REFLECTOR: Fuel Consumption Performance

[nmflyer1 at aol.com]

Considering your low altitude Dave, That sounds pretty good! What RPM were you doing at those numbers? 

Kurt 


-----Original Message-----
From: David <n350tx at att.net>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Mon, Aug 3, 2009 7:03 pm
Subject: Re: REFLECTOR: Fuel Consumption Performance


79F8FDE2-E90C-4120-9A2C-E484CCFAA091 cid:2648E5ED-F796-444D-8B2F-016EB110B9C5 repeat #f3eded left top X-ASN,X-ASH,X-AN,X-AP,X-AD ; 




I?just came back from Oshkosh and I had 14.3gph at 185kts tas.? I cruised at 5500 to 8500.? I have not run my Chevy lean of peak yet?since there is little info on that operation.? With the big engines you probably will not do any better than 12gph?at most altitudes.

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Dave Bertram

N350TX

Chevy V-8

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-------Original Message-------

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From: Tom Tolton

Date: 8/3/2009 7:01:18 PM

To: reflector at tvbf.org

Subject: REFLECTOR: Fuel Consumption Performance


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I recently traveled to Oshkosh with a friend who owns a Velocity 173 with fixed gear and a 200 HP fuel injected Lycoming.? He was able to reduce gas consumption to 6.2 gallons per hour at 10500 feet and maintain a speed of about 125 nm/hr using LOP techniques.? 

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I am building a XLFG -5 with constant speed propeller.? I am looking for what one might expect in minimum gas consumption using LOP techniques at a density altitude of 10000? feet.? I am considering the Lycoming IO540 260 and 300 HP, as well as, the 310 HP Continental 550N.? It has been suggested that if I buy one of the more powerful 300 HP engines ?I will just be able to run with less throttle and bring the fuel consumption to a reasonable level.

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I would appreciate any comments / experience of the builders and owners with a similar XLFG configuration. ???

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Tom Tolton

989-835-5828 (Home)

989-750-8567 (Cell)

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