Fairchild Club Forum

'Frank,  I know of other aircraft that had laminated spars during the war due to shortage. Seen up to 16 splices on one spar.  The Steen Aero are using plywood which is a little different.  JST  From: fairchildclub@yahoogroups.com
Sent: Friday, May 3, 2019 2:00 AM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars    My  Argus (UC61K) S/N 43-15025 has laminated spars - perhaps it was a military requirement?  Frank Cox    On Fri, 3 May 2019 at 08:06, Cyle Nienaber cnienaber@hotmail.com [fairchildclub] wrote:

  I am also interested in the Spar’s.   We are rebuilding two 24’s and the wing spars May be a bit tired.   Has anyone had success with a laminated spar?  Regards  Cyle Sent from my iPhone
On 03 May 2019, at 06:16, jamietreat397@gmail.com [fairchildclub] wrote:  I stand corrected. Per the Mil T.O. 01-115CA-3 Page 9, parg 3. Spars are of routed design and formed of Grade A spruce to finished dimensions. I believe the new wood kits were Doug Fir.  JST From: fairchildclub@yahoogroups.com
Sent: Thursday, May 2, 2019 10:07 PM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars   Try: john@bigskystearman..comSent from my iPad
On May 2, 2019, at 7:48 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:  I dont know, they were original spars i think but I have no idea which wood.  I would assume spruce. On Thursday, May 2, 2019, 7:18:56 PM CDT, 'Jan P. Hedberg' jhed9253@aol.com [fairchildclub] wrote:     Spruce or fir? Sent from my iPad
On May 2, 2019, at 3:44 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:  I have six wing spars, 3 leading edge and 3 trailing edge spars for my 1940 fairchild 24w40.  I dont know if they are good.  I had a local IA look at them and he said one was, one was not and the other 4 he could not tell.  He said he is not as experienced as he would like to be with wood but recommended I start with new ones.   I looked at aircraft spruce and they dont appear to supply the width that I need for one of the spars in 1.5 inch thickness.  Does anyone know any other suppliers of spar stock or is there an STC to allow a laminated spar.  Advice?  Comments? all are welcome. Regards,MIke T

'

'Hi guys
I am rebuilding a UC61K in Cape Town South Africa and I am using the original spars and replacing ribs. The original spars were triple laminate spruce and routed. Since as the guys say spruce is very difficult to find, especially down here, I am using good, straight, close grained douglas fir for the rest. A marginal weight penalty but it is stronger.
Cheers
Stuart

On Fri, 3 May 2019 at 14:43, jamietreat397@gmail.com [fairchildclub] wrote:
 
Frank, I know of other aircraft that had laminated spars during the war due to shortage. Seen up to 16 splices on one spar. The Steen Aero are using plywood which is a little different. JST From: fairchildclub@yahoogroups.com
Sent: Friday, May 3, 2019 2:00 AM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars   My  Argus (UC61K) S/N 43-15025 has laminated spars - perhaps it was a military requirement? Frank Cox  On Fri, 3 May 2019 at 08:06, Cyle Nienaber cnienaber@hotmail..com [fairchildclub] wrote:  I am also interested in the Spar’s.   We are rebuilding two 24’s and the wing spars May be a bit tired.  Has anyone had success with a laminated spar? Regards Cyle Sent from my iPhone
On 03 May 2019, at 06:16, jamietreat397@gmail.com [fairchildclub] wrote:  I stand corrected. Per the Mil T.O. 01-115CA-3 Page 9, parg 3. Spars are of routed design and formed of Grade A spruce to finished dimensions. I believe the new wood kits were Doug Fir.  JST From: fairchildclub@yahoogroups.com
Sent: Thursday, May 2, 2019 10:07 PM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars   Try: john@bigskystearman..comSent from my iPad
On May 2, 2019, at 7:48 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:  I dont know, they were original spars i think but I have no idea which wood.  I would assume spruce. On Thursday, May 2, 2019, 7:18:56 PM CDT, 'Jan P. Hedberg' jhed9253@aol.com [fairchildclub] wrote:     Spruce or fir? Sent from my iPad
On May 2, 2019, at 3:44 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:  I have six wing spars, 3 leading edge and 3 trailing edge spars for my 1940 fairchild 24w40.  I dont know if they are good.  I had a local IA look at them and he said one was, one was not and the other 4 he could not tell.  He said he is not as experienced as he would like to be with wood but recommended I start with new ones.   I looked at aircraft spruce and they dont appear to supply the width that I need for one of the spars in 1.5 inch thickness.  Does anyone know any other suppliers of spar stock or is there an STC to allow a laminated spar.  Advice?  Comments? all are welcome. Regards,MIke T

--
Kind regards
Stuart Burgess
Cell: 0711998012Email: stuart@burgess.org.za '

' Look in your AC 43.13-1b   Chapter 1-43.  Replacing Solid-Type Spars With Laminated-Type Spars.
David

On 5/3/19 6:09 AM, Stuart Burgess stuart@burgess.org.za [fairchildclub] wrote:

  Hi guys
I am rebuilding a UC61K in Cape Town South Africa and I am using the original spars and replacing ribs. The original spars were triple laminate spruce and routed. Since as the guys say spruce is very difficult to find, especially down here, I am using good, straight, close grained douglas fir for the rest. A marginal weight penalty but it is stronger.
Cheers
Stuart
On Fri, 3 May 2019 at 14:43, jamietreat397@gmail.com [fairchildclub] wrote:
  Frank,   I know of other aircraft that had laminated spars during the war due to shortage.. Seen up to 16 splices on one spar.   The Steen Aero are using plywood which is a little different.   JST   From: fairchildclub@yahoogroups.com
Sent: Friday, May 3, 2019 2:00 AM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     My  Argus (UC61K) S/N 43-15025 has laminated spars - perhaps it was a military requirement?   Frank Cox     On Fri, 3 May 2019 at 08:06, Cyle Nienaber cnienaber@hotmail..com [fairchildclub] wrote:   I am also interested in the Spar’s.    We are rebuilding two 24’s and the wing spars May be a bit tired.    Has anyone had success with a laminated spar?   Regards   Cyle  Sent from my iPhone
On 03 May 2019, at 06:16, jamietreat397@gmail.com [fairchildclub] wrote:   I stand corrected. Per the Mil T.O. 01-115CA-3 Page 9, parg 3. Spars are of routed design and formed of Grade A spruce to finished dimensions.   I believe the new wood kits were Doug Fir.     JST   From: fairchildclub@yahoogroups.com
Sent: Thursday, May 2, 2019 10:07 PM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     Try: john@bigskystearman..com Sent from my iPad
On May 2, 2019, at 7:48 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I dont know, they were original spars i think but I have no idea which wood.  I would assume spruce.   On Thursday, May 2, 2019, 7:18:56 PM CDT, 'Jan P. Hedberg' jhed9253@aol.com [fairchildclub] wrote:       Spruce or fir?   Sent from my iPad
On May 2, 2019, at 3:44 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I have six wing spars, 3 leading edge and 3 trailing edge spars for my 1940 fairchild 24w40.  I dont know if they are good.  I had a local IA look at them and he said one was, one was not and the other 4 he could not tell.  He said he is not as experienced as he would like to be with wood but recommended I start with new ones.   I looked at aircraft spruce and they dont appear to supply the width that I need for one of the spars in 1.5 inch thickness.  Does anyone know any other suppliers of spar stock or is there an STC to allow a laminated spar.  Advice?  Comments? all are welcome.   Regards, MIke T

--
Kind regards
Stuart Burgess
Cell: 0711998012 Email: stuart@burgess.org.za

'

' Thank you,  I will do that

On Friday, May 3, 2019, 3:14:20 PM CDT, Ranchaero Wing Shop david@ranchaerowingshop.com [fairchildclub] wrote:

 
Look in your AC 43.13-1b   Chapter 1-43.  Replacing Solid-Type Spars With Laminated-Type Spars.
David

On 5/3/19 6:09 AM, Stuart Burgess stuart@burgess.org.za [fairchildclub] wrote:
  Hi guys
I am rebuilding a UC61K in Cape Town South Africa and I am using the original spars and replacing ribs. The original spars were triple laminate spruce and routed. Since as the guys say spruce is very difficult to find, especially down here, I am using good, straight, close grained douglas fir for the rest. A marginal weight penalty but it is stronger.
Cheers
Stuart
On Fri, 3 May 2019 at 14:43, jamietreat397@gmail.com [fairchildclub] wrote:
  Frank,   I know of other aircraft that had laminated spars during the war due to shortage.. Seen up to 16 splices on one spar.   The Steen Aero are using plywood which is a little different.   JST   From: fairchildclub@yahoogroups.com
Sent: Friday, May 3, 2019 2:00 AM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     My  Argus (UC61K) S/N 43-15025 has laminated spars - perhaps it was a military requirement?   Frank Cox     On Fri, 3 May 2019 at 08:06, Cyle Nienaber cnienaber@hotmail..com [fairchildclub] wrote:   I am also interested in the Spar’s.    We are rebuilding two 24’s and the wing spars May be a bit tired.    Has anyone had success with a laminated spar?   Regards   Cyle  Sent from my iPhone
On 03 May 2019, at 06:16, jamietreat397@gmail.com [fairchildclub] wrote:   I stand corrected. Per the Mil T.O. 01-115CA-3 Page 9, parg 3. Spars are of routed design and formed of Grade A spruce to finished dimensions.   I believe the new wood kits were Doug Fir.     JST   From: fairchildclub@yahoogroups.com
Sent: Thursday, May 2, 2019 10:07 PM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     Try: john@bigskystearman..com Sent from my iPad
On May 2, 2019, at 7:48 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I dont know, they were original spars i think but I have no idea which wood.  I would assume spruce.   On Thursday, May 2, 2019, 7:18:56 PM CDT, 'Jan P. Hedberg' jhed9253@aol.com [fairchildclub] wrote:       Spruce or fir?   Sent from my iPad
On May 2, 2019, at 3:44 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I have six wing spars, 3 leading edge and 3 trailing edge spars for my 1940 fairchild 24w40.  I dont know if they are good.  I had a local IA look at them and he said one was, one was not and the other 4 he could not tell.  He said he is not as experienced as he would like to be with wood but recommended I start with new ones.   I looked at aircraft spruce and they dont appear to supply the width that I need for one of the spars in 1.5 inch thickness.  Does anyone know any other suppliers of spar stock or is there an STC to allow a laminated spar.  Advice?  Comments? all are welcome.   Regards, MIke T

--
Kind regards
Stuart Burgess
Cell: 0711998012 Email: stuart@burgess.org.za

'

'     I rebuilt my wings many years ago, and one was pre-war and the other was UC-61.  The UC-61 wing spars were laminated and I believe that there was 7 layers and the thickness was milled down to 1.5".  At that time, even one piece spars weren't available, but 2 ply was.       I noticed one thing that was odd, the bevel on the top of the spars was the same, front and rear.  The rear didn't need to be as great as the front, but the same for both originally seemed OK in the 40's.  I didn't notice it until I was well into the assembly process.     When drilling the holes for the fittings in the spars, don't use short drill bits.  Use bits as long as you can get, 6-8".   With the old spar laid over the new material, short bits will wander.  The bushings won't align with especially the wing root fitting and or the lift strut attachment fittings if you use short drill bits.    I have a set of UC-61 and a set of pre-war 24 spars that are only good as patterns.    I am looking forward to flying later this year.  The wing rigging is really close.   I didn't even both with trim tabs because the wings are within 0.05 degrees of each other.  When I got to less than 0.1 degrees of each other, it was time to quit.  At that rate, a gallon of gas difference on either side would throw it out of balance.
Bob   (Medical issues slowing me down)

On ?Friday?, ?May? ?3?, ?2019? ?04?:?20?:?41? ?PM? ?EDT, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:

 
Thank you,  I will do that

On Friday, May 3, 2019, 3:14:20 PM CDT, Ranchaero Wing Shop david@ranchaerowingshop.com [fairchildclub] wrote:

 
Look in your AC 43.13-1b   Chapter 1-43.  Replacing Solid-Type Spars With Laminated-Type Spars.
David

On 5/3/19 6:09 AM, Stuart Burgess stuart@burgess.org.za [fairchildclub] wrote:
  Hi guys
I am rebuilding a UC61K in Cape Town South Africa and I am using the original spars and replacing ribs. The original spars were triple laminate spruce and routed. Since as the guys say spruce is very difficult to find, especially down here, I am using good, straight, close grained douglas fir for the rest. A marginal weight penalty but it is stronger.
Cheers
Stuart
On Fri, 3 May 2019 at 14:43, jamietreat397@gmail..com [fairchildclub] wrote:
  Frank,   I know of other aircraft that had laminated spars during the war due to shortage.. Seen up to 16 splices on one spar.   The Steen Aero are using plywood which is a little different.   JST   From: fairchildclub@yahoogroups.com
Sent: Friday, May 3, 2019 2:00 AM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     My  Argus (UC61K) S/N 43-15025 has laminated spars - perhaps it was a military requirement?   Frank Cox     On Fri, 3 May 2019 at 08:06, Cyle Nienaber cnienaber@hotmail..com [fairchildclub] wrote:   I am also interested in the Spar’s.    We are rebuilding two 24’s and the wing spars May be a bit tired.    Has anyone had success with a laminated spar?   Regards   Cyle  Sent from my iPhone
On 03 May 2019, at 06:16, jamietreat397@gmail.com [fairchildclub] wrote:   I stand corrected. Per the Mil T.O. 01-115CA-3 Page 9, parg 3. Spars are of routed design and formed of Grade A spruce to finished dimensions.   I believe the new wood kits were Doug Fir.     JST   From: fairchildclub@yahoogroups.com
Sent: Thursday, May 2, 2019 10:07 PM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     Try: john@bigskystearman..com Sent from my iPad
On May 2, 2019, at 7:48 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I dont know, they were original spars i think but I have no idea which wood.  I would assume spruce.   On Thursday, May 2, 2019, 7:18:56 PM CDT, 'Jan P. Hedberg' jhed9253@aol.com [fairchildclub] wrote:       Spruce or fir?   Sent from my iPad
On May 2, 2019, at 3:44 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I have six wing spars, 3 leading edge and 3 trailing edge spars for my 1940 fairchild 24w40.  I dont know if they are good.  I had a local IA look at them and he said one was, one was not and the other 4 he could not tell.  He said he is not as experienced as he would like to be with wood but recommended I start with new ones.   I looked at aircraft spruce and they dont appear to supply the width that I need for one of the spars in 1.5 inch thickness.  Does anyone know any other suppliers of spar stock or is there an STC to allow a laminated spar.  Advice?  Comments? all are welcome.   Regards, MIke T

--
Kind regards
Stuart Burgess
Cell: 0711998012 Email: stuart@burgess.org.za

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' Thank you for the information Bob.  Sorry you are having medical issues.  I have them myself.   FAA makes me feel like a circus performer jumping through hoops every year when I renew my flight physical.
Regards,Mike T

On Sunday, May 5, 2019, 9:28:08 AM PDT, Robert Etter robertetter@ymail.com [fairchildclub] wrote:

 
    I rebuilt my wings many years ago, and one was pre-war and the other was UC-61.  The UC-61 wing spars were laminated and I believe that there was 7 layers and the thickness was milled down to 1.5".  At that time, even one piece spars weren't available, but 2 ply was.       I noticed one thing that was odd, the bevel on the top of the spars was the same, front and rear.  The rear didn't need to be as great as the front, but the same for both originally seemed OK in the 40's.  I didn't notice it until I was well into the assembly process.     When drilling the holes for the fittings in the spars, don't use short drill bits.  Use bits as long as you can get, 6-8".   With the old spar laid over the new material, short bits will wander.  The bushings won't align with especially the wing root fitting and or the lift strut attachment fittings if you use short drill bits.    I have a set of UC-61 and a set of pre-war 24 spars that are only good as patterns.    I am looking forward to flying later this year.  The wing rigging is really close.   I didn't even both with trim tabs because the wings are within 0.05 degrees of each other.  When I got to less than 0.1 degrees of each other, it was time to quit.  At that rate, a gallon of gas difference on either side would throw it out of balance.
Bob   (Medical issues slowing me down)
On ?Friday?, ?May? ?3?, ?2019? ?04?:?20?:?41? ?PM? ?EDT, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:

 
Thank you,  I will do that

On Friday, May 3, 2019, 3:14:20 PM CDT, Ranchaero Wing Shop david@ranchaerowingshop.com [fairchildclub] wrote:

 
Look in your AC 43.13-1b   Chapter 1-43.  Replacing Solid-Type Spars With Laminated-Type Spars.
David

On 5/3/19 6:09 AM, Stuart Burgess stuart@burgess.org.za [fairchildclub] wrote:
  Hi guys
I am rebuilding a UC61K in Cape Town South Africa and I am using the original spars and replacing ribs. The original spars were triple laminate spruce and routed. Since as the guys say spruce is very difficult to find, especially down here, I am using good, straight, close grained douglas fir for the rest. A marginal weight penalty but it is stronger.
Cheers
Stuart
On Fri, 3 May 2019 at 14:43, jamietreat397@gmail..com [fairchildclub] wrote:
  Frank,   I know of other aircraft that had laminated spars during the war due to shortage.. Seen up to 16 splices on one spar.   The Steen Aero are using plywood which is a little different.   JST   From: fairchildclub@yahoogroups.com
Sent: Friday, May 3, 2019 2:00 AM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     My  Argus (UC61K) S/N 43-15025 has laminated spars - perhaps it was a military requirement?   Frank Cox     On Fri, 3 May 2019 at 08:06, Cyle Nienaber cnienaber@hotmail..com [fairchildclub] wrote:   I am also interested in the Spar’s.    We are rebuilding two 24’s and the wing spars May be a bit tired.    Has anyone had success with a laminated spar?   Regards   Cyle  Sent from my iPhone
On 03 May 2019, at 06:16, jamietreat397@gmail.com [fairchildclub] wrote:   I stand corrected. Per the Mil T.O. 01-115CA-3 Page 9, parg 3. Spars are of routed design and formed of Grade A spruce to finished dimensions.   I believe the new wood kits were Doug Fir.     JST   From: fairchildclub@yahoogroups.com
Sent: Thursday, May 2, 2019 10:07 PM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     Try: john@bigskystearman..com Sent from my iPad
On May 2, 2019, at 7:48 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I dont know, they were original spars i think but I have no idea which wood.  I would assume spruce.   On Thursday, May 2, 2019, 7:18:56 PM CDT, 'Jan P. Hedberg' jhed9253@aol.com [fairchildclub] wrote:       Spruce or fir?   Sent from my iPad
On May 2, 2019, at 3:44 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I have six wing spars, 3 leading edge and 3 trailing edge spars for my 1940 fairchild 24w40.  I dont know if they are good.  I had a local IA look at them and he said one was, one was not and the other 4 he could not tell.  He said he is not as experienced as he would like to be with wood but recommended I start with new ones.   I looked at aircraft spruce and they dont appear to supply the width that I need for one of the spars in 1.5 inch thickness.  Does anyone know any other suppliers of spar stock or is there an STC to allow a laminated spar.  Advice?  Comments? all are welcome.   Regards, MIke T

--
Kind regards
Stuart Burgess
Cell: 0711998012 Email: stuart@burgess.org.za

'

' There is one little thing that I did on installing the trailing edge material that worked out well.  OE they used soft rivets through the trailing edge material and the aft end of the ribs.  I assume they spent quite a bit of time getting the rounded underside of the rivets.  I never could get it right.  After drilling the hole for the proper size of the rivet through the trailing edge and the rib, I took the trailing edge material off and set it aside.  I enlarged the hole in the rib and added a small sleeve of stainless steel brake line into the hole and ground it flush to the top and bottom face of the rib.  I had to touch up the varnish before I put the TE back in place.  Then  used a hand held rivet squeezer to finish the job.  I only cracked one rib tip.  Then I though of a better way to do it.     In the flap well, to hold the fabric up evenly.   I used 1/4" stainless Wrap--Lock with counter sunk holes at regular interval with flat head stainless steel screws.   If you use Wrap-Lock, make sure that you put the sharp edge away from the fabric.
Bob

On ?Sunday?, ?May? ?5?, ?2019? ?12?:?57?:?29? ?PM? ?EDT, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:

 
Thank you for the information Bob.  Sorry you are having medical issues.  I have them myself.   FAA makes me feel like a circus performer jumping through hoops every year when I renew my flight physical.
Regards,Mike T

On Sunday, May 5, 2019, 9:28:08 AM PDT, Robert Etter robertetter@ymail.com [fairchildclub] wrote:

 
    I rebuilt my wings many years ago, and one was pre-war and the other was UC-61.  The UC-61 wing spars were laminated and I believe that there was 7 layers and the thickness was milled down to 1.5".  At that time, even one piece spars weren't available, but 2 ply was.       I noticed one thing that was odd, the bevel on the top of the spars was the same, front and rear.  The rear didn't need to be as great as the front, but the same for both originally seemed OK in the 40's.  I didn't notice it until I was well into the assembly process.     When drilling the holes for the fittings in the spars, don't use short drill bits.  Use bits as long as you can get, 6-8".   With the old spar laid over the new material, short bits will wander.  The bushings won't align with especially the wing root fitting and or the lift strut attachment fittings if you use short drill bits.    I have a set of UC-61 and a set of pre-war 24 spars that are only good as patterns.    I am looking forward to flying later this year.  The wing rigging is really close.   I didn't even both with trim tabs because the wings are within 0.05 degrees of each other.  When I got to less than 0.1 degrees of each other, it was time to quit.  At that rate, a gallon of gas difference on either side would throw it out of balance.
Bob   (Medical issues slowing me down)
On ?Friday?, ?May? ?3?, ?2019? ?04?:?20?:?41? ?PM? ?EDT, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:

 
Thank you,  I will do that

On Friday, May 3, 2019, 3:14:20 PM CDT, Ranchaero Wing Shop david@ranchaerowingshop.com [fairchildclub] wrote:

 
Look in your AC 43.13-1b   Chapter 1-43.  Replacing Solid-Type Spars With Laminated-Type Spars.
David

On 5/3/19 6:09 AM, Stuart Burgess stuart@burgess.org.za [fairchildclub] wrote:
  Hi guys
I am rebuilding a UC61K in Cape Town South Africa and I am using the original spars and replacing ribs. The original spars were triple laminate spruce and routed. Since as the guys say spruce is very difficult to find, especially down here, I am using good, straight, close grained douglas fir for the rest. A marginal weight penalty but it is stronger.
Cheers
Stuart
On Fri, 3 May 2019 at 14:43, jamietreat397@gmail...com [fairchildclub] wrote:
  Frank,   I know of other aircraft that had laminated spars during the war due to shortage.. Seen up to 16 splices on one spar.   The Steen Aero are using plywood which is a little different.   JST   From: fairchildclub@yahoogroups.com
Sent: Friday, May 3, 2019 2:00 AM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     My  Argus (UC61K) S/N 43-15025 has laminated spars - perhaps it was a military requirement?   Frank Cox     On Fri, 3 May 2019 at 08:06, Cyle Nienaber cnienaber@hotmail..com [fairchildclub] wrote:   I am also interested in the Spar’s.    We are rebuilding two 24’s and the wing spars May be a bit tired.    Has anyone had success with a laminated spar?   Regards   Cyle  Sent from my iPhone
On 03 May 2019, at 06:16, jamietreat397@gmail.com [fairchildclub] wrote:   I stand corrected. Per the Mil T.O. 01-115CA-3 Page 9, parg 3. Spars are of routed design and formed of Grade A spruce to finished dimensions.   I believe the new wood kits were Doug Fir.     JST   From: fairchildclub@yahoogroups.com
Sent: Thursday, May 2, 2019 10:07 PM
To: fairchildclub@yahoogroups.com
Subject: Re: [fairchildclub] Wing spars     Try: john@bigskystearman..com Sent from my iPad
On May 2, 2019, at 7:48 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I dont know, they were original spars i think but I have no idea which wood.  I would assume spruce.   On Thursday, May 2, 2019, 7:18:56 PM CDT, 'Jan P. Hedberg' jhed9253@aol.com [fairchildclub] wrote:       Spruce or fir?   Sent from my iPad
On May 2, 2019, at 3:44 PM, Michael Thomas michael_thomas8@yahoo.com [fairchildclub] wrote:   I have six wing spars, 3 leading edge and 3 trailing edge spars for my 1940 fairchild 24w40.  I dont know if they are good.  I had a local IA look at them and he said one was, one was not and the other 4 he could not tell.  He said he is not as experienced as he would like to be with wood but recommended I start with new ones.   I looked at aircraft spruce and they dont appear to supply the width that I need for one of the spars in 1.5 inch thickness.  Does anyone know any other suppliers of spar stock or is there an STC to allow a laminated spar.  Advice?  Comments? all are welcome.   Regards, MIke T

--
Kind regards
Stuart Burgess
Cell: 0711998012 Email: stuart@burgess.org.za

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