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saolesen(at)sirentel.net
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 Posted: Tue Aug 11, 2009 6:48 pm Post subject: Crushed oil filter |
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Here are a couple of pictures of my Kelly oil filter after about 35
hours. There were no engine oil pressure issues or any indication
that there was a problem with the filter. I was using straight
weight Aeroshell 80 and changed the oil in May so there were no cold
starts. I have switched back to Champion filters since that was my
SECOND Kelly filter to collapse. This month's Aviation Consumer has
an article on oil filters and rates the Kelly filter dead last. I
talked with Mattituck's engine guru, Mahlon Russel, at OSH and he
thought the problem was entirely with the filter.
Sheldon Olesen
N475PV 105 hours
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Tim Olson
Joined: 25 Jan 2007
Posts: 2879
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| Posted: Tue Aug 11, 2009 7:40 pm Post subject: Crushed oil filter |
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Wow, that's pretty amazing. I did read the Aviation Consumer
article, and I have used all 3 filters in my plane....the
Champion, the Kelly, and the Tempest. In fact, I've used
each one more than once. For the past 6 I had a case of
Tempest, and I was due to buy some more, so at OSH I went to
the Tempest booth and asked them about the article. They
actually are pretty sad that they didn't get to put in
their rebuttal in time for print, but, to add a twist I'll
fill you in. Indeed the things that they gave the edge
to Champion over, some of them may not be 100% accurate, and
those things apply only to one model of oil filter. For
me, and most RV-10's, we'll use the 48110 filter. In our
case I think Tempest really does have a better filter.
Even where they mention the spring that pushes the filter
in the can...they talk about Champion having a larger spring
while the Tempest and Kelly have a cupped plate spring.
As it turns out, there are good reasons to use that type
of spring...it distributes the pressure to the outside
of the element to hold it more securely from being moved
by pressures and G loads. Anyway, after talking to them
and having them point out all of the things that were
different again, and where the article is less accurate or
doesn't apply to me, I immediately went over to Aircraft
Spruce and bought a case of Tempest to take home. After
cutting many of them open, I can tell you that they seem
more durable than the Champions, and should give just as
good a service (and better in a couple respects) for less
money. The Kelly, on the other hand, I used a couple of
them and decided I'd never buy them again...they were not
nearly as durable and cut open much much easier.
So I agree with you. No Kelly's, but I'd definitely give
high marks to Tempest after experience with them. I
think I've used probably 15 - 18 Tempest filters on
2 planes, and probably just as many Champions.
The magnet in the Tempest is a minor little bonus that
I like, as well.
Tim Olson - RV-10 N104CD
Sheldon Olesen wrote:
| Quote: |
Here are a couple of pictures of my Kelly oil filter after about 35
hours. There were no engine oil pressure issues or any indication that
there was a problem with the filter. I was using straight weight
Aeroshell 80 and changed the oil in May so there were no cold starts. I
have switched back to Champion filters since that was my SECOND Kelly
filter to collapse. This month's Aviation Consumer has an article on
oil filters and rates the Kelly filter dead last. I talked with
Mattituck's engine guru, Mahlon Russel, at OSH and he thought the
problem was entirely with the filter.
Sheldon Olesen
N475PV 105 hours
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n801bh(at)netzero.com
Guest
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| Posted: Wed Aug 12, 2009 5:13 am Post subject: Crushed oil filter |
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I would sent this to the local FAA office so they can see it firsthand... Clearly there is an "issue"
do not archive
Ben Haas
N801BH
www.haaspowerair.com
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aviationpro
Joined: 12 Aug 2009
Posts: 1
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| Posted: Thu Aug 13, 2009 12:27 pm Post subject: Re: Crushed oil filter |
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After reading your post and reviewing your pics it reminded me of other complaints I have seen regarding oil filters. Just a note - oil filters do not burst or collapse on their own - the chances of that happening are slim to none. There is another issue causing that condition. Here is a link to a gentleman posting on the AOPA forum in which he blames the oil filter for a problem and then goes on to claim how the company was selling defective parts, putting pilots and their passengers in jeopardy and demanding an FAA investigation much like this posting.
http://forums.aopa.org/showthread.php?t=49420
His mechanic, the overhauler of his engine and all the forum experts told him it was the faulty filter and there was not a problem with his engine. The oil filter manufacturer pleaded with him to look at his lines and evaluate his engine to find the root cause because they knew the filter was not the culprit.
Here is his retraction on his false statements about the filter after he found a problem in one of his lines:
http://forums.aopa.org/showthread.php?t=50026
As for the article regarding oil filters - I have used Kelly filters for 4 years without any issues at all. The fact that Kelly produces a filter that exceeds the same specs with a thinner wall and less media tells me it is superiorly engineered to the other manufacturers.
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dave.saylor.aircrafters(a
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| Posted: Fri Aug 14, 2009 9:17 am Post subject: Crushed oil filter |
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Here's the statement from the AOPA forum:
*************************************************************
Regarding my prior post, "Oil Filter Failure", where my Kelly Aerospace oil filter burst open on the ramp, I have a solution to report.
It was NOT the oil filter. My A&P sliced open the hoses that went to my ADC filter adapter and there's a nice, big rubber flap in one hose that was overlooked when the hoses were made up. The in/out orientation was correct when it blew, but it is likely that hose-b got swapped with hose-a when the new engine was installed, therefore the oil direction in the defective hose was against the flap. There had been 4 previous flights where this could have closed, so I'm just thankful it happened on the ramp.
I wanted to make it clear that it was not a fault of the oil filter.
*******************************************************************************************
FWIW, I can add that you should check all new hoses really well. I've seen several examples of that exact failure, even one from a professional hose shop. A flap in the hose is almost impossible to detect unless you're specifically looking for it, and it's relatively easy to make even using the right tools.
--
Dave Saylor
AirCrafters LLC
140 Aviation Way
Watsonville, CA 95076
831-722-9141 Shop
831-750-0284 Cell
[quote][b]
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