Does anyone know what baffle material is used in the valve assembly? I'm thinking it's the T-8071 Black Silicone engine baffle. Yes, no, maybe??
Thanks,
Tim

TJ Carr wrote:Does anyone know what baffle material is used in the valve assembly? I'm thinking it's the T-8071 Black Silicone engine baffle. Yes, no, maybe??
Thanks,
Tim

Try Dynamic Propeller in Pasco, Washington .

Ditto on Dynamic Propeller in Pasco, Washington. I had them overhaul my air box and it came back new! Be sure and ask them about their airbox support strap STC it will really save your airbox.

GuyWagon

TJ Carr wrote:Does anyone know what baffle material is used in the valve assembly? I'm thinking it's the T-8071 Black Silicone engine baffle. Yes, no, maybe??
Thanks,
Tim

I think the question was what kind of baffle material as in the rubber like stuff on the carb heat door? 2 1/2 years ago I replaced the old hard black stuff with fresh red (orange) silicon and low and behold now after 250 hours the stuff is hard and brittle. When you find out let me know.

Ya didn't ask about airbox OH's but since other people piped up about it....a friend of mine had Atlee Dodge rebiuld his C180 airbox a few years back. Came back looking better than new but the price tag was over a thousand bucks...seemed excessive.

My flapper is baffled with a weird felt-like material, if I remember correctly. Probably a good thing to get correct though as you don't want the brittling effect and then have chunks peeling off.

1SeventyZ wrote:My flapper is baffled with a weird felt-like material, if I remember correctly. Probably a good thing to get correct though as you don't want the brittling effect and then have chunks peeling off.

I thought you don't have an airplane anymore? You sold one and somebody crashed the other one you rented?

Glidergeek wrote:

1SeventyZ wrote:My flapper is baffled with a weird felt-like material, if I remember correctly. Probably a good thing to get correct though as you don't want the brittling effect and then have chunks peeling off.

I thought you don't have an airplane anymore? You sold one and somebody crashed the other one you rented?

170 is still on the market. I was cheating on her with the Champ.

Well, I found out what the material is for the airbox valve. It is the T-8071 fiberglass mesh, Silicone Engine Baffle material. It's manufactured by Brown Aircraft in Florida. The T-8071 has a temperature window of -60F to +550F degrees. It is available in a 1/8th in. thick pebbled finish or 3/32nd in. smooth. I'm going for the smooth finish... less wear on the airbox. Brown's was kind enough to sell me a remnant so I wouldn't have to buy a sheet. The rebuild kit is from McFarlane Aviation in Kansas and the rivets are coming from Bon Aero Fasteners in California. Firewall putty isn't available much anymore so I'm working on a substitute for that at the moment.
The rest of the story... the time had come to replace one shaft bearing, a control arm and the roll pin on the Skywagon's airbox. I had come away from the annual with hardly a scratch. I found a shop and got a phone estimate... $350 for the kit and $400 for labor and a few bucks for shipping. After three days the airbox arrived at said shop and the price was quoted at nearly $1900! Then what I heard on the phone was this, "If I'm going to put my name on it, I want to replace this, this and this and we'll paint it, too". It seems like fewer shops are interested in repairs in terms of service limits. Perhaps the goal is to stay out of lawyerland? Well, I'm not sure, but it's making the cost of flying unnecessarily expensive.
Blue Skies,
TJ
http://www.mcfarlane-aviation.com/
http://www.bonaero.com/
http://www.brownaircraft.peachhost.com/Home.htm

For my own information, are the rivets that hold the airbox flap material to the shaft made of monel? or some other kind of rivet.

GuyWagon

Did you try Wag-Aero? I don't know about the 180 box but they sold parts for the 170 box.

The rivets are hardened aluminum, AN 470 AD. I believe the rivets that hold the valve brackets to the shaft are monel and come with the rebuild kit.