Sent from my iPad
> On 25 Oct 2013, at 23:57, Neville Eyre <neveyre@aol.com> wrote:
>
> Dave,
> If I were doing it, I would remove the tufnol block and feather off the gl
ass on the Rib for 6'', scuff for 9'' and probably leave the fairing lay up a
lone, just scuff it. Feather it best you can [ or until you get fed up ! ]
> Ampreg 21 is cr*p ! Needs to be warmed well above 25 to make it thin enoug
h to use. Even on hot [ for here] days I shove the can in front of a fan hea
ter.
> Look in the can now, chances are if it was stored over here for a while an
d got cold it will be like porridge [ or what is that awful breakfast you gu
ys have, ''grits'' ? ] yuk ! You will have to really warm it to have the gri
ts fall out of suspension, done once it will stay clear.
> Ampreg 21 with std hardener is pretty well useless to use, flashes off in t
he pot, then takes an age to cure on the job, at least with the slow hardene
r, even when you have warmed the resin, you have a reasonable time to get it
on the job, still mix it in small quantities, and dump it into a roller tra
y for use with the roller.
> Keeping the resin warm, and perhaps the wetting out bench with a fan heate
r blowing over it will let you be able to wet out the cloth OK, once you hav
e done the lay ups, and peel plied them, being at 15C for a while until it s
tarts to cure won't be a problem.Then make up some sort of fireproof tent / b
ox / duct to let you warm it to 20 + overnight with some sort of dry heat [ n
o kerosene / propane ]
> Cheers,
> Nev.
> -----Original Message-----
> From: djaflyact <djaflyact@gmail.com>
> To: europa-list <europa-list@matronics.com>
> Sent: Fri, Oct 25, 2013 7:23 am
> Subject: Europa-List: Re: MOD 78
>
>
> OK - Just as I was starting to feel like this mod was going to go OK.....
If I
> have to remove the controls and the tufnol block, then there is the issue o
f the
> fiberglass that is used to mount the wing root fairing. I assume that I ha
ve to
> just grind through all that too? The grinding of fiberglass is easier than
> carbon, so maybe it won't be too bad. I will not take all of the root rib g
lass
> off, fearing grinding into the root rib, which would not be good.
>
> I still think that splicing into the existing fiberglass on the spar to ro
ot rib
> junction would work fine, but you are right - it has not been tested.
>
> I've finished the grinding, but now have more. I do have one question: The
> Ampreg 21 says best to use between 18 and 25 degrees C. What is the real w
orld
> on this? RIght now, the weather is perfect as far as temperature and wind,
but
> in the not too distant future, the temperature will drop to where we will n
ot
> see above 15C for quite some time. Having to do more grinding pushed me in
to the
> colder weather. I have a large hangar, which is very difficult to heat.
>
> Thanks for all the inputs.
>
> Dave
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=411372#411372
>
>
>
>
>
>
>
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> tp://forums.matronics.com
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