----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Actually, we were all flying C's and D's with C-85's and similar pitched props. All things being equal, my IA was (is) quite adamant regarding the difference. Roy > -----Original Message----- > From: Hartmut Beil [mailto:[EMAIL PROTECTED] > Sent: Tuesday, December 06, 2005 1:30 PM > To: Roy Stubbs; Ercoupe Tech > Subject: Re: [COUPERS-TECH] Metal VS. wood prop > > I head that wooden props can perform as well as metal props. Or at least > similar to. > The trick is that wooden props are suing a different pitch though. Might > have been that your fellow had a prop on his coupe that was a cruise prop. > How was his cruising performance and what type engine did he fly? > If he had a C-75 and you guys where using the O-200 conversion , that > would > be a bit unfair to compare... > > > Hartmut > ----- Original Message ----- > From: "Roy Stubbs" <[EMAIL PROTECTED]> > To: "Ercoupe Tech" <[email protected]> > Sent: Tuesday, December 06, 2005 7:24 PM > Subject: RE: [COUPERS-TECH] Metal VS. wood prop > > > ----[Please read http://ercoupers.com/disclaimer.htm before following any > advice in this forum.]---- > > > While there may be a weight savings I believe you will find a definite > performance loss. We had four Ercoupes flying regularly together in > formation and the one with the wooden prop could never keep up with the > rest on climb out. > > According to both my A&P/IA (WWII Navel Aviator and retired Lockheed > flight test engineer) and a second retired Navel Aviator and retired > Delta Captain, the wooden prop, while adhering to the same specs as a > metal prop, cannot be kept within the same manufacturing tolerances, > etc. As a result they do not perform as well as a similar metal prop. > So they said - and we saw it in actual practice. > > From this experience I would not recommend a wooden prop as a > replacement for a good metal prop. > > Roy 415-C N70UF > > > > > -----Original Message----- > > From: Kevin Gassert [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, December 06, 2005 1:02 PM > > To: Ercoupe Tech > > Subject: [COUPERS-TECH] Metal VS. wood prop > > > > ----[Please read http://ercoupers.com/disclaimer.htm before following > any > > advice in this forum.]---- > > > > > > > > Recently there was a discussion on how to lighten the Ercoupe empty > > weight. > > I don't remember anyone mentioning the weight savings going to a wood > > prop. > > Anyone have any thoughts on this? I think the wood prop would save 15 > to > > 20 > > pounds. > > > > Kevin > > > > > > > > > ======================================================================== > == > > ==== > > To leave this forum go to: http://ercoupers.com/lists.htm > > Search the archives on http://escribe.com/aviation/coupers-tech/ > > > > > > ======================================================================== == > == > == > To leave this forum go to: http://ercoupers.com/lists.htm > Search the archives on http://escribe.com/aviation/coupers-tech/ > > ============================================================================== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
