REFLECTOR: Oil lines and ground wire.

Scott Derrick scott at tnstaafl.net
Sat Sep 3 22:05:34 CDT 2005


How are the copper lines terminated? 

Flared with AN fittings like you would do with aluminum? or  soldered 
fittings?

Scott

AnnSam wrote:

>I use both lines tied together at both ends. They both run down the same
>duct but there is a hard rubber sleeve over each to keep down heat transfer.
>
>-----Original Message-----
>From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
>Behalf Of Scott Derrick
>Sent: Saturday, September 03, 2005 10:18 PM
>To: Velocity Aircraft Owners and Builders list
>Subject: Re: REFLECTOR: Oil lines and ground wire.
>
>
>Are you using both lines for ground or just one.
>
>I hadn't thought about using copper lines,  per Al's numbers that would
>provide over 1/2 again the conducting capability over aluminum.
>
>I will try to find the burst pressure for soft copper tube..
>
>Scott
>
>
>AnnSam wrote:
>
>  
>
>>My plane was completed in the end of 93 and I ran 2, 1/2 inch copper lines
>>which have been used as my ground conductor as well as the oil cooler
>>    
>>
>lines.
>  
>
>>My plus line is a #2 conductor
>>and I've never had any starting problems.
>>
>>-----Original Message-----
>>From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
>>Behalf Of Scott Derrick
>>Sent: Saturday, September 03, 2005 11:04 AM
>>To: Velocity Aircraft Owners and Builders list
>>Subject: REFLECTOR: Oil lines and ground wire.
>>
>>
>>My plane came with high pressure hoses for oil lines. Both ran in the
>>pilot side duct.  I noticed that the manual calls for 1/2 " aluminum
>>lines.   I was considering replacing the high pressure rubber/steel flex
>>lines with aluminum.  Much lighter and smaller, those hydraulic lines
>>are huge and heavy.
>>
>>I was also considering running one up the pilot side and the other down
>>the copilot side to take advantage of the additional cooling benefits.
>>Has anybody done the comparison of running both in one duct and one in
>>each to see if there really is an advantage?
>>
>>Then I got to thinking about using the oil lines for my ground return
>>path from the battery to the engine?  Aluminum is a pretty good
>>conductor, and having two lines would seem to provide a substantial
>>return path if I bonded both tubes at both ends?
>>
>>Anybody do this?
>>
>>Scott
>>    
>>
>
>
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