----- Original Message ----- From: "John Gotschall" <johng...@comcast.net> To: "KRnet" <kr...@mylist.net> Sent: Monday, October 13, 2008 2:10 AM Subject: KR> engine dies after takeoff w/ram air
I read some posts about a few planes that went down after takeoff, immediately after adding ram air to an otherwise working setup. A few mentioned that they thought the fuel mixture leaned out sometime after reaching 100+ mph indicated. While working on my kr and thinking about these power loss problems, it occured to me that the pressure problem might happen to a float or non-float carb. Is it possible that the ram air pressure is sufficient to pressurize the carb to the point that the fuel gets pushed back into the tank (non-float) or air could push it's way through the main jet and into the float bowl (float type)? In the event the ram air actually pressurizes the carbureator wouldn't it then be necessary to have equalizing pressure applied to pretty much the entire fuel system? Suppose you pressure equalized the float bowl, only to learn that there is sufficient pressure in the bowl to keep new fuel from entering the bowl? jg _______________________________________ 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
