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Cracked wheel fairing brackets

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i.r.m(at)btinternet.com
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Posted: Sat May 10, 2008 11:16 am Post subject: Cracked wheel fairing brackets

Has anyone any ideas as to why these cracks have  come about. The bracket bearings are free and the fairing free to move. Only  thing none standard, as this is a 79 Tiger, is it is not fitted with brake  covers.

  

 I have had the question up on the Gang, but apart  form one reply saying never seen before had no other feedback, thought there may  be a few more in the business guys looking on here who may have a  view. 

 

If this had only been on one of the brackets I would have just put it  down to a one off situation, but from the pictures you will see the other side  has started in the same place. All comments welcome as I have a new bracket for  the one cracked right though, but don't want the same thing to start happening  again.

  

Pictures of the problem can be found at [url=]http://ayaforum.org/viewtopic.php?p=414#414[/url]

  

 Ian

    [quote][b]

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az_gila

Joined: 17 Jun 2006
Posts: 99
Location: Tucson, AZ

Posted: Sat May 10, 2008 11:36 am Post subject: Cracked wheel fairing brackets

Ian... perhaps vibration caused by 150 mph airflow over the brackets? 



 Perhaps those flimsy plastic brake covers really do something useful...:^)



 gil A



 

 At 12:13 PM 5/10/2008, you wrote:

 [quote]Has anyone any ideas as to why these cracks have come about. The bracket bearings are free and the fairing free to move. Only thing none standard, as this is a 79 Tiger, is it is not fitted with brake covers.

  

 I have had the question up on the Gang, but apart form one reply saying never seen before had no other feedback, thought there may be a few more in the business guys looking on here who may have a view. 



 If this had only been on one of the brackets I would have just put it down to a one off situation, but from the pictures you will see the other side has started in the same place. All comments welcome as I have a new bracket for the one cracked right though, but don't want the same thing to start happening again.

  

 Pictures of the problem can be found at [url=??]http://ayaforum.org/viewtopic.php?p=414#414[/url]

  

 Ian

 

 [b]

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phil(at)ReliantAir.com
Guest

Posted: Sat May 10, 2008 1:04 pm Post subject: Cracked wheel fairing brackets

Have you checked to ensure the nose weights are present?  They dampen vibration I believe.

Sent from my Verizon Wireless BlackBerry



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flyv35b(at)minetfiber.com
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Posted: Sun May 11, 2008 6:05 am Post subject: Cracked wheel fairing brackets

Ian, I have never seen a cracked bracket like  that.  Maybe Gil's comment about aerodynamic vibration has some merit, but  then I would think you would feel something if it was violent enough to cause  that.  Most all planes have the brake cover fairings except some of the 2  place models which used an external Lord shock mount on top of the wheel  fairing.  You can no install the brake cover fairing on these due to the  interference.  And all the fiberglass fairings I've seen installed have not  had the lead weight installed in the nose so I doubt if that would cause  it.

  

 Cliff

 [quote]   ---

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i.r.m(at)btinternet.com
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Posted: Sun May 11, 2008 12:38 pm Post subject: Cracked wheel fairing brackets

Thanks to everyone that replied to this topic. From  one of those I think we may have found a possible reason for these  cracks.

 Check out this link and further pictures. Further  comments welcome.

  

 http://ayaforum.org/viewtopic.php?p=414#414

  

 Ian

  

  

  

 [quote]   ---

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GrummanDude

Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA

Posted: Sun May 11, 2008 1:17 pm Post subject: Cracked wheel fairing brackets

I'm in SLC to pick up my Grumman pontoon boat!  I haven't had a chance  

to look at the pics,but, I saw one other  inboard wheel fairing  

cracked and, at the time, I concluded that it was due to the hardware  

(it had a home-made spacer that was too big) on top of the remaining  

hardware being installed wrong.



Be patient. I'm having prototypes of new wheel pants being made as I  

type this.



Gary



Sent from my iPhone



On May 10, 2008, at 3:02 PM, phil(at)ReliantAir.com wrote:



[quote] 



 Have you checked to ensure the nose weights are present?  They  

 dampen vibration I believe.

 Sent from my Verizon Wireless BlackBerry



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_________________
Gary
AuCountry Aviation
Home of Team Grumman

GrummanDude

Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA

Posted: Sun May 11, 2008 1:24 pm Post subject: Cracked wheel fairing brackets

I never replace the weight either. I've never had a problem not having the weight either. 



Sent from my iPhone



On May 11, 2008, at 8:04 AM, "flyv35b" <flyv35b(at)minetfiber.com (flyv35b(at)minetfiber.com)> wrote:



[quote]  Ian, I have never seen a cracked bracket like  that.  Maybe Gil's comment about aerodynamic vibration has some merit, but  then I would think you would feel something if it was violent enough to cause  that.  Most all planes have the brake cover fairings except some of the 2  place models which used an external Lord shock mount on top of the wheel  fairing.  You can no install the brake cover fairing on these due to the  interference.  And all the fiberglass fairings I've seen installed have not  had the lead weight installed in the nose so I doubt if that would cause  it.

  

 Cliff

 [quote]   ---

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_________________
Gary
AuCountry Aviation
Home of Team Grumman

i.r.m(at)btinternet.com
Guest

Posted: Mon May 12, 2008 12:38 pm Post subject: Cracked wheel fairing brackets

Following up on the weights issue I knew these  fairings had the lead in them but had never checked the balance, silly me. Who  ever transferred the hardware over from the old plastic ones did just that,  transferred the old weights without re-balancing. They are way too nose heavy  now and as Gary says they are coming out. May have been a contributing factor to  the bracket cracking.???

  

 Ian

  

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