Whats the difference between twin motor and double motor ?

The double motor gearbox can be configured with 4 different gear ratios. The twin can only be built with 2.

I have a Tamiya 1:35 scale Sturmgeschütz IV (Kit #35087), what else do I need besides this motor gearbox to make the tank R/C?

From what I can tell from TamiyaUSA your model is basically a static display. You are going to need an RC system (transmitter(s) / receiver(s) ), propulsion (presumably DC motors and possibly but not necessary a gear box like the one you asked about. I would contact someone in the RC model business (RC planes, boats, cars, whatever) to discuss your plans.http://www.tamiyausa.com/items/plastic-model-series-20/1-35-scale-military-miniature-12000/german-sturmgeschutz-iv-kit-35087

how much more narrow is the twin motor gearbox than the double gearbox?

here are the dimensions for twin motor gearbox: Specifications:Size: 75 x 50 x 23 mmShafts: 3 mm hex, 105 mm long.The included FA-130 motors run at 3.0 Volts (4.5 V max)Stall torque: 4.6 gcmNo-load speed: 13,230 rpmCurrent: 0.5 A (each)Maximum ratio: 203:1Open axle space: 50mm each sideSpeed and Torque outputs (approximate), at 3 Volts:Gear Ratio: 58:1, 203:1Speed RPM: 230, 65Torque g-cm: 269, 941 dimensions for double gearbox:size: 70mm x 60mm x 23mm

Will this gearbox match up with the Tamiya tracked vehicle chassis or would I need to pick up the other style you sell that's around $1 more?

I have used those two together without a problem

Tamiya 70097 Twin Motor Gearbox Assembly Set

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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£75.30

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Description

⚙️ Power up your build with precision and performance!

LIGHTWEIGHT YET ROBUST - Only 100g, perfect balance of strength and agility
TRUSTED BY ENTHUSIASTS - 4.3⭐ from 245 reviews—join the winning team
TWIN MOTOR TORQUE BOOST - Double the power for unstoppable gear performance
DURABLE METAL PLASTIC HYBRID - Engineered for longevity and smooth operation
PRECISION ENGINEERING FROM USA - Crafted with exacting standards for seamless assembly

The Tamiya 70097 Twin Motor Gearbox Assembly Set combines dual motor power with a durable metal and plastic construction, weighing just 100g. Designed in the USA and highly rated by hobbyists, it delivers reliable torque and precision for advanced model assembly and upgrades.

Reviews

S**O

Five Stars

Stong this one well made id buy again

5.05.2015

C**N

Tamiya 70097 Twin-Motor Gearbox Kit ...

très bon matériel un peut dur a monter notice en chinois a recommander pour les char 1/16 en kit non radio-commander

11.03.2017

R**O

Oggetto utile / Subject helpful

Meccanismo divertente, versatile e facilmente adattabile. Adatto a chi piace il fai da te. Mechanism fun, versatile and easily adaptable. Suitable for those who enjoy DIY.

19.03.2014

M**N

タミヤ(TAMIYA) 楽しい工作シリーズ No.97 ツインモーターギヤーボックス

プラモデルの戦車をリモコンに改造できるギアーボックスです。RC用にも使えます。楽しい商品に出会えました。

10.06.2026

M**L

Una compra magnifica.

Una gran compra, producto que esperaba, para realizar varios kit. Producto que recomiendo. El próximo debería ser un poco mayor, para nuevos proyectos.

11.07.2018

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