Today's Message Index:
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1. 06:43 AM - Re: EXTERNAL: Re: Pulsar-List Digest: 5 Msgs - 01/28/14 (Cowan, Michael)
2. 01:07 PM - Re: Prop for sale (Emil Sr)
3. 06:42 PM - Re: Prop for sale (Emil Sr)
Message 1
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| Subject: | Re: Pulsar-List Digest: 5 Msgs - 01/28/14 |
Well said.
-----Original Message-----
From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of Bob Hartunian
Sent: Friday, January 31, 2014 8:39 AM
Subject: EXTERNAL: Pulsar-List: Re: Pulsar-List Digest: 5 Msgs - 01/28/14
All organic materials will eventually be effected by solvents. The degree of dissolution
is a function of the specific materials involved and the solvent's chemical
activity, concentration and time and temp. For polymers like epoxies,
the degree of cross-linking determines the tendency to dissolve and if it is a
thermoset, the cross-linking density is higher so dissolution is slower, measured
in years of exposure. The higher the initial cure temp, the better solvent
resistance. A 350F cured epoxy resin will be considered uneffected by gasoline
with ethanol for years of exposure but a room temp curing epoxy adhesive will
begin the degradation process quicker.
When you have a structure that requires room temp construction (Pulsar kits), those
cured materials have a lower chemical resistance to direct solvent exposure.
The easiest remedy is to put a sacrificial coating of higher solvent resistance
material over the weaker base to keep the solvent off the more susceptible
material, and that's what the Jeffco novolac does.
Given years of constant exposure, that too will gradually degrade and will need
recoating to provide a new, resistant surface.
So this problem is systemic when fuels with solvent are exposed to epoxies and
you just coat the surfaces periodically to keep the underlying structure sound.
It's like painting a wood home every ten years.
Or you construct the tank from a metallic material that is uneffected by solvent.
It's too late to redesign and construct metal tanks in flying Pulsar planes,
so the protective coating, inspected and maintained, will keep the wing structure
from degrading.
Bob H
> From: Pulsar-List Digest Server <pulsar-list@matronics.com>
> Date: Tue, 28 Jan 2014 23:58:46 -0800
> To: Pulsar-List Digest List <pulsar-list-digest@matronics.com>
> Subject: Pulsar-List Digest: 5 Msgs - 01/28/14
>
> *
>
> =================================================
> Online Versions of Today's List Digest Archive
> =================================================
>
> Today's complete Pulsar-List Digest can also be found in either of the
> two Web Links listed below. The .html file includes the Digest
> formatted in HTML for viewing with a web browser and features
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>
> HTML Version:
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>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=html&C
> hapter=2
> 014-01-28&Archive=Pulsar
>
> Text Version:
>
>
> http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Ch
> apter
> 14-01-28&Archive=Pulsar
>
>
> ===============================================
> EMail Version of Today's List Digest Archive
> ===============================================
>
>
> ----------------------------------------------------------
> Pulsar-List Digest Archive
> ---
> Total Messages Posted Tue 01/28/14: 5
> ----------------------------------------------------------
>
>
> Today's Message Index:
> ----------------------
>
> 1. 08:10 AM - Pulsar 1 to Pulsar XP conversion (Sonja Englert)
> 2. 09:32 AM - Re: Re: Fw: Jeffco Epoxy (Bernard Wilder)
> 3. 04:07 PM - Shock Strut Attach Bracket (PreCompTech)
> 4. 04:57 PM - Re: Shock Strut Attach Bracket (pilot623)
> 5. 05:03 PM - Re: Shock Strut Attach Bracket (PreCompTech)
>
>
>
> ________________________________ Message 1
> _____________________________________
>
>
> Time: 08:10:52 AM PST US
> Subject: Pulsar-List: Pulsar 1 to Pulsar XP conversion
> From: Sonja Englert <paqs345@gmail.com>
>
>
> Hi Group,
>
> A number of Pulsar 1 kit owners have expressed the wish to upgrade
> their Pulsar to a 4-stroke engine. This is generally not possible due
> to the higher weight of the engine and the low gross weight their
> structure was designed for.
>
> I have now examined the wood wing and fuselage structure in detail,
> calculated the loads for a gross weight increase and came up with a
> number of reinforcements which brings the kit up to the same strength
> as the Pulsar XP. This allows the use of a Rotax 912 engine and
> increases all other limitations to those of a Pulsar XP.
> The reinforcements can only be incorporated before any assembly of the
> kit has taken place. It is not possible to upgrade a Pulsar 1 after it
> has been built.
>
> I am making the documentation available to Pulsar builders, please see
> my web site http://www.caro-engineering.com under 'Pulsar Builder's
> Support' for details.
>
> Sonja
>
>
> ________________________________ Message 2
> _____________________________________
>
>
> Time: 09:32:37 AM PST US
> Subject: Re: Pulsar-List: Re: Fwd: Jeffco Epoxy
> From: Bernard Wilder <bernard.wilder2@gmail.com>
>
>
> Jeffco 9700 is now Rhino 9700.(( Rhino of pick-up truck liner fame
> bought them out.)) Google the manufacturers spec sheet and you will
> find that it is a high quality cement paint with no mention of any
> aircraft applications. I used it on my XP and found that after 13
> years ethanol had almost completely dissolved it all away. I could
> find no better material so I recoated my fuel cells with it again. I
> keep a couple pieces of panel coated with 9700 in a quart jar filled
> with MoGas. Every time I fly I give the jar a good shake. When the
> coating on the piece in the jar gets thin I will know that it is time
> to recoat my fuel cells.
>
> BTW Rhino also makes a line of epoxy cements.
>
> Bernie Wilder
>
> On Tue, Jan 28, 2014 at 1:05 AM, PreCompTech <pctllc1@hotmail.com> wrote:
>>
>> We've used Jeffco 9700 Tank Sealer for many years with great results
>> on aircraft
> running jet fuel to standard gas.
>>
>> Biggest tip I can give is to make sure ALL pinholes and edges are sealed.
>>
>> --------
>> Kris Anderson, Owner
>> Precision Composites Technologies, LLC
>> 509-521-7564
>> www.precomptech.com
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=417742#417742
>>
>>
>
>
> ________________________________ Message 3
> _____________________________________
>
>
> Time: 04:07:17 PM PST US
> Subject: Pulsar-List: Shock Strut Attach Bracket
> From: "PreCompTech" <pctllc1@hotmail.com>
>
>
> Part number AD355-A
>
> Does anyone have an extra one of these around?
>
> If not, I'm assuming it's made from 4130 steel and I can have my
> welder make it.
> Easier if one is on a shelf somewhere.
>
> --------
> Kris Anderson, Owner
> Precision Composites Technologies, LLC
> 509-521-7564
> www.precomptech.com
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=417794#417794
>
>
> Attachments:
>
> http://forums.matronics.com//files/image_250.jpg
>
>
> ________________________________ Message 4
> _____________________________________
>
>
> Time: 04:57:43 PM PST US
> From: "pilot623" <pilot623@gmail.com>
> Subject: RE: Pulsar-List: Shock Strut Attach Bracket
>
>
> What is this part?
>
> -----Original Message-----
> From: owner-pulsar-list-server@matronics.com
> [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of
> PreCompTech
> Sent: Tuesday, January 28, 2014 6:07 PM
> Subject: Pulsar-List: Shock Strut Attach Bracket
>
>
> Part number AD355-A
>
> Does anyone have an extra one of these around?
>
> If not, I'm assuming it's made from 4130 steel and I can have my
> welder make it. Easier if one is on a shelf somewhere.
>
> --------
> Kris Anderson, Owner
> Precision Composites Technologies, LLC
> 509-521-7564
> www.precomptech.com
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=417794#417794
>
>
> Attachments:
>
> http://forums.matronics.com//files/image_250.jpg
>
>
> ________________________________ Message 5
> _____________________________________
>
>
> Time: 05:03:52 PM PST US
> Subject: Pulsar-List: Re: Shock Strut Attach Bracket
> From: "PreCompTech" <pctllc1@hotmail.com>
>
>
> As stated, it's the Shock Strut Attach Bracket (Ad355-A)
>
> --------
> Kris Anderson, Owner
> Precision Composites Technologies, LLC
> 509-521-7564
> www.precomptech.com
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=417800#417800
>
>
>
>
>
>
>
>
>
Message 2
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| Subject: | Re: Prop for sale |
On 12/4/2013 10:11 AM, Ray Wilhelm wrote:
>
> I have a little used Sensenich 60X64 prop for sale for the Jab 3300.
> Asking $500 plus shipping. E-mail off line for pictures.
>
> Ray
>
> *
>
> *
Message 3
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| Subject: | Re: Prop for sale |
On 2/3/2014 4:07 PM, Emil Sr wrote:
> On 12/4/2013 10:11 AM, Ray Wilhelm wrote:
>>
>> I have a little used Sensenich 60X64 prop for sale for the Jab 3300.
>> Asking $500 plus shipping. E-mail off line for pictures.
>>
>> Ray
>>
>> Hi Ray Do you still have the prop for sale? I have the pulsar 111
>> with the Jab 3300 e3ngine in Indiana N143NB thanks Emil Radtke
>>
>> *
>>
>> *
>
> *
>
>
> *
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