One other explanation is that the carburetor, especially the Stromberg is leaning itself a little during the exessive nose up attitude. This is ok in an slightly rich running envirenment, but if you are running already lean, leaner means the engine looses power. The moment the engine looses power, the stall occures and you are in a dive. The thread here should be named therefore "Power Loss, then Dive" This is a known feature of the small Continentals. Continental recommends applying Carb-Heat in these conditions. Carb heat enrichens the mixture so the engine won't loose its efficency, but overall efficiency is then down as well, not allowing an exessive nose up attitude. A win win situation :-) Next time you fly try the same thing with Carb heat on. See if the plane looses power then. Hartmut
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]: [EMAIL PROTECTED]: Wed, 8 Oct 2008 17:06:57 -0500Subject: RE: [ercoupe-tech] Power Loss in Dive Bill asked:> Yesterday I did a power on stall and then let the nose drop into a> brief dive. When I did this the engine lost power with a drop in rpm to> 1500, then it came back up quickly. Is it possible to stop fuel flow to> the carb by pulling zero g's? Is there any other possible explanation?> Runs OK otherwise.Bill,I'd guess zero-g could be a possible cause of the power loss. It is agravity fed fuel system, after all.In addition, we've seen a few instances in which the extreme nose upattitude of a full power stall caused short term power loss. I'm guessingthat this is because there's insufficient gravity "head" pressure. As thenose and carb get higher and higher relative to the nose tank, the fuelpressure gets lower and lower - all at a time when you are at a high powersetting.As long as you are not just above the ground, trying to clear the trees,it's just a pucker-inducing "interesting" event.May you live in (not too) interesting times!EdEd Burkheadhttp://edburkhead.com/Ercoupe/index.htm East Peoria, Illinoised -at- edbur???khead.??com (remove the ? marks and change -at-to @) _________________________________________________________________ Stay up to date on your PC, the Web, and your mobile phone with Windows Live. http://clk.atdmt.com/MRT/go/msnnkwxp1020093185mrt/direct/01/
