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Upper wing gap seals

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b2brown2001 avatar
(@b2brown2001)
Active Member
Joined: 9 years ago
Posts: 6
Topic starter  

I took some aerobatic lessons with Chandler Air Service in the Great Lakes.  I noticed that all 3 of their planes had gaps between the outer upper wings and the center upper wing.  The instructor told me that the planes were made that way.  Our Great Lakes (1976, same year) has gap seals in that area.  Does anyone know the benefit of having or not having upper wing gap seals?  Which way did they come from the factory?  I looked in the Aircraft Logbook but didn't see any mention of adding upper wing gap seals.  Was this a factory option?  


   
Quote
John Duncan avatar
(@john-duncan)
Estimable Member
Joined: 19 years ago
Posts: 174
 

Would you mind posting pictures of your gap seals?  

Regards,
John Duncan
Warner Engines
Great Lakes Aircraft

To: greatlakesbiplane@yahoogroups.com
From: greatlakesbiplane@yahoogroups.com
Date: Mon, 22 Aug 2016 15:20:00 -0700
Subject: [greatlakesbiplane] Upper wing gap seals

 

I took some aerobatic lessons with Chandler Air Service in the Great Lakes.  I noticed that all 3 of their planes had gaps between the outer upper wings and the center upper wing.  The instructor told me that the planes were made that way.  Our Great Lakes (1976, same year) has gap seals in that area.  Does anyone know the benefit of having or not having upper wing gap seals?  Which way did they come from the factory?  I looked in the Aircraft Logbook but didn't see any mention of adding upper wing gap seals.  Was this a factory option?  


   
ReplyQuote
gtg15751 avatar
(@gtg15751)
Reputable Member
Joined: 14 years ago
Posts: 279
 
Mine has factory gap seal ctr sect to upper wingsm circa 1979-1983
Sent from my BlackBerry 10 smartphone.
From: John Duncan johnaduncan@msn.com [greatlakesbiplane]
Sent: Monday, August 22, 2016 18:56
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane] Upper wing gap seals

 

Would you mind posting pictures of your gap seals?  

Regards,
John Duncan
Warner Engines
Great Lakes Aircraft

To: greatlakesbiplane@yahoogroups.com
From: greatlakesbiplane@yahoogroups.com
Date: Mon, 22 Aug 2016 15:20:00 -0700
Subject: [greatlakesbiplane] Upper wing gap seals

 

I took some aerobatic lessons with Chandler Air Service in the Great Lakes.  I noticed that all 3 of their planes had gaps between the outer upper wings and the center upper wing.  The instructor told me that the planes were made that way.  Our Great Lakes (1976, same year) has gap seals in that area.  Does anyone know the benefit of having or not having upper wing gap seals?  Which way did they come from the factory?  I looked in the Aircraft Logbook but didn't see any mention of adding upper wing gap seals.  Was this a factory option?  


   
ReplyQuote
John Hofmann avatar
(@johnhofmann)
Member Admin
Joined: 4 years ago
Posts: 7241
 

There’s a couple pictures of Bobby Croll’s ‘lakes on my “Oregon Lakes” album.  His factory bird was fitted with exceptionally nice upper wing gap seals.  Kinda hard to see.  I may have a few close-ups somewhere.  If I find them I’ll post.  Not sure if Bobby in on this group.  If you’re here Bobby, can you share?

 

Ranger Mike

 

From: greatlakesbiplane@yahoogroups.com [mailto:greatlakesbiplane@yahoogroups.com]
Sent: Monday, August 22, 2016 3:45 PM
To: greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane] Upper wing gap seals

 

 

Would you mind posting pictures of your gap seals?  

 

Regards,

 

John Duncan

 

Warner Engines

Great Lakes Aircraft

 

 


To: greatlakesbiplane@yahoogroups.com
From: greatlakesbiplane@yahoogroups.com
Date: Mon, 22 Aug 2016 15:20:00 -0700
Subject: [greatlakesbiplane] Upper wing gap seals

 

I took some aerobatic lessons with Chandler Air Service in the Great Lakes.  I noticed that all 3 of their planes had gaps between the outer upper wings and the center upper wing.  The instructor told me that the planes were made that way.  Our Great Lakes (1976, same year) has gap seals in that area.  Does anyone know the benefit of having or not having upper wing gap seals?  Which way did they come from the factory?  I looked in the Aircraft Logbook but didn't see any mention of adding upper wing gap seals.  Was this a factory option?  


   
ReplyQuote
gtg15751 avatar
(@gtg15751)
Reputable Member
Joined: 14 years ago
Posts: 279
 
Mine are "v"ed to the trailing edge contour with hole in centre reinforced then the flat other end is nutplated for 10/32 riveted to it; a long, maybe 4-5 "  10/32 screw pulls them together.  
Sent from my BlackBerry 10 smartphone.
From: 'Mike Danielle' mikeda@centurylink.net [greatlakesbiplane]
Sent: Monday, August 22, 2016 21:27
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane] Upper wing gap seals

 

There s a couple pictures of Bobby Croll s lakes on my Oregon Lakes album.  His factory bird was fitted with exceptionally nice upper wing gap seals.  Kinda hard to see.  I may have a few close-ups somewhere.  If I find them I ll post.  Not sure if Bobby in on this group.  If you re here Bobby, can you share?

 

Ranger Mike

 

From: greatlakesbiplane@yahoogroups.com [mailto:greatlakesbiplane@yahoogroups.com]
Sent: Monday, August 22, 2016 3:45 PM
To: greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane] Upper wing gap seals

 

 

Would you mind posting pictures of your gap seals?  

 

Regards,

 

John Duncan

 

Warner Engines

Great Lakes Aircraft

 

 


To: greatlakesbiplane@yahoogroups.com
From: greatlakesbiplane@yahoogroups.com
Date: Mon, 22 Aug 2016 15:20:00 -0700
Subject: [greatlakesbiplane] Upper wing gap seals

 

I took some aerobatic lessons with Chandler Air Service in the Great Lakes.  I noticed that all 3 of their planes had gaps between the outer upper wings and the center upper wing.  The instructor told me that the planes were made that way.  Our Great Lakes (1976, same year) has gap seals in that area.  Does anyone know the benefit of having or not having upper wing gap seals?  Which way did they come from the factory?  I looked in the Aircraft Logbook but didn't see any mention of adding upper wing gap seals.  Was this a factory option?  


   
ReplyQuote
John Hofmann avatar
(@johnhofmann)
Member Admin
Joined: 4 years ago
Posts: 7241
 
The new Waco version does not have seals although one of the other new
model owners has created his own using some kind of clear flexible rubber tape
(not duct tape but about the same width).  This is the white plane with
red trim that was parked in the aerobatic section at Oshkosh for those who might
have been to the show.  He said that he didn t notice a big difference from
the upper wing seals but he did something similar to seal the gaps between the
vertical stabilizer and rudder as well as between the elevators and horizontal
stabilizers, which he says he definitely notices improvements to control
effectiveness.
 
From: mailto:greatlakesbiplane@yahoogroups.com
Sent: Monday, August 22, 2016 10:03 PM
To: mailto:greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Upper wing gap
seals
 
 

Mine
are "v"ed to the trailing edge contour with hole in centre reinforced then the
flat other end is nutplated for 10/32 riveted to it; a long, maybe 4-5 " 
10/32 screw pulls them together. 
Sent
from my BlackBerry 10 smartphone.
From: 'Mike Danielle' mikeda@centurylink.net
[greatlakesbiplane]
Sent: Monday, August 22, 2016 21:27
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane] Upper wing gap
seals
 
 

There s a couple
pictures of Bobby Croll s lakes on my Oregon Lakes album.  His factory
bird was fitted with exceptionally nice upper wing gap seals.  Kinda hard
to see.  I may have a few close-ups somewhere.  If I find them I ll
post.  Not sure if Bobby in on this group.  If you re here Bobby, can
you share?

Ranger
Mike

From:
greatlakesbiplane@yahoogroups.com [mailto:greatlakesbiplane@yahoogroups.com]
Sent: Monday, August 22, 2016 3:45 PM
To:
greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane]
Upper wing gap seals

 

Would you mind posting pictures of your gap seals? 

Regards,

John Duncan

Warner Engines

Great Lakes Aircraft


To: greatlakesbiplane@yahoogroups.com
From:
greatlakesbiplane@yahoogroups.com
Date:
Mon, 22 Aug 2016 15:20:00 -0700
Subject: [greatlakesbiplane] Upper wing gap
seals

 

I took some aerobatic lessons with Chandler Air Service in the Great
Lakes.  I noticed that all 3 of their planes had gaps between the outer
upper wings and the center upper wing.  The instructor told me that the
planes were made that way.  Our Great Lakes (1976, same year) has gap seals
in that area.  Does anyone know the benefit of having or not having upper
wing gap seals?  Which way did they come from the factory?  I looked
in the Aircraft Logbook but didn't see any mention of adding upper wing gap
seals.  Was this a factory option? 


   
ReplyQuote
gtg15751 avatar
(@gtg15751)
Reputable Member
Joined: 14 years ago
Posts: 279
 
Attachments :

That's what we had on the PJ. Same method of attachment I described on our GL just material dif.
Sent from my BlackBerry 10 smartphone.
From: 'Wally Carroll' wally@carrollconcertinas.com [greatlakesbiplane]
Sent: Tuesday, August 23, 2016 09:48
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Upper wing gap seals

 

The new Waco version does not have seals although one of the other new
model owners has created his own using some kind of clear flexible rubber tape
(not duct tape but about the same width).  This is the white plane with
red trim that was parked in the aerobatic section at Oshkosh for those who might
have been to the show.  He said that he didn t notice a big difference from
the upper wing seals but he did something similar to seal the gaps between the
vertical stabilizer and rudder as well as between the elevators and horizontal
stabilizers, which he says he definitely notices improvements to control
effectiveness.
 
From: mailto:greatlakesbiplane@yahoogroups.com
Sent: Monday, August 22, 2016 10:03 PM
To: mailto:greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Upper wing gap
seals
 
 

Mine
are "v"ed to the trailing edge contour with hole in centre reinforced then the
flat other end is nutplated for 10/32 riveted to it; a long, maybe 4-5 " 
10/32 screw pulls them together. 
Sent
from my BlackBerry 10 smartphone.
From: 'Mike Danielle' mikeda@centurylink.net
[greatlakesbiplane]
Sent: Monday, August 22, 2016 21:27
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane] Upper wing gap
seals
 
 

There s a couple
pictures of Bobby Croll s lakes on my Oregon Lakes album.  His factory
bird was fitted with exceptionally nice upper wing gap seals.  Kinda hard
to see.  I may have a few close-ups somewhere.  If I find them I ll
post.  Not sure if Bobby in on this group.  If you re here Bobby, can
you share?

Ranger
Mike

From:
greatlakesbiplane@yahoogroups.com [mailto:greatlakesbiplane@yahoogroups.com]
Sent: Monday, August 22, 2016 3:45 PM
To:
greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane]
Upper wing gap seals

 

Would you mind posting pictures of your gap seals? 

Regards,

John Duncan

Warner Engines

Great Lakes Aircraft


To: greatlakesbiplane@yahoogroups.com
From:
greatlakesbiplane@yahoogroups.com
Date:
Mon, 22 Aug 2016 15:20:00 -0700
Subject: [greatlakesbiplane] Upper wing gap
seals

 

I took some aerobatic lessons with Chandler Air Service in the Great
Lakes.  I noticed that all 3 of their planes had gaps between the outer
upper wings and the center upper wing.  The instructor told me that the
planes were made that way.  Our Great Lakes (1976, same year) has gap seals
in that area.  Does anyone know the benefit of having or not having upper
wing gap seals?  Which way did they come from the factory?  I looked
in the Aircraft Logbook but didn't see any mention of adding upper wing gap
seals.  Was this a factory option? 


   
ReplyQuote
b2brown2001 avatar
(@b2brown2001)
Active Member
Joined: 9 years ago
Posts: 6
Topic starter  
Attachments :

G
Greal Lakes wing gap seal 1
Greal Lakes wing gap seal 4
Here are some pictures of the upper wing gap seals on our plane.  (Yes, I know there is a screw missing on the lower leading edge.)
Brian Brown
1976 Great Lakes
6220L
This post was modified 4 years ago by John Hofmann

   
ReplyQuote
John Hofmann avatar
(@johnhofmann)
Member Admin
Joined: 4 years ago
Posts: 7241
 
Hey Brian, Gap seal weren't part of the production run for s/n 1010 (circa 1985). s/n 1010 was 1of 3 built in Claremont NH. It might have been an option or special request when and where your ship was built?

Be the wing, Bill

   
ReplyQuote
yalemosk avatar
(@yalemosk)
Eminent Member
Joined: 14 years ago
Posts: 48
 

How do you open the attachments? I clicked on the blue
"Attachments(s)" but nothing happens.
 
In a message dated 8/23/2016 11:06:45 A.M. Eastern Daylight Time,
greatlakesbiplane@yahoogroups.com writes:

[Attachment(s) from
gtg15751@yahoo.com included below]

That's
what we had on the PJ. Same method of attachment I described on our GL just
material dif.
Sent from my BlackBerry 10 smartphone.
From: 'Wally Carroll' wally@carrollconcertinas.com
[greatlakesbiplane]
Sent: Tuesday, August 23, 2016 09:48
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Upper wing gap
seals

 

The new Waco version does not have seals although one of the other new
model owners has created his own using some kind of clear flexible rubber
tape (not duct tape but about the same width).  This is the white plane
with red trim that was parked in the aerobatic section at Oshkosh for those
who might have been to the show.  He said that he didn t notice a big
difference from the upper wing seals but he did something similar to seal the
gaps between the vertical stabilizer and rudder as well as between the
elevators and horizontal stabilizers, which he says he definitely notices
improvements to control effectiveness.
 
From: mailto:greatlakesbiplane@yahoogroups.com
Sent: Monday, August 22, 2016 10:03 PM
To: mailto:greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Upper wing gap
seals
 
 

Mine
are "v"ed to the trailing edge contour with hole in centre reinforced then the
flat other end is nutplated for 10/32 riveted to it; a long, maybe 4-5 " 
10/32 screw pulls them together. 
Sent
from my BlackBerry 10 smartphone.
From: 'Mike Danielle' mikeda@centurylink.net
[greatlakesbiplane]
Sent: Monday, August 22, 2016 21:27
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane] Upper wing gap
seals
 
 

There s a couple
pictures of Bobby Croll s lakes on my Oregon Lakes album.  His factory
bird was fitted with exceptionally nice upper wing gap seals.  Kinda hard
to see.  I may have a few close-ups somewhere.  If I find them I ll
post.  Not sure if Bobby in on this group.  If you re here Bobby,
can you share?

Ranger
Mike

From:
greatlakesbiplane@yahoogroups.com [mailto:greatlakesbiplane@yahoogroups.com]

Sent: Monday, August 22, 2016 3:45 PM
To:
greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane]
Upper wing gap seals

 

Would you mind posting pictures of your gap seals? 

Regards,

John Duncan

Warner Engines

Great Lakes Aircraft


To: greatlakesbiplane@yahoogroups.com
From:
greatlakesbiplane@yahoogroups.com
Date:
Mon, 22 Aug 2016 15:20:00 -0700
Subject: [greatlakesbiplane] Upper wing gap
seals

 

I took some aerobatic lessons with Chandler Air Service in the Great
Lakes.  I noticed that all 3 of their planes had gaps between the outer
upper wings and the center upper wing.  The instructor told me that the
planes were made that way.  Our Great Lakes (1976, same year) has gap
seals in that area.  Does anyone know the benefit of having or not having
upper wing gap seals?  Which way did they come from the factory?  I
looked in the Aircraft Logbook but didn't see any mention of adding upper wing
gap seals.  Was this a factory option? 


   
ReplyQuote
gtg15751 avatar
(@gtg15751)
Reputable Member
Joined: 14 years ago
Posts: 279
 
Go to the yahoo group web site click on the PJ(grey& Blue one with radial engine & enlarge it to see leading edge ctr sect upper wing panal
Sent from my BlackBerry 10 smartphone.
From: moskco@aol.com [greatlakesbiplane]
Sent: Wednesday, August 24, 2016 18:02
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Upper wing gap seals

 


How do you open the attachments? I clicked on the blue
"Attachments(s)" but nothing happens.

 
In a message dated 8/23/2016 11:06:45 A.M. Eastern Daylight Time,
greatlakesbiplane@yahoogroups.com writes:

[Attachment(s) from
gtg15751@yahoo.com included below]

That's
what we had on the PJ. Same method of attachment I described on our GL just
material dif.
Sent from my BlackBerry 10 smartphone.
From: 'Wally Carroll' wally@carrollconcertinas.com
[greatlakesbiplane]
Sent: Tuesday, August 23, 2016 09:48
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Upper wing gap
seals

 

The new Waco version does not have seals although one of the other new
model owners has created his own using some kind of clear flexible rubber
tape (not duct tape but about the same width).  This is the white plane
with red trim that was parked in the aerobatic section at Oshkosh for those
who might have been to the show.  He said that he didn t notice a big
difference from the upper wing seals but he did something similar to seal the
gaps between the vertical stabilizer and rudder as well as between the
elevators and horizontal stabilizers, which he says he definitely notices
improvements to control effectiveness.
 
From: mailto:greatlakesbiplane@yahoogroups.com
Sent: Monday, August 22, 2016 10:03 PM
To: mailto:greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Upper wing gap
seals
 
 

Mine
are "v"ed to the trailing edge contour with hole in centre reinforced then the
flat other end is nutplated for 10/32 riveted to it; a long, maybe 4-5 " 
10/32 screw pulls them together. 
Sent
from my BlackBerry 10 smartphone.
From: 'Mike Danielle' mikeda@centurylink.net
[greatlakesbiplane]
Sent: Monday, August 22, 2016 21:27
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane] Upper wing gap
seals
 
 

There s a couple
pictures of Bobby Croll s lakes on my Oregon Lakes album.  His factory
bird was fitted with exceptionally nice upper wing gap seals.  Kinda hard
to see.  I may have a few close-ups somewhere.  If I find them I ll
post.  Not sure if Bobby in on this group.  If you re here Bobby,
can you share?

Ranger
Mike

From:
greatlakesbiplane@yahoogroups.com [mailto:greatlakesbiplane@yahoogroups.com]

Sent: Monday, August 22, 2016 3:45 PM
To:
greatlakesbiplane@yahoogroups.com
Subject: RE: [greatlakesbiplane]
Upper wing gap seals

 

Would you mind posting pictures of your gap seals? 

Regards,

John Duncan

Warner Engines

Great Lakes Aircraft


To: greatlakesbiplane@yahoogroups.com
From:
greatlakesbiplane@yahoogroups.com
Date:
Mon, 22 Aug 2016 15:20:00 -0700
Subject: [greatlakesbiplane] Upper wing gap
seals

 

I took some aerobatic lessons with Chandler Air Service in the Great
Lakes.  I noticed that all 3 of their planes had gaps between the outer
upper wings and the center upper wing.  The instructor told me that the
planes were made that way.  Our Great Lakes (1976, same year) has gap
seals in that area.  Does anyone know the benefit of having or not having
upper wing gap seals?  Which way did they come from the factory?  I
looked in the Aircraft Logbook but didn't see any mention of adding upper wing
gap seals.  Was this a factory option? 


   
ReplyQuote
John Hofmann avatar
(@johnhofmann)
Member Admin
Joined: 4 years ago
Posts: 7241
 
Well Brian the obvious question is what do the gap seals do for you. What kind of airspeed are you getting at what power setting. 
     ----Red GL in N. FLA----

Sent from my iPhone

On Aug 24, 2016, at 00:32, b2brown@adelphia.net [greatlakesbiplane] <greatlakesbiplane@yahoogroups.com> wrote:

 

Here are some pictures of the upper wing gap seals on our plane.  (Yes, I know there is a screw missing on the lower leading edge.)
Brian Brown
1976 Great Lakes
6220L

   
ReplyQuote
gtg15751 avatar
(@gtg15751)
Reputable Member
Joined: 14 years ago
Posts: 279
 
It makes it look sleeker, sexier, art deco. Nothing to do with reality.
Sent from my BlackBerry 10 smartphone.
From: Jeff Edwards jeffed6161@hotmail.com [greatlakesbiplane]
Sent: Wednesday, August 24, 2016 19:59
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Re: Upper wing gap seals

 

Well Brian the obvious question is what do the gap seals do for you. What kind of airspeed are you getting at what power setting. 
     ----Red GL in N. FLA----

Sent from my iPhone

On Aug 24, 2016, at 00:32, b2brown@adelphia.net [greatlakesbiplane] <greatlakesbiplane@yahoogroups.com> wrote:

 

Here are some pictures of the upper wing gap seals on our plane.  (Yes, I know there is a screw missing on the lower leading edge.)
Brian Brown
1976 Great Lakes
6220L


   
ReplyQuote
Joe Preston avatar
(@joe-preston)
Noble Member
Joined: 18 years ago
Posts: 1143
 
They sound like great reasons to me...
JP

Sent from my iPad Mini

On Aug 24, 2016, at 21:51, gtg15751@yahoo.com [greatlakesbiplane] <greatlakesbiplane@yahoogroups.com> wrote:

 

It makes it look sleeker, sexier, art deco. Nothing to do with reality.
Sent from my BlackBerry 10 smartphone.
From: Jeff Edwards jeffed6161@hotmail.com [greatlakesbiplane]
Sent: Wednesday, August 24, 2016 19:59
To: greatlakesbiplane@yahoogroups.com
Reply To: greatlakesbiplane@yahoogroups.com
Subject: Re: [greatlakesbiplane] Re: Upper wing gap seals

 

Well Brian the obvious question is what do the gap seals do for you. What kind of airspeed are you getting at what power setting. 
     ----Red GL in N. FLA----

Sent from my iPhone

On Aug 24, 2016, at 00:32, b2brown@adelphia.net [greatlakesbiplane] <greatlakesbiplane@yahoogroups.com> wrote:

 

Here are some pictures of the upper wing gap seals on our plane.  (Yes, I know there is a screw missing on the lower leading edge.)
Brian Brown
1976 Great Lakes
6220L


   
ReplyQuote
b2brown2001 avatar
(@b2brown2001)
Active Member
Joined: 9 years ago
Posts: 6
Topic starter  
Well, last week I saw 190 KTAS at 17000' at 30.5MP and 16.5 GPH--oh wait, that was in a turbocharged Cirrus  To be honest, I usually arrive at my "destination" as soon as I strap into the Great Lakes and really don't care about airspeed except for the entry speed for aerobatics.  I've flown 5 different Great Lakes, some with and some without upper wing gap seals and really can't tell the difference, especially when upside down.  I do like being able to inspect the wing attachments preflight. 

My plane is a 1976 S/N 0732 with the gap seals and S/N 0733 doesn't have them so I wondered it was a factory option.

Brian Brown
N6220L 1976 Great Lakes


   
ReplyQuote
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