At 19.34 2011.12.31, you wrote: >By mass ~ 10-15 / 1. > >Stoichiometric is approx 13:1 Thanks, it's like inside an engine then (although some engines can burn a l= eaner mix). This means that if I feel gasoline smell in the environment air, it cannot = ignite anyway.. as it's too lean. Right? :P --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .