When I put mine together, I started with the chassis. Mine was a bunch of parts somebody else had disassembled, so I did not have any memory of what went where, but the frame had been powdercoated and was ready to go.
Rebuilt the front forks, put on the bike, along with triple clamps and handlebar
Rebuilt the swingarm, put that and cradle on the bike. PO included a trianguler brace (from CNW, I believe) that fit where the crankcases and front iso would go
installed the horn and battery box
Rebuilt the wheels and rear brake, put on the bike, along with fenders
Rebuilt front brake, put on bike
Installed new wiring harness
Rebuilt transmission, put on bike
Rebuilt lower end, put on bike
Rebuilt top end, put on bike
Rebuilt carbs, put on bike
Assembled clutch and primary
Painted and installed tank and sidecovers
Filled with fluids and started it up.
Took six months from start to start-up, and six months to sort out (some oil leaks were real buggers to solve)
Three things helped the process:
Shop manual and parts book came with the bike
This site
My local Norton guru, Wes Scott, who is a 20 minute ride away for parts and questions. He also normally has three or four Commandos in the shop, which made it real easy to see how things fit together.
Got the bike with 3741.2 miles on the clock - now has 11599.3, probably another 110 tonight (Bike night in Kendall) :wink: