Grahah, Aother point is that although Roger Targett
probably did spray 20 lbs of gel coat on my plane I am
certain that I wet & dry sanded more than half of that
off, and my 914 mono has ended up as one of the lighter
ones around (at 833lbs) in spite of a very full range of
kit. David
GRAHAM SINGLETON <grahamsingleton@btinternet.com> wrote:
> Having re read what I said I take your point,
>oversimplification.Nevertheless it's surface
>imperfections
> ie any bump or hollow more than a couple of thou over a
>2" length is too much. 2000
> grit finish is probably as good as it needs for
>performance.
> Bird's wings intrigue me, there are incredibly
>efficient. I'd love to see a comparison of the fuel burn
> of an albatross or an arctic tern with a Europa. Grey
>Lag goose might be interestin too. How far do they fly
>without refueling?
> Point being I guess boundary layer control is
>everything, vortex generators had an amazing effect on my
>Long EZ,
> lowered the stall by 9 kts and little effect at higher
>speeds. (didn't get chance to measure it but the mod
>developer claims only 2kts
> penalty.
> Graham
>
>
>
>
>
> ________________________________
> From: David Joyce <davidjoyce@doctors.org.uk>
> To: europa-list@matronics.com
> Sent: Tuesday, 28 January 2014, 9:39
> Subject: Re: Europa-List: Cowl mods for front belt
>driven alternator
>
>
><davidjoyce@doctors.org.uk>
>
> Graham, Are you sure? You usually are, but competition
>gliders are produced with amazing attention to their
>finish - gel coat rubbed down progressively to 2000 grit
>and then polished with hard wax. We share their laminar
>flow aerofoils which are said to be highly sensitive to
>surface imperfections.
> Regards, David Joyce G-XSDJ (with gel coat finish!)
>
>
>
> GRAHAM SINGLETON <grahamsingleton@btinternet.com> wrote:
>> The lightest Mono I know of was less than 750lbs. A
>>showroom finish must weigh 20 lbs
>> at least and adds nothing to performance.
>> Graham
>>
>>
>>
>>
>> ________________________________
>> From: Greg Fuchs <gregoryf.flyboy@comcast.net>
>>
>> Hmm.. some HAVE paid more attention to the weight during
>>the build, and
>> still end up bloated.. 860 is not too bad, IMO.
>>
>> I'll be trying to use lower power items, such as
>>external LED lights and
>> EFIS. Since none of them pass Burt Rutans qualification
>>of staying in the
>> air when tossed there, I will now be adding
>>helium-balloon ballast to the
>> ship to compensate for it. :)
>>
>> Thanks again=
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