Mark L, I just read your page on your crankshaft odyssey. Are you, and any others using Corvair engines, still satisfied that a new billet crankshaft with good fillet radii (along with the 5th bearing and prop indexing) will eliminate the issue of broken crankshafts in Corvair aviation engines?
This also got me thinking about a YouTube video about engine efficiency that I watched a few days ago. Last September, Larry F, started a thread that included the topic of ethanol. I added some info about the benefits of ethanol and included links for those interested in the science. On other lists I hear a common misconception that ethanol is "hydroscopic." That is not a word and they usually mean hygroscopic. However, that is not factual, either. Ethanol is hydrophilic. Anywho, a few days ago I watched an interesting video on the topic as it applies to engines that many of you may enjoy. Here it is: https://www.youtube.com/watch?v=6_DQPLihXfo
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