----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
I find that with one person on board, Full fuel, controles full back, I am getting exactly what Ed Burkhead describes! About 40 mph holding altitude at 1850rpm, nose very high.Only held it that way for five minutes but noticed no increase in oil temp. OAT was around 0 deg C. I think if the temp was hot then I would get much different results.Sooo... I guess I'm saying that if you are flying in winter, then engine overheating should not be a problem no matter how slow you cruise! Summer will likely be a much different story! Darwin Hartmut wrote: > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > So how then can you safe on fuel in a slower flight ? > When you burn less fuel, engine generates less heat. > > We are talking RPM settings fom around 1900 low and 2500 high.(depending on engine - prop combo) > > When you get behind the power curve (45 MPH) I can see the adverse effect described. > > Hartmut > > MAGIC VAC wrote: > > > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > > > I have to agree with this assessment Hartmut. In slow flight, your engine > > will be working harder just to maintain altitude. Once you drop a few > > hundred rpm, you have to increase the throttle just to maintain that lower > > rpm setting. Kinda like walking on a treadmill. Increase the climb angle, > > and you work harder, but you're still just maintaining the same altitude. > > > > Larry > > > > ----- Original Message ----- > > From: "Gordon Tanner" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]>; <[email protected]> > > Sent: Wednesday, December 04, 2002 4:13 PM > > Subject: Re: [COUPERS-FLYIN] Slowest Cruise Speeds > > > > > ----[Please read http://ercoupers.com/disclaimer.htm before following any > > advice in this forum.]---- > > > > > > > > > One aspect of prolonged slow flight is insufficient engine cooling due to > > > the extreme nose high attitude. Aircraft with cowling flaps are generally > > > OK if the cowl flaps are open during this type of operation. Without > > extra > > > cooling capacity, the back cylinders will slowly cook. It can result in > > > excess carbon in the cylinders, due to the lack of cooling & slow RPM. One > > > of the first indications is excess "varnish" on the inside of the valve > > > covers. > > > > > > If you would like to join your friends, I have a nice Challenger II here > > in > > > northern California.....that is for sale, or trade for a coupe. > > > > > > Gordon Tanner [EMAIL PROTECTED] > > > > > > > > ========================================================================== == > > == > > > To leave this forum go to: http://ercoupers.com/lists.htm > > > > > > > ========================================================================== ==== > > To leave this forum go to: http://ercoupers.com/lists.htm > > ========================================================================== ==== > To leave this forum go to: http://ercoupers.com/lists.htm ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm
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