Air Filter on 65-LA

[Dan1940Chief]

Yesterday I was cleaning the engine compartment and getting familiar with the engine prepping for an oil change (looks like .020 safety wire on the oil drain bolt -- is that right?).

The air filter on the Stromberg carb is black -- and held in place with a wide-spaced screen.

Anyone know how to service? Where to get replacements?

[Paul Agaliotis]

Dan,
I use .032 for most areas including the oil plug. The prop gets .040 as does the primary flight control turnbuckles when you use a single wrap method.
Paul

[Dan1940Chief]

Dan,
I use .032 for most areas including the oil plug. The prop gets .040 as does the primary flight control turnbuckles when you use a single wrap method.
Paul

Ok..thanks!

Is there a difference between "aviation grade" and standard safety wire?

[Paul Agaliotis]

Dan,
I don't know about the standard to Aviation grade but it should be Stainless steel and in the annealed condition. There are many different materials that lock wire is made from.
Univair could have the air filter you need. The old airboxes all tend to use a standard filter element. Get some measurements and give them a call. If your box is damaged it might be time for an upgrade. Look the diverter valve over real close.
Paul

[Dan1940Chief]

Dan,
I don't know about the standard to Aviation grade but it should be Stainless steel and in the annealed condition. There are many different materials that lock wire is made from.
Univair could have the air filter you need. The old airboxes all tend to use a standard filter element. Get some measurements and give them a call. If your box is damaged it might be time for an upgrade. Look the diverter valve over real close.
Paul

I certainly will.... diverter valve?

[Paul Agaliotis]

Dan,
The flapper, if it cracks off the pieces go into the carburetor and slows or stops the engine. Most of the parts we are installing on our airplane are 50 years old. It's good practice to look this stuff over pretty good.
Paul

[Dan1940Chief]

Dan,
The flapper, if it cracks off the pieces go into the carburetor and slows or stops the engine. Most of the parts we are installing on our airplane are 50 years old. It's good practice to look this stuff over pretty good.
Paul

Ahh..ok.

I gave the exterior of the engine a very close look over yesterday. I find a tiny oil leak from one of the oil return valves -- minuscule, given I've lost perhaps a quart in 20 hours.

[Paul Agaliotis]

Dan,
That little engine will give you great service. Don't expect too much, it's no powerhouse but still a fine engine. They don't have many, here in the West. Our elevation changes so much that people like the added power the Continentals give them. In two hours you can fly from a sea level airport to 5000 ft airports. East of the Rockies most of the tall stuff are water tanks or an antenna.
Paul

[Dan1940Chief]

Dan,
That little engine will give you great service. Don't expect too much, it's no powerhouse but still a fine engine. They don't have many, here in the West. Our elevation changes so much that people like the added power the Continentals give them. In two hours you can fly from a sea level airport to 5000 ft airports. East of the Rockies most of the tall stuff are water tanks or an antenna.
Paul

So far so good -- it has 200 hours on it since a rebuild in 1979. I've been pretty cautious and have stayed near airports or big fields until I'm sure that minimal use hasn't caused fatal corrosion.

The one peace of mind I have is that I can land at 35 MPH and ground loop if I need to put it down in a really tight spot!!

[Dan1940Chief]

I removed the steel screen from the air intake today and found -- nothing -- no filter, no nothing.

Should there be an air filter element here????

[Dan1940Chief]

The existing screen is a bit worn out -- what material should I use to replace?

[roberd42]

I put a Brackett air filter on my 65LA Stromberg carb. Rev. D meets current ADs.

[Rodney Zapf]

I put a Brackett air filter on my 1941 Chief 65LB, Engine static checks as well as it did with no filter. I don't know if any one has ever done a static thrust check. Today I put a fish scale on a tether from the tail wheel to a fence post to see how many pounds of thrust I could develop at full power. With a 70X36 Sensenich prop I was able to pull 250 pounds on the scale (2150 RPM). I have a 32X70 ordered from Sensenich, it will be interesting to see the difference. A next door neighbor has a Cub with a 85 hp Continental. He was able to pull 330 lbs (2450 RPM) on the scale. I was pretty proud of my little Lyc. I can't wait to experiment with a 65 hp Continental to see how much "stronger" they are than the 0-145.