Tachometer rebuild |
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Tachometer rebuild |
totle |
Sep 13 2018, 06:27 AM
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#1
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Newbie Group: Members Posts: 43 Joined: 18-October 10 From: Norway Member No.: 12,280 Region Association: Europe |
Hi,
Anyone that have a DIY description of how to rebuild a 7k Tach to a 10k Tach ? and from 4 cyl to 6. I would think that there is someone who has done this. Any potmeter adjustments, og parts that needs to be replaced ? I know that NHS does this, but would be nice to do it and just buy a new faceplate |
timothy_nd28 |
Sep 18 2018, 09:06 AM
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#2
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Advanced Member Group: Members Posts: 2,299 Joined: 25-September 07 From: IN Member No.: 8,154 Region Association: Upper MidWest |
Sounds like Stephen is all in with this project, we should expect some custom face dials from him within the week! (IMG:style_emoticons/default/biggrin.gif) That masking method sounds absolutely insane, I wouldn't have the patience for something like that. The laser etching sounds promising, could this be done on some plastic poly, so that the tic marks and lettering could be illuminated from the backlight? Could that also be done so the gauge still looks stock during the day?
The capacitor across the motor windings is very interesting. Our tachometer has been mapped out on the TINA circuit simulator, when I get a free minute, I'll plug in the capacitor with the values you spec'd out to see how it performs. The stock tachometer does have limitations with folks doing different engine combinations. My tach hack solution was developed to kill many birds with one stone. Updating to a servo style motor is huge, no tach bounce, dual input voltage circuitry to allow for low 5 volt inputs and also high voltage from ignition points, configurable of number of cylinders, and most importantly being cheap, 30 dollars! I made this hack public to the forum to help fellow teeners with their project. The 10k tachometer is silly for a stock 4 engine. Over that past 3-4 years, I've only been asked a few times about recreating one. However, I do like helping people out and sounds like a fun project. |
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