Offbeat Bikes - Useful Links
Useful Websites

The Chopper Builder's Handbook - very, very useful website regardless of what type of bike you're building.
Rex's Speed Shop useful info on motorcycle electrical systems
Tube Notching Calculator - Allows you to print out a wrap around template to help with mitring tubes
Regulators / Rectifiers - A good discussion and guide for testing regulators / rectifiers can be found on the www.triumphrat.net forum. 
Reg / Rec Specifications - Many Japanese bikes use Shindengen reg / recs, their website gives an overview of the different types.
Bolt Science - The science of bolted joints. It's much more complex than most of us realise.
Mountz Torque - A very useful online tool for converting between different torque units.
Kojaycat - Supplier of vehicle wiring products. This link takes you direct to the page detailing how to make good crimped connections.
Useful  Youtube Videos

Seat Making

Two Stroke Tuning

Regulator / Rectifier Testing
This video is one of several made by Electrex World, a UK manufacturer of rectifiers and regulators. They are all worth watching, especially if you're having trouble with your charging system.

DIY Torque Wrench Calibration
https://www.youtube.com/watch?v=XaqBA-xSGbc

Making Crimped Connections

 Suspension Rebuilding