Questions/Photos from ACA HQ?

Bartman

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Folks,

I'm going to be heading back to Wisconsin soon to pick up my newly refurbished 8KCAB fuselage frame. While there, what photos would you like to see and what questions would you like to see answered?

Naturally, I'll be stocking on bare fuselage details as I get working on populating my frame with all of the various doo-dads that go in prior to fabric, but think about what you're working on or what you've been thinking about and I'll try to get some answers for you.

Bart
 

Bob Turner

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Currently refinishing floorboards. Check out what their current attachment philosophy is? I am moving to #8 Tinnermans and flat head stainless type B screws.

Also thinking about finish. Leaning toward gloss black with clear polyurethane top coat. One suggestion was "bedliner."

I was going to do new boards out of Baltic Birch, but the originals are not cracked, and my favorite lumberyard got bought by Wallymart, and probably deals in more common stuff now. Plus, there are probably little tiny Covids in there.
 

Bob Turner

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Oh - and we have had problems with belly fabric getting beat to death. See what their current thinking is on attachment to those cross members under the cockpit area?
 

BB57

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I have a 1967 KCAB. It has the old style cowl (obviously) and uses a piece of black rubber tubing that is about 4 1/2" in diameter and about 3 1/2" long to connect the air induction fitting in the cowl to the air induction fitting on the air intake on the engine. It is an absolute bear to get the cowling on while lining the tubing up to fit over the intake on the air box. The thing is, once they are connected there is virtually no gap between them and no room for a second clamp.

I'd love to see what they are doing now and find out if ACA come up with something better for these older aircraft. A 3/4" thick rubber gasket would press fit between the two and make re-installing the cowling something less than a 3 man, 1/2 hour job.
 

Bartman

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Oh - and we have had problems with belly fabric getting beat to death. See what their current thinking is on attachment to those cross members under the cockpit area?
I can answer that one, metal belly skins. it's a popular upgrade lately
 

Bob Turner

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I have scat tube from the air box to the cowl inlet. It is clamped to the box, and I just stick my fingers in there and roll it over the cowl lip. Seems to stay there. Easy. Usually oily, which helps.
 

Bartman

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I have a 1967 KCAB. It has the old style cowl (obviously) and uses a piece of black rubber tubing that is about 4 1/2" in diameter and about 3 1/2" long to connect the air induction fitting in the cowl to the air induction fitting on the air intake on the engine. It is an absolute bear to get the cowling on while lining the tubing up to fit over the intake on the air box. The thing is, once they are connected there is virtually no gap between them and no room for a second clamp.

I'd love to see what they are doing now and find out if ACA come up with something better for these older aircraft. A 3/4" thick rubber gasket would press fit between the two and make re-installing the cowling something less than a 3 man, 1/2 hour job.
Mine is the same way, a semi flexible, thin walled rubber sleeve that needs to be lined up as the cowl is raised into position but mine slides on pretty easily.
 

BB57

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I took it up for a test flight today. I'm getting 105 mph IAS at 2200 rpm at 1500 ft MSL leaned 100 degrees ROP. That's 15 mph faster than before we removed and replaced the cowl. The air box was obviously blocked and reducing manifold pressure. I thought the ASI was inaccurate at the upper end of the range before we discovered this.