Today's Message Index:
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1. 05:24 AM - Prop Selection (Rich Simmons)
2. 06:32 AM - Re: CH601XL and Jabiru 3300 Performance (mhubel)
3. 12:30 PM - Re: CH601XL and Jabiru 3300 Performance (Stephen Smith)
4. 04:16 PM - Re: Re: CH601XL and Jabiru 3300 Performance (vvkidd@mindspring.com)
5. 07:52 PM - Re: CH601XL and Jabiru 3300 Performance (Stephen Smith)
Message 1
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Hey folks!
After a long wait, i have a Jabiru 3300. Yeah!!
Now, I need to order my firewall forward kit and prop.
There are 3 options.
1) one for short field take off
2) one for traveling - Higher cruse speeds
3) something in the middle.
For those with the same engine, what did you choose an why?
Rich
Murfreesboro, TN
601XL
Hoping to fly by Spring 2011
Message 2
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| Subject: | Re: CH601XL and Jabiru 3300 Performance |
Steve,
I just have three hours on the TBI 40. So far, it has been a significant improvement
over the Bing but one does not have to go far. It allows proper full throttle
operation while the Bing was unpredictable.
There is one issue. As with all carbs, getting the identical mixture to all cylinders
is always a problem. The TBI 40 sprays the fuel from a single bar in
the center of the carb. It sprays it to one side. With the very short distance
between the carb and cylinders 5,6, one gets varying mixtures especially to cylinder
5.
This afternoon, I will be trying the first fix I have in mind to solve this.
If that does not work, I have a more complex plan that is "almost" guarantied
to work.
When I find something that works, I will post it.
Still, the TBI 40 works as well as any carb I have ever used on Lycomings. They
are not perfect but they do work. The ideal solution would have been for Jabiru
to have provided pre drilled ports for fuel injectors. Then we could do this
the right way.
--------
Mark Hubelbank
N708HU
CH601XL
Jabiru 3300
Rotec TBI 40 carb
Sensenich ground adj prop.
28 hr TAF
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268395#268395
Message 3
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| Subject: | Re: CH601XL and Jabiru 3300 Performance |
Mark,
I was planning to mount the TBI so the slide goes up and down up being open, down
being closed. I was hoping this would eliminate left to right distribution
issues.
Which way did you mount your TBI? Would you share pictures?
Steve
--------
Steve Smith
N601WF
Zenair Zodiac XL
Jabiru 3300
600+ hours
Sensenich composite - ground adjustable
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268432#268432
Message 4
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| Subject: | Re: CH601XL and Jabiru 3300 Performance |
Steve:
What did you use to replace the scat tube between the air fiter and carb?
Victor Kidd
Charleston, WV, CRW
N922VK
-----Original Message-----
>From: Stephen Smith <sRoydSmith@hotmail.com>
>Sent: Oct 17, 2009 12:05 PM
>To: zenith601-list@matronics.com
>Subject: Zenith601-List: Re: CH601XL and Jabiru 3300 Performance
>
>
>Hello Mark,
>
>My 601 XL with a Jabiru 3300 and the carbon-fiber Sensenich prop is good for an
honest 140 MPH. It takes a minute or so to reach that speed. I dont do this
anymore because its too hard on the engine and fuel consumption is high (10
gallons per hour or so).
>
>My plane had performance problems early on. They all had to do with the engine
air intake system. The primary problem was the use of scat tube between the
airbox and the Bing carburetor. When I got rid of the scat tube I picked up
a noticeable amount of power.
>
>What is your top RPM when you hit the wall? Presumably you would want the engine
turning close to red-line where it produces the most power. Again, I dont
do this to my engine anymore. I have lowered the red-line to 3,050 and the yellow
to 2,950 after getting a good look at the rod bearings at 600 hours and noticing
they were quite worn.
>
>Steve
>
>--------
>Steve Smith
>N601WF
>Zenair Zodiac XL
>Jabiru 3300
>550+ hours
>Sensenich composite - ground adjustable
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=268329#268329
>
>
Message 5
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| Subject: | Re: CH601XL and Jabiru 3300 Performance |
Hello Victor,
I used radiator hose. NAPA part number 7905 (I think).
Here is a blog I wrote which tells a bit more.
http://www.zenith.aero/profiles/blogs/jabiru-3300-bing-carburetor
Steve
--------
Steve Smith
N601WF
Zenair Zodiac XL
Jabiru 3300
600+ hours
Sensenich composite - ground adjustable
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=268474#268474
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