Today's Message Index:
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1. 07:34 AM - Variprime and Alodine (Don Boardman)
2. 07:38 AM - Variprime and Alodine (Don Boardman)
3. 07:57 AM - Re: Variprime and Alodine (Ernest Martinez)
Message 1
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| Subject: | Variprime and Alodine |
--> Yak-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
I forgot to mention that the 701 was built of bare 6061-T6 aluminum and not
an Alclad situation.
Not sure if this is a factor or not.
Regards,
Don B.
Message 2
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| Subject: | Variprime and Alodine |
--> Yak-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
Hi Ernie, Craig,
I am in no way a paint expert but I thought I would pass on my experience.
When investigating the painting of my CH701 STOL I was told that the self
etching primer would do fine by itself. I was also told that an acid etch
and alodine treatment for a full paint job (verses a repair) could not hurt
and might be a good idea. I elected to acid etch and alodine and then shoot
with Dupont Variprime. I used Dupont's basecoat clearcoat system and after
14 years the plane (hangered) looks as good as the day it was sprayed. It is
possible that something has changed with the variprime's formula that might
not like the alodine ...? Check with your paint vendor. I found the
variprime easy to use. Seems more and more though epoxy primers are being
recommended.
I will be having to make some new paint decisions this winter.
My M-14PF powered Murphy Moose now has 15 hours on it and loving every
minute!!!!
Don Boardman
& Partner, Randy Bowers
N622D Double Duce Delta Moose ..."Smoky"
#130 M-14PF 400HP, MT-Prop/Beta, Aerocet 3500 amphibs
Delta Lake, Rome, NY
Time: 04:15:52 PM PST US
From: Ernest Martinez <erniel29@gmail.com>
Subject: Re: Yak-List: Dzus replacements and paint
--> Yak-List message posted by: Ernest Martinez <erniel29@gmail.com>
I used Variprime self etching primer. It does the same thing as acid
etching, which is to dull the surface to create a better so paint can
adhere. The acid etch also will remove the alclad off of NEW aluminum.
Alodine is to prevent corosion. You arent going to get any corosion on
your beautiful anodized aluminum, unless you've been a little too
aggressive with your stripping and have removed the anodizing. In my
case there were small patches where the anodizing was gone, but I
didnt worry about it since the primer will protect it.
Also, if you plan on using Variprime, you CANT use alodine, it will
adversly react with the conversion coating in the primer.
I acid washed my airplane in order to get every last bit of paint
remover and finger prints off of the airplane immediately before
shooting the primer. But that was kinda overkill, A good soapy washing
would have been sufficient.
Just remember to sand the primer before shooting the top coat. I start
with red scotch brite pads , then wet sand with 400 grit.
Bottom line is that acid etch/alodine is the old fashioned way to do
things, its not wrong, its just that you dont need to jump through all
those hoops with todays technology.
Ernie
On 6/10/05, Cpayne <cpayne@joimail.com> wrote:
> --> Yak-List message posted by: Cpayne <cpayne@joimail.com>
>
> Has anyone replaced the twistlock fasteners on 'changs with Dzus fasteners?
They
look so much alike but I'm not sure about sizes. I'd appreciate any help on
how to do this. Hoping to use stainless as I'm still preping for a paint job
and now is a good time for such goodies.
>
> Speaking of paint, for those who had their Yaks or CJ's repainted by a
professional
shop...what did they do to prep? Acid etch and alodyne over the anodized
finish, self-etching primer? What?
>
> Craig Payne
Message 3
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| Subject: | Re: Variprime and Alodine |
--> Yak-List message posted by: Ernest Martinez <erniel29@gmail.com>
Don,
I cant swear to the Variprime over Alodine problem, since I'm no paint
expert, I was just re-iterating what the paint rep told me, but
apparently it worked well for you.
Ernie
On 6/13/05, Don Boardman <dboardm3@twcny.rr.com> wrote:
> --> Yak-List message posted by: Don Boardman <dboardm3@twcny.rr.com>
>
> I forgot to mention that the 701 was built of bare 6061-T6 aluminum and not
> an Alclad situation.
> Not sure if this is a factor or not.
>
> Regards,
> Don B.
>
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