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  #11  
Old 02-23-2018, 05:49 AM
dweyant dweyant is offline
 
Join Date: Sep 2012
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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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  #12  
Old 02-23-2018, 12:39 PM
vic syracuse vic syracuse is offline
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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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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
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  #13  
Old 02-23-2018, 01:14 PM
KeithB KeithB is offline
 
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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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  #14  
Old 02-23-2018, 01:43 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
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Quote:
Originally Posted by vic syracuse View Post
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
Quote:
Originally Posted by KeithB View Post
I consistently see 155 KIAS and 170 KTAS at 7500 feet burning 8.2-8.3 gph running LOP.(Superior XP400, dual PMags).
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.
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Last edited by rvbuilder2002 : 02-23-2018 at 01:55 PM.
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  #15  
Old 02-23-2018, 01:54 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
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Quote:
Originally Posted by Carl Froehlich View Post
My experience is the RV-10 is a little faster than the RV-14 as well.
Quote:
Originally Posted by czechsix View Post
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
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.
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