Today's Message Index:
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1. 02:14 PM - Re: Re: Paint Peeled of after using Prekote as etching agent (Jimbo)
2. 02:55 PM - Re: Paint Peeled of after using Prekote as etching agent (Thruster87)
3. 05:56 PM - Re: Re: Paint Peeled of after using Prekote as etching agent (Jimbo)
4. 09:09 PM - Flutter Testing shows 601/650 OK (T. Graziano)
5. 10:39 PM - Re: Paint Peeled of after using Prekote as etching agent (Thruster87)
Message 1
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| Subject: | Re: Paint Peeled of after using Prekote as etching |
agent
This is from the HS35 data sheet.
5. SURFACE PREPARATION
=A2 Surfaces should be prepared using the proper undercoat system fol
lowing recommended procedures.
=A2 Sanding grits coarser than 220P grit should be finish sanded with
finer grit prior to application.
=A2 Clean surface with Aqua Clean 170.
6. SUBSTRATES
=A2 Properly prepared previously painted surfaces
=A2 Properly prepared OEM finishes
=A2 VP50 Epoxy Primer
=A2 DTM2004 Primer
=A2 CPS Series Primers and Sealers
It look like HS35 is not intended for application on bare metal.
--- On Thu, 5/21/09, Thruster87 <alania@optusnet.com.au> wrote:
From: Thruster87 <alania@optusnet.com.au>
Subject: Zenith601-List: Re: Paint Peeled of after using Prekote as etching
agent
The Valspar HS35 two pack acrylic paint is the primer and if the topcoat=C2
- [two part as well]is applied after 1/2hr and before 2hrs it does not re
quire sanding as the primer is still tacky [chemically]. This method is gre
at for surfaces with protruding rivet heads.The only conclusion I have come
up with, is the temp was only 20 deg C and there may have been moisture in
the air line????? Cheers
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=244945#244945
t
S WEB FORUMS -
on Web Site -
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
Message 2
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| Subject: | Re: Paint Peeled of after using Prekote as etching agent |
That is correct Valspar HS35 is NOT a etch primer that is why your need to use
an etching agent like Alodine or an etch primer.I used Prokote which [i]is a
proprietary and revolutionary formula, PreKote Surface Pretreatment is a non-chromated
metal preparation chemical utilizing a safe, hazard-free process. PreKote
offers off-the-chart adhesion, improved paint flexibility, and superior corrosion
protection on painted surfaces. PreKote has passed stringent testing
by the U.S. Department of Defense, the Boeing Company and other coating industry
leaders. By eliminating the need for chromate conversion coatings, acid etches,
solvent washes and other toxic processes, PreKote can reduce paint preparation
time and costs by up to 40% [/i]achieving results superior to hazardous
processes and products. BUT IT DID NOT WORK so well on my wings ????
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245005#245005
Message 3
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| Subject: | Re: Paint Peeled of after using Prekote as etching |
agent
I dont want this to grow into an argument, but for the benefit of others, V
alspar documentation does not approve HS35, listed as a sealer and surfacer
, for use on bare metal, even if cleaned and etched. It looks like it is pr
imarily intended for sealing and filling scratches in old paint for refinis
h jobs. Ive used Dupont surfacers in automotive work so I have some experie
nce with that type of product.
As far as I know, Boeing uses epoxy, not polyurethane primers, and, accordi
ng to Valspar literature, epoxy is approved for use on bare metal.
http://www.valsparrefinish.com/refinish/pdf/UNDERSTANDING_UNDERCOATS.pdf
--- On Fri, 5/22/09, Thruster87 <alania@optusnet.com.au> wrote:
From: Thruster87 <alania@optusnet.com.au>
Subject: Zenith601-List: Re: Paint Peeled of after using Prekote as etching
agent
That is correct Valspar HS35 is NOT a etch primer that is why your need to
use an etching agent like Alodine or- an etch primer.I used Prokote which
[i]is a proprietary and revolutionary formula, PreKote=C2=AE Surface Pretr
eatment is a non-chromated metal preparation chemical utilizing a safe, haz
ard-free process. PreKote=C2=AE offers off-the-chart adhesion, improved pai
nt flexibility, and superior corrosion protection on painted surfaces. PreK
ote=C2=AE has passed stringent testing by the U.S. Department of Defense, t
he Boeing Company and other coating industry leaders. By eliminating the ne
ed for chromate conversion coatings, acid etches, solvent washes and other
toxic processes, PreKote=C2=AE can reduce paint preparation time and costs
by up to 40% [/i]achieving results superior to hazardous processes and prod
ucts. BUT IT DID NOT WORK so well on my wings ????
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245005#245005
le, List Admin.
Message 4
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| Subject: | Flutter Testing shows 601/650 OK |
See Below:
((Heck! I only took mine up to 195 mph (314 kph) during my Phase I
testing))
Tony Graziano
601XL/Jab3300; N493TG: 492 hrs
ZENAIR EUROPE NEWS
http://www.zenairulm.com/News/index_files/Page1128.htm
Update of May 15, 2009
The results of the German-led GVT (Ground Vibration Tests) are in and
they are unequivocal: The Zodiac CH 601 XL and CH 650 E are not subject
to flutter if built, maintained and flown as intended by Zenair. The
linear flutter tests confirmed this for all speeds up to 400 km/h and
with aileron control cable tension down to less than ten pounds. Chris
Heintz and representatives from Zenair Europe will be meeting with DAeC
engineers in Germany during the coming week to review results of the
recently concluded tests and to discuss the process for lifting
remaining flight limitations on the LTF-UL certified aircraft.
"I am pleased with the results of the GVT" said Zodiac designer Chris
Heintz, "with the integrity of the design confirmed, we now need to
ensure that pilots don't forget that all aircraft have limitations".
Zenair is currently planning an education campaign aimed at informing
and sensitizing pilots of its designs to the importance of understanding
and respecting aircraft limitations (i.e. the Zodiac is not designed for
high stress or aerobatic maneuvers).
Nick Heintz of Zenair Europe says he expects that with the new GVT
results in hand, temporary limitations placed on the Zodiac model by
various CAA agencies around Europe will soon be reversed: "These were
put in place after a negative report from the Dutch Safety Board last
year suggested that the aircraft was prone to flutter - these new Ground
Vibration Tests, carried out by a leading world-wide expert in the field
of material fatigue and vibrations, now clearly proves otherwise". He
stated that all interested CAA offices will soon have an opportunity to
review results from the tests. Additional information will be posted
here very shortly.
Message 5
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| Subject: | Re: Paint Peeled of after using Prekote as etching agent |
Looks like a trip to the paint suppliers to have a bit of a discussion on why
they recommended the HS35 ???? DTM2004 is what they should have recommended.Just
goes to show you can't even rely on the so called experts. Cheers
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=245044#245044
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