Re: Harbor Freight Tachometer

Simon Kovara /
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because this tach is supposed to be sensing the impulse from a single ignition coil running through a distributor, the waste spark/ non waste spark is a moot point. take the # of cylinders and divide by 2 to get the number of coil impulses per engine rotation (4 stroke) so for example, a v8 has 4 coil impulses per revolution to a 4 cylinder's 2 coil impulses. it goes without saving that a two stroke has a coil impulse for every cylinder per revolution.

SO, if the tach is set to 4 cylinder(4stroke) mode, then it will interpret the 1 impulse/rev. of a single cylinder 2 stroke as 1/2 of a revolution of a 4 cyl. 4 stroke (2 impulses/rev.)

IF the impulse were to be taken from a single plug wire of a multi cylinder 4 stroke with a waste spark electronic ignition (like virtually ALL modern vehicles) then there would be no difference in the number of impulses per revolution between a two stroke or four stroke engine, reguardless of cylinder count. this is how the trail tech tach works.

pretty fuckin simple in the grand scheme o things imho.

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Subject Written By Posted
  Harbor Freight TachometerTopic by: Mars   Mars   08/07/12 11:44AM
  Re: Harbor Freight TachometerRe: mit mortso mit mortso 08/07/12 12:21PM
  Re: Harbor Freight TachometerRe: Mars   Mars   08/07/12 01:35PM
  Re: Harbor Freight TachometerRe: LSLB RXb LSLB RXb 08/07/12 01:49PM
  Re: Harbor Freight TachometerRe: Mars   Mars   08/07/12 02:00PM
  Re: Harbor Freight TachometerRe: Vincent Hill Vincent Hill 08/07/12 02:42PM
  Re: Harbor Freight TachometerRe: Mars   Mars   08/07/12 02:46PM
  Re: Harbor Freight TachometerRe: Ross Maser Ross Maser 08/07/12 03:09PM
  Re: Harbor Freight TachometerRe: Mars   Mars   08/07/12 03:36PM
  Re: Harbor Freight TachometerRe: Deadped Ryan Deadped Ryan 08/07/12 03:37PM
  Re: Harbor Freight TachometerRe: Deadped Ryan Deadped Ryan 08/07/12 03:27PM
  Re: Harbor Freight TachometerRe: Blaine- The artist formerly known as Plumber Crack "(OFMC)" Blaine- The artist formerly known as Plumber Crack "(OFMC)" 08/17/12 11:09PM
  Re: Harbor Freight TachometerRe: Deadped Ryan Deadped Ryan 08/17/12 11:59PM
  Re: Harbor Freight TachometerRe: Ross Maser Ross Maser 08/07/12 05:36PM
  Re: Harbor Freight TachometerRe: Ross Maser Ross Maser 08/07/12 05:42PM
  Re: Harbor Freight TachometerRe: Jimbo Grand Daddy Jimbo Grand Daddy 08/07/12 10:03PM
  Re: Harbor Freight TachometerRe: Born to be WillD Born to be WillD 08/08/12 02:25PM
  Re: Harbor Freight TachometerRe: Born to be WillD Born to be WillD 08/08/12 02:54PM
  Re: Harbor Freight TachometerRe: Born to be WillD Born to be WillD 08/08/12 02:59PM
  Re: Harbor Freight TachometerRe: Mars   Mars   08/08/12 03:44PM
  Re: Harbor Freight TachometerRe: Ross Maser Ross Maser 08/18/12 09:16AM
  Re: Harbor Freight TachometerRe: Blaine- The artist formerly known as Plumber Crack "(OFMC)" Blaine- The artist formerly known as Plumber Crack "(OFMC)" 08/18/12 10:21AM
  Re: Harbor Freight TachometerRe: Deadped Ryan Deadped Ryan 08/18/12 10:40AM
  Re: Harbor Freight TachometerRe: Deadped Ryan Deadped Ryan 08/18/12 12:18PM
  Re: Harbor Freight TachometerRe: Ross Maser Ross Maser 08/18/12 11:55AM
  Re: Harbor Freight TachometerRe: Ross Maser Ross Maser 08/18/12 01:17PM
  Re: Harbor Freight TachometerRe: Deadped Ryan Deadped Ryan 08/19/12 01:26AM
  Re: Harbor Freight TachometerRe: Blaine- The artist formerly known as Plumber Crack "(OFMC)" Blaine- The artist formerly known as Plumber Crack "(OFMC)" 08/18/12 03:59PM
  Re: Harbor Freight TachometerRe: Scooterbike G Scooterbike G 08/18/12 07:00PM
  Re: Harbor Freight TachometerRe: Jason Collier Jason Collier 08/19/12 10:49AM
  Re: Harbor Freight TachometerRe: Blaine- The artist formerly known as Plumber Crack "(OFMC)" Blaine- The artist formerly known as Plumber Crack "(OFMC)" 08/19/12 11:59AM
  Re: Harbor Freight TachometerRe: Simon Kovara Simon Kovara 08/19/12 10:25PM
  Re: Harbor Freight TachometerRe: Mars   Mars   08/18/12 12:23AM
  Re: Harbor Freight TachometerRe: Blaine- The artist formerly known as Plumber Crack "(OFMC)" Blaine- The artist formerly known as Plumber Crack "(OFMC)" 08/18/12 01:29AM
  Re: Harbor Freight TachometerRe: Deadped Ryan Deadped Ryan 08/18/12 02:05AM

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