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Old 06-19-20, 07:39 AM
  #22774  
gster
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Bikes: 1971 Hercules, 1978 Raleigh Superbe, 1978 Raleigh Tourist, 1964 Glider 3 Speed, 1967 Raleigh Sprite 5 Speed, 1968 Hercules AMF 3 Speed, 1972 Raleigh Superbe, 1976 Raleigh Superbe, 1957 Flying Pigeon, 1967 Dunelt 3 Speed

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NASA has several test papers on sun gear failures due to poor lubrication.
https://ntrs.nasa.gov/archive/nasa/c...9920021153.pdf
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