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01-18-2016, 06:38 PM
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Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,218
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Quote:
Originally Posted by meloosifah
I am not seeing a lot of 200hp RV8's cruising at 3000 rpm and only hitting 170 mph. Just sayin'. The -8 you are comparing to must be a monster dog. Not taking anything away from your radial - that thing looks awesome!
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150hp and a bit more drag = a slower airplane than a 200 hp RV.
But guess whose airplane everyone will be standing around at Oshkosh? ;-)
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Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
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01-18-2016, 06:47 PM
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Join Date: Jul 2006
Location: Ione, California
Posts: 254
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Congratulations! Very cool! Fuel flow? gph?
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01-18-2016, 08:00 PM
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Join Date: Jun 2006
Location: Port Orange, FL (7FL6)
Posts: 274
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Quote:
Originally Posted by meloosifah
I am not seeing a lot of 200hp RV8's cruising at 3000 rpm and only hitting 170 mph. Just sayin'. The -8 you are comparing to must be a monster dog. Not taking anything away from your radial - that thing looks awesome!
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The numbers I'm comparing to are 75% cruise numbers. But I also did a lot of aero work on the radial rv that I think helps. So it's hard for a true side to side comparison. I'm not measuring fuel flow yet (not until the efis is installed). All I know is I needed to satisfy one person with this project and I'm VERY satisfied!
I'll keep everyone up to date on the performance dats as testing continues.
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Flying as of 1-12-2016!!!!!
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01-18-2016, 08:53 PM
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Join Date: Jun 2007
Location: Atlanta
Posts: 745
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Almost looks like a F6 Hellcat from WW II. Very nice
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01-18-2016, 08:54 PM
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Join Date: Jan 2005
Location: Cincinnati, Ohio
Posts: 1,060
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Quote:
Originally Posted by flyboykelly
The numbers I'm comparing to are 75% cruise numbers. But I also did a lot of aero work on the radial rv that I think helps. So it's hard for a true side to side comparison. I'm not measuring fuel flow yet (not until the efis is installed). All I know is I needed to satisfy one person with this project and I'm VERY satisfied!
I'll keep everyone up to date on the performance dats as testing continues.
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Very nice accomplishment on the radial. Congrats!
But I'm sure there are a lot of us that are scratching our heads about a 200 hp RV8 that's cruise speed at 75 % pwr is only 170 mph.
We have a lot of RV8s in Cincinnati that cruise at well documented and verified 170 KNOTs at around 60%pwr, with parallel valve IO 360s.
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Jon Thocker
Habitual Offender
RV4, RV4, RV6A, RV8, RV8, RV8,RV8, RV8, RV8, RV12
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01-18-2016, 09:23 PM
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Join Date: Mar 2014
Location: Laguna Hills, CA
Posts: 1,805
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That things sounds amazing! Thanks for the video.
That big radial and associated cowling no doubt has more drag, which goes a long way toward explaining the lower cruise speed. Totally worth the trade....you've created a unique and wonderful machine.
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Doug
RV-9A "slider"
Flew to Osh in 2017, 2018 & 2019! 
Tail number N427DK
Donation made for 2020
You haven't seen a tree until you've seen its shadow from the sky -- Amelia Earhart
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01-18-2016, 10:40 PM
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Join Date: Nov 2005
Location: Flagstaff, AZ
Posts: 447
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Quote:
Originally Posted by donaziza
Almost looks like a F6 Hellcat from WW II. Very nice
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Or a WildCat  Super Super cool!
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01-18-2016, 11:04 PM
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Join Date: Jul 2009
Location: Lee's Summit, MO
Posts: 747
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Speeds
Heck...........who cares how fast it goes! If I built and was flying that airplane I wouldn't be in any hurry to reach the destination
Great job on the build.
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Robert Williams
Lee's Summit, MO
RV-8 - Empennage & Wings Done
Working on Fuse
O-360-A1A
1946 Cessna 120
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01-19-2016, 04:15 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by rightrudder
That things sounds amazing!
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Precisely.... love the sound.
Quote:
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That big radial and associated cowling no doubt has more drag, which goes a long way toward explaining the lower cruise speed.
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Brian, considering just firewall forward, do you know how much additional frontal area you actually have?
The frontal area of a stock RV8 might be considered the firewall area plus that part of the coal shovel cowl exit which extends below the belly skin line. The Rotec is only 33.5" diameter, so I'm guessing the cowl is not wider than stock.
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Dan Horton
RV-8 SS
Barrett IO-390
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01-19-2016, 04:16 AM
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Join Date: Mar 2007
Location: Gold Coast - Australia
Posts: 137
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Quote:
Originally Posted by flyboykelly
I'll keep everyone up to date on the performance dats as testing continues.
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Please do, I'm like a little kid waiting for the next edition of "Boys Own Journal" 
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Peter Vernon
Eagle Heights, Queensland, Australia
RV8, QB Wings, Standard Build Fuse (85% @ April 12)
email: pve95448@bigpond.net.au
Paid dues ... pleased to support DR
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