Volcanic Ash and Piston Engine Air Filters
Thread Starter
Joined: Oct 2007
Posts: 1,831
Likes: 16
From: Moray,Scotland,U.K.
Volcanic Ash and Piston Engine Air Filters
Does anyone know how LyCon air filters compare with car filters as regards efficiency in stopping very small particles?
Does anyone have experience of the effect on engine life of low levels of ash?
I've read the USGS advice re cars etc.
Does anyone have experience of the effect on engine life of low levels of ash?
I've read the USGS advice re cars etc.
Joined: Mar 2000
Posts: 8,571
Likes: 3
From: Arizona USA
Don't know anything about LyCon air filters, however, I do know about another type...the Brackett Air Filter.
These are manufactured for a wide variety of general aviation airplanes, are made from two special types of foam and coated with a propriatory brand of rather thick oil.
VERY effective in keeping out even the smallest bit of ash, grit etc from your aircraft engine intake system.
Brackett Aero Filters | Home
These are manufactured for a wide variety of general aviation airplanes, are made from two special types of foam and coated with a propriatory brand of rather thick oil.
VERY effective in keeping out even the smallest bit of ash, grit etc from your aircraft engine intake system.
Brackett Aero Filters | Home
Joined: Jul 2001
Posts: 4,960
Likes: 17
From: Australia
Folks,
The short answer is: Not well.
Dry paper and similar dry filter media stop large rocks and small babies, (figuratively speaking), the problem is they they have to physically block the particles, and the more efficient they are, the more the airflow is also blocked.
Some of you may know the "oiled paper/foam" type filters, ( K&N or similar) where the "sticky" oil holds a greater %, and smaller size of the grit in a (generally) synthetic paper/foam rubber primary filter. I have never seen this kind of filter with aviation approval.
Whether it is pumice, basaltic or other volcanic ejecta, they all make great grinding paste. I know, from fitting hot air filters, and oversized cold air filters to Ag. engines, what a difference it makes to engine life --- the barrels, pistons and rings --- and that was good old common or garden variety dust, benign compared to volcanic dust.
Few engines have hot air filters, so if carb anti-ice is required, you will probably be breathing unfiltered air.
Tootle pip!!
The short answer is: Not well.
Dry paper and similar dry filter media stop large rocks and small babies, (figuratively speaking), the problem is they they have to physically block the particles, and the more efficient they are, the more the airflow is also blocked.
Some of you may know the "oiled paper/foam" type filters, ( K&N or similar) where the "sticky" oil holds a greater %, and smaller size of the grit in a (generally) synthetic paper/foam rubber primary filter. I have never seen this kind of filter with aviation approval.
Whether it is pumice, basaltic or other volcanic ejecta, they all make great grinding paste. I know, from fitting hot air filters, and oversized cold air filters to Ag. engines, what a difference it makes to engine life --- the barrels, pistons and rings --- and that was good old common or garden variety dust, benign compared to volcanic dust.
Few engines have hot air filters, so if carb anti-ice is required, you will probably be breathing unfiltered air.
Tootle pip!!
Thread Starter
Joined: Oct 2007
Posts: 1,831
Likes: 16
From: Moray,Scotland,U.K.
Thanks. When I said "LyCon" I meant the filters usually fitted to aircraft with these engines. Ours seems to have the oiled foam type. Maybe Bracket.
Last edited by Maoraigh1; 18th April 2010 at 09:02. Reason: Add text
