REFLECTOR: Aluminum lines on the engine

[Scott Derrick]

Yes I am.  Pressure lines connected directly to the engine should either 
be flexible preferably with a braided cover, or solid steel.

the vibration may cause early fatigue failure in aluminum or copper.

Scott

-------- Original Message --------
Subject: Re: REFLECTOR: Aluminum lines on the engine
From: Brian Michalk <michalk at awpi.com>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Date: 11/30/2012 07:42 AM

> Are you saying that braided stainless is preferable to hard aluminum?
> Either way, I assume both must be heat sleeved.
>
> On 11/30/2012 08:27 AM, Scott Derrick wrote:
>> sounds like you did it right to me. Yeah, you should probably replace
>> the flex lines every 2,000 hours or so.
>>
>> Scott
>>
>> -------- Original Message --------
>> Subject: REFLECTOR: Aluminum lines on the engine
>> From: Brian Michalk <michalk at awpi.com>
>> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
>> Date: 11/30/2012 06:46 AM
>>
>>> Right now I have a few stainless braided hoses on the engine for oil to
>>> the turbo.  I'm concerned about long term aging due to the heat, and am
>>> wondering about replacing it with hard aluminum line.
>>>
>>> What is the best practice for this?  The Franklin did originally come
>>> with a rubber type of hose to drain oil off the fuel pump pad.
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>
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