding?

Whoops I didnt see your other answer which answers these questions. Thanks again for the help.

 

[savhead]

Yes you connect the field card to the bec and pc then you can program it for output 7.4v and yes the cc bec will run on your esc/LiPo wires 14.8 if you run 4s

The cc bec has a wire like a servo and you connect that to field card and then connect the field card to pc with usb cable

The most normal settings can be programmed without pc but more detailed settings you have to use the pc too

 

[scottyscott]

Yes you connect the field card to the bec and pc then you can program it for output 7.4v and yes the cc bec will run on your esc/LiPo wires 14.8 if you run 4s

Is this the only reason I would put a bec in....if i would run 14.8volts? Otherwise why cant i just run 1 LiPo straight to servo and skip a bec? Only reason i can find is that it will weaken one battery more that the other 1.

you do not need to program it, it just plugs into the receiver like always, you may need a glitch buster to help avoid brownouts to the receiver...... you also may want to set endpoints to keep it from stalling the servo which causes heat and can damage it.....

I assume I need to find the endpoints indo in my spektrum radio manual? Thanks

 

[olds97_lss]

Is this the only reason I would put a bec in....if i would run 14.8volts? Otherwise why cant i just run 1 LiPo straight to servo and skip a bec? Only reason i can find is that it will weaken one battery more that the other 1.

The BEC makes it so you don't have to have a separate pack for the receiver/servos and also so that you don't rely on the ESC to do the job. Then the ESC is only supplying power to the motor. With that in mind, you could similarly put in a smaller 2S receiver pack as long as you disconnect the power leads from the ESC to the receiver, wire the 2S pack directly to the receiver and only use the signal wire from the ESC. Most just prefer to use an external BEC instead and rely on the main packs to run both the ESC and BEC.

 

[scottyscott]

I got the Bec installed in the voltage set it 7.5. Now I stripped my arm that attaches to the servo gear. It was just a plastic gear wrapped in a piece of metal. can you recommend a good arm to buy?

 

[savhead]

Glad to here that you got the bec installed? I don’t have such a beast off a servo like yours! I’m running a 20kg servo with the stock savage plastic horn but think that most aluminium servo horn will be okay just remember to get the right tooth count that fit your servo

 

[Sparky]

Ive ran high voltage/power servos in the past,
I couldn't get a servo horn that didn't strip alloy or plastic,
Eventually the splines on the servo will get worn through stripping horns,
I now run just regular voltage servos of my esc,
Currently a 20kg @ 6v

 

[scottyscott]

I ordered it aluminum horn. 1 minute Titans from the side to help prevent stripping. Hopefully it'll work

 

[scottyscott]

Ive ran high voltage/power servos in the past,
I couldn't get a servo horn that didn't strip alloy or plastic,
Eventually the splines on the servo will get worn through stripping horns,
I now run just regular voltage servos of my esc,
Currently a 20kg @ 6v

Sparky did you try the aluminum ones that clamp from the side?

 

[Sparky]

Yea I'd tried ones that clamp on,
With hard bashing the inside of the horn stripped out,