Electric bikes, bicycles and pedelecs

<table>
<tr><th>Latest:</th><td> <a href="/latest_bicycles">Bicycles</a></td></tr>

<tr><th>Handbooks:</th><td> <a href="/book-page/v-voltage-forums-community-hand-books/1110-e-bike-collaborative-hand-books">Electric Bicycles</a></td></tr>

<tr><th>Vendors:</th><td> <a href="/vendorlist/1024">Electric Bicycle Customization or Repair</a>, <a href="/vendorlist/1018">Electric Bicycle Dealer</a>, <a href="/vendorlist/1034">Electric Bicycle Distributor or Manufacturer</a>, <a href="/vendorlist/1023">Electric Bicycle Parts or Kits</a></td></tr>
</table>

Emergency cut off switch---Yes or No

Lately I have been running across references to an "emergency-cut-off-switch for e-bikes. They are mounted for easy & quick access by the rider in the event of a controller or throttle gone-WILD and interrupt the primary wire to the battery as shown in the drawing. One would have to use a 40 amp or so switch or possibly a fuse you could grab in a hurry. With Toyota's Prius in mind it might not be a bad Idea! I think I might do it.

I know we have e-brakes but what if that circuit fails along with your throttle because the controller fails?

Mystery connectors---do YOU know the name of these or where to purchase them?

Does anyone know the name of these very common connectors---they are even used on e-bikes. I need the name of them and sources please---I cannot find them w/ googling all day. I know of one source for some of the sizes & that is http://www.electricscooterparts.com

CNX-53 Connector.jpg

Thanks!

CYCLONE 3pc crankset--tooth count

Hello all---I am a newbie here!

I am soon to purchase the Cyclone 650 watt 24 V 3pc crank-set for installation on my adult trike. I need to know the tooth-count of each of the 3 chain-rings please. I have checked their website and believe it is in error. I have emailed them but no response to date. I would really appreciate it if someone would post that information here.

Thanks!

power cut out problem

Hello I'm new here so big HI to everyone :) .
I have a power problem with my kit.
spec:
480w 48v brushless hub motor
48v lipo 10ah pack

when i apply even slight load on my bike the power cuts out and battery voltage reads around 2-3 volts. to get power back i need to disconnect the controller and connect again.

Ive changed the bms and changed the controller but the problem remains, downhill I can almost hit full throttle but on flat surface i get cut out after 1/3 of throttle and on hills even on less.

reikiman's picture

Fallbrook Technologies Inc. Unveils NuVinci® 360 Bicycle Drivetrain

(Taipei, Taiwan; March 17, 2010) – Fallbrook Technologies Inc. (Fallbrook), a technology company dedicated to improving the performance and flexibility of transmissions for engine- and human-powered devices, today announced and displayed its new NuVinci 360 CVP bicycle drivetrain (N360) at the Taipei Cycle show in Taipei, Taiwan.

The N360 represents a major update and enhancement of the NuVinci bicycle drivetrain. As with previous NuVinci hubs, the N360 uses spheres instead of gears to transfer torque, but the number of spheres has been reduced from eight to six.

The N360 is 30% lighter, weighing just 2,450 grams (5.4 lbs), and has a 17% smaller overall diameter than previous NuVinci models. Shift effort is significantly reduced, even under high pedal forces. Nominal ratio range is 360%.

The N360 also provides an enhanced shifting interface. There is a more direct feel for the rider, with 50% less shift grip rotation required between the lowest and highest ratios. Because shift effort under pedal torque is also less, riders can shift easily at any time, in practically any condition. The sleek, newly-designed shifter and shifter display now includes the icon of a rider on its unique “inchworm” indicator. Additionally, the new hub interface is inside rather than outside the frame dropout, reducing the likelihood of damage in the event of a fall.

The company believes these changes dramatically widen the range of bike models that can potentially use a NuVinci drivetrain. These model types include Trekking, Mountain, Sportive and Flat Bar Road bikes, as well as Urban, Commuter, Folding, Hybrid, Cruiser and eBikes. Several bike manufacturers, including Batavus, Derby / Raleigh, Ellsworth, and Simpel are among the first to have chosen the N360 for their new mid-year and 2011 models.

“With its smaller size and improved shifting, the N360 opens the door wider for manufacturers everywhere to make NuVinci technology part of their business strategy,” said Alan M. Nordin, president of Fallbrook’s Bicycle Products Division. “At a time when more people are using or considering bikes as basic transportation because of environmental and economic concerns, the N360 offers a great opportunity to meet the growing needs of the market.”

Fallbrook expects volume production of the NuVinci 360 to begin in Q2 2010.

NuVinci technology is a practical, economical and universally adaptable continuously variable transmission for human- and motor-powered vehicles and machines.

The NuVinci CVP uses a set of rotating and tilting balls positioned between the input and output components of a transmission. Tilting the balls changes their contact diameters and varies the speed ratio. The NuVinci CVP can be used in a wide variety of transmission-based vehicles or devices.

About Fallbrook Technologies Inc.
Fallbrook Technologies Inc. (Fallbrook), headquartered in San Diego, California, is a technology company dedicated to improving the performance and flexibility of transmissions for vehicles and equipment. Fallbrook’s revolutionary NuVinci® continuously variable planetary (CVP) technology is applicable to virtually any machines that use a transmission such as bicycles, light electric vehicles, automobiles, agricultural equipment, and wind turbines, among others. NuVinci technology offers companies the flexibility to design and produce next-generation products that are better tailored to their unique business, market and competitive requirements.

Fallbrook has built an extensive portfolio of over 350 patents and patent applications worldwide. Fallbrook intends to continue its research and development activities in order to continue to enhance the performance and capabilities of NuVinci technology.

To download a comprehensive press kit and company/technology backgrounder, click on the link below.

bike keeps cutting out

Just got a 500w front wheel kit & a 36v 20Ah LifePo4 battery. Fitted the wheel no problems. When the battery arrived (I got it from Ping) it was fully charged.

The 8 miles to work was great fun. I put the battery on to charge during work, even though the charger seemed to indicate that the battery was fully charged.

On the way home the bike cut out half way. It cut in & out intermittently all the way home. It cut out when the load was 'too' high. It hadn't done that on the way to work.

reikiman's picture

Hydrogen for electric bicycles?

This article describes a couple strange developments:-

Lithium or hydrogen bike? Choose your steed
http://news.cnet.com/8301-17938_105-10467341-1.html?part=rss&tag=feed&subj=GreenTech

BLDC MOTOR RUN IN FORWARD AND REVERSE DIRECTION BOTH

I WANT THE EBIKE ,S MOTOR IN FORWARD AND REVERSE DIRECTION BY USING A SWITCH , PLEASE SUGGEST HOW WE CAN DO IT.PLEASE HELP.

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