> The B.O.S Library   > Odd mechanics and weird stuff
B.O.S Data charts
- HD 1940's racing models production numbers
- WLDR Cylinders identification chart
- WR heads identification charts
- WLDR heads identification charts

 Factory documents
- 1937 WLDR model specifications and instructions
- 1937 Shop Dope "Special" racing bulletin for WLDR
- 1940 WLDR model specifications and instructions
- 1941 WR Factory presentation brochure
- 1941 WR flat tappet blue prints
- 1941 Competition models parts & price list
- 1948 WR model specifications and instructions
- 1948 Dealer announcement of 1949 WR models
- 1949 HD Factory suggestions for Daytona Races
- 1950 WR model specifications and instructions
- Harley-Davidson hillclimb gear ratios table

Tech articles
- Cycle World 1965 - Jerry Branch interview on KRs
- Cylinder head tech
  Freak motors
- Harley-Davidson "freak" motors gallery
- Indian Motorcycles "freak" motors gallery
- Drake watercooled knuckle midget car motor

Wacky parts and stuff
- Bashed up, used and abused parts 
- B&H Footshifter catalog & instructions
- WR Daytona Windshield by Jack Tracey


> Motor top end data & pics > Motor bottom end data & pics > Chassis & transmission
Carbs-Linkert, manifold & air filter
Cylinders, heads & pistons
Valves, valve springs & guides]
 Cases & cam covers
Cams, tappets & guides
 Flywheels, rods, shafts & crankpin
Magnetos [Wico, Fairbanks-Morse, Edison-Splitdorf]

WLDR "Daytona" tanks 1937-1940
 WR "Daytona" tanks 1941-1946
WR "Daytona" tanks 1949-1950
 WLDR "Daytona" oil tank 1937-1940
 WR "Daytona" oil tank 1941-1952
WR flat track narrow tanks
WR Narrow clutch
WR Chrome Moly frame
WR TT type seat
WR Dirt track type seat
WR chin pad
WR pillion pad