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teamgrumman(at)yahoo.com
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 Posted: Sun Jun 24, 2012 5:03 pm Post subject: Spar diameter |
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What the diameter of the spar is at the wing attach point?
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BARRY CHECK 6
Joined: 15 Mar 2011
Posts: 738
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| Posted: Sun Jun 24, 2012 5:30 pm Post subject: Spar diameter |
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Gary:
I can give you that number tomorrow... From an AA5.
Barry
On Sun, Jun 24, 2012 at 9:03 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
[quote]What the diameter of the spar is at the wing attach point?
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bob.hodo(at)yahoo.com
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| Posted: Sun Jun 24, 2012 6:49 pm Post subject: Spar diameter |
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Gary, it looked to be between 6.6" and 6.7" so I measured the circumference and got exactly 20.9 inches. Divided by pi you get 6.65267662". My calipers only go to 6.25" so this measurement was done with a tape with markings in tenths of an inch instead of fractions.
If you like I can get the inside diameter with the calipers, then add the wall thickness twice, but I am thinking the above method is at least as accurate.
That is the outer circumference of a cheetah center spar. Since the wings on cheetahs and tigers are interchangeable, the OD should be the same number.
Bob Hodo
From: Gary Vogt <teamgrumman(at)yahoo.com>
To: Teamgrumman List <teamgrumman-list(at)matronics.com>
Sent: Sunday, June 24, 2012 8:03 PM
Subject: Spar diameter
What the diameter of the spar is at the wing attach point?
[quote]h-===================================
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teamgrumman(at)yahoo.com
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| Posted: Sun Jun 24, 2012 7:06 pm Post subject: Spar diameter |
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Barry, or ?
If you have a wing, I need:
1. the distance from the center of the spar to the leading edge of the airfoil.
2. the distance from the center of the spar to the aft edge of the aft spar (so, the end of the airfoil.) That would give the overall length plus the spar location.
3. overall height at the widest part of the airfoil
4. approximate distance from the highest point to the center of the spar
5. vertical location of the spar with respect to the bottom of the spar.
If you have a flap, I need:
1. overall height and length of the flap.
2. the distance from the center of the torque tube to the leading edge.
If you have an aileron, I need:
1. overall height and length of the aileron.
2. the distance from the center of the torque tube to the leading edge.
3. approximate location of the beveled trailing edge and its height and width.
Thanks in advance.
Gary
From: FLYaDIVE <flyadive(at)gmail.com>
To: teamgrumman-list(at)matronics.com
Sent: Sunday, June 24, 2012 6:30 PM
Subject: Re: Spar diameter
Gary:
I can give you that number tomorrow... From an AA5.
Barry
On Sun, Jun 24, 2012 at 9:03 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
| Quote: | What the diameter of the spar is at the wing attach point?
| Quote: |
st" target="_blank">http://www.matronics.com/Navigator?TeamGrumman-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
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[quote][b]
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teamgrumman(at)yahoo.com
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| Posted: Sun Jun 24, 2012 7:07 pm Post subject: Spar diameter |
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Thanks. I'll use 6.65 inches. That is close enough for what I'm doing.
Gary
From: Bob Hodo <bob.hodo(at)yahoo.com>
To: "teamgrumman-list(at)matronics.com" <teamgrumman-list(at)matronics.com>
Sent: Sunday, June 24, 2012 7:48 PM
Subject: Re: Spar diameter
Gary, it looked to be between 6.6" and 6.7" so I measured the circumference and got exactly 20.9 inches. Divided by pi you get 6.65267662". My calipers only go to 6.25" so this measurement was done with a tape with markings in tenths of an inch instead of fractions.
If you like I can get the inside diameter with the calipers, then add the wall thickness twice, but I am thinking the above method is at least as accurate.
That is the outer circumference of a cheetah center spar. Since the wings on cheetahs and tigers are interchangeable, the OD should be the same number.
Bob Hodo
From: Gary Vogt <teamgrumman(at)yahoo.com>
To: Teamgrumman List <teamgrumman-list(at)matronics.com>
Sent: Sunday, June 24, 2012 8:03 PM
Subject: Spar diameter
What the diameter of the spar is at the wing attach point?
| Quote: | h-===================================
http://www.matronics.com/Navigator?TeamGrumman-List |
[quote][b]
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teamgrumman(at)yahoo.com
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| Posted: Sun Jun 24, 2012 7:11 pm Post subject: Spar diameter |
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I'll use .300 as the wall thickness using a Tiger as a baseline.
So, inside diameter is 6.05 inches. Give or take.
From: Bob Hodo <bob.hodo(at)yahoo.com>
To: "teamgrumman-list(at)matronics.com" <teamgrumman-list(at)matronics.com>
Sent: Sunday, June 24, 2012 7:48 PM
Subject: Re: Spar diameter
Gary, it looked to be between 6.6" and 6.7" so I measured the circumference and got exactly 20.9 inches. Divided by pi you get 6.65267662". My calipers only go to 6.25" so this measurement was done with a tape with markings in tenths of an inch instead of fractions.
If you like I can get the inside diameter with the calipers, then add the wall thickness twice, but I am thinking the above method is at least as accurate.
That is the outer circumference of a cheetah center spar. Since the wings on cheetahs and tigers are interchangeable, the OD should be the same number.
Bob Hodo
From: Gary Vogt <teamgrumman(at)yahoo.com>
To: Teamgrumman List <teamgrumman-list(at)matronics.com>
Sent: Sunday, June 24, 2012 8:03 PM
Subject: Spar diameter
What the diameter of the spar is at the wing attach point?
| Quote: | h-===================================
http://www.matronics.com/Navigator?TeamGrumman-List |
[quote][b]
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BARRY CHECK 6
Joined: 15 Mar 2011
Posts: 738
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| Posted: Mon Jun 25, 2012 2:33 am Post subject: Spar diameter |
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Gary:
The wing is at one location while the flap and aerilon are at the AP. I will be going to the AP in a day or so. Can you wait?
Barry
On Sun, Jun 24, 2012 at 11:05 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
[quote] Barry, or ?
If you have a wing, I need:
1. the distance from the center of the spar to the leading edge of the airfoil.
2. the distance from the center of the spar to the aft edge of the aft spar (so, the end of the airfoil.) That would give the overall length plus the spar location.
3. overall height at the widest part of the airfoil
4. approximate distance from the highest point to the center of the spar
5. vertical location of the spar with respect to the bottom of the spar.
If you have a flap, I need:
1. overall height and length of the flap.
2. the distance from the center of the torque tube to the leading edge.
If you have an aileron, I need:
1. overall height and length of the aileron.
2. the distance from the center of the torque tube to the leading edge.
3. approximate location of the beveled trailing edge and its height and width.
Thanks in advance.
Gary
From: FLYaDIVE <flyadive(at)gmail.com (flyadive(at)gmail.com)>
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Sunday, June 24, 2012 6:30 PM
Subject: Re: TeamGrumman-List: Spar diameter
Gary:
I can give you that number tomorrow... From an AA5.
Barry
On Sun, Jun 24, 2012 at 9:03 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
| Quote: | What the diameter of the spar is at the wing attach point?
|
| Quote: |
st" target="_blank">http://www.matronics.com/Navigator?TeamGrumman-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
|
[b]
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bob.hodo(at)yahoo.com
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| Posted: Mon Jun 25, 2012 3:55 am Post subject: Spar diameter |
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This is the data from my original spar, an extra cheetah spar, and the tiger spar in my plane now:
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Original spar .255 to .260 wall thickness ………………………...………….46.10 lbsExtra AA5A spar .255 to .260 wall thickness ………………………………46.35 lbs
Tiger spar .305 to .310 wall thickness ……………………………………52.05 lbs
From: Gary Vogt <teamgrumman(at)yahoo.com>
To: "teamgrumman-list(at)matronics.com" <teamgrumman-list(at)matronics.com>
Sent: Sunday, June 24, 2012 10:09 PM
Subject: Re: Spar diameter
I'll use .300 as the wall thickness using a Tiger as a baseline.
So, inside diameter is 6.05 inches. Give or take.
From: Bob Hodo <bob.hodo(at)yahoo.com>
To: "teamgrumman-list(at)matronics.com" <teamgrumman-list(at)matronics.com>
Sent: Sunday, June 24, 2012 7:48 PM
Subject: Re: Spar diameter
Gary, it looked to be between 6.6" and 6.7" so I measured the circumference and got exactly 20.9 inches. Divided by pi you get 6.65267662". My calipers only go to 6.25" so this measurement was done with a tape with markings in tenths of an inch instead of fractions.
If you like I can get the inside diameter with the calipers, then add the wall thickness twice, but I am thinking the above method is at least as accurate.
That is the outer circumference of a cheetah center spar. Since the wings on cheetahs and tigers are interchangeable, the OD should be the same number.
Bob Hodo
From: Gary Vogt <teamgrumman(at)yahoo.com>
To: Teamgrumman List <teamgrumman-list(at)matronics.com>
Sent: Sunday, June 24, 2012 8:03 PM
Subject: Spar diameter
What the diameter of the spar is at the wing attach point?
| Quote: | h-===================================
http://www.matronics.com/Navigator?TeamGrumman-List
|
| Quote: | http://www.matronics.com/Navigato
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teamgrumman(at)yahoo.com
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| Posted: Tue Jun 26, 2012 12:18 am Post subject: Spar diameter |
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yep. No hurry.
From: FLYaDIVE <flyadive(at)gmail.com>
To: teamgrumman-list(at)matronics.com
Sent: Monday, June 25, 2012 3:33 AM
Subject: Re: Spar diameter
Gary:
The wing is at one location while the flap and aerilon are at the AP. I will be going to the AP in a day or so. Can you wait?
Barry
On Sun, Jun 24, 2012 at 11:05 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
| Quote: | Barry, or ?
If you have a wing, I need:
1. the distance from the center of the spar to the leading edge of the airfoil.
2. the distance from the center of the spar to the aft edge of the aft spar (so, the end of the airfoil.) That would give the overall length plus the spar location.
3. overall height at the widest part of the airfoil
4. approximate distance from the highest point to the center of the spar
5. vertical location of the spar with respect to the bottom of the spar.
If you have a flap, I need:
1. overall height and length of the flap.
2. the distance from the center of the torque tube to the leading edge.
If you have an aileron, I need:
1. overall height and length of the aileron.
2. the distance from the center of the torque tube to the leading edge.
3. approximate location of the beveled trailing edge and its height and width.
Thanks in advance.
Gary
From: FLYaDIVE <flyadive(at)gmail.com (flyadive(at)gmail.com)>
To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)
Sent: Sunday, June 24, 2012 6:30 PM
Subject: Re: Spar diameter
Gary:
I can give you that number tomorrow... From an AA5.
Barry
On Sun, Jun 24, 2012 at 9:03 PM, Gary Vogt <teamgrumman(at)yahoo.com (teamgrumman(at)yahoo.com)> wrote:
| Quote: | What the diameter of the spar is at the wing attach point?
|
| Quote: |
st" target="_blank">http://www.matronics.com/Navigator?TeamGrumman-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
|
|
[quote][b]
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http://www.matronics.com/Navigator?TeamGrumman-List |
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