Dave,
If I were doing it, I would remove the tufnol block and feather off the gla
ss on the Rib for 6'', scuff for 9'' and probably leave the fairing lay up
alone, 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 enough
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 and
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 gr
its 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 harden
er, 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
tray for use with the roller.
Keeping the resin warm, and perhaps the wetting out bench with a fan heater
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
starts to cure won't be a problem.Then make up some sort of fireproof tent
/ box / duct to let you warm it to 20 + overnight with some sort of dry hea
t [ no kerosene / propane ]
Cheers,
Nev.
-----Original Message-----
From: djaflyact <djaflyact@gmail.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 hav
e 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 roo
t 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 wo
rld
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 int
o the
colder weather. I have a large hangar, which is very difficult to heat.
Thanks for all the inputs.
Dave
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