---------------------------------------------------------- Zenith650-List Digest Archive --- Total Messages Posted Thu 11/19/09: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:24 PM - Czech Sport Cruiser (Jim Belcher) 2. 05:52 PM - Re: Czech Sport Cruiser (Greg Cox) 3. 05:53 PM - Re: Czech Sport Cruiser (Terry Phillips) ________________________________ Message 1 _____________________________________ Time: 01:24:59 PM PST US From: Jim Belcher Subject: Zenith650-List: Czech Sport Cruiser Has anyone seen anything about the required modificatin kit being necessary for the Czech Sport Cruiser, a 601XL derivative? The guy in the hanger next to me would like to know, as he has one. -- ============================================ Do not archive. ============================================ 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 2 _____________________________________ Time: 05:52:32 PM PST US Subject: RE: Zenith650-List: Czech Sport Cruiser From: "Greg Cox" Jim, The wing on the Sportscruiser is already of heavier construction. The spar caps are 1/4" thicker and there is additional riveting of the spars as well. Greg Cox Sydney, Australia -----Original Message----- From: owner-zenith650-list-server@matronics.com [mailto:owner-zenith650-list-server@matronics.com] On Behalf Of Jim Belcher Sent: Friday, 20 November 2009 7:25 AM zenith650-list@matronics.com Subject: Zenith650-List: Czech Sport Cruiser Has anyone seen anything about the required modificatin kit being necessary for the Czech Sport Cruiser, a 601XL derivative? The guy in the hanger next to me would like to know, as he has one. -- ============================================ Do not archive. ============================================ 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: 05:53:16 PM PST US From: Terry Phillips Subject: Re: Zenith650-List: Czech Sport Cruiser Jim I suggest that you go over to the next hangar and take a careful look at the Sport Cruiser's wing structure. There are definite similarities to the 601XL/650, particularly the ribs. But check out the front spar. The spar caps have 50% greater thickness at the root--yes, that's, right, instead of 0.50" the caps are 0.75" at the roots. The spar cap angle is bent from the spar cap web, and thus is 0.040 thick, IIRC, rather than 0.032". The rivet pattern is doubled top and bottom close to the root. And the spar cap layers taper in thickness and width as you move out the wing. The Sport Cruiser does not seem to have step changes in the spar caps like the end of the the 601XL/650 spar cap doubler. The Sport Cruiser center spar is also 50% thicker than the 601XL/650. In addition, there are 2 stringers on the top of the wing and 1 on the bottom. I haven't looked closely at the rear spar, but the flap and aileron hinges are not piano or flex hinges. I cannot tell if the ailerons are balanced. The aileron controls are push rods. It is clear that while there are significant similarities between the two designs, there are significant differences. Most importantly, I have not heard of any Sport Cruiser inflight breakups. Unless Sport Cruiser's start to break up in flight for unknown reasons, I imagine that your neighbor can rest easy. Terry At 02:24 PM 11/19/2009 -0600, you wrote: >Has anyone seen anything about the required modificatin kit being necessary >for the Czech Sport Cruiser, a 601XL derivative? The guy in the hanger next >to me would like to know, as he has one. Terry Phillips ZBAGer ttp44~at~rkymtn.net Corvallis MT ZU-601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail & flaps are done; Balancing the ailerons and working on the wings http://www.mykitlog.com/N47TP/ ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith650-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith650-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/zenith650-list Browse Digests http://www.matronics.com/digest/zenith650-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.