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  #21  
Old 11-09-2018, 11:23 PM
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gmcjetpilot gmcjetpilot is offline
 
Join Date: Jan 2005
Posts: 4,688
Default

Quote:
Originally Posted by MConner View Post
And a a 50 year old airframe with retracts and an FAA strait jacket on changes to avionics and airframes? Not even apples and oranges.
Being the manufacturer and maintenance shop, able to do modifications and use your own fabricated parts or "experimental" parts (engine, prop, avionics, EFIS), with less FAA restrictions, is priceless (and less expensive to own because of that). Resale of RV's had proved to be excellent.

For 2 seats side-by -side or tandem there are not many GA aircraft to compare to the RV-7/14 or RV-4/8, so that helps decision to built. Most builders love working with their hands, process and learning.
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Last edited by gmcjetpilot : 11-09-2018 at 11:31 PM.
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  #22  
Old 11-10-2018, 11:51 AM
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jliltd jliltd is offline
 
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Location: Rancho San Lorenzo
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I own a 260B Comanche and it is fantastic, stable, speedy, safe and has a huge CG range. No cowl flaps or cooling problems. And maintenance isn't too bad if kept up with.

Jim
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  #23  
Old 11-10-2018, 12:14 PM
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Ivan Kristensen Ivan Kristensen is offline
 
Join Date: Mar 2008
Location: Guelph Ontario
Posts: 294
Default Because we're passionate......

Quote:
Originally Posted by Kyle Boatright View Post
A lot of very rational people would choose the Comanche or an equivalent Bo over the RV-10, given the $100k cost difference. We buy/build RV's (and own Comanches) because we're passionate, not because any of it makes sense or can be reasonably justified.
Kyle,
You hit the nail right on the head with the above statement.

"We buy/build RV's (and own Comanches) because we're passionate, not because any of it makes sense or can be reasonably justified."
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RV-10 (C-GMDV) 1450hrs.
Dual GRT 8.4" HXr EFIS, VP-200, TT A/P, Avidyne IFD440, uAvionixX ADS-B out, Sky Radar WX and Traffic, Dual EI's (one Lightspeed & one SDS CPI)

RV-14A under construction.
An ADVANCED PANEL from AFS. Dual AF5600 10.4" EFIS'
Avidyne IFD540 FMS Navigator, uAvionix AV-30 B/U EFIS
Lycoming IO-390 EXP
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  #24  
Old 12-30-2018, 04:29 PM
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grubbat grubbat is offline
 
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Location: Ga
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Default Indicated vs True

Descending out of 17,000ft at VNE (not recommended), the RV-10 would need to keep indicated airspeed around 148kts or less due to the weaker structure. It is true air speed limited to 200kts.

On the other hand, the stronger yet older (50yr) Comanche could descend at 201kts INDICATED which trues out to around 270kts.

Once the -10 gets down to around 8500ft, it'll will be back in the hunt..... unless the Comanche has already landed, refueled, and robbed the courtesy car. (I hate it when that happens!)

Happy New Year!
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  #25  
Old 09-16-2020, 04:13 PM
togaflyer togaflyer is offline
 
Join Date: Apr 2013
Location: Fl/Ga
Posts: 813
Default

Those are really great planes but the thing that really separates the certified vs experimental world is the yearly inspection. My condition this year was a whopping 51 dollars, cost of a KN filter. 30 plus years of owning a certified plane, never had an annual that cheep.
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  #26  
Old 09-16-2020, 04:43 PM
rocketman1988 rocketman1988 is online now
 
Join Date: Jun 2010
Location: Sunman, IN
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Quote:
Originally Posted by grubbat View Post
Descending out of 17,000ft at VNE (not recommended), the RV-10 would need to keep indicated airspeed around 148kts or less due to the weaker structure. It is true air speed limited to 200kts.

On the other hand, the stronger yet older (50yr) Comanche could descend at 201kts INDICATED which trues out to around 270kts.

Once the -10 gets down to around 8500ft, it'll will be back in the hunt..... unless the Comanche has already landed, refueled, and robbed the courtesy car. (I hate it when that happens!)

Happy New Year!

Weaker structure? Hardly. It is more about flutter margins...
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  #27  
Old 09-16-2020, 06:36 PM
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Brdog42 Brdog42 is offline
 
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Default 400 engine

Twin turbo 400 from the factory at KCHD. Piper only made a handful of the twin turbos, BTW. I do not what to know itís GPH FF.
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  #28  
Old 09-16-2020, 08:28 PM
rocketman1988 rocketman1988 is online now
 
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Quote:
Originally Posted by Brdog42 View Post
Twin turbo 400 from the factory at KCHD. Piper only made a handful of the twin turbos, BTW. I do not what to know itís GPH FF.
A normally aspirated io-720 has a 34 gph FF at TO power, about 23.5 gph at 75%. If it is turbo normalized at 400 hp, 34 GPH continuous wouldn't be out of line...
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Garmin G3X-T, Barrett EFII S32, CAI, MTV-9B

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  #29  
Old 09-16-2020, 11:06 PM
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grubbat grubbat is offline
 
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Default Ok

I stand corrected. Letís modify that to be TAS limited. Comanche still gets the courtesy car. 😜

Quote:
Originally Posted by rocketman1988 View Post
Weaker structure? Hardly. It is more about flutter margins...
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  #30  
Old 09-17-2020, 01:25 AM
BobTurner BobTurner is offline
 
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Location: Livermore, CA
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Quote:
Originally Posted by grubbat View Post
I stand corrected. Letís modify that to be TAS limited. Comanche still gets the courtesy car. 😜
I donít think so. Since both airplanes cruise nearly the same speed on the same power, their drag must be comparable too. To descend at faster than 200 knots true, the Commanche will need a steeper angle of descent. Which means it canít start the descent until later. So while the -10 is coming down at 200 ktas the Commanche is still cruising at 160, then, finally making a very steep and fast descent. Figure in a higher climb rate (-10 has a higher power to weight ratio) and slightly faster cruise, and I think the -10 driver will get the car. Would make for an interesting fly-off, tie down to tie down.
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