Cirrus SR20 G2. 145 KTAS at 10,500 ft on 9.0 GPH and 17.5 NMPG. Not bad at all. I didn’t miss the cruise differential that much but I do miss the climb difference when compared to my previous M35 with an IO-550 Bonanza.

I raise you my RV6, 149ktas at 6.5ish GPH if I had fuel injection I could run more lean.

Still the SR20 has impressive economy for a 4 seater.

And you do it inverted

Raise you a Lancair IV, 275kts on 15.5 gph

My Cardinal RG turns almost identical numbers to an early SR20. 145kts at 9.5gph. Cabin almost as big as the Cirrus, similar useful loads. Easier to get in and out, no parachute repack, and 1/3 the cost.

Not saying the Cardinal is "better" than the Cirrus. They are different animals. Just that Cessna, Piper, and Beech back in the 70's weren't so dumb. I may not be able to afford a Cirrus but I can afford Cirrus like performance.

JOOC, I wonder what the fuel burn would be in a 260 or 285 HP Bonanza flown LOP at the highest altitude that would yield 145KTAS.

This thread is just baiting the Mooney owners. And maybe a DA42-VI owner if we have any in the house.

Is it too much to ponder an Sr22TN?
Light, fast, high.

Interesting power setting. I assume WOT and 2630 rpm. I guess when you’re WOT in a Cirrus the prop governor goes to near max? Engine is designed for that speed, but that’s screaming. any way to pull back on the rpm? It’s a single power lever, right?

Interesting question, since I routinely get 160+ knots LOP at 11.5 GPH. I could try what you mention, but my wife looks at our speed and, if it's too slow, throws the flag!

Not truly WOT. As you mentioned, there is a single power lever. There was a very slight reduction in MP (0.1") to get the RPM below 2,700. You can set about any RPM you want. I set this at 2,600 RPM but looked down a bit later and saw it read 2,630. Not enough to correct it.

This is an SR20 so only 200 HP. At 10,500 ft I chose 2,600 RPM to week out a bit more power. This was also 10-20º LOP.

All airplanes are compromises. The SR20 has compromises that fit my current needs. Certainly, an SR22TN will fit the needs of others. Tarver's Lancair meets the needs of some people, just not me. The same for the other airplanes mentioned in this thread. Except for the experimental market, there aren't a lot of fixed-gear airplanes that do as well as what I have documented.

I simply mentioned the relative efficiency of the SR20 as it surprised me a bit. A 200 HP, fixed gear, 49" wide cabin with two doors, runs LOP at 10,500 ft at 9 GPH while providing a respectable 145 KTAS with modern avionics. That's pretty efficient.

Sorry, mistype..

I meant to ponder if an SR20TN is crazy talk from a product perspective.

Sorry, mistype..

I meant to ponder if an SR20TN is crazy talk from a product perspective.

If the SR20 power lever behaves like the SR22 one, you can get to WOT before the prop governor goes to max RPM. I don't recall what the lowest RPM you can get with WOT is but I think it's either 2300 or 2400.