Today's Message Index:
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1. 05:01 PM - Re: Dimples, rivets and gaps (Richard Scott)
2. 08:55 PM - Re: Exhaust on floor. (Andy Karmy)
Message 1
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| Subject: | Re: Dimples, rivets and gaps |
--> RV9-List message posted by: Richard Scott <rscott@cascadeaccess.com>
I had the same concern when I riveted my HS skin. One side of the HS skin
was flush and the other had a little gap between the skin & spar. Called
Van's & Tom Green told me this was normal and that on the side that was
flush, I had countersunk too deep. Said not to worry & forge on!
Richard Scott
9A Rudder & elevators
At 08:02 PM 2/13/2004, you wrote:
>--> RV9-List message posted by: Gerry Filby <gerf@gerf.com>
>
>
>Getting ready to rivet up the VS. My reading of the
>recommendations for dimpling vs countersinking leads me to
>believe that the spars in the VS should be dimpled to accept
>the dimples in the skin. The spars are too thin to be
>countersunk. So that's the way I went.
>
>But when I cleco the ribs, spars and skins together after
>dimpling - there is a gap between the skins and the spars, they
>don't sit perfectly flush against each other- probably less
>than half a millimeter of gap. The interlocking dimples does
>make the assembled structure quite rigid, but still I'm
>concerned ... seems like the rivets might "work" over time. I
>would really like to see the skins flat against the spars.
>
>When I countersank the HS spars it led to a much nicer mate
>with the skins. Am I going in the right direction here ?
>
>g
>
>==========================================================
>Gerry Filby gerf@gerf.com
> Home (415) 239 4846
> Cell (415) 203 9177
>
>
Message 2
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| Subject: | Re: Exhaust on floor. |
--> RV9-List message posted by: "Andy Karmy" <andy@karmy.com>
I really have not noticed "heat" as such, we are talking about warm
air against the outside when you're screaming across the sky...
Right? It's all about sound and vibration In my mind.
I put down 1/2" of sound deadening foam that I got from Aircraft
spruce. It's black and fairly dense. No aluminum backing. then I
used velcro to hold the carpet down to the foam.
I noticed quite a bit of vibration in my heels before installing the
carpet and foam, so that's the main advantage that I found. I did
have the engine dynamically balanced and that helped, but did not
remove all of it.
- Andy
>--> RV9-List message posted by: "Rob W M Shipley"
<rob@robsglass.com>
>
>Andy,
>Do you any other listers have any comments about the heat from
the exhaust on the floor and hence the insulation? What did
builders use on top of the insulation? Aluminium? Hexcel?
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