Better parts. Better servos. The formula is simple.
Price: $99.99

    Quantity:
    Item #: DS470BLHV
    Availability: In stock
    Usually ships In the same business day

    Outputting 470 oz-in and transiting in 0.091 sec/60° the DS470BLHV standard-size digital servo is well suited for 150-200cc powered IMAC aircraft from the likes of Carden, AJ Aircraft, and Extreme Flight as well as rock crawlers like TRX4 and Wraith II.

    Initially created for our military and industrial UAS customers (primarily drones with infrared sensors for pipeline inspection as well as LIDAR equipped sensors for ag work), civilian users include professional builders and competitors on the lookout for an edge. Offered for your consideration, this brushless digital servo will deliver roughly 30 pounds of force, and do so very, very precisely.


    This is a hotly contested class with competitors offering servos with similar output. Examples can be found made by the big 3 (Futaba, JR, and Hitec) plus a host of newer players, like MKS, BK, and ProModeler.

    Once you get into the target range of 500oz-in (about 32Kg-cm) we all fine tune things with gearing. Obviously there's a direct trade-off between torque and speed. For example, you can either opt for a bit more torque at the expense of speed, and the corollary, more speed in exchange for some torque.

    You want this servo because it's better. For example, unlike hobby-grade competitors, these are hand-crafted to meet MIL-STD-810G-Part 16 (Vibration) Test Method 514.6 as well as Test Method 516.6 (shock). While it's unlikely the frame of your model will ever transmit jolts to your servos like those imparted by impacting 20mm rounds, modelers know all about crashes and engines vibrations. This alone is reason enough to want this servo.

    Of course, delivering munitions on target isn't of keen interest to professional drivers, either but the durability of this servo is a big deal. What makes it ideal for the torturous duty cycle involved in crawling a 15lb rig over rip-rap an agile man could only traverse with difficulty - and at the risk of breaking an ankle - is a case CNC-machined from a solid billet of 6061-T6 aircraft aluminum. But there's more because the pockets where the steel gear shafts fit have been bushed with bronze to enhance durability!


    If you fly IMAC maneuvers, then centering is your single-most important consideration. After all, you can't possibly fly precise maneuvers otherwise. For you, one of the principal reasons for wanting this servo are the MIL-SPEC components and genuine Nobel potentiometer. These are game changers for the sport and while we pioneered their application expressly to suit our largest customer (the one delivering ordnance on a target 8000 miles away via GPS-steering), the intense R&D required just happens to suit your needs as well. Think of it as a little lagniappe derived from your tax dollars at work!



    Once professional builders began using these servos for their discerning customers, and as competitive pilots attending IMAC events used them, then because these guys practice at club fields across the country, interest surged because sportsmen discovered them also. And amongst the especially attentive ones - for whom thoughtful touches like Allen head bolts instead of Phillips screws - was important, our reputation grew. If you have an eye for detail, little things like these are signature characteristics that differentiate ProModeler servos from the rest of the pack!

    Incidentally, this is the 5th iteration of this popular servo. We now consider it a fully mature product. Meanwhile, yet another example of how a ProModeler servo is the one you want is found in how it's protected from vibration. Competing servos depend on a little square of foam rubber sandwiched between the PCB and the bottom cover (to isolate the guts from vibration). We use an aerospace conformal coating instead (we call it monkey-snot because it's such a sticky mess to deal with and apply).

    We also pay close attention to things like dust, water, and exhaust-oil resistance. How? Through the use of 13 O-rings for sealing. Why so many? It's because truly protecting the insides from the environment means using there must be an O-ring everywhere, at the splined output shaft where it exits the case, where the three case components come together to become one, and even beneath the 10 individual screw heads!

    For example, what if while you're flying a pop-up rain shower develops before you can land? Or maybe you love to fly off water! This means protecting the servo's guts from the environment is important, right? After all, we know how pernicious water can be with respect to getting inside the servo. And this is important for all users . . .even if you never intend to take your servo underwater! But if you do plan to play submarine, then read the askJohn article regarding how to make them more water-resistant with a couple easy steps.



    Better components. Better servos. The formula is simple. Decisions regarding what go into ProModeler servos aren't made in accounting to optimize price and profit, but in engineering. This servo doesn't cost less to make than our competitors, it costs more. The reasonable price is due entirely to a better business model. One that eschews the old way of doing things (importer + distributor + hobby dealers) because they all get a cut (at your expense). With us, you're the one doing the cutting . . . because you cut these middlemen out of the deal in buying direct!

    Bottom line? These servo make good sense even if you 'are' made of money. But if you're on a budget, then many modelers consider them a godsend!


    Note: operating voltage is 4.8-8.4V, but optimal performance is obtained with a 2S LiPo instead of a BEC. This is because LiPos deliver the required current without voltage spikes, noise, or otherwise adversely affecting the delicate avionics (25C or better is recommended). After all, synthetic orange colored Tang may have gone to the moon, but it doesn't compare to freshly squeezed orange juice. Same thing when it comes to feeding your avionics!

    Other Resources

    For detailed specifications and dimension drawings, select the Specs tab above. Also, there's an even-handed look at the competition in the Comparison tab. Meanwhile, TL;DR is chock full of nitty-gritty details so if you love delving deeply into stuff some find too tedious to read, don't overlook this tab. Anyway, eyeball the Specs TAB above and see how well they match up with your requirements, then pull the trigger and add a set to your cart. You're going to love them!

    FAQ

    Q. Is it normal for the ProModeler DS470 to get fairly warm, almost hot to the touch, after 25-30 min of crawling? I set my endpoints after I first installed making sure no binding was occurring.

    A. If there is no binding, no problem . . . and yes, it's going to get hot - of course! For example, depending on how hard it's working you may be dissipating 35W, maybe more. Ever touched a 35W light bulb? Burned your finger, right? The formula for power is W=V*A so plug in for Voltage, make an educated guess on Amperage (if you don't have an inline meter), then solve for Watts. Presto, you get a lot of heat! The point is, you can't get 470oz-in of force without a lot of power. Power means heat. Always has, always will.

    Q. Sometimes when I rotate my DS470 back and forth by hand (with the power off)it reaches the stop and then gets stuck and won't move. I've never had a servo do this before, do I need to return it for service?

    A. This is not unusual with the DS470 and doesn't indicate any fault. It's a trick of the gear ratio and the servo motor. If you've ever spun a brushless motor by hand you'll recall the feel of 'cogging' as it hits the poles of the magnets. What's happening is the stop for the servo works because of a pin in the output gear (we bore the gear and press a pin into place designed to hit a mechanical stop. However, what may happen as you turn it by hand (which is a bad idea anyway because you're forcing it backwards through 402:1 gear ratio using gears with tiny teeth), anyway, what happens is you hit the stop and this happens at about zero velocity. So what with four gears in the gear train (consisting of meshes between 8 working surfaces), is it may occur between teeth, or really close, and what with the backlash (for gear sets to work, even if they're the transmission of a million dollar Formula 1 car, there is a certain amount of backlash because it's the nature of how gears mate) plus the need to overcome the cogging in the motor itself is it gets stuck. The solution is to apply power and let it center itself - and stop forcing the gears back and forth manually! You don't want to get in the habit of doing this because it's not how servo gear trains are designed to work. Anyway, this won't ever happen under power, and during use . . . so there's no problem!


    Overall Customer Rating of 43 Reviews:
    Kentucky

    A must for crawlers with big tires

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    Hands down the best servo you can buy for crawlers. I have two of these steering servos in two different TRX-4s with 2.2s and I've never been able to bind them up. I've been extremely impressed.

    Wow!!

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    Pros:
    • Quality
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    • None
    I ordered this servo on Friday at 2:40pm and rec’d it THE FOLLOWING MONDAY. I’ve never received a order that fast. I hooked the servo up at lunch, set my endpoints, and took my trx4 sport for a spin on my backyard course. Very impressive @ 8.4v. Quiet, quick, and strong. Will be ordering another in the future.




    Wrong servo

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    You guys actually sent me wrong servo...I didn't get the 470, you guys sent me the 340 one.

    Excellent

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    I just ordered 6 servos Wednesday evening. DS470 brushless. The servos look and feel quite substantial. They have some heft, a real feeling of quality. I've not used them yet as they just came in this morning! Ordered Wed and Thursday morning I got a message that they had been shipped. Very timely call backs for info and as much friendly information as you can stand on the phone. Verbose I know, but I cant say enough about how impressed I am.

    Owen Sound

    Work of art!

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    Pros:
    • lots
    Cons:
    • none so far
    Tremendous customer service, fast shipping. Absolutely beautiful. This is a product made and sold by people who take serious pride in what they do.

    Tucson, Az

    Great Product

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    Finally got to finish my build post holidays and a wait for an upgraded receiver but it was worth it. The different between 6.4v and 8v was very noticeable and performance was great at both volts. Made for a better day of crawling in some pretty tough rocky terrain.

    Great

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    Pros:
    • power
    • sleek look
    • water proof
    Cons:
    • installation hassle
    I purchased this product for my Traxxas TX-4. This servo works really well with crawlers. Has Plenty of power. If you are going to be using this servo for another crawler then you are in fantastic hands. This is top of the line. The quality of the product is freaking on point. It looks sweet right out of the box. There is one thing I did not realize when I purchased this. You will possibly need an extra battery or BEC to run this setup in your crawler. It takes a little know how and somewhat of a hassle but boy o boy is it worth it. Overall great product, great customer service, and excellent experience.

    DS 470

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    I have not opened up the case, so I can not comment on the inside construction. But the outside construction is beautiful. CNC, all aluminum case. (6) Allen bolt screws top and bottom WITH rubber washer. I mean, they really look like a nice piece of tech. They center perfectly. I mean PERFECTLY! I really like the 25 T output shaft. It makes it easier to get geometry right. I also like that the servo arm screw is an Allen head, not the dreaded Phillips head. However I WOULD appreciate an Allen head with a bit more depth to it. These low profile screws can easily be stripped where the Allen tool goes into the head. Overall, I am impressed with this servo and happy with my purchase!

    San francisco

    Promodeler 470

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    I chose this servo due to the pretty much unanimous recommendations of several RC sites. Its in my 3s 2700kv Axial Bomber at 8 volts through a mamba x esc. Fast, strong, and shiny!

    Research shows, this is the best

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    Pros:
    • Quiet
    • Strong
    • Effecient
    Cons:
    • Too shiny
    I did a lot of research into steering servos for my RR10 Bomber. Of course I looked at torque and speed but also power requirements of the servo and power limitations of the rest of the system. On paper the 470 had it all and was the most effecient. Having been an engineer for a defense contractor, I am very familiar with the requirements of MIL - STDs and testing. That convinced me that these servos HAVE to be good so I bought two, one for me and one for my brother.

    The purchasing experience has been a pleasure. It's refreshing to do business with a company that understands Customer Service. I received the servos in 2 days in spite of a hurricane.

    I've just begun to use the 470, but so far it's very powerful, quiet and looks amazing (although I would prefer a brushed aluminum finish.) I will not hesitate to purchase this servo again.


    Stansbury Park, Utah

    Great Service, Superior Product

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    I realize that the 470 was put together largely for the fliers out there, but it is performing admirably as the steeering servo in my Tenno MT410. I have really put it through some serious abuse (driver error!) over the last few weeks. I heard about it through a forum and am very pleased that I tried it out. Great Product at a an impressive price point. This will be my go to servo as I move through my stable of RCs. Thank you Promodeler!

    470oz-in, Std, BLS servo

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    • Price
    • quality
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    hello,

    Very good product of high quality, the case is very rigid and maintained by 10 screws.

    Very precise positioning of return.

    Works in Live Lipo 2S

    Dom

    Amazing product!

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    From start to finish one of the best business transactions and servos I've ever used - hands down. Their online specifications and break downs are impeccable and when combined with fast and professionally delivery I will 100% be a return customer.

    - Sebastian Busi, Oak Harbor, WA


    Southern California

    Wow, amazing servo!

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    This servo is a beast and then some. I built a Tekno RC ET48.3 and bought this servo for my steering. It’s really fast and super strong. I will only be buying servos from ProModeler from now on. Also recommend them to everyone.

    - Don Jacobs, Riverside, CA


    Yucca valley ca

    Install, adjust, never have issues!

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    Bought two of the DS470BLHV servos - so far. Love them! Running them at 7.4V on a pair of rock crawlers. Both weigh 15 pounds. By comparison, I bought a Protek R/C T150 for my 3rd crawler (at 13lbs it weighs less but it soon burned out). Highly recommend the DS470BLHV instead. install, adjust, and never have any issues.

    Works great!

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    • Quality
    • value
    • looks
    • performance
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    The DS470BLHV servo works great in my Axial Wraith crawler. Running it at 7.5 volts through a Castle BEC. Super fast and tons of torque. Quality is top notch and it looks good too! Fast shipping and great communication from the seller.

    -- Hunter Springer, newton, IA


    Ultra high quality servo!

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    Pros:
    • Quality
    • price
    • specs.
    Cons:
    • None

    I bought my 1st servo from ProModeler for my new TRX-4 kit build after reading comments on some on-line forums. I may be new to crawlers, but I've been building, and racing, RC cars for nearly 35 years so let’s just say I have installed an used a fair amount of servos over those years. The 470 oz. servo I purchased is second to none in quality. Partly made in the USA and priced very competitively with the other major brands, the specs absolutely destroys the competition. I'll definitely be buy again for future projects. Well done!

    - Andy Barbas, Simi Valley, CA


    Great customer service!

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    • customer service
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    • none

    Great servo, but what makes it better is the customer service. They stand behind the product after item is sold. The personal touch makes this product worth more than the price at which it's sold.

    - Scott Young, Marion, NC


    I couldn’t be happier!

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    Pros:
    • Quality performance price
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    • None.

    This is my first aftermarket servo and I couldn’t be happier. I’m running it in my Vaterra Ascender and it’s working perfectly. It’s very strong set at 7.4 volts through a BEC, and could go to higher voltage but I’m more than happy with it where it is. It throws the truck around if you get the wheels in a bind and doesn’t even think twice. I’ve ran it through some shallow water about 3-4 inches and works perfect. The best of all is it’s almost silent! If I need another servo, another one of these is what I’m buying.

    - Bobby Kempinski, Warren, MI


    Awesome servos!

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    Pros:
    • Speed
    • power
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    When I decided I was going to build a So Cal Monster Trucks Warpath monster truck to compete in the Trigger King Series, I knew I wanted some serious servos to complement the awesome chassis. After doing some research I came across the ProModeler DS470BLHV servos. The specs looked great, so I figured I would give them a try. Man, am I glad I did. The combination of speed and power is exactly what I was looking for. The fact they look awesome is just an added bonus!

    - David Way, Carlinville, IL


    Nc

    Servo on my heavy scx10

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    Pros:
    • Light weight a strong and fast
    Cons:
    • Power hungry needs bec

    Putting this servo on my Axial SCX10 with the stock AE5 ESC didn’t really work that well. It was really weak. Called ProMolder and they suggested the BEC wasn't inadequate. After a little time and research discovered the AE5 is only good for 2A and 5 volts. Installed a proper BEC and this really brought this thing to life. Love it now. Very fast and strong - and I have very heavy rig and tend to beat it up pretty hard - not really anything unusually to roll it down a 30 foot rock face. Going to order another one soon for my Wraith. Oh yeah plastic servo horn don’t really work with this servo on a crawler. Striped 3 before I had to make a trip to the hobby shop to pick up a good aluminum one.

    - Steven Michael, Randleman, NC


    Germantown Maryland

    My "go to" waterproof steering servo

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    Pros:
    • Speed
    • torque
    • cost
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    • none
    I have been into RC for a few years and recently started enjoying RC cars, both for bashing and in the last 2 months for crawling. I had previously bought high-end servos from 2 other manufacturers to use as steering servos in 1/8 scale monster trucks. Both perform great! When I got into crawling, I realized that with all RTR vehicles the steering servo is a weak point. I stumbled upon ProModeler after reading Facebook posts in a group I belong to and purchased a DS470BLHV for my Traxxas TRX-4 on a whim. Well, I can say that the reviews on this site are spot on. The servo is dead quiet, very fast, and strong enough to power through anything I have attempted so far. From an aesthetic point of view, these aluminum servos are gorgeous. I enjoy expertly crafted things of all sort and this servo just looks and feels like a fine quality piece of engineering art. I bought my first ProModeler DS470BLHV servo less than a month ago and have already purchased 2 more for a Vaterra Ascender and RC4WD Marlin Crawler. The servo I have in my Arrma Talion costs over $230 and it is amazing, but if I had to do it again I would get a ProModeler and be done with it. If you are looking for a solid product with world class performance that is backed by a small company that clearly cares about it's product and the RC model community, I recommended that you give ProModeler a try.

    - Steve Mace, Germantown, MD


    Costs less, but performs better!

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    It looks larger than the usual servos I use. I like how it’s cheaper than the competitor brand I usually use . . . but performs better.

    - Gilbert Gabriel, Ft. Benning, GA


    It's extremely quite and powerful

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    Been running this servo for a couple weeks now and it performs as expected. I've come from savox and man this servo even under binding (setting end points) it's extremely quite and powerful. It exceeded my expectations and it even took a couple dunks fully submerged under water. I like to test the limits and she fell in the deeper part of the rocks I was crawling that was under water. Will be getting one soon for my 8th scale!

    - Joey Pansacula, Lewiston, MO


    Excellent servo!

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    Pros:
    • Price
    • performance
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    • None
    I purchased the DS470BLHV for use in one of my rock crawler chassis. I have always used Savox because of price needs, but this one fell right into my range and I wanted to try it out. I am so impressed that i will be switching as many trucks as i can to this servo. It's not as noisy, has great power, looks amazing, and the koozie they included was an excellent touch. I have used it for almost three weeks and can not say enough good things about this servo!

    - Ryan Brewer, Edwardsville, IL