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  #1  
Old 06-27-2020, 09:36 PM
pilot28906 pilot28906 is offline
 
Join Date: Apr 2006
Location: Murphy, NC
Posts: 518
Default Ideal Eye Height

What is the ideal eye height for a RV-7. I have a booster with my seat cushions and am trying to decide if I should use them. Ideally how high should one sit in a side by side tail dragger?

Thanks,
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  #2  
Old 06-27-2020, 10:55 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Location: Hubbard Oregon
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As high as possible but still have a bit of head clearance below the canopy.
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Scott McDaniels
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  #3  
Old 06-28-2020, 06:36 AM
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D Weisgerber D Weisgerber is offline
 
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Location: Ionia Michigan
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I sit as high as possible as Scott said. The higher you sit the better the visibility over the nose.
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  #4  
Old 06-28-2020, 07:24 AM
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plehrke plehrke is offline
 
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Quote:
Originally Posted by pilot28906 View Post
Ideally how high should one sit in a side by side tail dragger?
Depends on how tight you cinch down your shoulder straps.
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  #5  
Old 06-28-2020, 11:18 AM
climberrn climberrn is offline
 
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Location: Carson City, NV
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Quote:
Originally Posted by rvbuilder2002 View Post
As high as possible but still have a bit of head clearance below the canopy.
Agreed. My wife used to like a 4 wedge under her seat cushion for the visibility. One morning we hit some nasty turbulence crossing the Sierras. When her head hit the canopy and got a bloody knot I got her a 1.5 lift instead. 3-4 clearance works well.

Tight straps only helps so much when it gets real bumpy.
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  #6  
Old 06-28-2020, 01:51 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Quote:
Originally Posted by climberrn View Post
Agreed. My wife used to like a 4” wedge under her seat cushion for the visibility. One morning we hit some nasty turbulence crossing the Sierras. When her head hit the canopy and got a bloody knot I got her a 1.5” lift instead. 3-4” clearance works well.

Tight straps only helps so much when it gets real bumpy.
I prefer to be higher than a 4" gap but all of the RV's I fly (including my own) have 5 point harnesses.

A 5 point harness... properly adjusted, goes a long way to keeping you down tight in the seat. A 4 point harness allows a lot of vertical movement by comparison.

The crotch strap and lap belt do most of the work restricting vertical movement. The shoulder straps help a little but with the anchor point so far aft of the seat (other than the RV-4 and 8) they mostly just prevent fwd movement (which is also much improved with the crotch strap because it prevents the shoulder straps from pulling the lap belt upward).
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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 : 06-28-2020 at 01:55 PM.
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  #7  
Old 06-28-2020, 04:54 PM
dreed dreed is offline
 
Join Date: Nov 2016
Location: Camas, WA
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I've got the opposite problem, I am afraid I may be a little too close when I do fly my plane. At 6'4" even with the Almost a 14 mod all the way back, I am pretty close to the canopy with my headset on. I think I have an inch, maybe two.

5 point harness so hope I'll be good, otherwise the cushions (at least mine) may get thinned a bit.
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Camas, WA
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