Flywheels
Technical paper and information on exotic bearings for flywheels.
http://www.virginia.edu/romac/flywheels.htm

FAQ: Kinetic Energy Storage
ASPES Engineering AG, FAQ kinetic energy storage
http://www.aspes.ch/faq.html

Farndon
farndon engineering coventry manufacturer of high performance flywheels, crankshafts and con rods for the most demanding automotive applications
http://www.farndon.com

Centerforce
centerforce performance clutches military
http://www.centerforce.com/

Alloy Race Components
overview
http://www.alloyrace.com/

California Distributed Energy Resource Guide
Energy storage technologies produce no net energy but can provide electric power over short periods of time.
http://www.energy.ca.gov/distgen/equipment/energy_storage/energy_storage.html

Clutch Masters
Manufactures high performance clutches, clutch packages, aluminum flywheels and clutch tooling.
http://www.clutchmasters.com/

Regenerative Power and Motion
White papers discussing several concepts for innovative and renewable energy, including on-site solar/wind powered buildings, flywheels, and electric highways for high-performance EVs.
http://www.geocities.com/dfradella/

Graph
Shows system power ratings versus discharge time at rated power for several technologies. Includes several batteries, flywheels, Compressed Air Energy Storage, and pumped hydroelectric.
http://www.electricitystorage.org/pix/photo_ESAratings.gif

RJ West
Complete line of tools and accessories for all machining needs for the accurate resurfacing of automotive and light truck rotors, drums, and flywheels. Other Products Include: Punches, dies, and molds for vacuum forming of plastic lids and containers and precision small parts for the aerospace, automotive, and plastic container industries.
http://www.rjwest.ca/accessories/