Accessories	Bicycles	Parts	Specials	Tools

In West Newton Since 1952 - On The Web Since 1995

We ship hard-to-find parts, tools and accessories all over the world

Search HarrisCyclery.com Search WWW

ATC NuVinci Continuously-Variable Bicycle Hub

36 Hole Silver: HUH276; 36 Hole Black HH277 $439.95

Internal gear hubs have been around for over a century. Initially they were 3-speed models. Later 4-, 5-, 7-, 8-, 9-, 12- even 14-speeds came along. The new NuVinci hub from Fallbrook Technologies goes farther yet, it is a continuously-variable hub, with an infinite number of "gears!" Using a novel system of rotating spheres instead of toothed, fixed-ratio gears, the NuVinci hub permits you to fine tune your gain ratio steplessly, giving you exactly the gain ratio you prefer for any conditions, within its range. Here's a YouTube video showing how it works:

Fitting Requirements/Specifications

• Fits frames with 135 mm spacing (most "mountain" and "hybrid" frames, many newer touring frames. Older frames can often be spread to fit.
• Requires dropouts with derailer hanger tab. (This hub uses the derailer hanger as an anti-rotation fitting to keep the axle from rotating.)
• Spring-loaded chain tensioner or eccentric bottom bracket required to regulate chain tension.
• With a spring loaded tensioner, may be combined with a front derailer and multiple chainrings for increased gear range.
• Single speed freewheel not included.
• 4,100 grams.

Twist Shifters and Drop Handlebars.

The Fallbrook NuVinci hub works only with shifters made for it.

These shifters are designed to fit straight handlebars with a 7/8" (22.2 mm diameter.) This includes basically all upright or "mountain bike" type handlebars, but does not include drop bars as used on most touring bikes.

There are several ways to get around this limitation however. Probably the best is the HubBub adaptor mount:

LD103 HubBub Bar End Adaptor $54.95 This is a very nicely made extension that fits into the end of your drop handlebar. It uses the same mounting hardware as Shiman bar-end shifters. The position is quite convenient. If you wish, you can cut the bar itself shorter on this side. If you are handy, here are a couple of alternatives: Auxilary "stub" handlebar Modified bar-end I have used both of these, but I prefer the ergonomics of the HubBub setup. It's really convenient, in fact much more convenient than bar-end derailer shfiters, because it uses a motion more natural to the human hand.

HubBub Adaptor

Sheldon Brown's Internal Gear Calculator for Internal Gear Hubs

Wheel Size	27 inch (nominal) 26 inch (nominal) 700 X 56 / 56-622 700 X 50 / 50-622 700 X 44 / 44-622 700 X 38 / 38-622 700 X 35 / 35-622 700 X 32 / 32-622 700 X 28 / 28-622 700 X 25 / 25-622 700 X 23 / 23-622 700 X 20 / 20-622 Tubular / Wide Tubular / Narrow 27 X 1 3/8 / 35-630 27 X 1 1/4 / 32-630 27 X 1 1/8 / 28-630 27 X 1 / 25-630 26 X 2.35 / 60-559 / MTB 26 X 2.125 / 54-559 / MTB 26 X 1.9 / 47-559 / MTB 26 X 1.5 / 38-559 / MTB 26 X 1.25 / 32-559 / MTB 26 X 1.0 / 25-559 / MTB 650 x 38b / 38-584 650B 650 x 28C / 28-571 / 26" road/tri 650 x 25C / 25-571 / 26" road/tri 650 x 23C / 23-571 / 26" road/tri 26 X 1 3/8 / 35-590 24 inch (nominal) 24 x 1 / 25-520 20 inch (nominal) 20 X 1.75 / 44-406 / BMX 20 X 1 1/4 / 28-451 18 x 1.5 / 40-355 17 x 1 1/4 / 28-369 16 x 1 3/8 / 35-349 16 x 1.5 / 37-305
Crank Length	150 mm 152 mm 155 mm 160 mm 162.5 mm 165 mm 167.5 mm 170 mm 172.5 mm 175 mm 177.5 mm 180 mm 185 mm 190 mm
Gear units	Gain Ratios Gear inches Meters Developement MPH @ 40 RPM MPH @ 60 RPM MPH @ 80 RPM MPH @ 100 RPM MPH @ 120 RPM KPH @ 40 RPM KPH @ 60 RPM KPH @ 80 RPM KPH @ 100 RPM KPH @ 120 RPM
Chainring Size(s)
Rear Sprocket Size
Internal Hub	Rohloff Speedhub 14-speed NuVinci continuously-variable range SRAM i-Motion 9-speed Shimano Nexus 8-speed Shimano Nexus 7-speed Shimano Nexus 4-speed Shimano Nexus Inter-3 SRAM/Sachs Spectro new-style 7-speed SRAM/Sachs/Torpedo old-style 7-speed SRAM/Sachs/Torpedo 5-speed SRAM/Sachs/Torpedo 3-speed, including 3 x 7 SRAM/Sachs Elan 12-speed Sturmey-Archer 8-speed Sturmey-Archer AB wide-ratio 3-speed w/brake Sturmey-Archer AC close-ratio 3-speed Sturmey-Archer AF close-ratio 4-speed Sturmey-Archer AM medium-ratio 3-speed Sturmey-Archer AG wide-ratio 3-speed w/dyno Sturmey-Archer AG wide-ratio 3-speed w/dyno Sturmey-Archer AR ultra-close-ratio 3-speed Sturmey-Archer ASC fixed close-ratio 3-speed Sturmey-Archer AT3 wide-ratio 3-speed Sturmey-Archer AW wide-ratio 3-speed Sturmey-Archer AWC wide-ratio 3-speed w/coaster brake Sturmey-Archer FB wide-ratio 4-speed w/brake Sturmey-Archer FC close-ratio 4-speed Sturmey-Archer FG wide-ratio 4-speed w/dyno Sturmey-Archer FM medium-ratio 4-speed Sturmey-Archer FM modified to 5-speed Sturmey-Archer FW wide-ratio 4-speed Sturmey-Archer K, KB, KBC, KT, KTC wide-ratio 3-speed Sturmey-Archer KS close-ratio 3-speed Sturmey-Archer KSW medium-ratio 3-speed Sturmey-Archer S3C wide-ratio 3-speed w/coaster Sturmey-Archer SBR wide-ratio 3-speed w/brake Sturmey-Archer S5 5-speed Sturmey-Archer Sprinter 5-speed Sturmey-Archer Sprinter 7-speed Sturmey-Archer SW super-wide-ratio 3-speed Sturmey-Archer T,TB,TBC,TBF,TBFC,TF wide-ratio 2-speed Sturmey-Archer TC close-ratio 2-speed Sturmey-Archer TCW wide-ratio 3-speed w/coaster

Gain Ratios	Gear Inches	Meters Development

Installation:

Planetary Gears Are Back!

Did You Ever Have A Three-Speed?

Do you remember how easily it shifted, even when you were stopped for a traffic light?

Do you remember how trouble-free it was?

Do you remember how the chain never fell off?

Do you remember how weather-proof the gear system was?

Do you remember how comfortable it was?

But...

You also probably remember the narrow range of gears, and the big jumps in between.

You probably remember the gap between gears, where your feet would spin freely, with no result.

You probably also remember how heavy your old "all steel" bicycle was,

and how badly the brakes worked in the rain...

The Good Without The Bad!

The NuVinci continuously-variable hub combines the best features of your old 3 speed, and eliminates the worst, thanks to modern materials and technology.

See also my article on Internal Gear Hubs.

New! On-line Gear Calculator for Internally-Geared Hubs

Custom Wheelbuilding Wheels hand-built by Harris Cyclery We build custom wheels, with care and attention to detail. Standard charges:

• $40 each for wheels with 36 or fewer spokes.
• $45 for 40 spoke wheels.
• $50 for 48 spoke wheels.
• $10 for cutting out and prepping a used hub.
• Butted spokes (DT or Wheelsmith) $1.00 each.

We will re-use your old hubs if you wish, but will not use used spokes nor rims.

If you bring in existing wheels to be rebuilt, add $10 per wheel for cutting the old spokes, cleaning and prepping your hub.

American/OPC	Bottom Brackets	Brakes Brifters Cables Calipers Levers D U Shoes			Brooks Saddles	Car Racks	Cassettes 7 8 9 10 Body
Chains 3/32" 1/8"	Chainwheels	Cranks Fx 11 13 117 137	Derailers Front Rear	Drivetrain Parts	English 3-speed	Fixed-Gear Headquarters Chain Cog Crank Hub Wheel
French Parts Brakes   Cranks  Info		Freewheels 1 5 6 6U 7 8	Groups & Kits	Handlebars	Handlebar Stems	Handlebar Tape/Grips	Headsets
Hubs and Hub Parts Brake   Fixed   Internal-Gear   MTB   Road   1-speed   Tandem				Lights	Pedals	Rims	Saddles & Seatposts
Shifters	Singlespeed Stuff	Stems	Three-Speed Parts	Tandem Parts	Tires, Tubes, etc.	Tools	Wheels

Aaron "Sonny" Harris	Jonathan "Jon" Harris	Sheldon "CaptBike" Brown
Tom "DumpBike" Deakins	Jay "International" Jackson	Elton "BigNegs45" Pope-Lance
Norman "Norm" Shackley	Tom "The Mighty" Quinn	Barbara "No Photo Yet" Wong

Back to the Harris Cyclery Home Page

Ordering Feedback? Questions?

Articles by Sheldon Brown and others
Harris Home	Beginners	Brakes	Commuting Lights	Cycle- Computers	Do-It- Yourself	Essays
Family Cycling	Fixed Gear Singlespeed	Frames	Gears & Drivetrain	Bicycle Humor	Bicycle Glossary	Bicycle Links
Old Bikes	Repair Tips	Tandems	Touring	What's New	Wheels	Sheldon Brown

Web site by Sheldon Brown

Sheldon Brown's Hotlists

If you would like to make a link or bookmark to this page, the URL is:
http://harriscyclery.com/nuvinci.html

Copyright © 2007, 2008 Harris Cyclery