Hi Tony
If you have mounted the instrument module on rubber bushes as we discussed
earlier you will have created a vent all along the top, if heat is an issue
you can fit a fan or fans on the underside of the instrument module both
sides and drive cooler cabin air up into the module and let it exit across
the top. It could also act as a demister and it keeps the fans out of site.
Best wishes
Richard
G-CGZV
By the way you were right I can't count only 5 brackets hold the top engine
cowl on !
-----Original Message-----
From: Tony Renshaw
Sent: Friday, May 30, 2014 11:59 PM
Subject: Re: Europa-List: Re: Key Sanding................and Instrument
Panel ventilation
Hi John,
Re Key Sanding, I suppose the purpose is to legitimise why we do it, and its
because Ive been doing work on the very thin sandwich skin of the fuselage.
The cloth in question is so thin, and I believe any strong Grit will
compromise the structure, so it got me thinking about what the goal really
is. I reckon the goal is to abrade the matrix resin, without compromising or
ideally even touching the entrapped glass, and in essence increasing the
surface area in the process. I then wondered academically whether there was
any difference in the surface area between one Grit and another, and I dont
believe there is, SO, when key sanding, any grit will do if it roughens the
surface and dulls it off. Thats all, just an academic exercise, but I know
there are smarter guys than me on the list, so I asked.
re: Instrument Panel Venting, I have kindly been sent a few photos but am
always desiring seeing how others have done things, so yes, Id love to get
some photos. Thanks John.
Regards
Tony Renshaw
On 30 May 2014, at 9:55 pm, John Wighton <john@wighton.net> wrote:
>
> Tony,
>
> Not sure on where the surface area discussion is going - or the objective.
>
> Regarding the panel, l installed 2off fans in a carbon frame above the 6
> pack/EFIS hybrid panel in G-IPOD. This is the highest point hence hot air
> will collect here. It performs the de-mist function in the cockpit (no
> other heater is fitted).
>
> I can send some pics if needed.
>
> Regards
> John
>
> --------
> John Wighton
> Europa XS trigear G-IPOD
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=424022#424022
>
>
|