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  1. JBlack

    Best compression ratio for propane?

    VintageAP- "Am I still looking for the same aproimate A/F ratio - 14.7?" I believe that the stoichometric A/F ratio for propane is ~15.3
  2. JBlack

    Automatic manhole/storm drain cover removal

    I am looking for a way to remove manhole covers and storm drain covers automatically either with a truck attachment or a portable machine. Does anyone know if this animal already exists? If so, any information about it would be helpful.

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