Servo recommendation

[Norcalmx]

Curious what you guys recommend for a servo. I do mostly slow speed crawling. Also does anyone make a kit with like servo and knuckles and all? Think the steering is my next step so any help would be great! Thanks

[TheScaleAddict]

Alright... No kit exists. But, there is hope. Go to Blue Monkey RC for steering linkage & suspension linkage with 4-link conversion plate for front. You'll need to buy Traxxas Revo rod ends, but you won't regret it. It'll be a great set up.
Steering Linkage
Front Suspension Linkage
Rear Suspension Linkage

For cHubs and Knuckles, I would recommend going to Vanquish Products. Nuff said there. Go ahead and get the Stage 1 Kit, you'll save a few bucks and you'll get the rear lockouts too.
Stage 1 Kit

As for the servo, you'll want a heavy hitter if you'll be doing slow speed crawling. At least 400oz per inch torque. I recommend theHitec RCD HS-M7990TH Digital Mega Torque HV Coreless TG. It won't let you down in the performance dept, and if it fails, Hitech will take good care of you.
Get it Here


You could wait on the suspension linkage... Steering upgrade is a must though. Do it right, and you'll only have to do it once. It'll cost more up front, but it's better than breaking it, then paying to fix it, then repeating the process until you figure out that you should have listened the first time... LOL There are cheaper servos that would do the trick... But they'll run you at least $100, and if you're going to spend that much, you might as well get the big dog!!!

[05Fronty4x]

You can do as cephas recommends and go straight for a top level steering servo, but to recommend atleast 400oz/in of torque is a over-the-top wild, IMO, for low speed scale crawling. If you are running huge tires on a really heavy rig and plan to bash it around a bit then there is some piece of mind to be had with a $100+ servo. I do the same type of crawling with a ~5lbs rig and average 1.9 tire size and the Hitec 5465 has been more than I've needed so far. There is a point where any more torque is just overkill for a given rig, and the deciding factor should be durability (strength of the gear set inside the servo). The 7950 is very strong and will hold up to punishment and should be considered for that reason, not because of the insane torque (150-200oz/in should be perfectly fine for the average scaler). If you are a controlled crawler and don't abuse your rig you would be fine with a servo costing a fraction of the 7950.

[Norcalmx]

Thanks alot for the opinions guys. I already have the links done on the front along with steering g links I made myself. Just looking to beef up the front now. Figured servo is a good place to start

[k7zpj]

I have been using the Hitec HS-7954SH on my Wraith that is setup for crawling. It has 403 oz of torque if you run it at 7.4 volts with a BEC.
HS-7954SH - Hitec RCD

You can get the servo and CC BEC for a little under $100.00

Hitec HS-7954SH High Torque HV Coreless Steel Gear Servo - Powerhobby.com

[BodiBuilt]

Originally Posted by Norcalmx

Curious what you guys recommend for a servo. I do mostly slow speed crawling...

Do you have a budget (price range) in mind?

How heavy is your rig?

Running 1.9"s only, or do you see 2.2"s in your near future?

Are you a "when in doubt, throttle out", or more of a "slow and easy when in a bind" kind of guy?

Running LiPo's?

What is your favorite color? (JK)

[05Fronty4x]

Originally Posted by BodiBuilt

Do you have a budget (price range) in mind?

How heavy is your rig?

Running 1.9"s only, or do you see 2.2"s in your near future?

Are you a "when in doubt, throttle out", or more of a "slow and easy when in a bind" kind of guy?

Running LiPo's?

What is your favorite color? (JK)

Good questions. Answering these will help others give a baseline requirement. Also, do you run an adjustable BEC with the ability to program it for 7+ volts for a high-voltage servo? If not, and you are considering a servo rated for 7.4V you need to price in something like the Castle Creations BEC and a programmer (or you can order one from Holmes Hobbies set to your desired voltage). Out of the box they normally come set for 5.1V which is fine for plane jane bottom of the line servos, but we need 6V or more for most of the servos considered for crawler steering

I'd also pick up a clamping style servo horn.

[Norcalmx]

I'm so new I don't even understand some of the terms you all use. My plan is to run 2.2 tires. I'm very easy on my rig nothing crazy yet. We will see where the hobby takes me . There is always a budget. If I can keep it around 100 I would be fine with that

[BodiBuilt]

Originally Posted by Norcalmx

I'm so new I don't even understand some of the terms you all use. My plan is to run 2.2 tires. I'm very easy on my rig nothing crazy yet. We will see where the hobby takes me . There is always a budget. If I can keep it around 100 I would be fine with that

You just provided alot of info... with the intension of running 2.2's and a budget around $100ish you should get much more accurate recommendations...

When it comes down to your steering servo IMO this is one area you should not fall short. Invest in the best one for your particular need's that still fall's within your personal budget.

Personally speaking, I am (also) a fan of HiTec servo's, and they offer several suitable versions for you to consider.

For additional reference, I went with a HS-7955TG for my Scx-10 build

[05Fronty4x]

Hmm, $100 budget...I'll say HS-7955TG too, or HS-7954SH If you want to run 7.4 volts.

[97gmctruck]

Hobbies sells a basic servo that produces 350oz of torque for about 80.00. They are rebranded hitec servos

Sent from my HTC One VX using Tapatalk 2

[97gmctruck]

That was supposed to say hobbico btw

Sent from my HTC One VX using Tapatalk 2

[65BAJA]

Another vote for the HS7954SH. Great performance and support for the price.

[AX10wannabe]

i run a hitec 7955TG on my ax10 but will be putting one in my scx10 when i can get to the hobby shop next...

what i have found on my ax10 since i dont run a BEC is that i have to run batteries that have a 30-45c rating because the 7955 takes a lot of juice....

[05Fronty4x]

Originally Posted by AX10wannabe

i run a hitec 7955TG on my ax10 but will be putting one in my scx10 when i can get to the hobby shop next...

what i have found on my ax10 since i dont run a BEC is that i have to run batteries that have a 30-45c rating because the 7955 takes a lot of juice....

BEC or no BEC your battery has to supply the amperage. You must be pushing your LiPos pretty hard with the motor alone for a single servo to make or brake your performance (we are talking about <5A here). 10 years ago a small LiPo may have had trouble supplying the needed juice for a motor and a power hungry servo, but with a 5000mAh pack your servo is using less than 1C. I can run Thunder Power 1320mAh 3s packs from 2005 without issue, and they are only rated for 17A continuous draw.

Sorry, a little off-topic.

[crawler nut]

7954 would be more than enough for a light weight 2.2 scaler. The 7990 is exactly the same as a 7980 torque wise and is a plus size servo meaning it's bigger than a standard servo and there is no need for that in a scaler. The 7954 is a great servo and can be had for around $80 if you shop around. The 7950 is a top of the line standard size servo but it more in the $130-150 range.

[jkabee]

Another suggestion for you if ou don't like $80+ servos, is the Savox SC-0251MG High Torque Metal Gear Digital Servo. They offer 222 oz-in of torgue and the Savox nme brand for onl $35 on eBay. That's 3 times as strong as the stock scaler servos in SCX10 rtrs, for a small amount of money. Whether or not that will be enough for you will depend on how extreme you run your rig. Maybe not ideal for TTC, but good enough, especially at this price, for 90% of crawler apps.

[TheScaleAddict]

Clearly, y'all aren't from Texas. ;) good call on the HS-7950TH. That's actually the servo I meant to recommend. I was writing an article for Hitech and I copied the wrong text and pasted it in. My bad on that wing dinger of a whoops. They're all correct in stating that other servos would be adequate. I Gand to go with having more than I need so that I never find myself needing more. Not everyone agrees with that philosophy, which is fine. Lots of good advise here.

[k7zpj]

Originally Posted by Norcalmx

I'm so new I don't even understand some of the terms you all use. My plan is to run 2.2 tires. I'm very easy on my rig nothing crazy yet. We will see where the hobby takes me . There is always a budget. If I can keep it around 100 I would be fine with that

Did you end up with the information you needed to pick out servo?
If there terms you still don't understand let us know and we will try to explain.

[Norcalmx]

Ya you guys gave me so much info thanks a ton