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1. 01:07 AM - Re: 912 oil return line in silicon (Brian Davies)
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| Subject: | 912 oil return line in silicon |
Not all silicone hoses are the same spec. Standard silicone hose is
porous to fuel and oil. If you want to use silicone hose in this
application you need to specify Fluorosilicone Lined hose which is OK
for oil and diesel.. If you really want full protection from fuels and
oils you need to specify products such as Silflex Profuel.
Regards
Brian Davies
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of
Richard Girard
Sent: 22 February 2020 17:14
Subject: Re: RotaxEngines-List: 912 oil return line in silicon
What is the manufacturer's recommendation? IF they say it's okay,
you're good to go. I've only used the blue silicone hose on coolant
lines and the stuff, though pricey, is amazing. After 15 years on a 582
install (with a lot of outside time) it's still as supple as new. Over
time it pays off in replacement costs and time spent. For your
application I would recommend you run fire sleeve over it though.
Best of luck and safe flying,
Rick
On Fri, Feb 21, 2020 at 1:05 PM Robert Toth <rtoth4310@gmail.com> wrote:
<rtoth4310@gmail.com>
John I believe silicon is fine just watch the routing around the
exhaust. I have them on my 912
Sent from my iPhone
> On Feb 21, 2020, at 1:53 PM, JohnFrance <77alembert@gmail.com> wrote:
>
<77alembert@gmail.com>
>
> Hello,
> I am replacing the hoses on my 912 and I am thinking of using silicon
hose for the oil return line. This is probably the hose that is the most
affected by heat as just above the exhaust system. It works in a low
over pressure environment of around 0,35 bar yet I have never seen a
silicon tube used on this line. On the other hand the oil pump feed line
(used in an under pressure environment) is often made of silicon.
> Is there a reason for not using a silicon return line as the rubber
ones harden due to heat?
> Regards,
> John
>
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> Europa mono Nr 192
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> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=494929#494929
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