Received-SPF: pass
 receiver=logan.com; client-ip=165.166.0.86; envelope-from=jewen@comporium.net
Message-ID: <22404.165.166.0.80.1180186910.squirrel@webmail2.comporium.net>
In-Reply-To: <list-2066089@logan.com>
References: <list-2066089@logan.com>
Date: Sat, 26 May 2007 09:41:50 -0400 (EDT)
Subject: Re: [FlyRotary] Re: intake tubing
From: jewen@comporium.net
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
User-Agent: SquirrelMail/1.5.1
MIME-Version: 1.0
Content-Type: text/plain;charset=iso-8859-1
Content-Transfer-Encoding: 8bit

A quick primer on plastics,  There are 2 basic families:

Thermoplastic-Becoming soft when heated and hard when cooled. Examples:
Polyethelyne, PVC, styrene...

Thermoset-having the property of becoming permanently hard and rigid when
heated or cured; "the phenol resins and plastics were the original
synthetic thermosetting materials'

When using plastics in an area where heating may occur thermosets are
prefered (IMO.)  If thermoplastics are used, the key is to make sure the
glass transition temperature (point where softening starts) is higher than
the highest anticipated environmental temperature plus safety margin.
Otherwise those round tubes may become oval.

Joe


On Thu, May 24, 2007 6:34 pm, al p wick wrote:
> A lot of the new vehicles have plastic intake. My new engine does. Not
> sure if that helps. Intake weights 7 lbs or so.
>
> -al wick
>
>
>
> On Thu, 24 May 2007 18:14:15 -0400 "Joe Berki" <jskmberki@alltel.net>
> writes:
>
>> Has any one made an intake from composite?  I thought Ed did but I am
>> not sure on the limitations.  Does the fuel/air mix pose a threat to the
>> integrity of a composite intake? Backfire? Combustible? For those of us
>> that built their airframes from composite it might be easier than
>> welding.  Just a thought.
>>
>> Joe Berki
>> Limo EZ
>> ----- Original Message -----
>> From: <tonyslongez@cox.net>
>> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
>> Sent: Thursday, May 24, 2007 4:09 AM
>> Subject: [FlyRotary] Re: intake tubing
>>
>>
>>
>>> Thanks all for your comments. I really do appreciate it. This list
>>>
>> is by far the best rotary list around. I'm not so sure I want to drill
>> holes in my engine to make a Paul-Port looks like I will be going with
>> the Mistral
>> intake, if I can get Francoise to answere my e-mail. I think he is a bit
>> busy these days. Anyway thanks for the reality check. I'll get back to
>> sanding and filling and sanding and so on and so on. If I have anymore
>> bright ideas I'll let you guys in on it straight away.
>>>
>>> Tony
>>>
>>>
>>> --
>>> Homepage:  http://www.flyrotary.com/
>>> Archive and UnSub:
>>>
>> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>>
>>>
>>>
>>> --
>>> No virus found in this incoming message.
>>> Checked by AVG Free Edition.
>>> Version: 7.5.467 / Virus Database: 269.8.0/817 - Release Date:
>>>
>> 5/24/2007
>> 4:01 PM
>>
>>>
>>>
>>
>>
>> --
>> Homepage:  http://www.flyrotary.com/
>> Archive and UnSub:
>> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>>
>>
>>
>
>
> -al wick
> Cozy IV powered by Turbo Subaru 3.0R with variable valve lift and cam
> timing. Artificial intelligence in cockpit, N9032U 240+ hours from
> Portland,
> Oregon
> Glass panel design, Subaru install, Prop construct, Risk assessment info:
> http://www.maddyhome.com/canardpages/pages/alwick/index.html
>
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
>