Looking for recommendations on a servo and servo horn that will fit SCX10 II

[SaltyDog]

Hello everyone. First time posting here but I’ve been using this forum as a learning resource for a couple months now. Figured it’s time to start asking some questions of my own.

I ordered an SCX10 II builders kit yesterday with a HW 1080esc and Holmes Hobbies Trailmaster Sport 550 21t, however I still need a servo. Reading through all the reviews and threads I’m begging to realize servo choice is a very active debate, but the bigger issue is that I’m seeing lots of people mentioning the incompatibility of certain horns when installed on the SCX10II chassis. Basically how they make contact with the links or other parts. To add to my confusion with the horns, some of the servos I was looking at are listed as “tall” and I’m not sure if that changes the recommended servo horn length.

I’m wondering if any of y’all would be able to recommend a servo and horn pairing that is tested and works good. For reference I’m rolling on 1.9’s with 4.7” tires and a hard body (not sure how much weight that actually adds). It would be great if it was waterproof and didn’t require a BEC, but the BEC isn’t a deal breaker... I’ve just never used one.

 

[ferp420]

last i checked there wasent one made spacificly for the scx10ii probably cause there universal the only thing you really need to know is if its 23 spline or 25 spline
the biggest issue with servo horns is the splines striping out so a cheap one might not hold up as good as a more exspensive one
i would look at clamping type servo horns

 

[ferp420]

for 1.9 tires you dont need to much for a servo but for alot of people to much power is just enuff
the low range about $15 is ds brand servos the 20kg servos or the 25kg version or you could go all the way to the other side and go with american made servos like pro modler or hybrid like holms hobbies there both bomb proof servos

basicly for 1.9 tires on a scale truck any servo will work but a high torque metal gear servo is prefered 20kg or higher for metric rated servos or around 300 inch/ounces or higher for imperial rated servos

some higher end servos are direct power so they get power from the main battery instead of the reciver/bec so there easyer to wire up
non direct power servos like savox or pro modlers will need a external bec they draw to much power to run of the reciver power and cant handle the voltage directly from the battery so you need regulated power or a bec

 

[SaltyDog]

for 1.9 tires you dont need to much for a servo but for alot of people to much power is just enuff
the low range about $15 is ds brand servos the 20kg servos or the 25kg version or you could go all the way to the other side and go with american made servos like pro modler or hybrid like holms hobbies there both bomb proof servos

basicly for 1.9 tires on a scale truck any servo will work but a high torque metal gear servo is prefered 20kg or higher for metric rated servos or around 300 inch/ounces or higher for imperial rated servos

some higher end servos are direct power so they get power from the main battery instead of the reciver/bec so there easyer to wire up
non direct power servos like savox or pro modlers will need a external bec they draw to much power to run of the reciver power and cant handle the voltage directly from the battery so you need regulated power or a bec

So are you suggesting a 20kg or 300 in-oz should be the base line for servo torque? Before reading your comment I was looking into the Savox SW 0231MG, but it looks as though it only provides 208 in-oz.

 

[tigris99]

You need a servo with enough power, most come with horns, want an aluminum at minimum, steel is better. Servo and horns are far from single rc specific. It's standarded among all of them. Axial, element, rc4wd, traxxas and so on. All fit the same servos.

The bigger the tires and heavier the rig, the more powerful the servo though. Don't need to spend a ton. Most people I know run 300kg servos from Amazon. I have a 450

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[ferp420]

So are you suggesting a 20kg or 300 in-oz should be the base line for servo torque? Before reading your comment I was looking into the Savox SW 0231MG, but it looks as though it only provides 208 in-oz.

20kg and 300in-oz are 2 different numbers i do t know how many in-oz 20 kg is or how many kgs a in-oz is and the convertion formulas ive seen are all over the place so im kinda guessing but there close enuff in my mind

i think 208 is gona be alittle week

also savox servos altough there decent servos there loud theres almost always a buzzing sound coming from the servo

 

[SaltyDog]

Servo and horns are far from single rc specific. It's standarded among all of them. Axial, element, rc4wd, traxxas and so on.

I guess I just meant ones that don’t require spacers, or if they do, what mm. I’ve also been coming across 24mm and 20mm horns. My initial thought was 24mm till I started seeing videos with people using 20mm.

Maybe I’m just getting too technical about it and I should just get a steel horn and powerful servo. Just want to save money and not have to reorder or order more if possible.

 

[tigris99]

Nothing should need a spacer unless you buy some funky size. With the horn, closer to the drive the more torque but more travel required so may not turn wheels fully. Also geometry may not allow you to run the link at either extreme end of a horn.

Personally, stick with 20mm, 24 takes more torque to move.

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[SaltyDog]

Nothing should need a spacer unless you buy some funky size.

So you don’t think I’ll need any spacers for a Savox 1210SG “tall”. First time ever mounting a servo facing downwards.

 

[tigris99]

A tall servo I'm not sure on your specific application but my enduro has plenty of room as I have a tall in it, so you would be fine would think.

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[lonleycreeper]

I use a Savox 0231 in my Trail King, it works good and has been very reliable. It has more torque than a rtr servo though there are situations where the front wheels don't always turn when I want (high traction or in a bind).

Most rtr servos are in the 100-120ozin range,and as long as you keep the truck fairly light and have reasonable expectations from the servo they work pretty good. For the longest time I ran Hitec 646 servos (133oz)and rarely had a problem, but they drove like a truck without power steering lol.

My latest servo is a Savox 1212 (645ozin). Its going in a heavy 2.2 size old school Bronco 9+lbs I am currently building cant wait to see how it performs.

As far as height most standard size servos will fit in the mounting, spot for the scx10II. You might have to make adjustments with washers and or where you put the mounting tabs (top or bottom) on the mount to get the panhard bar to line up with your steering arm.

Also, I highly recommend a vanquish 20mm servo horn in the flavor needed (25t for savox, 24t for hitec) but I used plastic servo horns for Years without issues. (I don't like the horns that come with the Savox)

And you need a picture or two in your thread... so here you go!

 

[SaltyDog]

Thanks a ton for that information, really helps a lot. I think I may go with a Savox 1210SG. I’m using the HW 1080 ESC so I believe it’s built in BEC should be able to handle its 7.4v consumption, and it’ll put out 444oz/in. That paired with a pack of 1-2mm spacers and a vanquish 20mm horn, I should be crawling!

 

[ferp420]

Thanks a ton for that information, really helps a lot. I think I may go with a Savox 1210SG. I’m using the HW 1080 ESC so I believe it’s built in BEC should be able to handle its 7.4v consumption, and it’ll put out 444oz/in. That paired with a pack of 1-2mm spacers and a vanquish 20mm horn, I should be crawling!

that savox servo absolutly needs a external bec 3 amps wont be enuff amps the servo will get hot and brown out maybe even burn up and take the esc with it and its noisy

wana ask me how i know mine lasted about 2 days the larger savox on a 8 amp bec lasted about 6 months and after about 15 min it was almost to hot to touch the glitch buster helped but only if i was carfull with my driving

there was a member her that did a video documenting the amp draw from alot of diferent servos the savox were almost always the hungryest servos he tested

i really like the direct power servos no need to worry about power draw
they do have budget direct power servos if you dont feel like droping $200 on a servo

 

[SaltyDog]

Aw man, I was really hoping I had found a waterproof high torque servo that didn’t require an external BEC. I also was looking at the 1230SG with 500oz/in at 6.0v... but it’s not waterproof.

I’m trying to navigate my way around not needing a BEC because I don’t have access to a soldering setup and I’ma little hesitant to invest in one since it will almost never get used.

 

[King Dork]

I don’t have access to a soldering setup and I’ma little hesitant to invest in one since it will almost never get used.

If you remain in the hobby a soldering station will become a necessity.

 

[SaltyDog]

If you remain in the hobby a soldering station will become a necessity.

True. Any recommendations on a budget setup? Was looking at the Pinecil.

 

[Fallen]

When it comes to soldering, don't buy a budget set up. You will regret it, as it makes soldering much more difficult especially if you're trying to learn how to do it.

If you already know how to solder, and you only plan to get one project out of an iron, then buy the $15 iron.

But if you have room in your home for a soldering station, you really will save money by just buying a nice station first. The nice ones I've seen are generally run from $90 -$150 and are very much worth it.

Otherwise, a $15 Home Depot cheapie will get a quick job done.

 

[SaltyDog]

that savox servo absolutly needs a external bec 3 amps wont be enuff amps the servo will get hot and brown out maybe even burn up and take the esc with it and its noisy

wana ask me how i know mine lasted about 2 days the larger savox on a 8 amp bec lasted about 6 months and after about 15 min it was almost to hot to touch the glitch buster helped but only if i was carfull with my driving

there was a member her that did a video documenting the amp draw from alot of diferent servos the savox were almost always the hungryest servos he tested

i really like the direct power servos no need to worry about power draw
they do have budget direct power servos if you dont feel like droping $200 on a servo

What do you think about the Savox 1230SG running on the 1080 esc’s 7.4v BEC? The specs say it’ll put out 500oz/in at 6.0v.

 

[King Dork]

What do you think about the Savox 1230SG running on the 1080 esc’s 7.4v BEC? The specs say it’ll put out 500oz/in at 6.0v.

If you’re depending solely on the internal bec of the 1080 esc, DON’T GET A SAVOX SERVO! Savox servos are known for drawing more amps than other servos of comparable or even better specs. If you want a kick ass servo and run a 1080 you’re either going to NEED to go direct power or add an external bec. That’s what I did for 3 of the 6 rigs that I’m running 1080s in. The other 3 have much more mild servos.

 

[SaltyDog]

If you’re depending solely on the internal bec of the 1080 esc, DON’T GET A SAVOX SERVO! Savox servos are known for drawing more amps than other servos of comparable or even better specs. If you want a kick ass servo and run a 1080 you’re either going to NEED to go direct power or add an external bec. That’s what I did for 3 of the 6 rigs that I’m running 1080s in. The other 3 have much more mild servos.

Ok understood, there’s no way around the BEC if I want a high torque servo while using the 1080. Welp, time to get some equipment I guess. I see a lot of people suggesting the Castle Creations 10 Amp Adjustable BEC.