REFLECTOR: Speed and Efficiency

[Laurence Coen]

Bill,

I got 180 KTAS in my SE/RG at a DA of 8000 ft, 2700 RPM WOT 12.2 GPH, solo 
and half fuel (level flight).  I don't fly that way when I'm going 
somewhere.  Near gross at 10,000 ft DA and 2600 RPM fuel flow drops to 9.8 
GPH and KTAS to 174.

Larry Coen
N136LC Franklin/IVO

--------------------------------------------------
From: "Stockman, Bill" <bill.stockman at daytonaero.com>
Sent: Monday, May 05, 2014 7:09 PM
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Subject: Re: REFLECTOR: Speed and Efficiency

> Unless that SE-RG is pointing straight down, I have my doubts about 180 
> kts.
> ________________________________________
> From: reflector-bounces at tvbf.org [reflector-bounces at tvbf.org] On Behalf Of 
> Reiff Lorenz [Reiff at lorenz.com]
> Sent: Monday, May 05, 2014 6:24 PM
> To: reflector at tvbf.org
> Subject: REFLECTOR: Speed and Efficiency
>
> Recently, some performance stats were posted to the VOBA forum. I want to 
> get everyone's input, so I'm re-posting it here.
>
>
>
> Owners, please reply with details of your plane and what numbers you use 
> for flight planning . . .
>
>
>
> •         What model and engine are you flying? XL/SE? Fixed or RG? 
> Engine?
>
> •         What is your efficiency cruise KTAS, GPH, and altitude?
>
> •         What is your speed cruise KTAS, GPH, and altitude?
>
>
>
>
>
> (If you already posted your stats in the VOBA forum, you don't need to 
> send them again. I have not finished compiling the results, so your 
> numbers may not be listed below.)
>
>
>
> Reiff
>
>
>
>
>
> =============================
>
>
>
> Here are the performance stats that John and Scott reported:
>
>
>
> Aircraft
>
>
> Engine
>
>
> KTAS
>
>
> GPH
>
>
> Alt
>
>
> SE-RG
>
>
> Lycoming IO-360
>
>
> 180
>
>
> 10
>
>
> Twin
>
>
> Lycoming IO-320
>
>
> 170
>
>
> 12
>
>
> Twin
>
>
> Lycoming IO-320
>
>
> 180
>
>
> 14
>
>
> Twin
>
>
> Lycoming IO-360
>
>
> 215
>
>
> 20
>
>
> Twin
>
>
> Lycoming IO-360
>
>
> 195
>
>
> 16
>
>
> TXL-RG
>
>
> Continental TSIO-550-c
>
>
> 250
>
>
> 17.5
>
>
> FL240
>
>
> XL-RG
>
>
> Continental IO-550
>
>
> 205
>
>
> 13.5
>
>
> XL-RG
>
>
> Lycoming IO-540 (300)
>
>
> 200
>
>
> 14.5
>
>
> XL-RG
>
>
> Lycoming IO-540 (260)
>
>
> 185
>
>
> 13
>
>
> XL-RG
>
>
> Lycoming IO-580 (315)
>
>
> 202
>
>
> 16
>
>
>
>
> Are others in the community seeing similar performance
>
>
>
> This isn’t a speed contest, it’s a reality check. Post your typical flight 
> numbers and I’ll compile them into something we all can use.
>
>
>
>
>
> Reiff Lorenz, Dayton, Ohio
>
> Velocity XL-RG, 56% complete
>
> Currently working on: Fitting glare shield, panel, and frame
>
>
>
>
>
>
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