04 May 2025, 06:49 [ UTC - 5; DST ]
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Post subject: Re: Cool Carbon Cub  Posted: 03 Nov 2013, 07:14 |
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Joined: 08/09/08
Posts: 2603
Post Likes: +1733
Location: Central Virginia
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Username Protected wrote: The Carbon Cub is, in fact, the bomb. Great fun. ...Most of my cross country flying in it is low enough that I wander around just to see the next interesting thing... Jim, what's the theory about pulling power back to 80HP after five minutes? Is that five minutes at 180HP Per Flight, Per Takeoff? ... or can the 180 HP be used again in a pinch if needed? ...and if so, then only for another five minutes? It's easy to see that 180HP at cruise will load up a lot of drag on the structure. But at lower speeds that huge power reserve could be converted to great climb capability, I presume. What other reasons are there for the 80HP restriction? Thanks.
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Fred W. Scott, Jr
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Post subject: Re: Cool Carbon Cub Posted: 03 Nov 2013, 07:39 |
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Joined: 06/08/12
Posts: 12581
Post Likes: +5188
Company: Mayo Clinic
Location: Rochester, MN
Aircraft: Planeless in RST
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Username Protected wrote: The Carbon Cub is, in fact, the bomb. Great fun. I did get the glass cockpit, but I opted to not get an autopilot. The glass was heretical enough. And really, it doesn't need an autopilot. Most of my cross country flying in it is low enough that I wander around just to see the next interesting thing. Twisting the knob to see it just wouldn't get it for me.
And that from a man who owns a Cirrus too...
Jim Jim, I'm so happy to see that owning your Cirrus hasn't affected your very cool sense of humor (yet....) Good to hear/read from you,
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BFR 8/18; IPC 8/18
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Post subject: Re: Cool Carbon Cub Posted: 03 Nov 2013, 08:39 |
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Joined: 08/11/08
Posts: 1437
Post Likes: +311
Location: KAAF Apalachicola, Fl
Aircraft: CCSS: N3YC
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Username Protected wrote: The Carbon Cub is, in fact, the bomb. Great fun. ...Most of my cross country flying in it is low enough that I wander around just to see the next interesting thing... Jim, what's the theory about pulling power back to 80HP after five minutes? Is that five minutes at 180HP Per Flight, Per Takeoff? ... or can the 180 HP be used again in a pinch if needed? ...and if so, then only for another five minutes? It's easy to see that 180HP at cruise will load up a lot of drag on the structure. But at lower speeds that huge power reserve could be converted to great climb capability, I presume. What other reasons are there for the 80HP restriction? Thanks.
The power restriction is 100% rule based. The airplane is certified as an LSA and as such limited in gross weight. Part of the formula for the gross weight is maximum sustained power...with higher being worse for the weight. Don't ask me what the formula is. At any rate, by placarding it for 80 hp maximum sustained...the gross weight can be 1320. In fact, there are no actual limits to the power...well, you can't use full power when the windows are open.
They make a carbon cub kit...the gross weight on it is 1775 (if memory serves) and it is not one whit different from the LSA carbon cub. Well, that isn't exactly true...the horizontal stabilizer is slightly larger. They did that because they couldn't control the weight of the engine placed in the kit airplane, and thusly needed the tail oomph to handle the higher weight (potentially) engine.
Oh, and the kit built airplane has been tested to 1775...and isn't at all different from the LSA which is limited to 1320. There may be some people who fly it a tad overweight.
And if you run the power up to around 110 hp (or so) (I've heard) it cruises nicely at 100kts and 7 gph. Pushing any harder just burns fuel, pretty much (I found that out in 5 minute increments, of course).
Jim
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Jim Harper
Montgomery, AL
and
Apalachicola, FL
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Post subject: Re: Cool Carbon Cub Posted: 03 Nov 2013, 08:40 |
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Joined: 08/11/08
Posts: 1437
Post Likes: +311
Location: KAAF Apalachicola, Fl
Aircraft: CCSS: N3YC
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Username Protected wrote: The Carbon Cub is, in fact, the bomb. Great fun. I did get the glass cockpit, but I opted to not get an autopilot. The glass was heretical enough. And really, it doesn't need an autopilot. Most of my cross country flying in it is low enough that I wander around just to see the next interesting thing. Twisting the knob to see it just wouldn't get it for me.
And that from a man who owns a Cirrus too...
Jim Jim, I'm so happy to see that owning your Cirrus hasn't affected your very cool sense of humor (yet....) Good to hear/read from you,
Hell, Luc, I've been away because I've been taking a Lean Six Sigma Black Belt course online. Very time consuming...
Jim
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Jim Harper
Montgomery, AL
and
Apalachicola, FL
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Post subject: Re: Cool Carbon Cub Posted: 03 Nov 2013, 11:39 |
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Joined: 12/13/07
Posts: 20381
Post Likes: +10387
Location: Seeley Lake, MT (23S)
Aircraft: 1964 Bonanza S35
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Username Protected wrote: The Carbon Cub is, in fact, the bomb. Great fun. ...Most of my cross country flying in it is low enough that I wander around just to see the next interesting thing... Jim, what's the theory about pulling power back to 80HP after five minutes? Is that five minutes at 180HP Per Flight, Per Takeoff? ... or can the 180 HP be used again in a pinch if needed? ...and if so, then only for another five minutes? It's easy to see that 180HP at cruise will load up a lot of drag on the structure. But at lower speeds that huge power reserve could be converted to great climb capability, I presume. What other reasons are there for the 80HP restriction? Thanks.
Fred, it's a scam. A brilliant scam. By reg a CC is really a one person airplane. However it's the same airplane as the non LSA plane. The CC weighs about 900 pounds empty. The average 200 pound guy and a full tank leaves 70 pounds for your passenger. Suffice it to say that every CC routinely flys overgross.
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Post subject: Re: Cool Carbon Cub Posted: 03 Nov 2013, 12:09 |
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Joined: 12/12/07
Posts: 23768
Post Likes: +7611
Location: Columbia, SC (KCUB)
Aircraft: 2003 Bonanza A36
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Username Protected wrote: the only thing cooler than a carbon cub is a carbon cub on floats. I lost the "how long until Rick buys a seaplane?" pool a long time ago. 
Oh I am going to buy a seaplane, just not until I retire. Its going to be my retirement gift to myself.
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Minister of Ice
Family Motto: If you aren't scared, you're not having fun!
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Post subject: Re: Cool Carbon Cub Posted: 03 Nov 2013, 13:48 |
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Joined: 02/21/11
Posts: 496
Post Likes: +50
Location: St George, UT
Aircraft: 340A & R44II
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Username Protected wrote: Threads like these need to be banned...... I am in enough trouble as it is....  EDIT: Right after posting this I was on Trade a plane looking at Cubs.... YES, This thread needs to be banned !!!!!!  I'm right there with ya, Babar.  I keep looking more and more at Cubs. Do I need one? No. Do I want one? YES! Now to convince the accountant. 
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Mark McAuliffe
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