Hi! Ronald and Wayne
Just a further point to remember is that ALL the products you use in the
epoxy work need to be "heat soaked" to be at the correct temps even prior to
the mixing and application ....including the glass cloth and polystyrene.
It takes a number of hours for cans of the resin to be up to standard
temperatures and then the application is easier and isn't so resin rich and
therefore is of lighter construction.
Regards
Bob Harrison G-PTAG
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of R.C.Harrison
Subject: RE: Europa-List: Neubie composite question
Hi! Ronald./Wayne.
The working and curing temperatures as listed in the manual need to be
observed for the requisite bond strengths to be achieved .
Any form of space heater utilising oil/Parafin burners (unless the burn't
gasses are directed outside and so don't contribute to the humidity) are
IMHO a NO NO! Too much water laden atmosphere. Suggest hot water filled
central heating radiators, electric oil filled radiators,
mass electric storage heaters or electric hot air blowers, also the use of
"dehumidifiers" is very effective. I also sealed my garage floor with a
polyurethane painted membrane since there wasn't one put underneath on
construction, I insulated the steel "Up and Over " door, this reminds me
that I must turn the radiator off since it's now spring and the garage no
longer needs priority over the house !!!!! I wouldn't use lamps which
concentrate the energy into spots. It's a general heat you need all over the
construction or you may get differential expansion inducing stresses and any
polystyrene foam constructions need to be given time to loose the heat from
the chemical process since it is an insulator it'self! The sample records of
mixes would be somewhat complicated to keep, the really important factors in
getting the bond right is with the correct and adequate ABRAIDING of the
parts to be bonded.
I'm no authority myself but feel that this kind of logic is best followed.
Regards
Bob Harrison G-PTAG Europa 337/MKI/Jabiru 3300 #084
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of Ronald J.
Parigoris
Subject: Europa-List: Neubie composite question
<rparigor@suffolk.lib.ny.us>
> My partner Wayne has a truck with XS Monowheel, Firewall back, A-265 just
leaving
> Florida as we speak on the way back to NY. Just in time for the snow
storm.
Renting a T hangar, not insulated with a 100,000BTU space heater, using a
Beckman
home oilburner, but are running it on kerosene.
I kinda sortta think curing epoxy is not going to like the moisture created
from
heater.
I have a 20 by 20 garage that is unheated but insulated. I do have a 50,000
BTU
Space heater and Wayne has a heated basement, about 12 x 15 usable area.
A few basic questions about working with epoxy:
What temperature/humidity for what length of time is ideal?
What temperature/humidity for what length of time can you get away with?
Any suggestions how to keep heat up for the cure? Infared lamps? Spot lamps?
Other?
Is it a good idea to keep samples of mixed epoxy with notes as to where you
used the
mix?
Kit has accelerated tailplane and accelerated cockpit. What areas are the
least
critical to begin with?
What areas are most critical, should be done last?
Sincerly thanks for your help.
We know how to follow complicated build manuals (which either has not seen
as of yet
for Europa), but find often after builds that there is a better way than
depicted.
Fair amount of experiance between Wayne and myself with West System on
Boats, and
model airplane work.
Ron Parigoris
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