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02-23-2018, 05:49 AM
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Join Date: Sep 2012
Location: 07TS
Posts: 472
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What are the real world fuel burns and speeds on a 14A?
I do abouot 147 knots (IO 320 with CS Prop) on my 9A at altitude, burning about 6.5 gallons LOP.
What would be reasonable on a 14A?
-Dan
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Dan Weyant
RV-9A N96KD
Done and Flying 4/30/2015
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02-23-2018, 12:39 PM
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Super Moderator
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Join Date: May 2005
Location: Locust Grove, GA
Posts: 2,626
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I see 165-170 KTAS on the 14A with 10 or less gallons per hour. I haven't spent a lot of time at LOP yet.
Vic
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 Vic Syracuse
Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P/IA, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
Kitplanes "Unairworthy" monthly feature
EAA Sport Aviation "Checkpoints" column
EAA Homebuilt Council Chair/member EAA BOD
Author "Pre-Buy Guide for Amateur-Built Aircraft"
www.Baselegaviation.com
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02-23-2018, 01:14 PM
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Join Date: Mar 2014
Location: Granbury, TX
Posts: 268
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I consistently see 155 KIAS and 170 KTAS at 7500 feet burning 8.2-8.3 gph running LOP.(Superior XP400, dual PMags).
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Keith Brown
RV-14A Builder - kit #136
N314KC - First flight Mar 8, 2017, 24th in the air, >600 hrs
XP-400 Aero Sport Power, replaced with Lyc Thunderbolt 390
RV-6A sold
Sport Pilot (weight-shift control) - Airborne XT912
Dues paid 9/2020
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02-23-2018, 01:43 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by vic syracuse
I see 165-170 KTAS on the 14A with 10 or less gallons per hour. I haven't spent a lot of time at LOP yet.
Vic
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Quote:
Originally Posted by KeithB
I consistently see 155 KIAS and 170 KTAS at 7500 feet burning 8.2-8.3 gph running LOP.(Superior XP400, dual PMags).
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The 14 and 14A prototypes based on the west coast will both cruise at 170 - 172 Kts TAS at 8.2 - 8.3 GPH (depends on actual conditions), at 9.5 - 10.5K.
Fuel flow could be a bit lower (at the expense of slightly lower speed) because neither of these engines has had any flow matching work done with the injectors, so these specified values are with the mixture only slightly lean of peak.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
Last edited by rvbuilder2002 : 02-23-2018 at 01:55 PM.
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02-23-2018, 01:54 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by Carl Froehlich
My experience is the RV-10 is a little faster than the RV-14 as well.
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Quote:
Originally Posted by czechsix
Sadly this appears to be true, at least comparing the -10 to the -14A. But look on the bright side, the OP will be able to go a bit faster in a -14A than he did in his -9A while burning a lot more fuel 
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Depends on the conditions and situation.....
If Van's RV-10 and RV-14A demonstrators are flown side by side at 10.5K, WOT/2350 RPM and just slightly lean of peak, they will both be at a TAS of about 170Kts. The RV-14A will be burning about 8.3 GPH with the RV-10 burning about 10.5 GPH.
Down lower, if you are willing to burn the fuel, the RV-10 can be a bit faster.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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