At 07:48 AM 1/7/2006, you wrote: >I read another book which explained a similar set of facts where it >is fact that a chemical produces less in BTU's yet more power when >used as an auto fuel. Propane and Natural Gas are examples of this >as well as alcohol. >Colin Rainey ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
You are certainly more knowledgeable on the subject than I will ever be. According to the Mother Earth article, alcohol may have less energy but has a higher octane rating, thus the compression ratio can be bumped up as well as the timing advanced. This will increase the power output as well as improving the torque curve, or so the story goes. There are other positive factors for the use of alcohol also. The article was a good read. Several years ago, someone in the EAA built up three RV aircraft with engines and systems that allowed the use of pure alcohol fuel. I recall they were all three painted a bright yellow. Anyway, I recall they had to increase their fuel capacity to get the same range. Whatever the benefits there will be no alcohol for my KR with its epoxy / glass fuel tanks. Larry Flesner
