Cruise Settings 4/3/2015 4/5/2015

[jkhirsch]

For reference I am posting my cruise settings and the results on the Garmin E6B:

 

[MB65E]

Glad you are flying again!!

-Matt

[bonal]

First off, happy that you got things sorted out and are back in the air. Looks like your making a balls to the wall run. Well over 25 squared for some big speed or is that your normal cruise. I bet you had a big smile at that moment.

[jkhirsch]

I made this comment on another thread, I only run my plane one way: http://www.mooneypilots.com/mapalog/M20F%20Evaluation/M20F_Evaluation_Report.html

 

I do whatever I can to mitigate cylinder temps since I have no "real" engine management device.

[Tommy]

Surprised that you didn't put one in when you are fixing the rest of the plane?

Couldn't recommend it enough!

[bonal]

Perhaps it took all he had to get the plane back in the air and another 3 to 5 AMU's were not available.  sometimes modern Mooney guys forget there are those without as much to spend. I am not him but I know if I had to do all that there would be little left in the coffers.  Good on ya mate for getting back in the air.

[jkhirsch]

I can't find any reason to spend money to install anything but a 930, which is going to cost a pretty penny which I don't have today.

 

The 930 will also lead to a change in layout of at least part of the panel, which will cost even more money.

[Shadrach]

I made this comment on another thread, I only run my plane one way: http://www.mooneypilots.com/mapalog/M20F%20Evaluation/M20F_Evaluation_Report.html

 

I do whatever I can to mitigate cylinder temps since I have no "real" engine management device.

 

 

So do you climb out at 100df ROP per Kromer's recommendations? I wonder if he would stick to that recommendation today.  I'm pretty sure that in the spring and summer time I'd be well over 400df climbing out at that setting. 

[jkhirsch]

I'll requote myself here on climb out.

I do whatever I can to mitigate cylinder temps since I have no "real" engine management device.

Without the proper tools to know what's really going on, I only minimally lean on climb, mostly paying attention to the cylinder temps.

I realize that the analog EGT is there and is "accurate" and generally my #2 is hottest, but I don't spend any time looking for peak.

I have found the peak temp before and it's not vastly different from time to time when I "tracked it", I just stay away from it.

One day I hope to operate my plane with more data/knowledge, but I'm fairly convinced of running full throttle and 2500rpm and "max climb"

I have actually operated lean of peak with full throttle and 2500rpm, I've even gone way lean and no real trouble observed.

I just refuse to do things that way regularly without the proper data.

I'm sure that I burn up a lot of extra fuel, but I try not to think about it.

[Shadrach]

I'm flying the same AC with a JPI. My experience with this and other F Models is that #3 CHT is usually the hottest. I think the factory thought so as well because I believe that #3 is the cylinder that is typically instrumented to the factory single probe EGT/CHT.

I understand the concern about not having the Data. However, when you think about it, not having the data is just as risky on either side of peak. We managed for decades without it, but I'd feel weird not "flying my engine" today.

[carl]

What are you calling those setting; rpm 26 , MP 27 ?  or would you say 27 squared?

 

Isnt MP supposed to be less than rpm? 

 

I use 25 square and then cruise at 25 rpm and pull the MP back to match up the setting in the manual for desired fuel burn. I lean for 50degres rich of peak.

 

I have never opened my ram air yet.

[Shadrach]

Carl,

We should fly together sometime. The MP under RPM is an old wives tail that refuses to die. There is no reason to close the throttle any time after take off other than to slow down or go down.

[carl]

"The MP under RPM is an old wives tail that refuses to die." 

 

Oh good. I hope that is an old wifes tailabout turning of the boost pump , cause I forgot to do that today. 

 

Sometime I will come to Hagertown .

 

carl 

[Shadrach]

"The MP under RPM is an old wives tail that refuses to die." 

 

Oh good. I hope that is an old wifes tailabout turning of the boost pump , cause I forgot to do that today. 

 

Sometime I will come to Hagertown .

 

carl 

 

Many will disagree with me, but I pretty much use the boost pump almost exclusively for priming