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Dual Bing Carbs Hookup

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nail13zg(at)centurytel.ne
Guest

Posted: Wed Nov 05, 2008 9:42 am Post subject: Dual Bing Carbs Hookup

Does anyone have specifics on how to hook up the dual bing carbs on the 

Stratus Subaru engine to a single cable throttle, including cable part 

numbers etc. Building a Kitfox 5



Trey Moran

KF 5

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gkrysztopik(at)satx.rr.co
Guest

Posted: Wed Nov 05, 2008 10:24 am Post subject: Dual Bing Carbs Hookup

I used a cable splitter from Lockwood Aviation and bicycle cables.  

Larry has a nice setup on his Zenith  www.macsmachine.com



gary



Trey Moran wrote:

 	  Quote: 	
		   

 <nail13zg(at)centurytel.net>



 Does anyone have specifics on how to hook up the dual bing carbs on 

 the Stratus Subaru engine to a single cable throttle, including cable 

 part numbers etc. Building a Kitfox 5



 Trey Moran

 KF 5




	


-- 

Gary Krysztopik

www.ZWheelz.com

San Antonio, TX

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larry(at)macsmachine.com
Guest

Posted: Wed Nov 05, 2008 2:35 pm Post subject: Dual Bing Carbs Hookup

Hi Trey,

I changed my dual-cable throttle setup to single cable sheath and a 

music wire within and a connection that joins both Bings in a common link.

It's been working fine for 4 years now.  Pictures on my sites engine and 

controls pages show how it's hooked up. If you need more information,

just ask.  Mine is also the Stratus, so it's informational specific.  

See links,

www.macsmachine.com/html/subaruengine.htm

www.macsmachine.com/html/controllinkages.htm

http://www.macsmachine.com/images/controllinkages/full/throttlelink.gif

http://www.macsmachine.com/images/controllinkages/full/panelinflight(2).gif

My throttles on the panel side are common friction adjustable cables.



Larry McFarland 601HDS at www.macsmachine.com



Trey Moran wrote:

 	  Quote: 	
		   

 <nail13zg(at)centurytel.net>



 Does anyone have specifics on how to hook up the dual bing carbs on 

 the Stratus Subaru engine to a single cable throttle, including cable 

 part numbers etc. Building a Kitfox 5



 Trey Moran

 KF 5

- The Matronics Stratus-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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nail13zg(at)centurytel.ne
Guest

Posted: Fri Nov 07, 2008 5:34 pm Post subject: Dual Bing Carbs Hookup

Larry,



I am intrigued by how you hooked the two carbs using one cable. Can't figure 

it out from the pictures. Can you give me a few details? Did you use any of 

the Rotax hardware? Did you do the same thing for the choke?



Trey

---

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larry(at)macsmachine.com
Guest

Posted: Sat Nov 08, 2008 7:47 am Post subject: Dual Bing Carbs Hookup

Hi Trey,

I put the linkage arms to the inside between the bings and made a 

linkage that connects both carbs at the linkage.

see link and note the solid tubes connected by a bent flex link, seen 

between oil filler and alternator.

http://www.macsmachine.com/images/controllinkages/full/abingcarbscable.gif



The firewall linkage shown is the way I connected a A-820 friction 

throttle with wire p/n 05-09436 control to my firewall mounted arms

each side and it allows the cable to push further without serious 

bending of the larger throttle wire.



The collet fastener you see holding onto the throttle wire is called a 

.078 wire grip and it allows you to

shorten the throttle wire and sheath p/n and attach the wire to the 

linkage. p/n 05-16001 at aircraft spruce.

http://www.macsmachine.com/images/controllinkages/full/throttlelink.gif



Then see the .065 music wire connection between the firewall mounted arm 

and the carburetor. It uses the sheath as a guide

http://www.macsmachine.com/images/controllinkages/full/throttlewire.gif



The pieces I made look like these two assemblies. Connecting link 

between carbs and wire connection. See link.

http://www.macsmachine.com/images/controllinkages/full/Binglinkdwg.gif



The following link is my enrichment connection and it retains two cables 

as before. Some call it a choke, but it pulls both cables.

http://www.macsmachine.com/images/controllinkages/full/choke2to1clamp.gif



This is really simple and works really well without any springs for the 

throttle arms to get in the way. Works like any Cessna throttle.

Hope this helps a bit,



Larry McFarland

Trey Moran wrote:

[quote] 

 <nail13zg(at)centurytel.net>



 Larry,



 I am intrigued by how you hooked the two carbs using one cable. Can't 

 figure it out from the pictures. Can you give me a few details? Did 

 you use any of the Rotax hardware? Did you do the same thing for the 

 choke?



 Trey

 ---

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nail13zg(at)centurytel.ne
Guest

Posted: Tue Nov 11, 2008 8:21 am Post subject: Dual Bing Carbs Hookup

Hi Larry,



Thanks for the individual pics with explanations. That really helps. One 

last question (I hope). Where did you get the throttle arm that allows you 

to push for power? Right now, my throttle arms are spring loaded to the idle 

position (based on fact that the spring holds the arm against the idle set 

screw) and any direct cable connection to the arm is a "pull to add power" 

connection.



Trey

---

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gkrysztopik(at)satx.rr.co
Guest

Posted: Tue Nov 11, 2008 9:04 am Post subject: Dual Bing Carbs Hookup

Mine came that way too but I reversed them.  I had to get new throttle 

arms and a shorter starter.  I would prefer, and it is aircraft 

convention, to have springs pull throttle on as default if cable breaks 

or slips.



gary



Trey Moran wrote:

 	  Quote: 	
		   

 <nail13zg(at)centurytel.net>



 Hi Larry,



 Thanks for the individual pics with explanations. That really helps. 

 One last question (I hope). Where did you get the throttle arm that 

 allows you to push for power? Right now, my throttle arms are spring 

 loaded to the idle position (based on fact that the spring holds the 

 arm against the idle set screw) and any direct cable connection to the 

 arm is a "pull to add power" connection.



 Trey

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frank.hinde(at)hp.com
Guest

Posted: Tue Nov 11, 2008 9:05 am Post subject: Dual Bing Carbs Hookup

Trey,



Larry has a good piece of design as he has overcome what is something of a flaw in the original design. That is using springs to pull open the carbs.



There was a famous accident where a 701 was  using the springs and the owner found these a little stiff..he's right they were.



So he either found a weaker spring or removed one of them..Something like that.



Anyway, the owner decided to do a go around and the spring did not pull the carbs open and it ended up in the trees.



Larry's design is a solid push/pull that does not require spring..It is indeed just like my Lycoming on my RV and well worth doing IMHO.



Frank

601 HDS 400 hours

RV71 IO360 330 hours...And  whole lot more distance..



--

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