Robin Depending on your altitude, and density altitude of the day a tip speed of 680 ft per sec could be just below or above the speed of sound. Breaking the speed of sound with a prop is a no no if you want max life from the prop, best performance, and least amount of noise; all of the above are problems encountered when a prop breaks the speed of sound at the tip or progressing down the blade.
brokerpi...@bellsouth.net <mailto:brokerpi...@bellsouth.net> -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of Robin Macdonald Sent: Wednesday, August 16, 2006 6:42 PM To: KRnet Subject: KR> Props Netheads, For what it is worth, I have come across a site about props, one comment there was that the ideal prop speed is, a tip speed of 680 Ft/sec. This may help in the selection of the correct prop. Robin New Zealand r.macdon...@clear.net.nz _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html