---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Wed 05/21/08: 13 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:53 AM - Re: Zenith CH701 Flight Manual (jetboy) 2. 02:08 AM - Re: Zenith CH701 Flight Manual (Ken Arnold) 3. 07:43 AM - Re: Re: Zenith CH701 Flight Manual (George Race) 4. 08:24 AM - Re: Re: Zenith CH701 Flight Manual (Leo Gates) 5. 10:39 AM - False Airspeed indication on 701 (Les Goldner) 6. 11:48 AM - Rotax 912 fuel pump (Klaus Truemper) 7. 02:04 PM - Re: Rotax 912 fuel pump (haven) 8. 03:08 PM - Re: Rotax 912 fuel pump (Klaus Truemper) 9. 04:48 PM - Re: Re: White lettering on Panel (Juan Vega) 10. 06:42 PM - canopy progress (leinad) 11. 07:29 PM - IMORTANT QUESTION TO JAY "TRON MAN" (Juan Vega) 12. 08:04 PM - Re: False Airspeed indication on 701 (Paul Mulwitz) 13. 09:03 PM - Re: Rotax 912 fuel pump (billmileski) ________________________________ Message 1 _____________________________________ Time: 12:53:34 AM PST US Subject: Zenith-List: Re: Zenith CH701 Flight Manual From: "jetboy" Its on the ZAC website, builders section somewhere near the drawing updates. best to use the SP manual. There are a number of errors where knots / mph are exchanged. do not archive -------- Ralph - CH701 / 2200a Read this topic online here: http://forums.matronics.com/viewtopic.php?p=184143#184143 ________________________________ Message 2 _____________________________________ Time: 02:08:58 AM PST US From: "Ken Arnold" Subject: Re: Zenith-List: Zenith CH701 Flight Manual Keith, Many thanks! Ken Arnold 156 Esther Drive Pikeville, NC 27863 Will return the favor. I intend to install VGs on elevator and electric flap. Will send pictures when finished. Also, any differences in speeds. Ken ----- Original Message ----- From: "Ashcraft, Keith - AES" Sent: Tuesday, May 20, 2008 11:43 PM Subject: RE: Zenith-List: Zenith CH701 Flight Manual Hey Ken, What is your address. I will send you what I got directly!! Keith (TDY in Alameda,CA wishing I was home plane building !!) ******************************************************************************* -----Original Message----- From: owner-zenith-list-server@matronics.com on behalf of Ken Arnold Sent: Tue 5/20/2008 2:47 PM Subject: Zenith-List: Zenith CH701 Flight Manual Hi, Computer failure with lack of back up resulted in some lost files. I would like to get copy of Czech Flight Manual. Keith Ashcraft published one in July 03. Many thanks, Ken Arnold Pikeville, NC N701LK w/912ULS flying This e-mail and any files transmitted with it may be proprietary and are intended solely for the use of the individual or entity to whom they are addressed. If you have received this e-mail in error please notify the sender. Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of ITT Corporation. The recipient should check this e-mail and any attachments for the presence of viruses. ITT accepts no liability for any damage caused by any virus transmitted by this e-mail. ________________________________ Message 3 _____________________________________ Time: 07:43:32 AM PST US From: "George Race" Subject: RE: Zenith-List: Re: Zenith CH701 Flight Manual Could someone please provide a link to the information mentioned below. I have searched the site but cannot find it. Thanks, George Do Not Archive "Its on the ZAC website, builders section somewhere near the drawing updates. best to use the SP manual. There are a number of errors where knots / mph are exchanged." ________________________________ Message 4 _____________________________________ Time: 08:24:57 AM PST US From: Leo Gates Subject: Re: Zenith-List: Re: Zenith CH701 Flight Manual Manual Attached Do Not Archive Leo Gates George Race wrote: > > Could someone please provide a link to the information mentioned below. > I have searched the site but cannot find it. > Thanks, > George > ________________________________ Message 5 _____________________________________ Time: 10:39:17 AM PST US From: "Les Goldner" Subject: Zenith-List: False Airspeed indication on 701 I need advice solving an airspeed indicator problem. Ever since I completed my 701, (about 50 flight hours ago) I noticed a sharp drop-off in airspeed as soon as I pulled back the stick. As I increased the angle of attack, indicated airspeed would go from 80 to 40 MPH in just a few seconds, and at times even drop to zero, although I sensed no stall. At first I though this airspeed change (other than the zero indication) was characteristic of the 701 since both a steam gauge and a Dynon showed the same drop. Both instruments have their own pitot tubes, but are connected to a single static line that terminates in an open tube far outboard inside one wing. Both instruments read OK when in cruse attitude (80-85-mph). I just returned from a 1600-mile flight in my new 701, going from the San Francisco area to Page Az. (It was a great confirmation of the 701's flight capabilities, requiring flight over 10000' for several hours, crossing over mountaintops with turbulent 30-mph winds, going into Bryce & the Grand Canyon, Monument Valley, etc.). I was flying next to a Challenger that could not cruse faster than 75-MPH so I had to fly in a nose-high attitude. At this speed/attitude, my buddy in the Challenger consistently showed 10-MPH higher airspeed than I was showing, which was confirmed by GPS. To try fixing the faulty airspeed indication, during the return from Page, I cut the static line under the instrument panel to check whether possible pressurization in the wing at a high angle of attack was the cause of the problem; and did notice some improvement. I also bent the steam gauge's pitot tube down a little so that the wind would be perpendicular with the airflow at a high angle of attack, and cut the bottom tip of the tube on an angle, but this had not effect. As an aside, I know an angle-of-attack /LRI indicator would help keep me out of trouble. (I get a little concerned with zero airspeed displayed on takeoff). One reason I purchased the Dynon is that it does have an AOA indicator. However I found it impossible to follow the four-stall setup procedure required by Dynon to synchronize the AOA because the Dynon never saw the expected sharp stall drop-off. What else can I do to fix my airspeed indication problem? Suggestions would be appreciated. Les ________________________________ Message 6 _____________________________________ Time: 11:48:57 AM PST US From: Klaus Truemper Subject: Zenith-List: Rotax 912 fuel pump Hi, We just learned the hard way that a fuel filter immediately ahead of the Rotax mechanical fuel pump is very important. When we first installed the engine, we did have such a filter to catch initial debris possibly coming from the center tank. That tank receives all fuel from the two wing tanks, which have filters ahead of the electric transfer pumps. After 100 hrs of flying, we thought that the filter ahead of the Rotax pump could be removed, since all fuel comes from the wing tanks and thus is filtered. WRONG! The Rotax pump failed after 400 hrs, gradually losing pressure. The second Rotax pump failed recently, gradually losing pressure after 700 hrs of service. In both cases the electric boost pump saved the day. On the other hand, the three facet pumps used in the system have never failed. In the repair manual, Rotax warns that the mechanical pump can fail due to contamination. Apparently this can happen even if the fuel sampled from the gascolator shows no contamination, which has been the case for years. We can only conjecture that the Rotax pump can be disabled by very small debris. The lesson is: There must always be a filter just ahead of the mechanical pump. Since this is in the engine compartment, the filter must be have a metal housing. Maybe this will help somebody else avoid the problems and expense we have had with the Rotax pump. Happy flying, Klaus www.utdallas.edu/~klaus ________________________________ Message 7 _____________________________________ Time: 02:04:46 PM PST US Subject: Zenith-List: Re: Rotax 912 fuel pump From: "haven" Is the Rotax pump very costly? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=184245#184245 ________________________________ Message 8 _____________________________________ Time: 03:08:32 PM PST US From: Klaus Truemper Subject: Zenith-List: Re: Rotax 912 fuel pump The most recent cost of the Rotax fuel pump was around $170. Klaus www.utdallas.edu/~klaus ________________________________ Message 9 _____________________________________ Time: 04:48:59 PM PST US From: Juan Vega Subject: Re: Zenith-List: Re: White lettering on Panel it was screen printed by a print shop. not expenseive at all. -----Original Message----- >From: Gary Ray >Sent: May 17, 2008 7:23 AM >To: zenith-list@matronics.com >Subject: Zenith-List: Re: White lettering on Panel > > >Jay in Dallas CH 601XL N2630J "lil Bruiser" > > With reference to your 5-16-08 post: > You have a very attractive instrument panel. How did you do the White >lettering? > >Gary Ray 601XL, 73 HrTT, WW Corvair >davgray@sbcglobal.net > > >---------------------------------------------------------------------------- >---- > > ________________________________ Message 10 ____________________________________ Time: 06:42:33 PM PST US Subject: Zenith-List: canopy progress From: "leinad" I've updated my websight with the canopy progress for anyone interested. The URL is: http://daniel.dempseyfamily.us I should be putting the finishing it up this weekend. Thank you to those who answered my questions about how to do it. Dan Dempsey plans building 601XL /Corvair -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=184281#184281 ________________________________ Message 11 ____________________________________ Time: 07:29:22 PM PST US From: Juan Vega Subject: Zenith-List: IMORTANT QUESTION TO JAY "TRON MAN" Jay and all listers; DUDE; you know you are famous when they make a spoof of you on SOUTH PARK!! After a long business trip, i was relaxing in front of the T.V. and behold!, watching SouthPark, JAY is on SouthPark!! Our very own TRON Maynard. DUDE!! Congrads man! and keep on keepin on with the build! By the way was that your voice? Juan ________________________________ Message 12 ____________________________________ Time: 08:04:24 PM PST US From: Paul Mulwitz Subject: Re: Zenith-List: False Airspeed indication on 701 Hi Les, I think you are on the right track by cutting the static line and seeing some improvement or difference. The big planes (C-182, etc.) have dual static ports that are mounted on each side of the fuselage where the airflow is straight across them. That is, the fuselage side is lined up with the normal direction of flight. I believe they are connected in the middle, but I am not sure about that. They sample the outside air rather than any enclosed air such as your wing or cockpit air. The static port for the XL in the kit I got is a variation on this theme. It is a single tube sealed at the front end and with three little holes in the sides equally spaced around the tube. I have heard of alternate static ports mounted inside the cockpit which can be of some use if your main static port is clogged or iced over, but these are not expected to give accurate readings for airspeed or altitude. On the other hand this kind of degradation in these readings is better than no readings at all which is what you get with no static port at all. I hope this helps. I think you will do well to install a more normal static port system than the one you started with. Good luck, Paul XL fuselage At 10:34 AM 5/21/2008, you wrote: >Ever since I completed my 701, (about 50 flight hours ago) I noticed >a sharp drop-off in airspeed as soon as I pulled back the stick. As >I increased the angle of attack, indicated airspeed would go from 80 >to 40 MPH in just a few seconds, and ________________________________ Message 13 ____________________________________ Time: 09:03:48 PM PST US Subject: Zenith-List: Re: Rotax 912 fuel pump From: "billmileski" Klaus, Would you happen to know if, when failed, the pump is blocked, or freely allows fuel to still flow through? Best, Bill Mileski 701 912S 125hrs Read this topic online here: http://forums.matronics.com/viewtopic.php?p=184300#184300 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith-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/zenith-list Browse Digests http://www.matronics.com/digest/zenith-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.