I spoke with a guy at Parker this morning about rated value's for parflex
and similar 1/4" .035 sidewall nylon tubing and he reckons anything above
350-450 PSI is likely to cause problems after a while. He was unaware of a
specific problem related to weakening with UV exposure, but he thought it
quite likely after several years.
I'm definitely going for ali and 601/ae701 hose flexibles in my build. -4
for brake lines, and -6 for fuel and float hydraulics.
Nigel
745E
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of
Bruce Georgen
Sent: 22 November 2005 06:02
To: rebel-builders@dcsol.com
Subject: Re: Brake pressure in Rebel/Elite ?
After blowing my float line in BC last summer, after setting in the hot sun
for several hours while fishing with Walter, I leave my selector in the up
position. When in the neutral position I still get pressure build up.
Bruce
--Original Message-----
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Sent: Nov 21, 2005 11:43 PM
To: rebel-builders@dcsol.com
Subject: Re: Brake pressure in Rebel/Elite ?
...unfortunately MAM is throwing Beige Semi-rigid nylon tube in the amphib
kits now (well at least the one I got last Thur) instead of the ship list
Parker Parflex...me not amused with being expected to try something
different (and I won't be)! I know what you're saying about bubble chasing,
Walter, with the semi-clear parker parflex. Very easy to coax it up the
struts. Once you get it up towards the cabin you can cycle back and forth
partially to get it into the reservoir without pushing the air back down to
the floats.
----- Original Message -----
From: "Walter Klatt" <Walter.Klatt@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 11:39 PM
Subject: RE: Brake pressure in Rebel/Elite ?
I still have the original MAM plastic brake and hydraulic lines
in mine, and no problems since I solved the original fitting
leaks when first installed. One thing I do with mine that might
help, is I leave the valve lever in the middle/lock position,
which may relieve pressure on my lines.
Another advantage of the plastic lines is that you can see air
bubbles which were easy to get rid of then after installation
without having to bleed any lines. I retracted the front wheels
and then tilted the plane up or down to slowly move the air
bubbles where I wanted them to go.
Walter
-----Original Message-----
From: mike.davis@dcsol.com
[mailto:mike.davis@dcsol.com]On Behalf Of
Angus McKenzie
Sent: Monday, November 14, 2005 11:03 AM
To: rebel-builders@dcsol.com
Subject: Re: Brake pressure in Rebel/Elite ?
Hi Ken and Drew
The hydraulic lines in the cockpit blew in several
spots and the brake lines
have blown about 3 times once on wheel gear and twice
on floats. So, now we
have braided stainless and solid aluminum from your
feet to the calipers for
the brakes, this made a significant improvement
increasing brake efficiency.
The plastic lines on the hydraulic float pump have
blown on the pressure
side in three spots, (our Rebel will leak oil out of
the fuselage on hot
days for the rest of its life, I should probably
reweigh it and do a W&B
amendment for the spilled oil onboard) anyway, I now
have solid aluminum
from the pump to the floats but still have plastic
lines in the floats,
though I expect to replace that plastic line as well.
My most recent structural "need" is doublers at the
front of the rear corner
wraps under the door sill.
Sorry to have missed the get-together in Brampton on
Sunday-family issues.
Angus..............049R
----- Original Message -----
From: "Drew Dalgleish" <drewjan@cabletv.on.ca>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 14, 2005 8:30 AM
Subject: Re: Brake pressure in Rebel/Elite ?
hydraulic lines.At 11:02 PM 11/13/2005 -0500, you wrote:because of leaks. TheyI ended up replacing all my float hydraulic linesbrake lines though. Iwere not as high quality lines or fittings as theorigional instalation.thoughr Angus went with all aluminum lines on his-------------------------------------------------------Drew
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