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05 Jul 2025, 10:24 [ UTC - 5; DST ]


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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 12:35 
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My family and I spent hours going through a pre delivery VJ at Osh that they had out back away from the masses w their rep and all I got afterwards were crickets.
Oh well, apparently they don’t need to chase customers.


This is how car dealers have been as well, with 5-6% financing and supply chain issues resolved, this will change rapidly


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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 13:22 
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First off....I barely afford my old stretch debbie.... I'm not looking at jets.... :sad:

I didn't know the guys in the video... I thought maybe they were Epic salesman to bash the CJ so badly.

Since when did performance matter? Marketing, sizzle, and sex appeal.... sell most things... even in aviation....did I say marketing?

I was at a 5000 foot Texas airport last fall and a CJ was based there. Took most of the runway to get off the ground.... inital climb was pathetic.... only slowly climbed and accelerated.... and that was on a cool fall day... not a 100+ summer day.

We went over and got a good look at the jet. Beautiful paint job with bright vibrant colors, sexy curves/ lines and a "V" tail...nice cabin....State of the art avionics.... a JET ENGINE.... and a Parachute.

Leldon


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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 13:46 
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Joined: 11/22/08
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Company: USAF Propulsion Laboratory
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If a Cirrus Jet showed up in my hangar, I would not throw it out. Granted there are some single engine turboprops that have equal or better performance for maybe the same capital investment. 300 kts is a pretty good step up in performance when coming from most piston aircraft. Flying in low flight levels it is probably better compared to a turboprop than other turbojet aircraft.


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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 14:11 
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Username Protected wrote:
If a Cirrus Jet showed up in my hangar, I would not throw it out.


Sounds like one of those repercussions of staying out at the local watering hole past midnight, and if an SF50 showed up in my hangar, it would draw the same response of “ what in the hell was I thinking”?

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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 14:54 
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I'll try to summarize for those who didn't see it.

1) The plane is too wide for it's length, it's inefficient because it has too much frontal surface area creating too much drag
2) The engine is too small and doesn't move enough air mass which is inefficient and therefore it burns much more fuel for the amount of thrust generated vs the turboprop.
3) The wing is too thick and jets should have swept wings because they can get closer to mach 1 to take advantage of super charged air at the engine inlet which increases efficiency.

Other points... useful load is half the turboprop, take off and landing distance is twice the turboprop, fuel burn is twice the turboprop, range is poor unless the seats in back are empty.

Yeah, the tone of the video was a bit over the top. That guy has some insecurity/jealousy issues that he needs to work out.

There are plenty of airplanes, boats, cars, etc that don't fit my mission but may fit other people's missions. If it doesn't fit your mission then don't buy one.

Everything in life is a compromise. Cirrus made the decisions that they thought would be best for their customers and the company. I most recently flew a G6 SR-22 (part of a club - never owned one) and it was a great machine. Visibility was excellent, cabin was comfortable, avionics integration was solid, training and support network outstanding. My wife liked the idea of the parachute in case I keeled over mid-flight. Also, the interior is very car-like compared to, say, a brand new Bonanza that still looks like 1969 inside. Heck, even the key fob for locking and unlocking looks like a car. It makes people feel comfortable being inside it and how you feel goes a long way to buying, whether it's a house, car, boat, or airplane.

Finally, the endless comments about the wing shape just shows ignorance. If all jets should have heavily swept wings then Learjets should still dominate the industry and Citations shouldn't exist. There is something to be said for the docile slow-speed handling characteristics of a straight wing. Mike C will be along shortly to describe how the wing on the 560 is a great compromise between swept and straight and I agree. But as a low time pilot, my plane really does fly like a big 182 (that stalls at 82 knots and cruises at 365 knots). It never makes any sudden moves even when super slow. I do dream of a 560 but it would have been too much airplane for me to start - a straight wing jet is the perfect stepping stone.


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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 15:18 
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Joined: 10/28/12
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Username Protected wrote:
If a Cirrus Jet showed up in my hangar, I would not throw it out.


Sounds like one of those repercussions of staying out at the local watering hole past midnight, and if an SF50 showed up in my hangar, it would draw the same response of “ what in the hell was I thinking”?


Yeah, but keeping with your analogy, I’d bet you’d fly it at least once, wouldn’t ya? :D

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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 16:54 
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The SF-50 is a gateway drug jet. Every salesman who sells "real" jets wants the SF-50 ownership list because those folks are the ones who will want to upgrade away from a noisy, slow, low jet into one that really performs.

Mike C.


I think this is it exactly.

Know a case in point. Guy started on his PPL. Tooled around for a couple hours in a C172, got into a new SR22. Finished PPL and IR. Flew it around for a while.

Put his money down on SF-50, got one of the early ones. Flew it a round for a while.

Now is looking at CJs and Phenoms. He has the cash/net worth/capital. Wants to own and fly.

I submit for argument, that if it weren’t for the SF-50, he might not be in the same space. He might have thought the jump from SR22 to C560 too great. He might have thought a jump to a turboprop like a C90 didn’t seem worth it. Etc…etc…. I also suggest that it is not marketed as a “jet” in the way old school pilots think of Citations, Lears and Gulfstreams. Cirrus markets it as a jet, yes, but with limitations. Apparently lots of people are OK with the SF-50 limits. And then after they have flown it several hundred hours, it becomes the gateway drug…

In other words, Cirrus made it easy for this guy I know, like Mike suggests. “Oh, you want a better plane than C172? We can help with that. Oh, you want to go 130kts faster? We can help with that.”


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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 20:25 
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I was at a 5000 foot Texas airport last fall and a CJ was based there. Took most of the runway to get off the ground.... inital climb was pathetic.... only slowly climbed and accelerated.... and that was on a cool fall day... not a 100+ summer day.

Must have been practicing one engine out takeoff, but even then, it should have used a lot less.

On ISA day, max weight, no wind, early model CJ (the least power) takes 3080 ft of runway, to 35 ft AGL, *AFTER* an engine fails at rotation on the runway. You can imagine it will be MUCH better if both engines operate through out the takeoff.

Takeoff ground roll is about 2000 ft, so way less than half the runway. I'm off the ground in 1500 ft typically in my plane.

The Cirrus SF-50 takeoff distance is listed as 2036 ft. That is ground roll only, no clearance height. So it uses about the same runway as the CJ.

The SF-50 engine out performance is, well, not great. The CJ wins that one easily.

Mike C.

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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 20:35 
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Joined: 08/06/19
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Seems like a decade or 2 ago the bashing was about the Slowtations and how they needed rear looking radar to keep the TSTM from overtaking them as well as birdcages on the exhaust to keep birds from overtaking and flying up the jetpipe. Looks like the 500 line and CJs are no longer the horse to take the beating as the Cirrus VisionJet has taken it up.
:deadhorse: :deadhorse:


If the buy in was much lower in the used Bonanza line prices then it would be pretty much ideal for me. I'm just a lowly corporate pilot with no other "side hustle" to be able to afford it. I'm struggling with the current A36 used prices and then having to spend about $50k just to update the panel with modest modern avionics. Hence I'm still airplane-less.

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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 20:38 
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Username Protected wrote:

The SF-50 engine out performance is, well, not great. The CJ wins that one easily.

Mike C.

My bad..,

The whole thread is about the Cirrus Jet.

I shorten it to CJ.... leading to some confusion.
Sorry.

LL

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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 20:40 
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Joined: 10/15/17
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Username Protected wrote:
I was at a 5000 foot Texas airport last fall and a CJ was based there. Took most of the runway to get off the ground.... inital climb was pathetic.... only slowly climbed and accelerated.... and that was on a cool fall day... not a 100+ summer day.

Must have been practicing one engine out takeoff, but even then, it should have used a lot less.

On ISA day, max weight, no wind, early model CJ (the least power) takes 3080 ft of runway, to 35 ft AGL, *AFTER* an engine fails at rotation on the runway. You can imagine it will be MUCH better if both engines operate through out the takeoff.

Takeoff ground roll is about 2000 ft, so way less than half the runway. I'm off the ground in 1500 ft typically in my plane.

The Cirrus SF-50 takeoff distance is listed as 2036 ft. That is ground roll only, no clearance height. So it uses about the same runway as the CJ.

The SF-50 engine out performance is, well, not great. The CJ wins that one easily.

Mike C.


At first glance I had the same comments, but if you read Leldon's full post it's likely he abbreviated cirrus jet as CJ which is easily confused by the citation jet CJ model name.

No doubt a sf50 would have the performance described.

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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 04 Jan 2023, 20:46 
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Username Protected wrote:
I shorten it to CJ.... leading to some confusion.

Ah, that makes more sense now.

Yes, the SF-50 is a bit of a runway hog despite having a lot of power for its weight.

Mike C.

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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 05 Jan 2023, 20:21 
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It is always entertaining the animus the SF50 seems to bring, especially the "real jet-sters" who have straight-wing Citations, who used to be the lowest on the totem pole of "jets".

:lol:


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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 05 Jan 2023, 21:02 
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Username Protected wrote:
I wish the Diamond Jet had continued to fruition.

That and I REALLY wish Eclipse hadn't sh1t the bed.



Agreed, I'm really surprised no one has picked up this airframe, recertify with Garmin avionics and sell - I'd bet they would do well.

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 Post subject: Re: Why is the Cirrus Jet so slow?
PostPosted: 06 Jan 2023, 00:21 
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Username Protected wrote:
It is always entertaining the animus the SF50 seems to bring, especially the "real jet-sters" who have straight-wing Citations, who used to be the lowest on the totem pole of "jets".

:lol:


Haha - I agree (even though I fly a very slow straight wing Citation) - don’t get the animosity either…


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