---------------------------------------------------------- Zenith601-List Digest Archive --- Total Messages Posted Sat 10/17/09: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:06 AM - Re: CH601XL and Jabiru 3300 Performance (Stephen Smith) 2. 01:47 PM - Re: CH601XL and Jabiru 3300 Performance (mhubel) 3. 09:17 PM - Re: CH601XL and Jabiru 3300 Performance (Stephen Smith) ________________________________ Message 1 _____________________________________ Time: 09:06:08 AM PST US Subject: Zenith601-List: Re: CH601XL and Jabiru 3300 Performance From: "Stephen Smith" 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 2 _____________________________________ Time: 01:47:19 PM PST US Subject: Zenith601-List: Re: CH601XL and Jabiru 3300 Performance From: "mhubel" Steve, My static WOT RPM is 2800 with the present prop setting. In flight, I get up to 3100 RPM but keep it at or below 2800 for level flight. I expected that getting to near 140 MPH was going to take most of t he available power. At least from your experience it is possible. I don't expect to actually operate in that range too often but I would like to know what the airframe is reasonably capable of. Do you have wheel pants? External antennas? At this time I don't have wheel pants, only one antenna, the ELT, and no entry step. I have not cleaned up any of the gaps around the stabilizer and have done nothing about the gaps on the control surfaces. The engine is just finishing its "run in" period during which I tried to keep power high but not above 75% except for climb. I have given up on the Bing carb. I never got it to operate well at full throttle. Jabiru's statement was that the problem was caused by the right angle bend in the intake. Given that this bend was inherent in the Jabiru firewall forward kit, I though this was not a good response. I also never liked a number of things about the Bing, I never got the feeling it was a real aircraft device. Did you have to replace engine parts or was your observation at 600 hours just an inspection? Did you measure how much wear there was on the bearings? -------- 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=268342#268342 ________________________________ Message 3 _____________________________________ Time: 09:17:33 PM PST US Subject: Zenith601-List: Re: CH601XL and Jabiru 3300 Performance From: "Stephen Smith" Mark, My plane does have wheel pants. I have a COM and ELT external antennas. I have a entry step. How do you like your TBI? My TBI will be here in 3 days. At 600 hours I did a full top-end. More information can be found on my blogs on the Zenith Aircraft Builders and Flyers site. http://www.zenith.aero/profile/StephenRSmith Steve[/code] -------- 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=268378#268378 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith601-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith601-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/zenith601-list Browse Digests http://www.matronics.com/digest/zenith601-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.