---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sun 09/07/08: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:32 AM - Re: Classic stall characteristics (High Top Mod) (G-IANI) 2. 09:32 AM - Re: Classic stall characteristics (High Top Mod) (Frans Veldman) 3. 01:13 PM - Re: Classic stall characteristics (High Top Mod) (Frans Veldman) 4. 11:38 PM - Re: Jos Okhuisen (nwcmc@tiscali.co.uk) ________________________________ Message 1 _____________________________________ Time: 03:32:43 AM PST US From: "G-IANI" Subject: RE: Europa-List: Classic stall characteristics (High Top Mod) Frans Both the original High Top (with the high cowl) and the new version (lowered cowl, bigger screen) the difference in max speed and cruise speed (for a fixed power setting) is too small to measure given the other variables such as weight and very small build differences. The only thing I have noticed since we completed testing is that the new (64b) setup seems to be very slightly less stable in pitch. Having modified the aircraft we cannot go back to the original to get a real comparison. The new deeper screen seems to generate a little more lift from the fuselage. Flying "hands off" in gusty conditions, and directly into wind, the nose will hunt up and down very slightly with a period of about 10 seconds. This is so slight that the original High Top may have been the same but we did not notice until we started to look carefully for differences. If you have your hand on the stick you damp this out. Most of this testing was done with the TruTrak autopilot on to maintain the heading and this could be the cause. Has any other high top owner noticed anything similar? Ian Rickard G-IANI XS Trigear, 200 hours Europa Club Mods Rep (Trigear) e-mail mods@europaclub.org.uk or direct g-iani@ntlworld.com ________________________________ Message 2 _____________________________________ Time: 09:32:41 AM PST US From: Frans Veldman Subject: Re: Europa-List: Classic stall characteristics (High Top Mod) Hi Ian, > The only thing I have noticed since we completed testing is that the new > (64b) setup seems to be very slightly less stable in pitch. Having modified > the aircraft we cannot go back to the original to get a real comparison. You might be interested to know that we have incorporated a modified mod64b, that is, we have lowered the forward section only by 3,5 cm (about halfway), and made it parallel with the lower fuselage. With some juggling we were able to use the original windscreen for this. (Actually we bought the deeper windscreen as well, but this one was not going to fit with our modified mod, so we extended the rear window flange slightly so we could use the original windscreen, which was a bit oversized anyway). We thought this to be a good alternative because: 1) We didn't like the look of mod 64b too much (don't feel offended, this is just a matter of personal taste), and now it looks much more like a regular Europa XS. The windscreen remains flatter, and does not extend below the side windows. 2) We already built a customised instrument panel, which partly utilized the taller panel space available. 3) We wanted to have a better view outside, but we didn't desire to see the entire cowling. ;-) We are not flying yet, but you may be sure we will give a detailed report. Not that this will say anything, as we have incorporated a few more mods. If we find some time we will post a few pictures. Too busy building until now to worry about pictures. ;-) -- Frans ________________________________ Message 3 _____________________________________ Time: 01:13:46 PM PST US Subject: Re: Europa-List: Classic stall characteristics (High Top Mod) From: "Frans Veldman" A picture about my hi-top mod64B mod: [img:9080fbc341]http://www.privatepilots.nl/europa/modfranshi.jpg[/img:9080fbc341] Visit - www.EuropaOwners.org ________________________________ Message 4 _____________________________________ Time: 11:38:20 PM PST US From: "nwcmc@tiscali.co.uk" Subject: Re: Europa-List: Jos Okhuisen >As a poor-man's alternative, I now have the 912 return-line restrictor >located just behind the firewall (because there is a joint in the return >line there and because it creates more unrestricted vapour headspace in the >top of the return line); so, if the return line is severed at a point >forward of the firewall, the restrictor provides at least some restriction >to backflow from the tank; LAA know about this and approved the >installation. As the flow back to the tank is slow one idea might be to place a second inline restrictor by the tank (slightly larger orifice if considered necessary). Any fracture in the line between the firewall and the tank would result in a very limited flow rate of fuel. Nigel Charles How safe is your email? - http://www.tiscali.co.uk/products/securemail __________________________________________________________ ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.