REFLECTOR: Oil lines and ground wire.

[Scott Derrick]

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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