Hi, the statement quoted below seems to come from a position that I might
have suggested deletion of the strain relief/vibration loop in the oil line
or other application.
I did not make that assertion.
My assertion is that there are more reasons than only strain relief or
vibration tolerance to
To KRnet Attn: John Gotschall
On the rigid installations, that you described, with no vibration,
whatsoever, Consider that all metals expand and contract, via
temperature changes. Engine oiling systems have a rather large
temperature change. You will never see the expansion and contraction
On many pressure sensing systems I have observed (similar your oil pressure
gauge) installations where there are several bends along the copper tube
which are plenty enough to take up thermal or vibration or pressure
stresses and the entire system mounted on a solid welded machine frame
having no v
OK...copper it will be.
On Tue, Dec 14, 2021, 5:58 AM Jeff Scott wrote:
> It is an Experimental, so you can do as you think best; However, the
> industry standard is as described by Randy Smith using a .040" orifice, and
> connecting with 1/8" copper line with a loop in the line between the engi
Here is the link to the AN3 braided hoses
https://www.smileysracing.com/shopping/productDetails.aspx?i=13692&c=1220
On Tuesday, December 14, 2021, 07:17:35 PM CST, Luis Claudio via KRnet
wrote:
Gary
I purchased a 24" braided 1/8" hose for my oil pressure sender (which is
electric) wi
cents!!
John Martindale
Unit 39
40 Solitary Islands Way
Sapphire Beach NSW 2450
AUSTRALIA
From: Jeff Scott
Sent: Wednesday, December 15, 2021 12:58:07 AM
To: krnet@list.krnet.org
Subject: KR>Re: oil pressure
It is an Experimental, so you can do as you th
On 12/14/2021 8:18 AM, Flesner wrote:
If you go that far you might as well replace the line entirely and go
electric.
Larry Flesner
+++
A quick check with A.S. indicates you could go cheap for less than $150
($50 for sender, $70 for
On 12/13/2021 11:29 PM, Gary Sack wrote:
I will check to see if I have a .040 restriction, and while I am at it,
I might as well replace the line (probably with plastic). And then I will
fly with complete confidence for the rest of my life... I'm pretty old.
Gary Sack N81JM
+++
It is an Experimental, so you can do as you think best; However, the industry
standard is as described by Randy Smith using a .040" orifice, and connecting
with 1/8" copper line with a loop in the line between the engine and firewall
to absorb the vibration. It's been successful through 100 yea
I enjoy the KR Group because it seems like there are several of you out
there who know a whole lot more than me about KR's and airplanes in
general. A true resource. Thanks.
As to why I don't run copper tubing, it is because it seems much more
likely to fail from vibration and fatigue. Plastic i
You lose your oil pressure indication, and you pump your oil overboard through
the capillary tube. Generally speaking, mechanical oil pressure gauges using a
hose or tube to the transducer or gauge should have a restricting orifice in
the fitting at the port on the engine. Typically the restric
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