Europa-List Digest Archive

Sat 01/10/09


Total Messages Posted: 10



Today's Message Index:
----------------------
 
     1. 05:18 AM - Re: polyswitches (Bill Henderson)
     2. 06:52 AM - Re: polyswitches (Frans Veldman)
     3. 09:42 AM - Re: sanding filler (Robert C Harrison)
     4. 12:42 PM - Re: sanding filler (Peter Timm)
     5. 02:29 PM - Re: sanding filler (craig bastin)
     6. 03:56 PM - Re: Bubble doors (JR Gowing)
     7. 09:09 PM - Re: Mixture control (Greg Fuchs)
     8. 09:29 PM - Re: polyswitches (Andrew Sarangan)
     9. 09:50 PM - Cutting off back of cockpit module (Greg Fuchs)
    10. 10:29 PM -  Fein saw (Greg Fuchs)
 
 
 


Message 1


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    Time: 05:18:24 AM PST US
    From: "Bill Henderson" <europabill@bellsouth.net>
    Subject: Re: polyswitches
    Craig, For what it's worth, that's what I'm planning on using in my Europa. I've designed and etched a printed circuit board for the prototype. There's been a lot of round & round on the use of poly fuses in lieu of circuit breakers, but I still think this is the best option. Just turn off the power to that particular fuse for a few second and it's reset. Don't ever have to replace, and it's simple. Just my 2 cents worth. Bill A010 Monowheel Classic Building since '95. When will it ever end..... ----- Original Message ----- From: "craig bastin" <craigb@onthenet.com.au> Sent: Friday, January 09, 2009 7:10 PM Subject: Europa-List: polyswitches > > for those of you up to the electrics stage, i found these > > > http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2592 > > > they look like they might be a good replacement for circuit breakers > > craig > > >


    Message 2


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    Time: 06:52:14 AM PST US
    From: Frans Veldman <frans@paardnatuurlijk.nl>
    Subject: Re: polyswitches
    craig bastin wrote: > > for those of you up to the electrics stage, i found these > > http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2592 > > they look like they might be a good replacement for circuit breakers It appears to me that these are PTC-resistors. Downside of these things are that they will never really cut the power, but remain in such a state that the heat development is just enough to increase the resistance enough to remain in some sort of balance. Another problem is their relatively high resistance. You will loose some voltage over these things, depending on the amount of current you are asking. Near their cut-off current, the voltage drop is sufficient to convert some of the energy into heat, it is the heat which will increase resistance even further, and that is why there is some limit in the amount of current you can ask from it. With other words: These things have no clear on-off states, but everything in between instead. Depending on your purpose, this is allowable, or it is not. It might be an option to power non-trivial small devices through them (like a GPS) where the current remains significant below the cut-off current, but I would not use them for, let's say, the fuel pumps, the flaps, or the radio. In general, all equipment with changing current demands and higher current demands are unsuitable. Oh, and you can't instantly reset them. They need to cool down first after they "tripped". Not bad for your GPS (unless you are in the middel of an GPS-IFR-approach), but not so smart for the fuel-pumps, flaps, etc. Actually, I would stay away from them. Just my 2 cents. -- Frans Veldman


    Message 3


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    Time: 09:42:26 AM PST US
    From: "Robert C Harrison" <ptag.dev@tiscali.co.uk>
    Subject: sanding filler
    Hi! Fred. I don't consider you've really got used to it until you've fallen asleep during sanding !(sweet dreams!) Regards Bob Harrison G-PTAG Do not archive. -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Fred Klein Sent: 10 January 2009 06:31 Subject: Europa-List: sanding filler I can't help but marvel at how well I'm getting to know every square inch of my little bird as I sand away everything which doesn't look like a Europa... I tip my hat to all who've been here... Fred A194 do not archive -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.


    Message 4


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    Time: 12:42:24 PM PST US
    From: "Peter Timm" <cptimm@telus.net>
    Subject: Re: sanding filler
    Yes, Fred Ivan Shaw described this as soul destroying. You have to build the classic wings to really enjoy it. I have talked to Alex, and he has sorted his problems and has been flying. Right now he has a health problem (and a snow problem), but hopes to overcome it in due course. Have fun. Peter ----- Original Message ----- From: "Fred Klein" <fklein@orcasonline.com> Sent: Friday, January 09, 2009 10:30 PM Subject: Europa-List: sanding filler > > > I can't help but marvel at how well I'm getting to know every square > inch of my little bird as I sand away everything which doesn't look > like a Europa... > > I tip my hat to all who've been here... > > Fred > A194 > > do not archive > > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > -------------------------------------------------------------------------------- Checked by AVG - http://www.avg.com 7:59 PM


    Message 5


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    Time: 02:29:44 PM PST US
    From: "craig bastin" <craigb@onthenet.com.au>
    Subject: sanding filler
    No NO you have it all wrong.... its a test of worthiness, to weed out those not worthy of owning a europa :) -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com]On Behalf Of Peter Timm Sent: Sunday, 11 January 2009 6:41 AM Subject: Re: Europa-List: sanding filler Yes, Fred Ivan Shaw described this as soul destroying. You have to build the classic wings to really enjoy it. I have talked to Alex, and he has sorted his problems and has been flying. Right now he has a health problem (and a snow problem), but hopes to overcome it in due course. Have fun. Peter ----- Original Message ----- From: "Fred Klein" <fklein@orcasonline.com> Sent: Friday, January 09, 2009 10:30 PM Subject: Europa-List: sanding filler > > > I can't help but marvel at how well I'm getting to know every square > inch of my little bird as I sand away everything which doesn't look > like a Europa... > > I tip my hat to all who've been here... > > Fred > A194 > > do not archive > > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > ---------------------------------------------------------------------------- ---- Checked by AVG - http://www.avg.com 7:59 PM Checked by AVG - http://www.avg.com 7:59 PM


    Message 6


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    Time: 03:56:10 PM PST US
    From: "JR Gowing" <jrgowing@bigpond.net.au>
    Subject: Re: Bubble doors
    Bob You can't take much notice of overall height of your complete body - Some people have long bodies and others have long legs! JR (Bob) Gowing UK Kit 327 in Oz do not archive ----- Original Message ----- From: "Robert Borger" <rlborger@mac.com> Sent: Monday, January 05, 2009 8:23 AM Subject: Re: Europa-List: Bubble > > Frank, > > There must be more foam or other packing in that seat area or > exceptionally thick seat cushions. I am 6 ft (72 in, 183 cm) tall and > I do not have any trouble fitting in my XS with standard Europa seat > cushions. I still have, at a minimum, another 2 in (5 cm) of head > space. > > Work more with those cushions before you go to the trouble of > replacing the doors/windows. > > Check six, > Bob Borger > Europa Kit #A221 N914XL, XS Mono, Intercooled 914, Airmaster C/S > http://www.europaowners.org/N914XL > (99.999% done) Essentially complete. Running Tests & Final Inspections. > 3705 Lynchburg Dr. > Corinth, TX 76208 > Home: 940-497-2123 > Cel: 817-992-1117 > > On Jan 4, 2009, at 15:06, Frank Kusserow wrote: > >> <frank@kusserow-online.com >> > >> >> Dear All, >> >> thanks for the Ideas. I cut into the seat base today and found an >> inch or so of styrofoam which I will remove before I get to the >> windows (because it might still be not be enough headroom). I am 185 >> cm (73 inches) tall and up to now I barely fit into the cockpit. Is >> that normal in the "Classic"? >> >> Regards from Germany, >> Frank > > -------------------------------------------------------------------------------- Checked by AVG - http://www.avg.com 4:32 PM -- We are a community of 5.8 million users fighting spam. The Professional version does not have this message


    Message 7


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    Time: 09:09:45 PM PST US
    From: "Greg Fuchs " <gregoryf.flyboy@comcast.net>
    Subject: Mixture control
    Terry, I like the idea of compensating the Bing carbs which would tend to run rich at high altitudes, anyway. Are you flying yet? Ie: Have you flown this arrangement, to see how well it worked, or how much fuel was being saved? Thanks in advance, Greg Fuchs, A050 Hi Remi, We are members of the Experimental Aircraft Association who have built an 'experimental aircraft'. As such, among other things not included in our standard kit, we have installed a mixture control on our 912S ....snip.. regards, Terry Seaver _____


    Message 8


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    Time: 09:29:55 PM PST US
    From: "Andrew Sarangan" <asarangan@gmail.com>
    Subject: Re: polyswitches
    There are pros and cons. Nothing beats the reliability and speed of fuses, but they are inconvenient to replace. Circuit breakers are more convenient although less reliable, but is a happy medium. Polyswitches are useful in unreachable areas, but are slower to trip and sensitive to ambient temperature. It depends on what you are trying to protect. If you are trying to protect your electronics from surges, then polyswitches are probably the least favorable. Your electronics would probably be fried before the switch trips. But in mechanical drives and motors they could be ok. On Sat, Jan 10, 2009 at 9:50 AM, Frans Veldman <frans@paardnatuurlijk.nl>wrote: > > > > craig bastin wrote: > craigb@onthenet.com.au> > > > > for those of you up to the electrics stage, i found these > > > > http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2592 > > > > they look like they might be a good replacement for circuit breakers > > It appears to me that these are PTC-resistors. Downside of these things > are that they will never really cut the power, but remain in such a > state that the heat development is just enough to increase the > resistance enough to remain in some sort of balance. Another problem is > their relatively high resistance. You will loose some voltage over these > things, depending on the amount of current you are asking. Near their > cut-off current, the voltage drop is sufficient to convert some of the > energy into heat, it is the heat which will increase resistance even > further, and that is why there is some limit in the amount of current > you can ask from it. > With other words: These things have no clear on-off states, but > everything in between instead. Depending on your purpose, this is > allowable, or it is not. > > It might be an option to power non-trivial small devices through them > (like a GPS) where the current remains significant below the cut-off > current, but I would not use them for, let's say, the fuel pumps, the > flaps, or the radio. In general, all equipment with changing current > demands and higher current demands are unsuitable. > > Oh, and you can't instantly reset them. They need to cool down first > after they "tripped". Not bad for your GPS (unless you are in the middel > of an GPS-IFR-approach), but not so smart for the fuel-pumps, flaps, etc. > > Actually, I would stay away from them. > > Just my 2 cents. > > -- > Frans Veldman > >


    Message 9


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    Time: 09:50:24 PM PST US
    From: "Greg Fuchs " <gregoryf.flyboy@comcast.net>
    Subject: Cutting off back of cockpit module
    To list, When I was marking the cockpit module for cutting a long time ago, it seemed like the scribe lines at the sides of the module (near the back end) went up in an angled, circular fashion as seen in the picture. I assume that most people cut the scribe line parallel to the (already cut)opening. Did anyone see it like I did, and cut the way I have it marked? An advantage of cutting it that way would be that it would give more surface area for the glue to hold the CP module to the fuselage, in that area. Regards, Greg The extra picture: be careful who comes in to the hangar (and lurks in wait) to watch you build! It is hard to tell from the picture, but 'it' was a pretty good size, or at least a runner up. Last years winner had black and white colored hairs all around its legs and body. I had difficulty getting pictures of him. He seemed to know that I was on to him. Both have met their makers :)


    Message 10


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    Time: 10:29:33 PM PST US
    From: "Greg Fuchs " <gregoryf.flyboy@comcast.net>
    Subject: Fein saw
    The Fein saw is an oscillating saw which seems to cut through many hard surfaces, including fiberglass. When it appeared on a TV commercial, I wanted to buy this saw to try on the Europa, until the large price tag ( I think it was around $350 US dollars, or so. Ian Rickard discussed this saw on page 12 of the December issue of The Europa Flyer. I noticed that there is a knock-off of this saw at Harbor Freight. It is new to them, and appeared in the adds over Christmas on sale for 39.99 (down from 49.99). If anyone has tried this saw to check its reliability/working, let me know. Meanwhile, I am in no hurry, and waiting for it to go on sale again. Thanks, Greg Fuchs A050 Do not archive




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