I am drawing my first bicycle frame,
When i draw the fork, its parts including crown and headset.
How do you know the detail size of those parts?
Should I need to buy all parts before I draw frame?
I will build frame by TIG.
Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder
Knowing the actual parts' dimensions is step #1 . Saying that it is very possibly to draw most all of the important frame aspects without the crown, bb shell, tube diameters, etc. After all it's really about the body's contact points first. But until the real parts' sizes are included the plans are only body specific.