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Old 11-07-2017, 01:20 PM
Nihon_Ni's Avatar
Nihon_Ni Nihon_Ni is offline
Join Date: Jun 2011
Location: Fredericksburg, VA
Posts: 223
Default Additional Vents

I've been thinking about adding an additional vent or two to my RV-8. I found these RV-10 style vents in Van's catalog -- has anyone installed these in an -8?

If so, I'd like to get your feedback on placement and function.

Rob K
RV-8 under construction as of Sep 30, 2012
Tail kit completed on Feb 8, 2012 (180 hrs)
Wing kit mostly completed, fuselage under construction as of March 6, 2014 (750 hrs)
Paid up for 2017
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Old 11-07-2017, 09:25 PM
Robin8er Robin8er is offline
Join Date: Sep 2015
Location: Oahu HI
Posts: 191

I cant comment on it and dont want to hijack the thread, but how is the airflow in a stock rv8? is it adequate?
N695RA Reserved
Emp and Wings done, working on Fuselage.

Born to fly, forced to work
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Old 11-08-2017, 05:43 AM
ILikePike ILikePike is offline
Join Date: Jan 2011
Location: Eatonton, GA
Posts: 195

I used two small high quality vents from Stein mounted high on the front side panels from the front intake and stock set up in back. Airflow is great. (better than expected) The stock heater is marginal. If operating in colder regions it would need improvement.
Jeff Green
2016 RV-8 #82985
1968 E33C Aerobatic Bonanza
Pleased to donate Dec 2017
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Old 11-08-2017, 06:53 AM
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Carl Froehlich Carl Froehlich is online now
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 1,261

Originally Posted by Robin8er View Post
I cant comment on it and dont want to hijack the thread, but how is the airflow in a stock rv8? is it adequate?
For me, yes. The new project will again just have the two vents. Others may have different opinions.

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Old 11-08-2017, 08:03 AM
Ralph Inkster Ralph Inkster is offline
Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 335

Before cutting further holes in the side of the fuselage, I'd experiment with installing a 'T' in the scatt tube, running to a second eyeball vent. I've found the NACA scoops provide lots of air volume, usually ending up partially closing the eyeball vent to keep things flying around in the cockpit. The other thing of advantage (to me at least) would be to spread out the air flow over more of my body instead of the concentrated blast in my face or chest.
Maintain lots, upgraded & repaired some, modified more, rebuild a few, & built 4 of 'em
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Old 11-09-2017, 01:17 PM
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AAflyer AAflyer is offline
Join Date: May 2009
Location: Belle Mead, New Jersey
Posts: 285
Default Are you flying, yet?

Most -8's seem to have more trouble keeping the airflow in the cockpit from blowing their hats off, than having too little>
Bruce Windom
QB RV-8 N148BW
First Flight: Oct '16
AeroSport Power IO-360 180hp w/dual P-Mags
Catto 3-blade, with black carbon spinner.
10" Dynon SkyviewTouch. That's ALL.
2018 Dues Paid
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