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Retractable 3 point seat belt

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robin1(at)mrmoisture.com
Guest

Posted: Fri Aug 24, 2007 10:03 am Post subject: Retractable 3 point seat belt

Chris,

	Where are you sourcing the 3 point seat belt hardware?



Thanks,

Robin

Do Not Archive

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CJohnston(at)popsound.com
Guest

Posted: Fri Aug 24, 2007 11:25 am Post subject: Retractable 3 point seat belt

I found www.seatbeltpros.com to have pretty much what I needed.  I

actually didn't mention much about my re-design because I felt that

people might freak out on me and tell me how it's unsafe to blah blah

blah.  The bottom line for me was that aircraft seatbelts are always a

pain in the butt, and usually very cumbersome in their application.  For

the RV-10 I feel it's doubly so.  With some careful planning, it's

possible to have a standard 3 point retractable seatbelt setup that is

safe, and for the most part keeps out of the way when not in use.  I

still have a couple parts to machine to make everything work, but I

think the end result will be excellent.  It will also have the added

benefit of ease of use for passengers, as it has the same functionality

as a standard auto seatbelt.  



I would caution those who would attempt the setup that I'm going with to

make certain of a couple KEY points.



I searched for awhile and ordered one set of belts as a tester to make

sure of this first point: the lap part of the belt needs to be able to

cinch tight across the lap regardless of the movement of the shoulder

strap.  in an aircraft, this matters very much.  Many automotive belts

have unrestricted webbing movement through the latch hardware.  My

feeling for aircraft applications is that you should be able to snug the

lap part of the seatbelt and have it not move very much(for turbulence,

and general stay-put-ness).  



The second point is more crucial...  the retractor in most cars these

days are vehicle sensitive to a certain degree, and need to be mounted

in a specific orientation to work properly.  The retractors I'm using

just take into account the speed of the webbing out of the retractor,

and halt it at a certain point.  This means that you can mount them

however you want, and they'll work properly.  



Make no mistake - installing retractable 3 point belts is an engineering

nightmare in the RV-10, but it can (I think!) be done.  It mattered

enough to me to try to tackle the problem and come up with a solution

that works well.  It might still blow up in my face and force me to go

back to the factory setup, but I think I've got it all sorted out.  I'm

not sure if I would have attempted it if I didn't have access to a mill

to be able to build the parts I needed for mounting pads etc.  



Sorry for the long-winded response, but I didn't want people to get the

impression that it was going to be a straight "bolt-on" mod.  It takes a

bunch of forethought and planning to make it work.



cj

#40410

stuff

www.perfectlygoodairplane.net

--

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

GenGrumpy(at)aol.com
Guest

Posted: Fri Aug 24, 2007 3:32 pm Post subject: Retractable 3 point seat belt

Guys,

  

 Been there, done that, and mine are installed and I love 'em.  AMSAFE belts with retractors on all shoulder harnesses.

  

 Send me a separate email and I'll send you a few pictures of the install on mine.

  

 Or better yet, ask Dave McNeill at dlm46007(at)cox.net (dlm46007(at)cox.net).  He worked the design and installation.  I was the first one to install them in a 10.

  

 Grumpy

 N184JM

  

  

  

 In a message dated 8/24/2007 2:27:24 PM Central Standard Time, CJohnston(at)popsound.com writes:

 [quote]--> RV10-List message posted by: "Chris Johnston" <CJohnston(at)popsound.com>



I found www.seatbeltpros.com to have pretty much what I needed.  I

actually didn't mention much about my re-design because I felt that

people might freak out on me and tell me how it's unsafe to blah blah

blah.  The bottom line for me was that aircraft seatbelts are always a

pain in the butt, and usually very cumbersome in their application.  For

the RV-10 I feel it's doubly so.  With some careful planning, it's

possible to have a standard 3 point retractable seatbelt setup that is

safe, and for the most part keeps out of the way when not in use.  I

still have a couple parts to machine to make everything work, but I

think the end result will be excellent.  It will also have the added

benefit of ease of use for passengers, as it has the same functionality

as a standard auto seatbelt.  



I would caution those who would attempt the setup that I'm going with to

make certain of a couple KEY points.



I searched for awhile and ordered one set of belts as a tester to make

sure of this first point: the lap part of the belt needs to be able to

cinch tight across the lap regardless of the movement of the shoulder

strap.  in an aircraft, this matters very much.  Many automotive belts

have unrestricted webbing movement through the latch hardware.  My

feeling for aircraft applications is that you should be able to snug the

lap part of the seatbelt and have it not move very much(for turbulence,

and general stay-put-ness).  



The second point is more crucial...  the retractor in most cars these

days are vehicle sensitive to a certain degree, and need to be mounted

in a specific orientation to work properly.  The retractors I'm using

just take into account the speed of the webbing out of the retractor,

and halt it at a certain point.  This means that you can mount them

however you want, and they'll work properly.  



Make no mistake - installing retractable 3 point belts is an engineering

nightmare in the RV-10, but it can (I think!) be done.  It mattered

enough to me to try to tackle the problem and come up with a solution

that works well.  It might still blow up in my face and force me to go

back to the factory setup, but I think I've got it all sorted out.  I'm

not sure if I would have attempted it if I didn't have access to a mill

to be able to build the parts I needed for mounting pads etc.  



Sorry for the long-winded response, but I didn't want people to get the

impression that it was going to be a straight "bolt-on" mod.  It takes a

bunch of forethought and planning to make it work.



cj

#40410

stuff

www.perfectlygoodairplane.net

--

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

av8or(at)cox.net
Guest

Posted: Fri Aug 24, 2007 5:32 pm Post subject: Retractable 3 point seat belt

How about sharing them with the group?  I'd  like to see them too.

  

 JT

 #40262

 [quote]      Send me a separate email and I'll send you a few pictures of the install    on mine.

    

   Or better yet, ask Dave McNeill at dlm46007(at)cox.net (dlm46007(at)cox.net).  He worked the    design and installation.  I was the first one to install them in a    10.

    

   Grumpy

   N184JM

    



[b]

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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robin1(at)mrmoisture.com
Guest

Posted: Sat Aug 25, 2007 8:03 am Post subject: Retractable 3 point seat belt

Grumpy,  

Are you saying you used them on all 4 seats? Wow. Photos please, please, please if you can.  

   

Thanks in advance,  

Robin  

Do not archive  

       

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of GenGrumpy(at)aol.com

 Sent: Friday, August 24, 2007 4:31 PM

 To: rv10-list(at)matronics.com

 Subject: Re: Retractable 3 point seat belt  

  

  

       

Guys,  

    

   

    

Been there, done that, and mine are installed and I love 'em.  AMSAFE belts with retractors on all shoulder harnesses.  

    

   

    

Send me a separate email and I'll send you a few pictures of the install on mine.  

    

   

    

Or better yet, ask Dave McNeill at dlm46007(at)cox.net (dlm46007(at)cox.net).  He worked the design and installation.  I was the first one to install them in a 10.  

    

   

    

Grumpy  

    

N184JM  

    

   

    

   

    

   

    

In a message dated 8/24/2007 2:27:24 PM Central Standard Time, CJohnston(at)popsound.com writes:  

  [quote]  

--> RV10-List message posted by: "Chris Johnston" <CJohnston(at)popsound.com>

 

 I found www.seatbeltpros.com to have pretty much what I needed.  I

 actually didn't mention much about my re-design because I felt that

 people might freak out on me and tell me how it's unsafe to blah blah

 blah.  The bottom line for me was that aircraft seatbelts are always a

 pain in the butt, and usually very cumbersome in their application.  For

 the RV-10 I feel it's doubly so.  With some careful planning, it's

 possible to have a standard 3 point retractable seatbelt setup that is

 safe, and for the most part keeps out of the way when not in use.  I

 still have a couple parts to machine to make everything work, but I

 think the end result will be excellent.  It will also have the added

 benefit of ease of use for passengers, as it has the same functionality

 as a standard auto seatbelt.  

 

 I would caution those who would attempt the setup that I'm going with to

 make certain of a couple KEY points.

 

 I searched for awhile and ordered one set of belts as a tester to make

 sure of this first point: the lap part of the belt needs to be able to

 cinch tight across the lap regardless of the movement of the shoulder

 strap.  in an aircraft, this matters very much.  Many automotive belts

 have unrestricted webbing movement through the latch hardware.  My

 feeling for aircraft applications is that you should be able to snug the

 lap part of the seatbelt and have it not move very much(for turbulence,

 and general stay-put-ness).  

 

 The second point is more crucial...  the retractor in most cars these

 days are vehicle sensitive to a certain degree, and need to be mounted

 in a specific orientation to work properly.  The retractors I'm using

 just take into account the speed of the webbing out of the retractor,

 and halt it at a certain point.  This means that you can mount them

 however you want, and they'll work properly.  

 

 Make no mistake - installing retractable 3 point belts is an engineering

 nightmare in the RV-10, but it can (I think!) be done.  It mattered

 enough to me to try to tackle the problem and come up with a solution

 that works well.  It might still blow up in my face and force me to go

 back to the factory setup, but I think I've got it all sorted out.  I'm

 not sure if I would have attempted it if I didn't have access to a mill

 to be able to build the parts I needed for mounting pads etc.  

 

 Sorry for the long-winded response, but I didn't want people to get the

 impression that it was going to be a straight "bolt-on" mod.  It takes a

 bunch of forethought and planning to make it work.

 

 cj

 #40410

 stuff

 www.perfectlygoodairplane.net

 

 

 --

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

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