Re: Harbor Freight Tachometer

Born to be WillD /
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arite word:

the controllers in those takes a pulse reading based off resistance, selected by the switch for different pulse settings and assuming 4 stroke with no wasted spark (i.e. a 4 cylinder throws 2 sparks per revolution, 6 -> 3 etc.)

so you'd just need to switch the resistor for any one of the positions (or use a variable resistor) to vary the resistance to make it read properly at 1 spark per revolution.

probably a 1/x relation?

I feel like you will be the one to figure this out. but you could measure resistances for the different settings and get a trend of resistances vs pulse/revolution and extrapolate down to 1 pulse per revolution

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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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