X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 50 [XX] (67%) RECEIVED: IP not found on home country list (33%) BODY: contains stock spam words Return-Path: Received: from [201.225.225.169] (HELO cwpanama.net) by logan.com (CommuniGate Pro SMTP 5.1.6) with ESMTP id 1850923 for flyrotary@lancaironline.net; Tue, 20 Feb 2007 08:28:22 -0500 Received-SPF: none receiver=logan.com; client-ip=201.225.225.169; envelope-from=rijakits@cwpanama.net Received: from [201.224.94.164] (HELO usuario5ebe209) by frontend3.cwpanama.net (CommuniGate Pro SMTP 4.2.10) with SMTP id 100941442 for flyrotary@lancaironline.net; Tue, 20 Feb 2007 08:34:05 -0500 Message-ID: <002601c754f2$d95343c0$a45ee0c9@usuario5ebe209> From: "Thomas y Reina Jakits" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Off Topic request - Re: [FlyRotary] ATC fuses with manual or auto-reset Date: Tue, 20 Feb 2007 08:27:14 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="Windows-1252"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 Thanx Jhon, I didn't mean illegaly aquired OEM! Probably have to use some regular ones... :)) Thomas ----- Original Message ----- From: "John Downing" To: "Rotary motors in aircraft" Sent: Tuesday, February 20, 2007 7:56 AM Subject: [FlyRotary] Re: Off Topic request - Re: [FlyRotary] ATC fuses with manual or auto-reset > Thomas, having spent four years in an electrical harness plant, unless you > know someone in Mexico or Japan to do alittle midnight requisition, I > don't > believe you will find those switch's. JohnD > ----- Original Message ----- > From: "Thomas y Reina Jakits" > To: "Rotary motors in aircraft" > Sent: Monday, February 19, 2007 9:26 AM > Subject: [FlyRotary] Off Topic request - Re: [FlyRotary] ATC fuses with > manual or auto-reset > > >> By the way, >> >> does anyone know a source for OEM-style switches? >> I would like to get some extra equipment for my Toyota, but >> a) OEM switches are outrageously expensive >> b) Not in stock either... >> >> I know there are manufacturers that supply specifically that market, but > for >> some reason I am not capable to find any!! >> >> Thanx for your help, >> >> Thomas J. >> >> >> ----- Original Message ----- >> From: "Chris Sargent" >> To: "Rotary motors in aircraft" >> Sent: Sunday, February 18, 2007 6:57 PM >> Subject: [FlyRotary] ATC fuses with manual or auto-reset >> >> >> > >> > Waytek sells the ATC fuses below that have either a manual or >> > auto-reset >> > capability. >> > >> > This offers some options to those deciding between circuit breakers or >> > fuses. >> > >> > Link to the Waytek PDF catalog page: >> > >> > http://order.waytekwire.com/IMAGES/M37/catalog/219_083.PDF >> > >> > >> > 5-30 Amp, low-profile, manual reset (Type 1) >> > >> > 10-30 Amp, manual reset (Type 1) >> > >> > 10-30 Amp, auto-reset (Type 3) >> > >> > >> > 5-30 Amp w push-to-trip test feature >> > >> > >> > Regards, >> > Chris Sargent >> > >> > -----Original Message----- >> > From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On >> > Behalf Of Bulent Aliev >> > Sent: Sunday, February 18, 2007 7:19 AM >> > To: Rotary motors in aircraft >> > Subject: [FlyRotary] Re: CBs and fuses >> > >> > In my plane for everything electrical I installed, I asked myself: >> > can I fly without this item? And accordingly decided on CB or fuse. >> > A CZ builder had followed the plans and had installed the electric >> > nose gear fuse in the "per plans" location under the passenger seat. >> > He takes a passenger for a flight, but on retraction, his nose wheel >> > is cocked , hits the bottom of the fuselage and pops the fuse. >> > Something goes wrong with the manual override too. Now he asks the >> > passenger to unbuckle, turn around and put his butt against the >> > windshield, so he can replace the fuse while flying the plane at the >> > same time. If he had spent few dollars on a CB, he could have pushed >> > it in and flown with the gear down. >> > Buly >> > On Feb 18, 2007, at 7:35 AM, Thomas y Reina Jakits wrote: >> > >> >> Hi Al, >> >> >> >> interesting!! >> >> >> >> Next chance I have I will try to find out more about this >> >> (reasoning for use of fuses over CB's in this helicopter). >> >> I don't really buy the "repair after trip" -reason as the result is >> >> the same. >> >> Whatever caused the fuse or CB to trip, it should be repaired. What >> >> really happens is that the fuse is replaced - if it doesn't trip >> >> immediately, no one will look any deeper into it, than a >> >> "look" (unfortunately...), .... until it trips again. >> >> A lot of trips can be caused by changing environment (heat, >> >> humidity, etc.) that bring the conditions for over current just to >> >> the trip point, but will not under normal conditions. >> >> However I am no specialist, not even building anything at this time >> >> - so, I will try to find out for this specific application (AS350B3) >> >> >> >> Thomas >> >> >> >> PS: First thing I am going to do is to consult the Maintenance/ >> >> Repair manual.... >> >> ----- Original Message ----- >> >> From: Al Gietzen >> >> To: Rotary motors in aircraft >> >> Sent: Saturday, February 17, 2007 6:10 PM >> >> Subject: [FlyRotary] CBs and fuses >> >> >> >> >> >> Eurocopter Factory Instructors are VERY COMPETENT in Eurocopter >> >> Helicopter Systems!! >> >> >> >> There is absolutely NO doubt that he knows the difference between >> >> fuses and breakers and WHY either one would be used. >> >> >> >> >> >> Thomas; >> >> >> >> Certainly not impugning the competence of the flight instructors; >> >> just suggesting the design engineers may have other reasons than >> >> cost. One may be reliability. The reliability of CBs goes down >> >> significantly after they have experienced a 'trip'. I recall >> >> reading one experts opinion that a CB should be replaced after a >> >> 'trip'. Yeah; seems extreme. The modern philosophy of circuit >> >> design is to design for fault tolerance, so a fault; once causing >> >> the protection device to open, is left for repair when you land. >> >> >> >> >> >> The key for using fuses is fault tolerant circuit design and proper >> >> selection and sizing of fuses. Having done this; studies suggest >> >> that the fuse offers higher reliability and lower cost. >> >> >> >> >> >> There certainly reasons for either CBs or fuses, and I have both in >> >> my plane. For my flight critical circuits I opted for simple, >> >> fault tolerance and fuses. I wouldn't argue with someone making a >> >> different choice. >> >> >> >> >> >> FWIW, >> >> >> >> >> >> Al >> >> >> >> >> > >> > >> > -- >> > Homepage: http://www.flyrotary.com/ >> > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >> > >> > >> > -- >> > Homepage: http://www.flyrotary.com/ >> > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >> >> >> -- >> Homepage: http://www.flyrotary.com/ >> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/ >