Recommended for . . .

  • Axial SCX24 crawler

Not recommended for . . .

  • Traxxas TRX-4M (too heavy)
Price: $59.99

    Item #: DS125CLHV-BM
    Availability: In stock
    Usually ships In the same business day

    What's this servo for?

    If you're into weighting your SCX24 with brass (everybody doesn't but those who do, you know why), then we've just made a batch of Brass Monkeys.

    Basically, it's our DS125CLHV servo but instead of CNC machining the case from a billet of 6061-T6 aircraft aluminum, we started off from solid brass billets, instead. The point? 41g vs 21g, which puts an extra 20g mounted in the right place . . . low. In short, created to help increase control for pro-level Axial SCX24 1/24th scale crawlers (not the best servo for the larger TRX-4M due to a) being a bigger/heavier rig, and lack of servo saver).

    So why did we make it? Honestly? Mostly for shits and giggles (meaning for the fun of it). Frankly, in a world of me too label-engineered servo, we did it because some of you thrive on being unique, and owning the best there is. And you make no bones or excuses for wanting the best. We totally get it.

    So basically, for some of you, this servo is better. A lot better. It's what ProModeler is about. The Brass Monkey is usually for thic rigs (because it's all about high alpha performance). The other crazies for the Brass Monkey are the race boat guys who think nothing of dropping $2000 on a heavy hydro. Anyway, for them and for comp-class SCX24-class rigs (ones with almost no actual Axial parts in them) then there's nothing better than a Brass Monkey.

    Look, this servo isn't for run-of-the-mill rigs. Why not? It's because it's not a label-engineered product (where fast buck operators slap a label on some Asian servo company's product) in an attempt to copy us and fill that niche in their product line. Honestly, we're not interested in fulfilling the needs of bottom feeders. Our goal is to meet the requirements of the savvy. Ones who grok weight and balance, e,g. are seeking über (monkey-like) agility. Hence . . . Brass Monkey!

    Of course, some buy it for looks, too. Nothing wrong with that because form follows function. Thus, the brutalist nature of the Brass Monkey has it's own appeal as eye candy and thus, the purposeful look isn't just for performance. Moreover, if you don't mind losing the laser engraved logo, you may also polish it to a high shine.

    This servo will be a revelation in what it brings to the game. For those with no clue what it's for, that's OK, we didn't make the Brass Monkey for everybody. It's special. And heads up, this is a very limited production run for showcasing the art in what we do. Frankly, it's pretty - almost jewel like - and we find nothing wrong with that.

    In short, it exists because we can make it. That, and we figure the wannabe label-engineering outfits will be calling their eastern overlords to beg for something like it for them to import. But that will take time so in the meantime, we rejoice in leading, once again. Remember the old saying; lead, follow, or get out of the way!

    Click Specs next.




    MIL-STD-810G-Part 16

    • Shock - Test Method 516.6
    • Vibration - Test Method 514.6
    • Rain - Test Method 514.5

    The Brass Monkey is made with MIL-SPEC components and tested to these MIL-STDS.

    Product Details

    Created for the uncompromising, the brass case has several jobs . . .

    • 4-hole mounting tabs
    • Reinforced transmission section
    • Bronze hard points for gear shafts
    • Steel gears
    • Environmental protection (seals)

    Electronics Section

    • Million-cycle potentiometer
    • Potting compound on PCB
    • Slip-fit brushless motor

    To begin, the foundation is the 10-bolt construction CNC-machined from a solid billet of brass with one purpose, to aid in climbing by lowering the CG of the rig.

    Gears? Steel. Why? Simple, it's because there's nothing better available for purpose.

    Installation - SCX24 & TRX-4M

    This area will contain installation tips for this servo into the neat 1/18th and 1/24th crawlers.

    What you get

    This area will contain what you get for this servo.


    These are tiny servos with even tinier gears and operating them manually via the servo horn may damage them. This damage is not covered by warranty. Please do not treat these like a standard size servos. If you fit a servo arm and zing is back and forth to feel the compression (just kidding) and damage it, it's on you. Also, if used for a micro rig, use a servo saver to help protect the gears because they're not unbreakable! You've been warned.

    Note 2

    We're often asked why we say not to use this for the throttle servo of model airplanes/boats/helicopters/trucks since a carburetor only needs maybe 10oz-in of torque. The reason has to do with the tiny component size and withstanding vibration. Even when we protect the PCB with potting compound, what we can't protect is the potentiometer because it directly links mechanically to the output gear. So even when protected with rubber isolation (which we offer as an option but don't supply as standard equipment since these things mostly go into small electric models with relatively low vibration levels), an internal combustion engine (gasoline or nitro, no matter) is feeding vibration into the pot via the throttle pushrod. This *will* destroy the servo - and really really quickly. Point being, we have too much experience with this and thus, while we love you as a customer, we don't love you enough to be warrantying what we know will break. Thus, we'd rather warn you off the product thereby risking the sale from the get go, capisci? What would we suggest instead? Maybe a DS100 is the better alternative but in truth, we'd really rather guide you to a standard size DS90DLHV equipped with a PDRS105 servo horn. Review this article to learn more.

    . . . and note, while this is aimed at modelers with gasoline engines, the same holds true for cars and trucks, boats, and helicopters with high RPM nitro engines which typically also use a very short 1/16" steel pushrod to make the linkage. Trust us we know what we're talking about . . . please!

    We're often asked about a metal servo horn. Maybe we'll get around to making one but honestly, small 25T horns are readily available. Anyway, since we use the ordinary ø6-25T spline, what most guys do is . . .

    • First set direction - NOR or REV
    • Next, use the included 6-horn star and trim excess horns with side cutters
    • Then trim to length (most leave two mount positions to experiment with).
    • Use a Dremel with drum sander - on LOW - to finish it off to taste.

    . . . and just like that, you mod the included horn to suit 'your' custom purpose!