CARBURETORS (1955 - 69 BMW TWINS)

  R50   R60 R69
L 1/24/45   1/24/95 1/26/9
R 1/24/46   1/24/96 1/26/10
         
  R50/2 R50S R60/2 R69S
L 1/24/45 1/26/71 1/24/125 1/26/69
R 1/24/46 1/26/72 1/24/126 1/26/70
         
  R50/2   R60/2 R69S
L 1/24/131   1/24/133 1/26/75
R 1/24/132   1/24/134 1/26/76
         
  R50US   R60US R69US
L 1/24/149   1/24/151 1/26/91
R 1/24/150   1/24/152 1/26/92

 

Final Drive Ratios (1955 - 69 BMW TWINS)

R50 R60 R69
SOLO 35/11 32/11 35/11
Side/Car 34/8 27/7 34/8
26/6 26/6
R50/2 R50S R60/2 R69S
SOLO 25/8 25/7 25/8 25/8
Side/Car 26/6 26/6 26/6
27/7
R50/US R60US R69US
SOLO 27/8 27/8 27/8
Side/Car ------- ------- -------

 

RATIOS

32/11 2.909
25/8 3.125
35/11 3.182
27/8 3.375
25/7 3.571
27/7 3.857
34/8 4.250
26/6 4.333

 

SKF Seals (1955 - 69 TWINS)

Engine

 Quantity Size  Description BMW P/N SKF P/N Seal Type Lip Materia
1 17x28x7 Early front crankshaft 11 14 0 002 196 564058 HMS5 Viton
6611 CRW1 Viton
 1 20x32x7 Late front crankshaft 11 14 0 002 197 564066 HMS5 Viton
  7911 CRS1 Viton
7910 CRW1 Nitrile
1 52x72x10 Rear crankshaft 11 11 0 001 122 692560 HMS5 Viton
  52x72x8 20441 CRW1 Viton
1 25x40x7 Early camshaft 11 14 0 002 199 692312 HMS5 Viton
692311 HMS5 Nitrile
1 25x35x7 Late camshaft 11 14 0 002 198 692304 HMS5 Viton
  692303 HMS5 Nitrile

Gearbox

 Quantity Size  Description BMW P/N SKF P/N Seal Type Lip Material
1 30x40x7 Input shaft 23 11 3 038 510 692348 HMS5 Viton
692347 HMS5 Nitrile
1 15x24x7 Shift lever 23 11 1 006 120 564038 HMS5 Viton
564036 HMS5 Nitrile
1 17x28x7 Kickstart shaft
23 51 1 006 132
564058 HMS5 Viton
6611 CRW1 Viton
1 36x54x7 Output shaft 23 11 1 006 178 14177 HMS47 Nitrile
Final Drive
 Quantity Size  Description BMW P/N SKF P/N Seal Type Lip Material
1 28x47x10 Pinion input shaft
33 12 3 038 256
563481 HMS5 Viton
563479 HMS5 Nitrile
1 30x42x7 Small outer seal
33 12 3 004 336
692352 HMS5 Viton
692351 HMS5 Nitrile
1 65x85x10 Large inner seal
33 12 3 004 342
692612 HMS5 Viton

 

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