Sonoma Flight Center Posted May 14, 2013 Report Share Posted May 14, 2013 Attached is a letter from California Power System Rotax training center in S.California. This letter was written by Kevin Kane as an outline of the 912is features for attendees. Kevin is a wealth of information on Rotax engines and he is one of the instructors. Kevin told me that approx. 80% of the 912IS engine has been redesigned, he has updated this from the 60% he quotes in the letter. I asked him recently why the new engine takes a lot more strength to turn the propeller compared ULS engine. He said the generator has super strong permanent magnets called rare earth magnets. Here's a Wikipedia explanation; Rare-earth magnets are strong permanent magnets made from alloys of rare earth elements. Developed in the 1970s and 80s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets. The magnetic field typically produced by rare-earth magnets can be in excess of 1.4 teslas, whereas ferrite or ceramic magnets typically exhibit fields of 0.5 to 1 tesla. Anyway the CPS 912is install letter is an interesting read that I wanted to share with the group. Thanks to Kevin Kane. Note; Kevin will be attending the Arlington Washington Fly-in July 11-13th. I will be there too with a 2012 CTLS. Happy flying! Ron CPSAttends912iSTraining.pdf Link to comment Share on other sites More sharing options...
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