Creative Commons images are CC BY-NC-SA 3.0

249.95

added to your
shopping cart

quantity
15 available 15 in stock
249.95 1+ units
224.96 10+ units
199.96 100+ units

Description: This is easily the most rugged and beefy robot chassis in its price range. The Wild Thumper 6-Wheel platform is the best of both worlds: It takes almost no time to go from un-boxing to rolling chassis, but it's also ready to be expanded on and makes great base stock for a serious 'bot.

Each of the six motors are mounted on independent suspension and outfitted with 34:1 steel gearboxes (no more stripped gears!). The motors are wired together on a terminal strip inside the 2mm thick anodized metal frame and can be controlled on two channels (left and right). The entire chassis is perforated with 10mm pitched, 4mm diameter mounting holes and there is plenty of room interior to the chassis for batteries, drivers and other support hardware. The chassis comes with 6 of those gnarly Dagu 120mm off-road wheels.

Because there are six motors total, each channel of your motor driver will need to be able to supply a decent amount of current to get things moving. This is a differential drive platform, meaning that a turn in accomplished by simply driving one side faster or slower than the other, or turning the two sides in opposite directions. Because the "pivot point" of this turn is essentially made up of the opposing three tires a gradual turn will require less power than a sharp one and the more power you can source, the more maneuverable your platform will be.

We have had success driving this platform with our Monster Moto Shield. There is also a T'Rex motor controller listed below as well.

Dimensions: 420 x 300 x 130mm (16.5" x 12" x 5")

Features:

  • "Super Twist" suspension keeps all your tires on the ground even on rough terrain
  • Spiked 120mm off-road wheels are super 'grippy'
  • 6 x 7.2v DC motors with 34:1 steel gearboxes
  • 10mm pitched mounting holes
  • Made from sturdy 2mm thick plate aluminum
  • Recommended voltage: 2-7.5v

Documents:

Comments 48 comments

  • What does this thing weigh?

  • I noticed that the new T-Rex controller has inputs for rotary encoders. Is there any good way to work an encoder into this chassis?

    • There are places that sell these same Dagu motors with built in encoders. I presume these could be swapped out for the middle two motors (least likely to slip).

  • Hello guys,

    I would like to ask if there is any spec sheet with the pins-out of the motors. I can see that there are 4 pins for the left side and 4 for the right (red-black-white-yellow) but I don’t know where to connect them on the “Wild Thumper Controller Board”.

    Thanks in advance,

    Sotiris

  • Just got a Wild Thumper 6WD! I installed a Wild Thumper Controller connected to an old AM Futaba radio control unit. Works great, drinks amps, over-eager on those controls so careful with that stick!

    I am building a walk-beside robot. Initial (day 1) testing reveals a speed of about 4MPH up a paved 15 degree incline using 7.2V NiMH (34:1 gear ratio). Certainly fast enough for my 3.6 MPH exercise pace. It is VERY responsive to my slightly sloppy control stick movements. It’ll pop a wheelie! This will not be a factor when directly controlled by my forthcoming sensor/microcontroller piloting system. I will be able to programmaticly smooth out control changes and maybe even create an amp-saving econo-mode matching motion to my modest personal walking strides.

    Out of box trouble. Motors ran slow, very astable, jumping about, rough running and it worried me. I connected my PC, downloaded the stock demo program and that resolved all motor controller errors. Night and day difference and runs wonderfully now.

    Happy motoring! ServoHawk - Boston, MA

  • I hooked this beast up with 2x12 Sabertooth and 6000mAh 2S Lipo.It was quite fun but sadly after one day(!) two motors went dead.Is there some problem with 2S Lipo or did I had just some bad luck?

    • 2 of my motors are dead from the box. The controller (Dagu Wild Thumper controller) detects no battery, smoked when tried to charge and blew a fuse for no reason running the diagnostic test. PCB mounted and tightened bent)…

      Dead motors spin somewhat, but zero torque. Pololu has the motors for $20 each. Hope they are a little better.

  • Can you post some inside dimensions of the interior compartments? Just trying to figure out battery placement and/or selection, and I figure that’s where they’ll be going to keep the CG low.

    Edit: I see the basket drawing now, thanks. Looks like these batteries would be a good fit… http://www.all-battery.com/72v3800mahflatnimhhighpower38adrainratebatterypackswithtamiyaconnectorsforrccarsandsumorobots.aspx either fill one basket with this and the other basket for drive electronics, or move those to the deck and put in two, one per basket…

  • How does it handle water or snow? Are the motors sealed?

  • What size standoffs does the frame use? One of mine snapped & of course, we do not have it in Alaska…

  • First, this thing is fantastic & well-built, I love it!

    Now, on to powering this thing. It’s been years since I’ve dealt with the formula to compute total power requirements, so I am really messing things up trying to figure this out.

    Is the “free-run” 450mA the nominal draw when the motor is in use? Or, would I have to figure power requirements from the maximum draw of 6A?

    • I’d suggest looking more at the 6A figure. Motors draw a lot of current when they encounter resistance. This thing can draw a LOT of current. Go overboard instead of starving it for power.

      • Using those figures, here’s what I come up with:

        P = IxV = (6x3)x6 = 18x6 = 108 Watts

        That’s outrageous! 18A constant supply, I cannot find a battery that will fit that requirement AND fit on the body.

        Right now, I have 6V @ 7Ah. 7Ah/20 = 0.35Ah constant supply. Not even close…

        • I saw somebody use sub-C type battery packs with 5Ah rating… how in the world are we supposed to supply power to this thing without weighing it down (i.e., SLA), or spending a small fortune (LiPo, LiFe, etc)?

          • We used one of these and it worked just fine. 6A is peak. You need to be able to provide that for peak levels, but the nominal is going to be lower.

            Any of the batteries listed below in the relateds should work. Just make sure your max discharge rate can handle about 6A and you should be just fine. Then pick the capacity based on how long you want it to run, based on the ~450mA rating.

            • Robert, can the battery you used (and included the link for) be charged by the onboard charger functionality of the Wild Thumper Controller board? I’m trying to pick a good battery to use for the chassis I just got (along with a Wild Thumper Controller board). Thanks.

            • Thank you, RobertC, for the reply. How long a run time do you get for the 2200mA rating?

              • this would be of no help to you really. we were driving over rough terrain, spinning it in circles, etc. driving conditions will GREATLY change the overall run-time. we had it going for about an hour or more, but if you were running a course with it, it could probably go a lot longer.

  • Hello

    I want to mount a 10" laptop and a kinect on top of this chassis. So is it possible to get a wider/longer metal covering for this chasis or simply wider/longer chassis?

    Is this chassis VEX friendly, another words: is the distance between the holes in this chassis is the same as in the VEX?

    What are the best batteries for this chassis?

    Thanks in advance.

  • after reading up a little more about this platform on other places around the web, i am gald to see the wheel mounting system can accept any standard 12mm hex R/C wheel and tire combo! nice touch!

  • Looking at the motor datasheet and the size of the wheels, looks like it tops out at around 4mph. Can the motor housings be opened up and can you replace the gearmotors with direct-drive brushless motors to hopefully allow much higher speeds? I want to take it downhill skiing with me.

  • ah just spent my free day winnings towards this instead of a million smaller things. Figured if I had the platform I could build up on it over time.

  • Thought this was relevant. Chassis being used: http://www.engadget.com/2012/03/05/beetlecams-back-with-armor-on-board-and-it-brought-a-friend-pa/

  • will you be selling the 4 wheel version?

  • What wires do I need to order to connect the LiPo battery PRT-10471 to the wild thumper motor controller? What wires do I need to connect this motor controller to the terminals on the wild thumper chassis ROB-11056?

  • Pololu sells a version of the gearmotor with an integrated encoder. Will gearmotors with integrated encoders fit in the Wild Thumper’s motor housings?

    • No, they will not fit. Here at RoboSavvy we have a 4WD to play for about one year and the back of the standard motor already hits the motor housing.

      You can check here more videos of a remote controlled 6WD with camera http://robosavvy.com/forum/viewtopic.php?t=7366

  • Look here for the motors used in this: http://www.pololu.com/catalog/product/1573

    Hopefully that helps for those looking to carry out some calculations…

    Key specs at 6 V: 285 RPM and 450 mA free-run, 60 oz-in (4.3 kg-cm) and 6 A stall.

  • Any chance of getting some 3d models for this?

  • Would it be possible to get motor/gearbox specifications beyond recommended voltage? Such as stall current/torque, free speed, free current, etc.?

    • from other shop with this item: Stall current at 7.2 V: 6.6 A per motor No-load current at 7.2 V: 420 mA per motor

      so I am not sure if the Wild Thumper Controller Board with 15A per channel is good enough to drive 3x6.6A at stall…

  • http://www.youtube.com/watch?v=Mjb8qElt5P8

    Chassis weighs just over 2kg. -very strong ,versatile, a lot of space ,make all the money

  • very cool platform, as shown on the video (rc setup, controller etc) are we talking TCO around $400?

  • Before i blow something up when i buy one of these, can I get a recommendation getting max battery power and life? 6 motors seems like a lot to drive, and I don’t have any experience with how quickly that might drain a battery or what batteries to use. If i use multiple 7.2v rc battery packs in parallel, what problems might I encounter in terms of keeping them balanced? Let’s assume that i am taking each out and charging individually.

    • Hehe remember your basic electronic lessons ? If you connect minuses and pluses together (as in parallel wiring), you have the exact same voltage for all your packs, so no balancing problems there.

      Balancing issues are only relevant for serially wired cells, which is what you will probably have inside each 7.2V packs, but at this voltage I assume you’re talking about Ni based chemistry and no balancing issues there to be concerned with either.

      So to sum things up, you don’t have to charge the packs separately ;)

      • If the packs are not extremely well balanced putting 2 packs in parallel will increase self discharge. Better to use a single larger pack.

  • I may have to get one of these to play around with, but that will have to wait until I have more time.

  • Is it just me, or does it look like 2 of the 6 wheels in the picture are backwards… I don’t care, I still want one ;)

    • Nooooo… 4 of the 6 wheels in the picture are backwards! I can’t stand half-full types… Hehehe

      Those motors seem to move the bot at a pretty good clip. I wonder how much over-voltage abuse they can take.


Related Products