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HelicopterEngines Plugs Mufflers Fuel › Looking for a header.
12-15-2011 01:09 AM  5 years agoPost 1
Mikerobe

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Green Turtle Cay,Abaco, Bahamas.

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15-20 years ago, there was a company that made an all stainless steel header that was all welded with a mounting flange and featured a flexible portion at the center to allow it to be bent in any direction. The whole assy was probably 5-6" long. It was suited for .40-.60 sized engines. Probably other sizes were also available.
Anyone remember these or have one?

The lot I got is not a lot, but I thank God a lot for the lot I got!

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12-15-2011 01:35 AM  5 years agoPost 2
Pistol Pete

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Seffner, FL

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Like these?

http://www.aircraftinternational.co.../KSHeaders.aspx

~~Enjoying the hobby one flight at a time~~

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12-15-2011 02:41 AM  5 years agoPost 3
Mikerobe

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Green Turtle Cay,Abaco, Bahamas.

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Yes! just like those but made for .46-.90 size glo engines.
The KS ones look to be for big gasoline engines.

Thanks Pistol_Pete!

The lot I got is not a lot, but I thank God a lot for the lot I got!

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12-27-2011 03:15 PM  5 years agoPost 4
Mikerobe

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Green Turtle Cay,Abaco, Bahamas.

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I'm looking for a header for an OS 61RX-H that is mounted with cylinder head facing rear. The header needs to go down and face rearward and up again to a pipe.

The lot I got is not a lot, but I thank God a lot for the lot I got!

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12-27-2011 11:23 PM  5 years agoPost 5
GMPheli

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W. Bridgewater, MA USA

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Hey Mike
Pretty sure I have one for a U pipe if that helps ya.

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12-28-2011 02:24 AM  5 years agoPost 6
Mikerobe

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Green Turtle Cay,Abaco, Bahamas.

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Hey GMPheli,
Thanks for the offer but I'm using a 61RFN-H (rear exhaust) in my modified PHI Hurricane and I need it to go straight down and bend under the rear strut and then back up to the rear for a pipe.
Graupner USA have (SKU 2239) which is a stainless by Zimmerman, I believe. Only problem is...it's bent for a forward facing motor not a rearward. This means the "Lazy D" shape of the exhaust on the OS's will be out 180 degrees.
I've been in contact with Mac's Mufflers and have found a header that fits the OS's "Lazy D" exhaust and is welded with a 15 degree up-turn already. I'm hoping I'll be able to get this bent to what I need.

The lot I got is not a lot, but I thank God a lot for the lot I got!

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01-02-2012 04:27 PM  5 years agoPost 7
Mikerobe

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Green Turtle Cay,Abaco, Bahamas.

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What are my chances of bending this successfully?
http://www.ebay.com/itm/MACS-HEADER...=item1c1d52b6f0
Anyone know about bending tubing?

The lot I got is not a lot, but I thank God a lot for the lot I got!

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01-02-2012 11:40 PM  5 years agoPost 8
gendoc

rrNovice

delmar de usa

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what radius and degree of bend do you need?

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01-03-2012 12:09 AM  5 years agoPost 9
Mikerobe

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Green Turtle Cay,Abaco, Bahamas.

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Hi gendoc,
I'm assuming this header is 6" long. It would need to be bent to within a 2-3/8"-2-1/2" radius and would cover approximately 134 degrees. In a "C" shape. Coincidentally the inside bend would be the same dimension as the circumference of a CD or DVD. Ask me how I know!

The lot I got is not a lot, but I thank God a lot for the lot I got!

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01-03-2012 12:42 AM  5 years agoPost 10
gendoc

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delmar de usa

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ok, that is a pretty tight radius. I assume the header is aluminum and if so if yo try to bend it cold it will kink without something to support the wall as it is bent. With that radius a conduit bender is to big. if you know of any fabrication shops down there that specialize in refrigeration or race cars they would probably have the benders and dies to bend that radius.

If not you will need to make the dies out of hard wood. It will need to be a little smaller then the finished radius because of spring back from the bending. After the dies are made they will need to be routed with a bit so that the routed edge is the same diameter as the tubing. From there you can try to bend a piece of EMT conduit to try the rig.

You can also soften the aluminum tubing by using an acetylene torch. if you want more info on the torch method let me know. this will still need a die to keep from collapsing the tubing.

I can send you some info that may help you design the dies but it would be later this week.

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01-03-2012 01:09 AM  5 years agoPost 11
airdodger

rrElite Veteran

Johnston USA

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Go look at Central Hobbies they used to sell them.

Chris

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01-03-2012 01:29 AM  5 years agoPost 12
gendoc

rrNovice

delmar de usa

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ebay has several tubing benders. search for tubing benders under hvac tools. you want something for 3/4" o.d. tubing. Be advised that the tubing benders are designed for soft copper or soft aluminum. the header will probably need to be annealed to make it bendable.

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