---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Mon 03/29/10: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:52 AM - Re: Finnish people (Raimo Toivio) 2. 05:24 AM - Re: Antenna tuning (Bill & Sue) 3. 09:54 AM - Re: Stage 1 Parts For offer (flying farmer) 4. 01:01 PM - Re: Antenna Tuning (Fergus Kyle) 5. 02:37 PM - Re: Fuel dripping from airbox 914 ? (Frans Veldman) 6. 02:45 PM - Re: Antenna tuning (Frans Veldman) 7. 03:02 PM - Re: Fuel dripping from airbox 914 ? (Bob Borger) ________________________________ Message 1 _____________________________________ Time: 04:52:59 AM PST US From: "Raimo Toivio" Subject: Re: Europa-List: Finnish people Finnish peopleThanks Ferg, all the Finnish people make a low bow to you. Raimo ----- Original Message ----- From: Fergus Kyle To: 5EUROPALIST Sent: Saturday, March 27, 2010 4:33 PM Subject: Europa-List: Finnish people Quote, "There are many Finnish people... Raimo" Not nearly enough in my opinion, remembering the Mannerheim Line. Ferg ________________________________ Message 2 _____________________________________ Time: 05:24:47 AM PST US Subject: Europa-List: Re: Antenna tuning From: "Bill & Sue" Dave, I'm afraid I can't help much with the length either as I haven't put the antenna in our our Europa yet ( I should be filling right now!) and anyway I ignored the Europa design (not that there is anything wrong with it) and made an aerial of my own design for fun -it came out well, but won't help in sizing your antenna. I agree with Jim, the length quoted sounds a bit short- I would have expected about 55cm per leg, less a bit for the dielectric effects of mounting it on fibreglass. So maybe the final length in the book is about right, but I would be inclined to start a bit longer and cut to size. The suggestion of drawing a graph is a good one to allow you to visualise where you are starting from. One piece of reassurance- you can mess with the length all you like and it is very hard indeed to damage anything (a bit like fibreglass you can stick another bit on and have second crack at cutting it to size!) and, although it is nice to get it just so, small errors in the end result are likely to be unnoticeable in practice. PS Hi Jim, we met in NZ but I didn't realise you were a Ham too- small world! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=292181#292181 ________________________________ Message 3 _____________________________________ Time: 09:54:31 AM PST US Subject: Europa-List: Re: Stage 1 Parts For offer From: "flying farmer" All Interested Some has asked for the size of the Torque Tube. The Tube measures 38mm OD, The Sleeves (TP5, TP6) Measure 41.25mm OD the brass Bush (TP11) measures 40.75mm ID Ebay also listed my Items incorrectly so I have had to re list them here http://shop.ebay.co.uk/g-irpw/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p4340 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=292234#292234 ________________________________ Message 4 _____________________________________ Time: 01:01:38 PM PST US From: "Fergus Kyle" Subject: Europa-List: re: Antenna Tuning Cheers, I might mention something while tuning an antenna which might make some difference. Normally an antenna up and clear will reflect the qualities desired. But at our freqs, it=92s important to ensure that nothing resembling a nearby freq exists within about a =BD to 5/8 wavelength ( a bit less) ' say 300/127 m or something less than 1.5m. All this depends on orientation etc, so if a UHF or higher ferq is off the end of your tailplane dipole, not much loss of a spherical power plot. BUT if you insert a =BC-wave vertical in the plane of the diploe within a meter or so, expect the pattern of the latter=92s power plot to be skewed and it won=92t radiate spherically ' that is pieces of the pattern will be missing power (maybe straight ahead and you have to turn the a/c 30 degrees to get the tower ahead to pay attention). High is assumed but clear is also needed. Nuff sed. ferg ________________________________ Message 5 _____________________________________ Time: 02:37:17 PM PST US From: Frans Veldman Subject: Re: Europa-List: Fuel dripping from airbox 914 ? On 03/26/2010 05:51 PM, Bob Borger wrote: > Off the top of my head, I'd guess a sticky float or restriction in the fuel return line. It appeared to be a sticky float or valve. I took the carb out, cleaned it although I couldn't find anything serious that could have clogged the valve or float, just some residu left from evaporated fuel. Apparently that did it, no more fuel overflow, and the engine, after rebalancing the carbs, ran fine. My previous problem after a long pause, oil seeping into the turbo housing to be blown out at the first start, was this time almost non existent. Just a little bit of oil was collected in 4 months, far less than previous winter stop. I guess it was indeed a seal that needed to "settle". So, first flight can be performed any time now, as soon as weather and testpilots cooperate. ;-) Frans ________________________________ Message 6 _____________________________________ Time: 02:45:46 PM PST US From: Frans Veldman Subject: Re: Europa-List: Antenna tuning On 03/26/2010 10:43 PM, david park wrote: > I have just borrowed an SWR meter and am trying to tune my Comm > antenna. The manual says to tune by shortening until minimum reading at > 127.50 Well, somewhat contrary to what others tell you, I wouldn't make a big deal out of it. You just need to verify that the SWR is no higher than 2.5 anywhere in the frequency spectrum you intent to use. No need to make a graph in my opinion, just dial through the band, transmit on every 100kHz to verify that the SWR is acceptable. HAM's usually strive to perfection, but you aren't going to moon-bounce, DX, trying to reach the other end of the world with 1 milliwatt, or working with satellites. You have 10 Watts or so to spoil, have a very short cable in comparison to HAM-stations, are transmitting from a height HAM's usually can only dream upon, and without obstacles in your transmission path. You won't notice any SWR improvement from 1:2.5 to 1:1, even with a lossy cable. Just relax. BTW, I'm a HAM myself. The real challenge in airplanes is to keep the interference between avionics and your signal as minimal as possible, so spend your time on that, rather than chasing the perfect SWR. Just my 2 cents. Frans ________________________________ Message 7 _____________________________________ Time: 03:02:44 PM PST US From: Bob Borger Subject: Re: Europa-List: Fuel dripping from airbox 914 ? Frans, Great! Now lay in some aspirin to take care of the sore muscles in your face from the grin you are about to develop. Wishing you light breezes and severe clear. Have a great first flight. Bob Borger On Monday, March 29, 2010, at 04:28PM, "Frans Veldman" wrote: > >On 03/26/2010 05:51 PM, Bob Borger wrote: > >> Off the top of my head, I'd guess a sticky float or restriction in the fuel return line. > >It appeared to be a sticky float or valve. I took the carb out, cleaned >it although I couldn't find anything serious that could have clogged the >valve or float, just some residu left from evaporated fuel. Apparently >that did it, no more fuel overflow, and the engine, after rebalancing >the carbs, ran fine. > >My previous problem after a long pause, oil seeping into the turbo >housing to be blown out at the first start, was this time almost non >existent. Just a little bit of oil was collected in 4 months, far less >than previous winter stop. I guess it was indeed a seal that needed to >"settle". > >So, first flight can be performed any time now, as soon as weather and >testpilots cooperate. ;-) > >Frans > > ------------------------------------------------------------------------------------- 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.