X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 01 Jan 2006 22:53:35 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d23.mx.aol.com ([205.188.139.137] verified) by logan.com (CommuniGate Pro SMTP 5.0.5) with ESMTP id 907669 for lml@lancaironline.net; Sat, 31 Dec 2005 20:05:21 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.137; envelope-from=RWolf99@aol.com Received: from RWolf99@aol.com by imo-d23.mx.aol.com (mail_out_v38_r6.3.) id q.2d8.1b7f81 (3866) for ; Sat, 31 Dec 2005 20:04:29 -0500 (EST) From: RWolf99@aol.com X-Original-Message-ID: <2d8.1b7f81.30e8849d@aol.com> X-Original-Date: Sat, 31 Dec 2005 20:04:29 EST Subject: Connectors X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1136077469" X-Mailer: 9.0 SE for Windows sub 5022 X-Spam-Flag: NO -------------------------------1136077469 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Greyhawk writes -- <> Actually, it is much, much worse. Not on orbit, of course, but on the rocket ride up there. I have witnessed vibration testing to the spectrum which these things are qualified -- it makes our prehistoric 4-bangers seem as smooth as turbines. Roll your stereo down a long flight of stairs and you'll begin to get a feeling for what spacecraft have to survive. I asked the electronics guys at work (Aviation Technology Group, makers of the Javelin Jet) which connectors I should use. They (very apologetically) told me that the MS38999 connectors were the only way to go. They know these are the expensive ones -- these guys used to work on kitplanes as well and know where we're coming from. They told me that I was going to be spending a pile of money on connectors but that it would be money well spent for reliability. It's basically the same thing that Brent is saying -- cheap connectors are false economy. Use the good ones, and you'll be paying so much for them that you'll only install them where you really need them. I do not know if MS38999 connectors (known as "thirty-eight triple-nine" connectors) are the same connectors as the AMP Circular Plastic Connectors that Brent recommends. - Rob Wolf -------------------------------1136077469 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Greyhawk writes --

<<Spacecraft just don't shake like a four-cylinder=20 engine.>>

Actually, it is much, much worse. Not on orbit, of course, but on= the=20 rocket ride up there. I have witnessed vibration testing to the spectr= um=20 which these things are qualified -- it makes our prehistoric 4-bangers seem=20= as=20 smooth as turbines. Roll your stereo down a long flight of stairs and=20 you'll begin to get a feeling for what spacecraft have to survive.

I asked the electronics guys at work (Aviation Technology Group, makers= of=20 the Javelin Jet) which connectors I should use. They (very apologetica= lly)=20 told me that the MS38999 connectors were the only way to go. They know= =20 these are the expensive ones -- these guys used to work on kitplanes as well= and=20 know where we're coming from. They told me that I was going to be spen= ding=20 a pile of money on connectors but that it would be money well spent for=20 reliability.

It's basically the same thing that Brent is saying -- cheap connectors=20= are=20 false economy. Use the good ones, and you'll be paying so much for the= m=20 that you'll only install them where you really need them.

I do not know if MS38999 connectors (known as "thirty-eight triple-nine= "=20 connectors) are the same connectors as the AMP Circular Plastic Connectors t= hat=20 Brent recommends.

- Rob Wolf

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