I have a small circuit board that will convert a crank sensor (inductive pickup) to a TTL signal. I also have a device that has an LCD for displaying the data.
The problem with the crank sensor is that as I recall it only triggers once per revolution, I am not sure what the tachometer is looking for but I can find out as I have a 300SD. By the way here are some of the products I have built, www.sterntech.com Trampas -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of R A Bennell Sent: Friday, November 10, 2006 3:47 PM To: Mercedes Discussion List Subject: Re: [MBZ] Project to tickle your brains with.. Yes, I saw the post yesterday with the link to Roger Brown's site. I knew about him from my travels on the net relating to old Toyota 4X4s. The idea of using a crank sensor appeals. I just wondered what else I needed. Randy -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rich Thomas Sent: Friday, November 10, 2006 11:37 AM To: Mercedes Discussion List Subject: Re: [MBZ] Project to tickle your brains with.. You could do an LED and a light sensor with a white mark on the crank, of course that would be affected by whatever goop gets splashed up there, but something to wipe it off as it goes around... --R R A Bennell wrote: > What triggers the crank sensor on most new cars? Is there a magnet inbedded in the crank dampener/balancer/pulley > (whatever you wish to call it)? > IE - If I were to try this route to put a tach in my 76 300D, I assume I would have to attach something to the > balancer to trigger the sensor as there would not be anything from the factory. > > Randy > > -----Original Message----- > > Given the relatively ready supply of junkyard parts, I can't see any > reason not to just use them, it's nearly trivial. (As I believe the > front crank sensor is already there, at least on a lot of cars. Goes > to the diagnostic socket.) Even if you have to install a factory > sensor, it has to be easier than flanging up something yourself. > And running it all over, and designing circuitry. > > -- Jim > > _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
