Champion Aerospace CH48108-1 C&P

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Again new to this so let me in on any feedback. This was run on a Lycoming IO-360 Airplane Engine for 25 hours. These filters tested 99% at 40 microns as discussed here.

Flashlight Test


Measured can thickness at 0.7mm.
IMG_5138.webp


8 hole endcap and 2 piece anti-drain back valve?
IMG_5140.webp


Metal Core with Louvers
IMG_5130.webp

IMG_5141.webp


Coil spring bypass valve with fiber? Gasket/washer.
IMG_5131.webp

IMG_5139.webp


Another Coil Spring that holds media secure between the dome and top endcap? What is this called?
IMG_5132.webp


Metal Crimped Seam
IMG_5136.webp


Roughly 96”x2.5” of what I think is cellulose media for about 240 sq in.
IMG_5137.webp
 
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No light leak because it uses a coil spring to hold the guts tight instead of a leaf spring in the end cap hole. The bypass valve is integrated in the end cap with a gasket, and bypass valves will all pass a light test.
 
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Again new to this so let me in on any feedback. This was run on a Lycoming IO-360 Airplane Engine for 25 hours. These filters tested 99% at 40 microns as discussed here.

Flashlight Test


Measured can thickness at 0.7mm.
View attachment 276411

8 hole endcap and 2 piece anti-drain back valve?
View attachment 276415

Metal Core with Louvers
View attachment 276405
View attachment 276414

Coil spring bypass valve with fiber? Gasket/washer.
View attachment 276406
View attachment 276417

Another Coil Spring that holds media secure between the dome and top endcap? What is this called?
View attachment 276407

Metal Crimped Seam
View attachment 276409

Roughly 96”x2.5” of what I think is cellulose media for about 240 sq in.
View attachment 276410

Nice work. What went back in and on? Thank You
 
Excellent build quality. So-So filtering ability if 40um 99% is all it can achieve. I would assume that flow is paramount over efficiency?

I’m not sure if the low efficiency is an intentional part of the design compromise or a product of old design/limited market/regulatory requirements. Some owners of experimental/amateur built (EAB) airplanes like mine have started using automotive filters if they fit. There are really only two brands of FAA blessed filters for non-EAB (certified) piston airplanes and the other brand is apparently even worse on efficiency.

Nice work. What went back in and on? Thank You

Another of the same type went back on.
 
I’m not sure if the low efficiency is an intentional part of the design compromise or a product of old design/limited market/regulatory requirements. Some owners of experimental/amateur built (EAB) airplanes like mine have started using automotive filters if they fit. There are really only two brands of FAA blessed filters for non-EAB (certified) piston airplanes and the other brand is apparently even worse on efficiency.



Another of the same type went back on.
So the engine oil wasn’t drained and replaced? Thank You
 
Excellent build quality. So-So filtering ability if 40um 99% is all it can achieve. I would assume that flow is paramount over efficiency?

Many people are unaware that these engines are not automatically shipped from the factory with an oil filter. It is an option. My 1971 Cessna 177RG had no filter when I purchased it in 2007. After engine overhaul, I choose the 'filter' option.

In 2022, we purchased a brand new Extra NG with Lycoming's newest engine, the Aerobatic AEIO580. Yup, you guessed it, no oil filter.

The OCI on engines with no filter is 25 hours. With a filter it 'might' be 50 hours, but few owners go that long. Shell's study indicated that 35 hours and aircraft engine oil was fully contaminated.

I think the direction of your thought is correct. The filters are designed to provide very low restriction to oil flow, in just about any situation. As I mentioned above, the filter I must use has no bypass or anti drainback. Oil pressure is instant and high when cold. Oil pressure is measured from a direct reading gauge, taken from a port at the front of the engine, the last place that gets oil.
 
Looks like its OEM by Baldwin, same louver and gasket sealed bypass spring assembly design as their usual heavy duty filters. They normally have a 2 piece ADBV from my experience of cutting their red cans open at work.
 
Excellent build quality. So-So filtering ability if 40um 99% is all it can achieve. I would assume that flow is paramount over efficiency?
Depends on the filter, but as seen in Ascent's ISO testing, the low efficiency filters (Boss and Wix XP) really were only a little less flow restrictive - ie, the dP vs flow curves were a little better, but not anything that would matter to a PD oil pump. They all came in at +/- 2 PSI of the average of 7 PSI of dP at the flow and oil viscosity he was using in the test. Low efficiency doesn't necessarily mean lower dP vs flow.
 
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I talked to some reps from champion at a trade show this weekend and they confirmed that flow was the primary concern of the design. They argued that SAE 50 oil needed a different type of filter than SAE 30 or 20 like most cars use, and that the efficiency didn’t need to be as high with the thicker SAE 50 oil. They also mentioned higher burst pressure. They are of course in the business of selling these filters but that’s what they said when I asked why I shouldn’t use an auto filter with 99% at 20 microns for 20% the cost.
 
Again new to this so let me in on any feedback. This was run on a Lycoming IO-360 Airplane Engine for 25 hours. These filters tested 99% at 40 microns as discussed here.

Flashlight Test


Measured can thickness at 0.7mm.
View attachment 276411

8 hole endcap and 2 piece anti-drain back valve?
View attachment 276415

Metal Core with Louvers
View attachment 276405
View attachment 276414

Coil spring bypass valve with fiber? Gasket/washer.
View attachment 276406
View attachment 276417

Another Coil Spring that holds media secure between the dome and top endcap? What is this called?
View attachment 276407

Metal Crimped Seam
View attachment 276409

Roughly 96”x2.5” of what I think is cellulose media for about 240 sq in.
View attachment 276410
 
We used that same filter starting back in the late 1980s on our C182 with a Continental O-470. Oil Flow through the filter was likely more of a design criteria then fine filtration with the higher viscosity single weight oils that were commonly used on reciprocating aircraft engines at that time. The multi-viscosity oils were starting to be used more as time progressed.

We, as did many, used AeroShell AD (ashless dispersant) 100 which was a SAE Grade 50 for most of the year. Midwest winters we would switch to 80 which was an SAE Grade 40.

Thorough engine pre-heat for a cold engine was the key when using the the thicker straight weight oils.

Slick
 
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