Re: Seat belt anchor bolts


Gordon Givens
 

For what it is worth Velocity does it by removing the top skin, digging out the foam, packing it with mico-glass, and inserting the aluminum hardpoint and glassing over it with two plies of bid. If you go to Andy Millin's website at http://www.kal-soft.com/velocity/ and go to photos 261 and 262 he shows it very well.

Gord
Q2 Builder
Ottawa, Canada

----- Original Message -----
From: Paul Buckley
To: Q-LIST@yahoogroups.com
Sent: Thursday, February 24, 2005 12:24 PM
Subject: Re: [Q-LIST] Seat belt anchor bolts


Somewhere in an old Q-talk there is a suggested modification to the seat belt attach points, utilising the outside skin.
I am a little hazy about it but I think it involved removing a section of the inner skin and foam and floxing in a 3/8 ply reinforcing plate, then applying the glass reinforcing patches on the inside. The holes for the fastening bolts are then drilled all the way through the fus. side, countersunk on the outside and the appropriate AN4 bolts used. Any depression left on the fus. skin is filled with flox and a one ply bid patch applied (if considered neccessary)

Paul Buckley
TriQ-200
Cheshire
England.

----- Original Message -----
From: Larry Hamm
To: Q-LIST@yahoogroups.com
Sent: Thursday, February 24, 2005 6:01 AM
Subject: Re: [Q-LIST] Seat belt anchor bolts


Sam,

I, too, wonder about the ability of the glass to hold 9G forces. Maybe
about ten plies of six inch wide UNI, run as far to the rear as possible?

Thanks also to John and Neil, but since your answers don't match, I'll
have to throw them out. No, seriously, it sounds like the AN-4 will do
the job. Since I'm not planning on ever trying it out, I should be fine!

Larry

Sam Kittle wrote:
> Larry,
>
> I have been looking at installing my belt anchors and am really more
> concerned about the 7 layers of BID to the inside skin. I am thinking
> of cutting through the inside skin, removing the clark foam and then
> accomplishing the lay-up to the inside of the outside skin.
>
> It looks to me that the AN4 bolt is stronger than the lay-up to the
> inside skin. But I am not an engineer.
>
> Sam
>
> Larry Hamm wrote:
>
>
>>My van has metric grade 8.8 bolts, 10mm diameter, anchoring the belts
>>(and me). They feel very strong, even when I yank on them REALLY HARD.
>>On the other hand, the Q plans call for AN4 bolts, about 6mm diameter.
>>
>>Do 1/4" bolts really seem sufficient? Then again, since the Q bolts
>>don't have much to hang on to, I guess bigger bolts wouldn't provide any
>>more security, huh?
>>
>>Should I leave out the header tank and install airbags??
>>
>>Larry Hamm
>>"SubyQ"
>>
>>
>>
>>
>>Quickie Builders Association WEB site
>>http://www.quickiebuilders.org
>>
>>
>>Yahoo! Groups Links
>>
>>
>>
>>
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>>
>>
>
>
>
>
>
> Quickie Builders Association WEB site
> http://www.quickiebuilders.org
>
>
> Yahoo! Groups Links
>
>
>
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>
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>




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