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Pressure recovery wheel pants

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Craymondw(at)aol.com
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Posted: Wed Oct 15, 2008 9:55 am Post subject: Pressure recovery wheel pants

How much speed is added with pressure recovery wheel pants and where do you  purchase them?



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robin02(at)mindspring.com
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Posted: Wed Oct 15, 2008 10:19 am Post subject: Pressure recovery wheel pants

I have recently purchased  a set from Van's.  I think the cost was about 375 and includes some really  nice aluminum brackets that are preformed.  A guy on the Van's Air force  site offers the replacement brackets in stainless but, I see no reason to go  that way. Fitting is underway so...no flight test yet.  Some RV guys that  have converted from the old design that is similar to the glasair pants claimed  a eight MPH increase. Our planes are faster anyway and the increase should  be even more.

  

 I am unaware of a nose  wheel pressure recovery pant, but the two main wheel pants are well made and  very light for the size. RObin 286YM

  



 

 

 

 How much speed is added with pressure recovery wheel pants and where do you  purchase them?



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Craymondw(at)aol.com
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Posted: Wed Oct 15, 2008 10:48 am Post subject: Pressure recovery wheel pants

My Glasair 2S FT cruises around 210 mph (at) 8.500 feet. Several years  ago I dropped a center line, center firewall and tail, on my concrete  hanger floor. Then I dropped two plumb lines from the plane to the center  line. Then I ran two parallel lines that went through the main wheel  line. After doing that I was surprised to find that the rears of my  both main wheel pants where off center by three inches. I readjusted  the pants and and had to readjust my rudder trim. After performing those  three adjustment I picked up close to 10 mph. I friend had a wind  tunnel test performed on his plane and found the wing fairing dragged down  the plane. Glasairs without wing fairing's are generally faster than Glasairs  with them. A Stoddard Hamilton engineer informed me that he had a wing fairing  retro fit that would add 15 mph to the cruise. But six months later Stoddard  Hamilton went belly up. Glasairs should be just a fast as Lancairs, but  unfortunately the factory have offered no improvements to the design. The  other problem is weight. Glasairs are built like tanks and if the spar, skins  and landing gear was offered in carbon fiber, a few hundred pounds would be  shed. 



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fontenotsteve(at)bellsout
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Posted: Wed Oct 15, 2008 10:54 am Post subject: Pressure recovery wheel pants

I haven't made a decisioin yet but some glasair guys are claiming 10kts.  You can order the vans front wheel pants from them. I think it''s about $140.  All together all three are about 400.

  

 Steve

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robin02(at)mindspring.com
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Posted: Wed Oct 15, 2008 11:06 am Post subject: Pressure recovery wheel pants

A Stoddard Hamilton engineer informed me that  he had a wing fairing retro fit that would add 15 mph to the cruise.  

 Was it Bob Gavinski that had  developed the fairing.  If so, he may can be contacted.....15MPH is worth  the small amount of work to change. RObin  286YM

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Craymondw(at)AOL.COM
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Posted: Wed Oct 15, 2008 11:22 am Post subject: Pressure recovery wheel pants

Robin, it was that young engineer that developed the carbon fiber  wing for the Aurora.  



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robin02(at)mindspring.com
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Posted: Wed Oct 15, 2008 11:36 am Post subject: Pressure recovery wheel pants

Robin, it was that young engineer that developed the carbon fiber  wing for the Aurora.  

  

 I saw the wing at Oshkosh and it was Bob  that demonstrated the weight and strength when I was in the booth.   Last I heard Bob Gavinski was a corp. pilot.....Bruce.  Are you still in  contact with Bob?   RObin   



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Bruce(at)glasair.org
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Posted: Wed Oct 15, 2008 12:03 pm Post subject: Pressure recovery wheel pants

No, I haven't seen or heard from Bob since  SH went belly up.

  

  

  

Bruce 

www.Glasair.org 

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