Thank you very much Bill, good drawing, the point is that we have a C90 in the Erco, and the data sheet you sent is up to the A80 model (al least is what I see).
About my drawing, I dont know which is the "Normal" (safe or maximum) climb attitude of the Coupes (perhaps someone can tell us), I draw it that way to emphasize that there is a "limit" in the angle when the tank output and carburator intake are at a same level. In our case, the attitude was very steep, perhaps a bit more. Regards Daniel ________________________________ From: Bill BIGGS <[email protected]> To: [email protected]; [email protected] Sent: Tuesday, April 21, 2009 1:27:30 AM Subject: RE: [ercoupe-tech] RPM Drop during Climb Out Daniel, Attached are the dimensions of an a series continental engine. It is extreemly close to the C series Might help you It is a big file so you could read dimensions. will take a while to load By the way, your diagram shows a 33 degree nose-up. Is this a "normal' extreme climb attitude? Bill ________________________________ To: ercoupe-tech@ yahoogroups. com From: daniel_arditi@ yahoo.com Date: Mon, 20 Apr 2009 18:17:55 -0700 Subject: Re: [ercoupe-tech] RPM Drop during Climb Out Ed: Fuel flow: Now clear enough to me. You wrote: "Only if your plane is very light, flying solo, and the weather is cold so the engine is extra powerful, is it possible to get the nose so high that fuel does not flow properly to the engine.. Not all Ercoupes can get the nose this high. As soon as the nose is lowered, power returns." This is exactly what I was waiting to hear !!!!!!!! It is hard to believe that this could happen, but we think that this could be the reason why the power went down soon after take off, when in a steep angle of climb (that was the case). It is the first time I hear this, and I insist, it is hard to believe to me that this could happen to a plane, but of course, physically possible. So, now talking about this issue, I attach a drawing I made, so if any of you can tell me the distance showed in the graphic (I called "d"). My friend's Erco Engine is a C90 and carburetor has been changed, so, perhaps is something wrong with that distance. Best regards, and thank you very much again for all of your help !!! Daniel Arditi Buenos Aires, Argentina ________________________________ From: Ed Burkhead <e...@edburkhead. com> To: Daniel Arditi <daniel_arditi@ yahoo.com>; ercoupe-tech@ yahoogroups. com Sent: Monday, April 20, 2009 6:46:54 PM Subject: RE: [ercoupe-tech] RPM Drop during Climb Out Daniel Arditi wrote: Although this explanation sounds very interesting to me, I still have some doubts: 1.- I don't understand clearly the reason why the fail occurred with 2 people and not with one. Is it that with more weight to lift you need more power and that extra power (with two people inside) has exceeded the limit the fuel flow with the .030 could provide? Daniel, The number of people and full gross weight should not have anything to do with loss of power. It is normal to take off and climb at full power – always. The fuel flow with the limiter is still many times what the engine can use (maybe 5 times as much fuel as the engine can use). 2.- Has the take of angle of climb anything to do with this problem ? Only if your plane is very light, flying solo, and the weather is cold so the engine is extra powerful, is it possible to get the nose so high that fuel does not flow properly to the engine. Not all Ercoupes can get the nose this high. As soon as the nose is lowered, power returns. Ed ________________________________ Rediscover Hotmail®: Now available on your iPhone or BlackBerry Check it out.
