DIY_EFI Digest Sunday, 20 October 1996 Volume 01 : Number 319 In this issue: Re: Wires and such Re: Wires and such Re: Wires and such Virtual Instruments Bosch Stuff See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Frank_Mallory@xxx.com (Frank Mallory) Date: Sat, 19 Oct 1996 09:17:30 -0400 Subject: Re: Wires and such d>Okay, you said it, but did anyone get it?? If you're gonna crimp -- d>and d>want it to be reliable -- hafta use the right tool!! Trust me, it's d>not the Champ or Klein you gots in your tool box. A good tool that d>works on most crimp-ons costs between $35 and $50. Snap-ON sells one d>(Forget who really makes it). Which type is preferred, the type that stabs the connector, or the type that merely compresses it? ------------------------------ From: "Johnny" Date: Sat, 19 Oct 1996 14:18:54 -0700 Subject: Re: Wires and such The AMP tool die set actually compresses the connector without flattening it. For this to work the best, you need to use the connectors that go with the die set you are using. IOW, Amp dies --> AMP connectors. If you use the die set that punches the connector you need to use connectors made for this. They have insulators that don't punch through. AMP, Belden, WireWorks?, all make a good line of connectors and multiple die set crimpers. Once you have the crimper tool itself, the extra die sets are about 30 bucks a piece. I think there are about 30-40 different die sets available for everything from standard butt connectors to BNC's to Moldex terminals to Ignition cables. Any excuse to get another special tool. ;-) - -j- - ---------- > From: Frank Mallory > To: diy_efi@xxx.com > Subject: Re: Wires and such > Date: Saturday, October 19, 1996 6:17 AM > > > d>Okay, you said it, but did anyone get it?? If you're gonna crimp -- > d>and > d>want it to be reliable -- hafta use the right tool!! Trust me, it's > d>not the Champ or Klein you gots in your tool box. A good tool that > d>works on most crimp-ons costs between $35 and $50. Snap-ON sells one > d>(Forget who really makes it). > > Which type is preferred, the type that stabs the connector, or the type that > merely compresses it? ------------------------------ From: cloud@xxx.edu (tom cloud) Date: Sat, 19 Oct 1996 16:43:51 -0500 Subject: Re: Wires and such > > d>Okay, you said it, but did anyone get it?? If you're gonna crimp -- > d>and > d>want it to be reliable -- hafta use the right tool!! Trust me, it's > d>not the Champ or Klein you gots in your tool box. A good tool that > d>works on most crimp-ons costs between $35 and $50. Snap-ON sells one > d>(Forget who really makes it). > >Which type is preferred, the type that stabs the connector, or the type that >merely compresses it? The definition of a quality crimp connection:: it must be stronger than the wire. If you pull on it, it should break somewhere other than at the crimp (obviously, this is a 'sample' of several pulls). I.E. the crimp must not weaken the wire nor can it pull apart. The 'stak-on' type connectors commonly used in autos, etc require the crimper that puts a dimple in the connector. Not the VACO or similar crimper. The quality of the connector is also important. If a magnet attracts it -- trash it. Should be plated copper, beryllium copper or phosphor bronze. Tom Cloud ------------------------------ From: jac@xxx.us Date: Sat, 19 Oct 96 20:27:32 PDT Subject: Virtual Instruments The October 1996 issue of SPORT AVIATION magazine has an article about a new plane by Burt Rutan. They use an embedded Mac to monitor the plane and a power book as a display and input device. They take the powerbook home to plan flights and to analyze data. In an aircraft, displacing a panel full of instruments will buy both computers and then some. These are respected people and they made the system work. The whole article is a lesson in cutting loose from conventional design. I reccomend the article as a study in both topics. - ------------------------------------- jac@xxx.us 10/19/96 20:27:32 ------------------------------ From: DRM Date: Sat, 19 Oct 1996 16:46:00 -0700 Subject: Bosch Stuff Does anyone know of a way to adapt either a Hotwire Air flow meter or use a MAP sensor in leiu of any AFM on a L-Jetronic or Motronic ECU? I need to get more air/fuel in my Alfa Romeo and have both systems available. I understand that the AFM controls injector duration based on air flow as measured by the deflection of the flap or cooling of the hotwire. Simply installing a larger AFM would probably cause a lean condition, especially at part throttle. Is it possible to add or subtract resistance to match the voltage curve to the increased air flow and what would be the easiest way to measure this? - o2 sensor? - EGT? Be gentle, my electronics knowledge is basically ohms law and some vacuum tube theory. OK, I'm old! Dave Miller Deltona, Florida USA ------------------------------ End of DIY_EFI Digest V1 #319 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".