---------------------------------------------------------- Zenith601-List Digest Archive --- Total Messages Posted Fri 09/04/09: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:01 AM - Re: LAA enginering (Thruster87) 2. 03:35 AM - Re: UK LAA mods - official information (Pete54) ________________________________ Message 1 _____________________________________ Time: 12:01:15 AM PST US Subject: Zenith601-List: Re: LAA enginering From: "Thruster87" Any rumors out there with respect to the following from Zenith;Regarding the 600 KG Zodiac, Zenair has indeed recommended reduced speeds and weights to catch people's attention (we really, really need to stop these accidents due to over-loading the aircraft). We will come up with an officially sanctioned (unlike the UK one) "Zenair modification" in order for pilots to operate the aircraft up to the full LSA limits (i.e. MTOW of 1,320 lbs with a safety factor of 1.5+) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=261372#261372 ________________________________ Message 2 _____________________________________ Time: 03:35:20 AM PST US Subject: Zenith601-List: Re: UK LAA mods - official information From: "Pete54" I can add a little info on the C of G and trimmer issues from the LAA. Back in February there was talk from them of slowing down the trimmer. The UK aircraft all have to have the large elevator trim tab. This gives a lot of trim authority and was 'necessary' for the initial UK acceptance. CZAW added the flap interconnect and many aircraft (like mine) have both. There was a flight test programme which extended the c of g range to 530mm from 455. During the recent trials the interaction between the interconnect and larger trim tab showed the potential for the longitudinal stability to be compromised. The quick and dirty solution is to de-power the trimmer by turning the horn around. Apparently removing the interconnect increases the longitudinal stability quite a bit. We'll find out when we get to test fly the aircraft. We'll have to carry out all the mods to get clearance to fly - that is just the way things are in the UK. Once we are flying there may be some potential for optimisation but after nearly 11 months of being grounded I'm just going to roll with it. I have flown my aircraft with the c of g at around 500mm, it felt pretty 'relaxed' and needed careful attention to pitch control. The rumour is that the UK aircraft modified so far need a little nose ballast to stay within the c of g limits. -------- Pete Morris Read this topic online here: http://forums.matronics.com/viewtopic.php?p=261375#261375 ------------------------------------------------------------------------------------- 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.