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List. I am on this one with Larry. The Header Tank can not develop a vacuum when briefly brought to whatever angle of attack. The fuel pump feeds from below, the amount of gas consumed by carb is not enough to even be considerable. Remember folks we are talking a few seconds in stall attitude. I can turn off completely the header with its valve and can still run the engine for at least 10 seconds. With the valve open it will take a lot of gas to be drained to develop a vacuum in that tank; remember , the tank is half filled with air - a very soft & expandable stuff. I rather think that in the described failure on high attack angle something in the carburetor got clogged or stuck, which either closed the fuel feed to the carb or changed the fuel level in a manner that the mixture became either too rich or lean.. I experienced the same thing in a my carbureted 1964 Buick Skylark , which just died on a steep hill (which we have a lot here in San Francisco). I did not find the opportunity to fix that problem and I no longer have that car... Hartmut N3330H, San Francisco jollyd wrote: > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > > > beleiev me...IT DOES!...it will stop up the fuel system faster than > cement! > > Larry Wilkins wrote: > >> ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- >> >> >> >> It would be difficult for this to be the case, as you're constantly >> getting more fuel or air from the wing tanks. I don't think the >> header tank could ever develop a vacuum. Larry >> >> ----- Original Message ----- >> From:Jim Duffy >> To: Darwin Girdauckis ; Wayne Woollard >> Cc: Coupe-List (E-mail) ; Coupe-Tech (E-mail) >> Sent: Friday, May 17, 2002 10:14 PM >> Subject: Re: [COUPERS-TECH] Re: [COUPERS-FLYIN] Ercoupe >> crash info...long >> >> ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- >> >> >> >> Years ago I too had the engine almost quit with a high >> angle of a attack. At the time I had the type of cap on >> the header that had the wire protrude thru the top of the >> cap. I noticed when I got in this position I got some fuel >> out of the cap at the time it was sputtering I lowered the >> nose and everything back to normal. I tried this several >> times with same results. I changed to the cap with the >> plastic tube with the sight gauge in it and no more >> problems. I can only guess that the cork or and fuel was >> blocking the vent and stopped the fuel flow. Jim N87349 >> >> ----- Original Message ----- >> From:Darwin Girdauckis >> To: Wayne Woollard >> Cc: Coupe-List (E-mail) ; Coupe-Tech (E-mail) >> Sent: Friday, May 17, 2002 9:28 PM >> Subject: [COUPERS-TECH] Re: [COUPERS-FLYIN] >> Ercoupe crash info...long >> >> ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- >> >> >> >> >> >> >> >> >> >> Wayne Woollard wrote: >> >> > >> > >> > Last year after flying Ercoupes for 13 years, I >> > too experienced the fuel starvation problem at >> > high >> > angle of attack. I spent a month with a >> > mechanic in an attempt to duplicate the problem >> > at will in >> > order to know exactly how to rectify the >> > problem. If there is any interest in this >> > anomaly, I will be >> > more than happy to discuss it. Just let me >> > know. It is rather long also. >> >> Wayne! Please share with us what you found! >> Darwin in Alberta >> >> > >> >> ================================================================== >> TO UNSUBSCRIBE go to: http://ercoupers.com/lists.htm >> >> >> >> >> ====================== >> TO UNSUBSCRIBE go to: http://ercoupers.com/lists.htm >> >> >> >> >> ================================================================== >> TO UNSUBSCRIBE go to: http://ercoupers.com/lists.htm >> >> >> >> > ================================================================== > TO UNSUBSCRIBE go to: http://ercoupers.com/lists.htm > > > > ================================================================== TO UNSUBSCRIBE go to: http://ercoupers.com/lists.htm
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