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Tamiya 70168 Double Gearbox

4.2 out of 5 stars 392 ratings
$13.72 with 6 percent savings
Typical price: $14.60
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Purchase options and add-ons

  • Made from high quality materials and designed for long lasting performance
  • Use Tamiya stock and hop-up replacement parts, accessories, and more to get the most out of your models
  • This is for use on RC and model products, consult your user's manual for exact parts listings
  • Package dimensions: 6.1" L x 4.33" W x 1.18" H
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Frequently bought together

Tamiya 70168 Double Gearbox
This item: Tamiya 70168 Double Gearbox
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Usually ships within 3 to 4 days.
Ships from and sold by Modellbahn Ott Hobbies, Inc..
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Product information

Product Dimensions 6.1 x 4.33 x 1.18 inches
Item Weight 4 ounces
ASIN B001Q13BIU
Item model number TAM70168
Manufacturer recommended age 16 years and up
Best Sellers Rank #460,616 in Toys & Games (See Top 100 in Toys & Games)
#318 in RC Vehicle Transmission Gearboxes
Customer Reviews
4.2 out of 5 stars 392 ratings

4.2 out of 5 stars
Is Discontinued By Manufacturer No
Manufacturer Tamiya
Date First Available December 17, 2004

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Product Description

Tamiya ventured into the modeling business in 1948, with a scale wooden ship model kit. Since then, Tamiya has been striving to offer merchandise that can truly be called "First in Quality Around the World." Now Tamiya is offering more than 3000 different products, both in the fields of precision static models and high performance radio control vehicles. These products are not only sold in Japan but also exported in vast quantities to the United States, Europe, South East Asia, and to many other parts of the world. The standard of excellence achieved by Tamiya is regarded as among the very finest in the world of model hobbies.

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What's in the box

  • Tamiya 70168 Double Gearbox

    • Customer reviews

    4.2 out of 5 stars
    392 global ratings

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    Customers say

    Customers find the gearbox works well and is easy to assemble, with clear instructions and multiple gear ratio options. The build quality is good, and customers consider it a fun hobby kit that's worth the price. The motor power receives positive feedback, with customers noting it puts out plenty of torque. Customers have mixed opinions about the size, with several mentioning the parts are rather small.

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    47 customers mention "Works well"47 positive0 negative

    Customers find that the gearbox works well, with one customer specifically noting its compatibility with Tamiya track systems.

    "...It is easy to assemble and works well. It took me about an hour to put it together and mount it...." Read more

    "...The gearbox is cool. It has the availability of 4 gear ratios and is powered by small hobby motors and plastic gears with metal drive shafts...." Read more

    "...Explains the gear ratios and working of gear boxes really well...." Read more

    "This is an excellent double gearbox. Its cheap, and gets the job done for those intro to robotics projects...." Read more

    38 customers mention "Ease of assembly"33 positive5 negative

    Customers find the gearboxes easy to assemble, with correct instructions and simple assembly process, and one customer notes that changing the ratio is straightforward.

    "...It is easy to assemble and works well. It took me about an hour to put it together and mount it...." Read more

    "...It takes a little while to put it together, but it is not too hard...." Read more

    "...It was like a refresher for an Engineer who has never worked with gear boxes and mechanical aspects as a profession...." Read more

    "...As a hobby gear box this package is great! Good instructions on how to set up gear ratios and when assembled with intended motors works perfect!..." Read more

    28 customers mention "Gear ratio"21 positive7 negative

    Customers appreciate the gearbox's multiple gear ratios, with one customer noting it can be assembled in four different combinations.

    "...The gearbox is cool. It has the availability of 4 gear ratios and is powered by small hobby motors and plastic gears with metal drive shafts...." Read more

    "...Manual was very useful as well. Explains the gear ratios and working of gear boxes really well...." Read more

    "This is an excellent double gearbox. Its cheap, and gets the job done for those intro to robotics projects...." Read more

    "...What it is is a gearbox with 4 gear ratio options. This kit is fairly easy to assemble, but beware, there are MANY SMALL PIECES...." Read more

    17 customers mention "Build quality"17 positive0 negative

    Customers appreciate the build quality of the gearbox, with one mentioning it's strong enough to drive a small vehicle, while another notes it's a great upgrade for the Tamiya Tracked Vehicle Chassis Kit.

    "...a toy made of cheap plastic - but I was amazed to see the build quality to begin with. Manual was very useful as well...." Read more

    "...Quality is great and construction is easy. There are 4 possible gear ratio combinations. That is my main gripe with this kit...." Read more

    "...and nicely fitting miniature sleeves / plain bearings to keep it running wear free...." Read more

    "...The gearbox is easy to assemble and reconfigure, and seems to be quite durable, as I have reconfigured the gear ratio several times now without any..." Read more

    14 customers mention "Fun to build"14 positive0 negative

    Customers find the gear box fun to build, describing it as a great hobby kit that's enjoyable to assemble.

    "...Great little kit." Read more

    "Fun to build, easy to implement...." Read more

    "Under powered motors. Uses standard 3v dc motors. Good learning project/kit" Read more

    "Had fun building this double gearbox. Be aware that the parts are rather small so will want appropriate tools for fine detail work...." Read more

    13 customers mention "Value for money"13 positive0 negative

    Customers find the gearbox well worth the price, appreciating both its quality and value.

    "This is an excellent double gearbox. Its cheap, and gets the job done for those intro to robotics projects...." Read more

    "...bought about 8 or 9 of these over the last 4 years best for the money for controling motors..." Read more

    "...Easy to assemble, very sturdy and last but not least a very good value for the price. I would buy it again without hesitation." Read more

    "...Certainly worth the money." Read more

    7 customers mention "Motor power"7 positive0 negative

    Customers appreciate the motor power of this gearbox, with several noting it puts out plenty of torque, and one customer mentioning it uses standard 3V DC motors.

    "...It has the availability of 4 gear ratios and is powered by small hobby motors and plastic gears with metal drive shafts...." Read more

    "...and broke them down to change the ratio out, these boxes have independent motors and gearboxes single ratio at a time and not all that complicated..." Read more

    "...motors are standard 130 frame; I've replaced the 3 volt ones in the kit with 6 volt versions from uxcell - works great...." Read more

    "Under powered motors. Uses standard 3v dc motors. Good learning project/kit" Read more

    8 customers mention "Size"2 positive6 negative

    Customers find the size of the gearbox problematic, with multiple reviews mentioning that the parts are rather small, and one customer noting that the motor is too wide for the 70157 Universal Plate.

    "...This kit is fairly easy to assemble, but beware, there are MANY SMALL PIECES...." Read more

    "...to assemble, but be aware that it does require assembly and the pieces are small and it takes a certain amount of balancing and coordination to put..." Read more

    "...comes with a [tiny] tube of gear lubricant and nicely fitting miniature sleeves / plain bearings to keep it running wear free...." Read more

    "...BE ADVISED: This Gearbox is to wide to fit the Tamiya tank board and the Universal board as-well I had to mount it with zip-ties...." Read more

    A fun little gear box to build
    5 out of 5 stars
    A fun little gear box to build
    A fun little gear box to build. It was strong enough to drive a small, 2 wheeled Arduino robot, and at the highest gear ratio, it was slow enough to watch how everything worked. Certainly worth the money.
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    Top reviews from the United States

    • My Penname
      5.0 out of 5 stars It's a great little gearbox.
      Reviewed in the United States on February 4, 2014
      Verified Purchase
      First, this is the Tamiya 70168 Double Gearbox Kit. -This is NOT the very similar but different Tamiya 70097 Twin-Motor Gearbox Kit. While they are similar they have different dimensions so be sure you are getting the right kit for your application.

      This gearbox kit arrives in flat sheets similar to model cars. It is easy to assemble and works well. It took me about an hour to put it together and mount it.

      This is a single speed double gearbox that can be assembled in four different gear combinations. This gearbox does NOT shift though four gears like a car transmission. To change the gear ratio you must disassemble it. It is assembled with screws so it is possible to change gears several times if you choose to.

      This gearbox is open so if it is exposed to dirt or debris the plastic gears will have a very short life. I would not recommend it for outdoor applications unless it is in a sealed body. Also, bear in mind it is 'toy' class gearbox and is not made to perform real work.

      The included Mabuchi motor FA-130 motors pull about .2A with no load and 2.2A when stalled (at 3v). Be aware that most 130 size toy motors will fit this gearbox so you can replace them or upgrade at your leisure.

      I used this gearbox with the Tamiya 70100 Track and Wheel Set & 70157 Universal Plate Set. To mount the gearbox on the universal plate I had to use the included sub-plate and it worked well. Because the 70168 Double Gearbox is wider then the 70097 Twin-Motor Gearbox I had to drill the axle hole through the drive sprockets to allow proper track alignment. Not a big deal but it is worth mentioning.

      I would buy it again and I would recommend it to a friend.
      37 people found this helpful
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    • B. Evans
      4.0 out of 5 stars Adequate.
      Reviewed in the United States on April 12, 2015
      Verified Purchase
      Used this as a gearbox for a wind turbine project. The left and right axles turn independently, so we had to modify the box to allow them to turn in tandem. Generates quite a bit of torque for the size and price which made it difficult to use in a generator setup, but the ability to reconfigure the gears to different gearing ratios was interesting and the instructions were clear enough.

      There is a bit of "rattle" between each of the gears -- they aren't terribly tightly fit (not that I was expecting ultra precise machining at this price point) but it did mean that the gears "slipped" quite a bit at high RPM.
      4 people found this helpful
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    • Frank_F
      5.0 out of 5 stars Great Robotic or Small RC gearbox
      Reviewed in the United States on March 19, 2015
      Verified Purchase
      As with others, I bought this with the Tamiya tank track vehicle platform kit.

      The gearbox is cool. It has the availability of 4 gear ratios and is powered by small hobby motors and plastic gears with metal drive shafts. All of the gears also ride on metal shafts and have brass looking bushings at the mounting point to the gearbox body. You literally assemble everything but the motors themselves and you do have to press the gear on the motor shaft (by hand). It takes a little while to put it together, but it is not too hard. They do provide the tiny Allen wrench needed and the only other tools you will need are something to snip the gears out of the plastic form and a Phillips screwdriver.
      It is nice and it works fine understand this is for a lightweight platform. Motors are audibly pretty quiet as are the gears. I'm running at 3.5v but have tested with a fresh 4.8v pack, both seem fine. If interfacing with electronics, you will need a motor controller or H bridge to handle the current - you can not hook this directly to your microcontoller or RC receiver if there is not a motor control built in.
      One person found this helpful
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    • freebird
      5.0 out of 5 stars informational toy, good build quality.
      Reviewed in the United States on May 20, 2016
      Verified Purchase
      The media could not be loaded.
      I was expecting a toy made of cheap plastic - but I was amazed to see the build quality to begin with. Manual was very useful as well. Explains the gear ratios and working of gear boxes really well. It was like a refresher for an Engineer who has never worked with gear boxes and mechanical aspects as a profession. Our son made numerous models with it & he could learn gear ratios, making circuits etc as well assembling DIY vehicles (?) combining bits and pieces of various toys.
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    • MNorris
      4.0 out of 5 stars Great intro double gearbox.
      Reviewed in the United States on March 4, 2014
      Verified Purchase
      This is an excellent double gearbox. Its cheap, and gets the job done for those intro to robotics projects.

      Things to note: the gears are plastic, and are not adjustable. Choose one gear ratio and build it.

      The motors are 3v 130 type. So if you want to use this with a motor shield (ex the adafruit motor shield v2), you will need to buy some 5v 130 motors. Otherwise it will work fine for your project.

      Great product!
      10 people found this helpful
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    • ANeathery
      5.0 out of 5 stars Great gear box for projects!
      Reviewed in the United States on October 23, 2013
      Verified Purchase
      I purchased this gear box when I was building a six legged walking machine and needed a gear box to fit between my brushless motors and the drivetrain. The supplied motors were too weak and I tried to modify the box to allow me to mount some hobbyking brushless motors. I couldn't ever get the gears to stay meshed from the with the high torque that the motors put out. The gears never stripped which is impressive but they would skip. Tough gears.

      As a hobby gear box this package is great! Good instructions on how to set up gear ratios and when assembled with intended motors works perfect! Great way to learn about how gear ratios work.

      Only problem I had was my own fault trying to use brushless motors, other than that this is a great product!
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    • Bud Ryerson
      3.0 out of 5 stars Warnings
      Reviewed in the United States on July 26, 2014
      My big problem is that I bought the 70157 Universal Plate set because it said "universal." Wrong! You need the 70098 Universal Plate set for this gearbox and motor. They could have been more clear that there are two incompatible "universal" plate sets. Anyway, I made it fit. The gearbox seems interesting and it was easy to assemble. I look forward to putting it to work someday. The electrical contact tabs for the motor are exposed, extremely light and very fragile. I worry about them.
      5 people found this helpful
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    Top reviews from other countries

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    • GWANGI
      5.0 out of 5 stars I receive so fast my item 70168
      Reviewed in Canada on March 22, 2019
      Verified Purchase
      I put this in my model kit Sherman tank model and it work well, thank you !
      Report
    • 井上英則
      5.0 out of 5 stars Good
      Reviewed in Japan on February 26, 2024
      Verified Purchase
      Good
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    • S S Melligeri
      5.0 out of 5 stars Excellent gear box
      Reviewed in India on October 13, 2020
      Verified Purchase
      Easy to assemble best quality
      Customer image
      S S Melligeri
      5.0 out of 5 stars
      Excellent gear box

      Reviewed in India on October 13, 2020
      Easy to assemble best quality
      Images in this review
      Customer image
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    • Client d'Amazon
      5.0 out of 5 stars Bonne qualité
      Reviewed in Canada on March 19, 2019
      Verified Purchase
      Pour transformation en Rc d'un véhicule Bruder D5 et 530
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    • chandan jha
      5.0 out of 5 stars As shown in the image
      Reviewed in India on January 10, 2017
      Verified Purchase
      Works fine and a must buy
      Report