Daniel
Don't jump to conclusions that fast. As Ed pointed ou, you need to be able to climb very, very steep to experience a leaning effect to the carburetor strong enough that the engine will quit. You are basically stalling the plane then big time. I doubt that this happened. To really help you, you need to be more elaborate about what happened when. How steep did you climb for how long etc. What about the weather conditions? humidity, temperature etc? What fuel are you using? How many hours are on the engine? for how many years? As for now, I would rather point at a stuck valve that messes up the mixture , not so much the carburetor. But cleaning the carburetor might help in any case. How is the engine running otherwise? In idle, at around 1000rpm etc. With a C-90 engine ( I think you have a C-90) you should have a Marvel- Schebler carburetor. Does the leaning mechanism work correctly on that carb? maybe when you fly with a passenger , the passenger accidentally actuates the leaning mechanism and starves the engine. There are too many possibilities. We need more input from your side, otherwise you might be pointed into the wrong direction, and not be solving the problem at all. Hartmut To: [email protected] From: [email protected] 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 <[email protected]> To: Daniel Arditi <[email protected]>; [email protected] 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®: Get e-mail storage that grows with you. http://windowslive.com/RediscoverHotmail?ocid=TXT_TAGLM_WL_HM_Rediscover_Storage2_042009
