Comp's and Can's

[CSpaced]

Hey Guys,

I'm looking for pics of how people have been installing cannister mufflers in their composite airframes, specifically:

How big are you making the holes in the front of the fuse for the headers to come through?

How are you addressing keeping the inside of the fuse cool?

Are you building Tunnels?

Are you having to open up your cowls on the front any more to allow better airflow?

Thanks!

[RickP]

P1010015.jpg

Here's what I did. I have roughly twice this area cut out in the bottom of my fuse and it seems to be working. I am worried that I need more, but it does work.
RickP

[jaguar bone]

Gee - I don't have a comp - but ya have me worrying if I have a large enough vent hole in the back.
I love the way these things have no basic install parameters with them. It is strickly by trial, error and word of mouth (and internet!)

Any feedback on my install is welcome. This weekend is my first running of the engine!

[jaguar bone]

Okay - here are the pictures

[Imac Kiwi]

3.0M CompArf Extra with DA X-over Headers and Cannisters.

[jaguar bone]

	Quote: Originally Posted by Imac Kiwi
	3.0M CompArf Extra with DA X-over Headers and Cannisters.

Imac Kiwi - how long is that inside header mount cap screw? I am amazed and baffled to see your install of this fastener!
Also have a pic of the exit hole for the exhaust? I'm curious about how much you have opened it up.

Sweeeet install too BTWay, dude!

[Neogenesis]

	Quote: Originally Posted by Imac Kiwi
	3.0M CompArf Extra with DA X-over Headers and Cannisters.

What the purpose of crossing the headers? Wouldn't it just be easier to use a standard drop?



Neo

[CSpaced]

The cross headers allow the stinger from the cans to be further forward than with standard drops. The headers have to be a particular length so cutting them is not really an option.

For example, I have headers on my MTW cans that go straight back, but upon installing them I found that the stinger was positioned directly over my gear plate! I talked to DA and they informed me that there is a minimum length that you can cut the headers down to, and I was able to cut off an inch on the header in question to get the stinger in front of my gear plate.

[Neogenesis]

	Quote: Originally Posted by CSpaced
	The cross headers allow the stinger from the cans to be further forward than with standard drops. The headers have to be a particular length so cutting them is not really an option. For example, I have headers on my MTW cans that go straight back, but upon installing them I found that the stinger was positioned directly over my gear plate! I talked to DA and they informed me that there is a minimum length that you can cut the headers down to, and I was able to cut off an inch on the header in question to get the stinger in front of my gear plate.

Good to know...Thanks!!!!


Neo

[jaguar bone]

Gee, what the heck is the stinger?

[Richo]

Hi,

Here is a couple of shots of my Comp-Arf 260. I'm using BMB cans, which use a pretty short header. I've use MTW with crossover headers (same as imac kiwi's) in my superXtra wich worked pretty good.

I have ventelation holes in the botom of my fuse, and so far I havent encountered any heat related issues, with either set up.

[CSpaced]

	Quote: Originally Posted by MERCURY DAYDREAM
	Gee, what the heck is the stinger?

When I say stinger I am referring to the part where the exhaust comes out of the muffler.