TORQUEBOX  
(for all your ev applications) 

​Conventional transmissions whether manual or automatic are designed for internal combustion engines. The multiple gear ratios and ratio spreads work well with the rpm sensitive nature of small gas and diesel engines. For many years these conventional transmissions were primarily three and four forward speed units and in automatic, of course, incorporated a neutral, park and reverse mode as well. Over the last two decades the number of forward speeds has continued to increase in an attempt to squeeze more efficiency out of a less than efficient engine design. As the number of forward speeds has increased (now up to ten forward ratios), the size and weight has also increased, and here is the PAIN! Electric car conversions are very weight sensitive and space is always at a premium.

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Retaining the conventional multi-speed transmission when converting to electric power is wasteful to the extreme. ​

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Electric motors as a rule are much higher in efficiency and make their peak torque right from a stop and over a much broader rpm range. This means that many electric car conversions could do very well with a smaller, lighter transmission package. In fact, most could do well with a single forward speed reduction gear box. As an example, All Tesla vehicles use  a single speed gearbox. This is of course true of most all new plug-in electric cars.

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Also, brushless DC and all AC motor conversions do not need a reverse gear in the transmission as they can simply turn the motor in the reverse direction to back the vehicle up.

SOLUTION

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Torque Trends Inc. has stepped up to the plate and is addressing the transmission PAIN of electric vehicle converters all over the world. Our TorqueBox is a single speed reduction gearbox, an under drive. It is compact, usually less than one third the size and weight of the transmission it replaces. This allows the motor to be placed further back into the transmission tunnel, improving weight distribution and opening up the under hood area for battery, charger, controller placement.

Remember, the lower we can get these components, in the vehicle, the better the vehicle handles. And, of course, at approximately 36 lbs.,it saves between seventy-five to one hundred lbs. The weight savings alone is significant.

Make your plug-in electric a complete electric vehicle not an electric motor/ICE transmission vehicle. Don't stop half-way in your conversion. Instead, step up to the benefits provided by an ev-TorqueBox.

Specifications are for our reduction gearbox when used with an AC motor or any brushless motor where a reverse gear is not necessary.

MATERIAL

SPECIFICATIONS

• Housings Are 6061 T-6 Aluminum

• Input Shaft Is Through Hardened 4340 Material

• Helical-Cut Gear Set from 8620 Gear Material

• Output Shaft Forged & Through-Hardened 27-Spline/32-Spline option

• Rollerized & Balanced

• Helical Gear Ratio 1.90:1 (3.0:1 Ratio-Coming 3rd Qtr 2022)

• Run-In Tested Before Shipment

Three-Year Unlimited Mileage Warranty

EV TORQUEBOX 

Standard TorqueBox with Optional Cast or Billet Slip Yokes

Standard TorqueBox with Fixed Yoke and  Optional ParkLock System

TorqueBox Brand Extreme Duty Reduction Gearbox

TORQUEBOX OPTIONS

Adapter plates are used to join the electric motor and the TorqueTrends brand reduction gearbox. Either a custom input shaft is created, or we use our standard input shaft and a splined coupler to lock the motor's output shaft to the gearbox planetary gearset. Typically, a motor with an internally splined motor shaft gets a custom-built input in the gearbox and a motor with an externally spline motor shaft gets our splined coupler and standard input shaft.

TORQUEBOX  NOW FITS 
CASCADIA IM-225 MOTOR 

TORQUE
BOX SUB-
ASSEM-
BLIES
 

TORQUEBOX -
UQM/DANFOSS HD250 MOTOR/INVERTER/CABLES
 DRIVETRAIN PACKAGE SPECIAL

LATEST DEVELOPMENT PROJECT

TORQUE VECTORING CAPABLE-DUAL MOTOR TORQUEBOX

Dual but separate gearboxes in one gearbox housing. This TorqueBox accepts dual motors and with separate inverters allows torque vectoring. 

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Can be used as a front or rear drive unit, with a differential; or without differential for torque vectoring. Can also be set sideways in the vehicle (mid-mount) for torque vectoring of front and rear drive axles.

Accepts the Torque Trends designed ParkLock System, only one per vehicle is needed.