Like with like ? !!
 

So far all we have is a lot of "mine is bigger than yours" in terms of numbers for the fuel burn of the PA-28.

Not one of you has stated the power setting used and with out this all the numbers are useless.
The fuel burn will stay constant with increase in altitude (but the TAS will increase) so flying high will save money and the rough altitude vs distance on this class of aircraft is 5000ft for a trip distance of 100NM with the best alittude to be for range being between 6-8000 FT.

A NON INJECTED O-360 Lycoming should be using about 36LT/HR at 60% power and 40 LT/HR at 75% power. You will have to read the POH for the RPM vs Altitude for your aircraft to get the RPM settings (these nunbers include taxi and climb and should work with a 2 hour leg).

Please remember anyone who tells you that XXXX is cruse RPM without quoting a presure altitude on a fixed pitch prop is talking rubish.

Most of the posts above show how few people have an understanding of the POH for the aircraft that they fly.

A and C

Get 100 PA28 archer owners in a group. Ask them the average fuel burn of their aircraft. I bet at least 80 of them say 40ltr and hour.

Which incidentaly 2 of us which again incidentaly specificaly talk about archers said 40ltr an hour. All the other posts are tangents including mine.

Now had the original question been "What is the fuel burn of an archer at 62.3% power setting at 5324ft" then your opinion would actualy be about right.

But I do agree the POH is the oracle as far as figures ar concerned, due to the fact that as demonstrated us pilots all have different opinions/views/ideas/answers.

I operated an AA5B (same engine) and in real world operations, running consistently at 75% (altitude and temp corrected) she burned 40lph. This was with leaning the mixture for the cruse. Remember this is an overall figure, not the amount burned in the cruse.

If this is too much you could always get a more efficient aircraft…

Rod1

Yep I run an AA5-B as well, and she burns on "average" 40ltr and hour. And cruises significantly faster than the archer.

Remember the POH mentions US gallons (not liters), so 10 USG/hr is a good ballpark figure, and one that I use whenever I fly an Archer (in good nick). Seems to work well when comparing fuel burn on the PLOG with fuel remaining at the end of the trip (the fuel gauges in the PA28 series being a bit approximative). Basically, with the full 48 USG, you can expect an endurance of 4 hours/40 USG (plus 5% contingency fuel and at least 30 minutes' fuel for diversion purposes).

Of course, leaning the mixture helps, provided you fly above 3000'-3500' or so - not something we get to do very often in this country!

Wheel fairings are supposed to provide a slight perf enhancement (in terms of fuel burn/airspeed) by reducing drag. But they also mean more maintenance if operating out of a grass airfield.

Cheers :cool: