REFLECTOR: tube flare question

[Glenn Babcock]

" Pretty much what a flaring tool does, no?"

Actually, no.  Two problems with this approach.  First, the flaring tool is
made out of tool steel, the fitting is aluminum.  Attempting to flare the
tube with the fitting will damage the face of the fitting.  Second, the
automotive tool over-flares the tube to 45 degrees, and you can't get it
back to 37 by tightening (or over-tightening) the fitting.  

Regards,
Glenn

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of sbjknox
Sent: Tuesday, March 15, 2011 10:43 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: tube flare question


----- Original Message -----
From: "Ron Stacey " <rlstacey at earthlink.net>

Subject: Re: REFLECTOR: tube flare question


> Matt, You should be using a 37 degree aviation flaring tool; 
> automotive is
> 45 degrees and won't work.

I'll take the heretical view that for aluminum tubing the angle of the
flaring tool makes no meaningful difference... when you tighten the nut, the
tube conforms to the mating fitting.  Pretty much what a flaring tool does,
no?

$0.02

Sid Knox
Oklahoma

Velocity  173 RG  N199RS
Starduster  N666SK
KR2         N24TC
W7QJQ



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