---------------------------------------------------------- Zenith601-List Digest Archive --- Total Messages Posted Mon 10/26/09: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:41 AM - Re: Nose wheel fork failure (mhubel) 2. 08:57 AM - Cowling attachment, O200 (Jim Belcher) 3. 10:58 AM - Re: First Flight () 4. 11:55 AM - Re: First Flight (mhubel) 5. 04:28 PM - Re: Cowling attachment, O200 (Doug - SportAviation) 6. 05:47 PM - Re: Cowling attachment, O200 (Sabrina) 7. 10:35 PM - Re: Nose wheel fork failure (Ianrat) ________________________________ Message 1 _____________________________________ Time: 05:41:48 AM PST US Subject: Zenith601-List: Re: Nose wheel fork failure From: "mhubel" I might add that I had a slightly similar event. It was on the second landing. The aircraft clearly "landed" very nose heavy. One seasoned observer said he thought no aircraft could survive un-damaged. I bent the nose wheel assembly back under the fuseloge and of course broke the prop. Without going into all the details of how this happened as there are always multiple things that typically add up to cause such an event. My thoughts were that after flying 20 years in an AA-5, I am still convinced that the AA-5 with its long nose assembly and castering wheel, just might have survived with a large bounce. This assumes that one did full power go-around. I still think the nose wheel of the 601 design is a weak point. On the prop strike, Jabiru has a specific procedure to check the crank without engine the tear down. According to Jabiru USA, they have had over 20 prop strikes reported and none have resulted in damaged cranks so far. This includes the ones where an engine tear down was done. Check with Pete at Jabiru USA for the details. They are not available on-line. I have attached the procedure. -------- 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=269453#269453 Attachments: http://forums.matronics.com//files/prop_strike_inspection_171.pdf http://forums.matronics.com//files/prop_strike_check_crank_run_out_156.tif ________________________________ Message 2 _____________________________________ Time: 08:57:56 AM PST US From: Jim Belcher Subject: Zenith601-List: Cowling attachment, O200 This is a query to anyone who used the Continental O200 on their 601XL. How did you attach the fiberglass cowling to the rest of the aircraft? I'm looking for ideas. Whilwe I can comew up with something, I hate to reinvent the wheel if someone already has a good solution. ============================================ Jim B Belcher BS, MS Physics, Math, Computer Science A&P/IA Retired aerospace technical manager Mathematics and alcohol do not mix. Do not drink and derive. ============================================ ________________________________ Message 3 _____________________________________ Time: 10:58:50 AM PST US From: Subject: Re: Zenith601-List: First Flight Jeff, could you detail the problems you had with the Aerocarb? I've been thinking about maybe using one, and could use the info. Thanks, Paul R ----- Original Message ----- From: Afterfxllc@aol.com To: zenith601-list@matronics.com ; zenith-list@matronics.com Sent: Sunday, October 25, 2009 7:05 PM Subject: Zenith601-List: First Flight Hi All Well today after much aggravation with the Aero Carb on the Corvair engine we decided to switch to a MA-3A and had it rebuilt with a MA-3SPA nozzle to richen it up slightly. We taxied the plane 4 or 5 times thru all power setting before our test pilot was called to duty. Ralph (test pilot) had flown with me in the first 601xl I built so he was not as nervous as a first time test pilot would be flying behind a Corvair or even the 601 for that matter. The first flight went off without a hitch and the Corvair preformed as expected the prop is set at 10 1/2 degrees 2700 to 2800 static and 2900 109 MPH climb out. The CHT's were around 300 and the oil temp was 210 degrees before the cooler EGT's were around 1,200 degrees. All the parts on this plane are from Aerolite and the new Tech that picks up from the AC side of the alt worked great also (No more flywheel pickup). The new cowling and ram air Baffles really keep the temps down but I know our oil cooler setup works better than any other cooler out there when combined with our baffles. Tomorrow I will fit the wheel Pants and tinker with the trim a bit but all and all a great day. Watch the First Flight on U-tube http://www.youtube.com/watch?v=XwNrpIMhr_A Jeff www.aeroliteproducts.com http://www.matronics.com/Navigator?Zenith601-List http://www.matronics.com/contribution ________________________________ Message 4 _____________________________________ Time: 11:55:54 AM PST US Subject: Zenith601-List: Re: First Flight From: "mhubel" I had also tried an Aerocarb on a CH601XL. It was with a Jabiru 3300. I had two problems and both may have been due to the fuel pressure. One was difficulty getting a reasonable idle mixture. It was difficult to get it lean enough. This might have been solved but the other issue was the leaking fuel. With a Aerocarb (even with a pressure regulator), if the electric fuel pump is on (and it is assumed all low wing fuel systems have a backup electric pump), the carb will allow fuel to flow even if the engine is not running. This can result in a large amount of fuel dripped near the exhaust system. The only solution is to ALWAYS remember to have the electric pump off if the engine is not running. As one usually puts the pump on for landing, then shuts down the engine after a short taxi, this seems like asking for too much. Even using the mixture control to stop the engine does not insure that there will be no fuel drip as the engine will stop before the fuel flow is completely stopped. It is effectively a single point failure mode. I understand that with the lower pressure of gravity feed, these things are better. Perhaps a pressure regulator that could be set below 1 PSI might help. -------- 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=269533#269533 ________________________________ Message 5 _____________________________________ Time: 04:28:12 PM PST US From: "Doug - SportAviation" Subject: RE: Zenith601-List: Cowling attachment, O200 Take a look at what AMD does (www.newplane.com). If you need detail pictures I can probably photograph my cowling and send them to you. Doug Norman (AMD N601DN) -----Original Message----- From: owner-zenith601-list-server@matronics.com [mailto:owner-zenith601-list-server@matronics.com] On Behalf Of Jim Belcher Sent: Monday, October 26, 2009 11:34 AM Subject: Zenith601-List: Cowling attachment, O200 This is a query to anyone who used the Continental O200 on their 601XL. How did you attach the fiberglass cowling to the rest of the aircraft? I'm looking for ideas. Whilwe I can comew up with something, I hate to reinvent the wheel if someone already has a good solution. ============================================ Jim B Belcher BS, MS Physics, Math, Computer Science A&P/IA Retired aerospace technical manager Mathematics and alcohol do not mix. Do not drink and derive. ============================================ ________________________________ Message 6 _____________________________________ Time: 05:47:50 PM PST US Subject: Zenith601-List: Re: Cowling attachment, O200 From: "Sabrina" I used 13 (7 top, 6 bottom) Camloc CM1 adjustable depth receptacles. I made up my own brackets and mounted them to the firewall. My cowling is mounted outside the sideskins. At 4 minutes into this video you can see the brackets: http://www.youtube.com/watch?v=_ZQfypsw8k4 I am at school and do not have access to my plans or build photos. They are not cheap, but they hold much better than my attempts with Dzus fasteners. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=269579#269579 ________________________________ Message 7 _____________________________________ Time: 10:35:25 PM PST US Subject: Zenith601-List: Re: Nose wheel fork failure From: "Ianrat" Thruster 87 sorry to here about your plane. Glad to here that you are Ok Ianrat Read this topic online here: http://forums.matronics.com/viewtopic.php?p=269610#269610 ------------------------------------------------------------------------------------- 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.