Fallbrook Technologies

Auto-Shifting NuVinci^® CVP Kit for eBikes and Other Applications

If you are a manufacturer or someone who builds electric, gas-powered or pedal-assist vehicles as a hobby, kick-start your next design with the added performance and ride quality of a NuVinci auto-shifting CVP transmission from Fallbrook.

The award-winning NuVinci system can provide significant increases in performance (see the Datasheet and the CVP White Paper links below) while offering a smoother, more enjoyable ride experience with its seamless, continuously variable shifting.

The Kit offers what you need to speed design and accelerate development of a vehicle with the proven performance of a NuVinci CVP drivetrain. Application possibilities exist for light electric vehicles, gas-powered vehicles, human-powered vehicles and hybrid vehicles such as pedal-assist electric bicycles.

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NuVinci Auto-Shifting Kits now priced at $149.99 plus applicable shipping, taxes and duties. Note: the Auto-Shifting Kit contains the NuVinci N171 continuously variable planetary transmission, the predecessor to the current N360™ model. The N171 is is somewhat heavier and larger than the N360 but more rugged for powered applications. Click here to purchase a NuVinci Kit
The Auto-Shifiting Kit includes:

NuVinci N171 Continuously Variable Planetary (CVP) Transmission (silver color with 36 spoke holes) Speed Sensor and Integrated Wiring Harness

Electronic Shift Controller with 32-bit Microprocessor (operates on 12-48VDC) NuVinci Desktop™ Application and USB Connection Cable

Electronic Shift Actuator with integrated Position Encoder Detailed Instructions and Mounting Hardware

Click here to purchase a NuVinci Kit

For more details and specifications, see below and the Kit Datasheet. The User Manual is also available as well as the .NuVinci Configuration Editor 1.0.3 and Trouble Shooting FAQs.

NuVinci CVPs with different specifications can be designed for production applications. The information below applies only to the NuVinci Auto-Shifting Kit.

The Auto-Shifiting Kit specifications:

*System Electrical Requirements*
	System Voltage Range	12 to 48 Volts, DC
	System Current	5 Amps, maximum
	*The electronic components of the NuVinci CVP Developer Kit are designed to operate on a wide range of system voltages, and can be powered by a battery system or a power supply*

*Ratio* *Range* *& Installation Configuration*
	N171 NuVinci CVP Ratio Range	350% (nominal)
	Torque direction (facing the drive side)	Clockwise only (freewheels in reverse
	Frame / Swingarm Dropout Width	135 mm (5.32 in, standard bicycle)
	Orientation of NuVinci CVP	Main Shaft Horizontal to Ground
	NuVinci CVP Input Sprocket	Not Included, ISO 24 x 1.375 TPI standard interface
	The N171 NuVinci CVP transmission nominal Speed Ratio range is from 0.5 (underdrive) to 1.75 (overdrive). The product is designed to fit horizontally into a standard 135mm dropout width bicycle-style frame or swingarm. Torque is transferred in one direction only, and because of wide application differences, no CVP input sprocket is included.

Torque, Power, and Speed Limits*
	Maximum Sustained (Pulse-free) Input Torque	65 Nm (48 lb-ft)
	Maximum Instantaneous (Spike) Input Torque	130 Nm (96 lb-ft)
	Maximum Sustained Input Power	5 kW (7 hp)**
	Maximum Recommended CVP Speed	Input: 1000 RPM / Output: 1000 RPM
	Operation at these limits is not recommended for extended durations, and durability is highly dependent on duty cycle. Higher RPM, torque and power configurations can be designed for production applications. *Power rating is for electric motors, which deliver pulse-free torque. If an internal combustion engine of any type is used with the Developer Kit, a cush drive system must be installed between the engine and the CVP to dampen out power pulses from piston acceleration, otherwise internal components can fail prematurely

*Computer Operating System and Software Recommendations*
	PC Operating System, Hardware	Microsoft Windows 7, XP or Vista
	Recommended Software	Microsoft Excel
	Configuration and Shift Tables can be edited with a general text editor program (such as Notepad), but a powerful Microsoft Excel template is also included with the software to ease this task (called the NuVinci Configuration Editor).


Create custom shift maps and download to your vehicle through the NuVinci Desktop application software

NuVinci^® Support Forum

A support forum for NuVinci transmissions is monitored by Fallbrook staff members. Click here to go to the forum.

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