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  #11  
Old 09-30-2011, 12:11 PM
Dmadd Dmadd is offline
 
Join Date: Jul 2008
Location: Camas, WA
Posts: 466
Default

A few VG's on the inboard section of wing will do the same thing. Keeps the inboard wing section active at high AOA. Did it to my four, but it lowered stall so much it floated too much. I took them back off.
On the up side, NO ONE could turn with me.... So there was that.. :-)

Dm
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  #12  
Old 09-30-2011, 05:10 PM
drakerv drakerv is offline
 
Join Date: Feb 2006
Location: Redmond Wash
Posts: 95
Default strakes

Please contact Brad Heinitz as he now handles the RV-8 strakes at:
bcheinitz@hotmail.com
360.588.2325 (shop)
206.818.4767 (mobile)
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  #13  
Old 09-30-2011, 09:07 PM
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Wardo Wardo is offline
 
Join Date: Jan 2009
Location: Baker Florida (Sky Ranch)
Posts: 71
Default strakes

Quote:
Please contact Brad Heinitz as he now handles the RV-8 strakes at:
bcheinitz@hotmail.com
thank you drakerv.
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  #14  
Old 10-01-2011, 02:02 AM
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JordanGrant JordanGrant is offline
 
Join Date: Feb 2006
Location: Virginia
Posts: 292
Default learned something RV today

I had no idea about that mod. Interesting.
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  #15  
Old 10-01-2011, 02:13 PM
Dragonfly Dragonfly is offline
 
Join Date: Jul 2009
Location: New Zealand
Posts: 51
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As mentioned VG's should do the same thing, much easier to fit, and temporary if you dont like them.
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  #16  
Old 10-01-2011, 06:14 PM
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DanH DanH is offline
 
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Location: 08A
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Carl, I noticed you have strakes and VG's. Can you tell us how each affected performance and flying qualities?
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  #17  
Old 10-01-2011, 06:35 PM
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humptybump humptybump is offline
 
Join Date: Feb 2011
Location: Eastern Shore of Virginia
Posts: 3,073
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Dan, the builder of my RV-8 tested with the strakes and later added (and then removed VGs). He expressed that his VGs did not measurably improve any characteristics of flight.

Carl - do you have before&after experiences. I too am interested in your comments.
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  #18  
Old 10-02-2011, 12:44 PM
drakerv drakerv is offline
 
Join Date: Feb 2006
Location: Redmond Wash
Posts: 95
Default strakes

a response to me

Marc;
I flew the RV-8 this morning for the first time since I installed the strakes. Wow, what a difference in the landings. I made three landings here and at Omak, and it is now very docile, even in three point landings. The attached picture is of--- landing at Okanogan, and he agrees it is a great improvement in landings.
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  #19  
Old 10-02-2011, 12:56 PM
scsmith scsmith is offline
 
Join Date: Jan 2008
Location: Ashland, OR
Posts: 1,889
Default Another data point

I started my Phase I testing without intersection fairings (or any other gear fairings) and had a nice stall, nothing alarming.

After I put the gear fairings and intersection fairings on, I found a very strange sound more than feel just at stall. I don't get any tail shake, but a funny whooshing sound and slight vibration in the side of the fuselage that I believe is the vortex forming at the gear junction and running by the side of the cockpit.

I know this is odd - the reverse of common experience. Also, my stall speed seems high, but I have not thoroughly chased out any possible leaks in the static system. The instrument reads 3 kts high at 55 kt, and my "indicated" stall speed with flaps UP is 61 kts.

So, I don't know if I hit some magic shape with my intersection fairings that does this -- they look about like everyone else's. I've been thinking about adding the strakes.
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  #20  
Old 01-24-2018, 12:38 PM
Boyd Birchler Boyd Birchler is offline
 
Join Date: Sep 2014
Location: IN
Posts: 158
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We used strakes in an identical manor on a Pitts S1t experimental. The stock fabric covered gear had no problems, but when that was changed to aluminum gear; it limited max G in high G pulls. Adding the strakes got you about one G more, before onset of buffet, in a pull. Similar science but on a different airframe.
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