Today's Message Index:
----------------------
1. 04:41 AM - Re: Corrosion Proofing (Graham Singleton)
2. 06:37 AM - Re: Corrosion Proofing (William Mills)
3. 07:17 AM - Re: Corrosion Proofing (Andrew Sarangan)
4. 11:19 AM - Re: Corrosion Proofing (Graham Singleton)
5. 12:17 PM - Trigear 912s Performance Figures (Brian and Pat Tarmar)
6. 01:39 PM - Re: Trigear 912s Performance Figures (Duncan & Ami McFadyean)
Message 1
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| Subject: | Re: Corrosion Proofing |
Ron & all
DPLF or os ot DP40 in UK? is good stuff, however one other thing to
remember is that you must NOT sand it. It will become permeable if you
do. AS I understand it it's designed to be a very thin impermeable
membrane, so don't flat it off after it dries.
Graham
rparigor@suffolk.lib.ny.us wrote:
>
> Hello Phil
>
> >
> My favorite corrosion protect ant is PPG DPLF! It is a 2 part epoxy
> primer, it does not let in moisture. If you scuff surface it sticks better
> than any paint I have tried. Works on aluminium, steel and fiberglass.
> Downright amazing. It does not have UV inhibitors though.
>
>
> Ron P.
>
>
Message 2
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| Subject: | Re: Corrosion Proofing |
Graham,
What is your view on the Mod 72 method of protection? The spec calls for
painting all surfaces with etch primer, allowing it to dry and then applying
the ACF 50 before assembly. If the insert is a tight fit, presumably it
will skin the etch primer back to the metal as it enters the frame tube. I
like Ron's idea of assembling the inserts with the paint on both surfaces
still wet. What is your opinion?
Regards,
William
----- Original Message -----
From: "Graham Singleton" <grahamsingleton@btinternet.com>
Sent: Thursday, February 08, 2007 12:38 PM
Subject: Re: Europa-List: Corrosion Proofing
> <grahamsingleton@btinternet.com>
>
> Ron & all
> DPLF or os ot DP40 in UK? is good stuff, however one other thing to
> remember is that you must NOT sand it. It will become permeable if you do.
> AS I understand it it's designed to be a very thin impermeable membrane,
> so don't flat it off after it dries.
> Graham
>
> rparigor@suffolk.lib.ny.us wrote:
>>
>> Hello Phil
>>
>> >
>> My favorite corrosion protect ant is PPG DPLF! It is a 2 part epoxy
>> primer, it does not let in moisture. If you scuff surface it sticks
>> better
>> than any paint I have tried. Works on aluminium, steel and fiberglass.
>> Downright amazing. It does not have UV inhibitors though.
>>
>>
>> Ron P.
>>
>>
>
>
>
Message 3
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| Subject: | Re: Corrosion Proofing |
You can also try alodine, which is a two step chemical dip process. For
aluminum tubes it will work better than zinc chromate because it will
coat the inside surfaces too. I used alodine and then gave it a coat of
zinc chromate on top. I could not get zinc chromate from any of the
local auto paint shops or marine shops. Shipping cost is pretty
expensive if you buy from catalog stores because it is considered
hazmat. I picked up a few cans from the local Grainger outlet for
pretty cheap. It was something like $5 per can. A safer a alternative
is zinc oxide paint.
Message 4
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| Subject: | Re: Corrosion Proofing |
Ron's plan sounds good to me, I don't have much faith in etch primer
over zinc plated steel. Could be wrong though, it might bond. Will it
etch zinc?
Graham
William Mills wrote:
> <william@wrmills.plus.com>
>
> Graham,
> What is your view on the Mod 72 method of protection? The spec calls
> for painting all surfaces with etch primer, allowing it to dry and then
> applying the ACF 50 before assembly. If the insert is a tight fit,
> presumably it will skin the etch primer back to the metal as it enters
> the frame tube. I like Ron's idea of assembling the inserts with the
> paint on both surfaces still wet. What is your opinion?
> Regards,
> William5
Message 5
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| Subject: | Trigear 912s Performance Figures |
Having just completed the test flying programme for PFA approval with a
Woodcomp "Varia" 1700mm mechanically adjustable VP propeller on my
Trigear with Rotax 912S, I would be very interested to hear some
performance figures for other types of VP and constant speed propellers
(no bull**** please!), so that comparisons can be made. I have this
prop on sale or return from the UK agent, so can go to another model if
necessary. The Woodcomp "Varia" has 2 scimitar blades and is adjusted
by means of a simple cable arrangement in the cockpit and weighs no more
than the Warpdrive it replaces. So far we are very pleased with the
smoothe and quiet operation, an increase of 10 knots in cruising speed
and better take-off performance - but how does it match the more exotic
beasts? I hope you can assist.
Brian Tarmar G-OBJT Classic with 912S XS firewall forward
I choose Polesoft Lockspam to fight spam, and you?
http://www.polesoft.com/refer.html
Message 6
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| Subject: | Re: Trigear 912s Performance Figures |
Brian,
I'm sure that William Mills will give you chapter-and-verse.
But can you publish here your performance figures (including fuel burn
if available) plus geometry of prop (diameter and twist distribution).
I have a number of figures collected over the years from details that
have been published by others. I'll dig them out, but they don't relate
specifically to variable pitch props.
Duncan McF.
----- Original Message -----
From: Brian and Pat Tarmar
To: europa-list@matronics.com
Sent: Thursday, February 08, 2007 8:09 PM
Subject: Europa-List: Trigear 912s Performance Figures
Having just completed the test flying programme for PFA approval with
a Woodcomp "Varia" 1700mm mechanically adjustable VP propeller on my
Trigear with Rotax 912S, I would be very interested to hear some
performance figures for other types of VP and constant speed propellers
(no bull**** please!), so that comparisons can be made. I have this
prop on sale or return from the UK agent, so can go to another model if
necessary. The Woodcomp "Varia" has 2 scimitar blades and is adjusted
by means of a simple cable arrangement in the cockpit and weighs no more
than the Warpdrive it replaces. So far we are very pleased with the
smoothe and quiet operation, an increase of 10 knots in cruising speed
and better take-off performance - but how does it match the more exotic
beasts? I hope you can assist.
Brian Tarmar G-OBJT Classic with 912S XS firewall forward
I choose Polesoft Lockspam to fight spam, and you?
http://www.polesoft.com/refer.html
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