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1. 02:23 PM - fuel vent lines ()
2. 02:59 PM - Re: fuel vent lines (Stein Bruch)
3. 10:27 PM - Re: fuel vent lines (C. Dan Miller)
Message 1
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Seems to me the fuel vent line design leaves a lot to be desired when it
comes to installation and maintenance. In researching
problems/solutions with these, I came across references to the coiled
lines used on the F1 Rocket and (I believe) the RV10. They seem to work
fine and I am leaning that direction, but I do not have as much info as
I feel I need to be comfortable incorporating this mod. Since I am
doing a QB, my plan would be to run a short L-shaped tube between each
existing belly vent line hole pair and bulkhead fitting (using what is
already there) and coupling up the the coil to that fitting. It would
then be easy to remove the short lines inside the gear towers to avoid
possible inadvertent damage which could occur when retorquing the
landing gear bolts or any other maintenance/servicing inside the towers.
The only fab concern I have will be to make sure the new vent line
routing will not interfere with the brake lines, but I see that as a
minor issue easily dealt with.
Guess I=99m looking for a confidence builder here. Any and all
feedback gratefully received. Photos if possible.
Stan Loer
RV-8 (Very slow) QB
Message 2
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My humble suggestion would be to do it as designed. I am not aware of
any glaring issues with the standard installation over the many
thousands of RV=99s flying with the vent lines installed that way,
nor in any of them I=99ve built/own/flown in the past number of
decades. As soon as you start changing things for no good reason, you
become a test pilot, test engineer, and also could create other
unforeseen consequences. There are people who=99ve done it
differently and changed fuel systems, but none can point to any
conclusive benefit nor reasoning for doing so, other than their desire
to do so (or someone=99s idea of what =9Cmight=9D be
better). The fact is that the standard Van=99s way of doing
things usually ends up being the best. No reason to create a solution
to a problem that doesn=99t exist, nor to expend much energy and
time researching said solution to the problem that doesn=99t exist
when that time could be best spent working on the plane. My opinion for
confidence building is to follow the plans and =9Cgit =98er
done=9D! J
Just my 2 cents as usual.
Cheers,
Stein
From: owner-rv8-list-server@matronics.com
[mailto:owner-rv8-list-server@matronics.com] On Behalf Of
stazel@cpros.com
Sent: Saturday, April 13, 2013 4:23 PM
Subject: RV8-List: fuel vent lines
Seems to me the fuel vent line design leaves a lot to be desired when it
comes to installation and maintenance. In researching
problems/solutions with these, I came across references to the coiled
lines used on the F1 Rocket and (I believe) the RV10. They seem to work
fine and I am leaning that direction, but I do not have as much info as
I feel I need to be comfortable incorporating this mod. Since I am
doing a QB, my plan would be to run a short L-shaped tube between each
existing belly vent line hole pair and bulkhead fitting (using what is
already there) and coupling up the the coil to that fitting. It would
then be easy to remove the short lines inside the gear towers to avoid
possible inadvertent damage which could occur when retorquing the
landing gear bolts or any other maintenance/servicing inside the towers.
The only fab concern I have will be to make sure the new vent line
routing will not interfere with the brake lines, but I see that as a
minor issue easily dealt with.
Guess I=99m looking for a confidence builder here. Any and all
feedback gratefully received. Photos if possible.
Stan Loer
RV-8 (Very slow) QB
Message 3
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Subject: | Re: fuel vent lines |
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