DIY_EFI Digest Sunday, 22 September 1996 Volume 01 : Number 283 In this issue: Re: Tom Cloud's self tuning EFI Idea Finding/constructing a dyno Re: Acceleration of Vehicles See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Thor Johnson Date: Sat, 21 Sep 1996 08:52:44 -0400 (EDT) Subject: Re: Tom Cloud's self tuning EFI Idea On Fri, 20 Sep 1996, George M. Dailey wrote: > Tom, I think, what you are proposing is hardware and software that will > dyno tune the engine as you drive. Kinda like having a personal staff of > performance engineers in a black box to continuously search for that state > of "ultimate tune" for your hot rod. > I would be interested in exploring this futher. It is certianly possible > with todays off the shelf components. This would be a DIY'ers dream come true. I'll keep lookinghere for ideas/sensors/methods. This is what I hope to accomplish with my homebrew engine mgmt system for FSAE. I think the limiting factor (as tuning speed goes) will be response of the sensors - I've head that O2 sensors can take up to 1sec to responsd... can someone comment on this? (seems to be the slowest sensor...) Thor Johnson johnsont@xxx.edu http://falcon.mercer.peachnet.edu/~johnsont Have you seen the WarpMap lately? http://falcon.mercer.peachnet.edu/~johnsont/warpmap ------------------------------ From: "Michael Farrugia" Date: Sat, 21 Sep 1996 09:32:55 -0700 Subject: Finding/constructing a dyno Hello everybody, Currently I am trying to build an electronic engine management unit. To be able to quantize the amount of improvement made I think I would be needing a dynamometer. In fact I am considering buying one depending on the price. Does anyone know the price range for a sinple dynamometer which should be capable to dissipate about 250 bph. I would consider buying new or second-hand depending on the price. If the price is prohibitive I would consider constructing one. So if anyone has ideas on what to use to dissipate the power it would be greatly appreciated. Thanks in anticipation Michael Farrugia - --------------------------------------------------------- Get Your *Web-Based* Free Email at http://www.hotmail.com - --------------------------------------------------------- ------------------------------ From: "John Faubion" Date: Sat, 21 Sep 1996 22:15:41 -0500 Subject: Re: Acceleration of Vehicles > I was wondering how you measured the acceleration of your dragster. > This is something I was planning to do with an Analog devices > accelerometer. > Any information would be appreciated. RacePak makes a data logging system that has an accelerometer built into it. From looking at it the ADXL-05 from Analog Devices should work very well. John Faubion jfaubion@xxx.net ------------------------------ End of DIY_EFI Digest V1 #283 ***************************** 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".