So I was scrolling through YouTube when I came across this video (27) Onboard F1 McLaren MP4/1 with Steve Hartley - YouTube. And as I was looking, I saw that the tachometer was choppy, and not smooth like modern-day cars. I also do some sim racing, and on the old cars, the tachs are choppy like this. I always thought the tachometers ran off the flywheel, allowing for a smooth tach, but I guess not, so how do these work?
EDIT: here's another one (28) REUNION Lotus 79 Formula 1 Visor Cam - YouTube
I drive a Dodge Caliber 2011 with manual transmission. I like accelerating quickly, so I stay longer in the lower gears.
The problem is, the car doesn’t have a tachometer, so I dont know when is “too fast” in a given gear. For example, when I’m really flooring it, I’ll stay in 1st until ~25 mph, 2nd until ~45, and 3rd until ~65.
Once, while experimenting, I stayed in 1st until 35 mph and it seemed like the clutch disengaged or something and I was forced to switch to 2nd gear.
I figure I can go a little faster in each gear than what I’ve listed, maybe until the clutch in each gear “disengages” like it did in 1st, but I dont want to damage anything.
Does anyone know what brand/model tachometer was used in Initial D after the 20V blacktop was installed? And if its even a real one you can buy?
While Mac and the team delve into the world of Italian car culture in order to track down a crime boss-in-hiding, Mac must lean on Desi when he discovers that he is losing the ability to control his hands. Also, Mac and Desi move in together and Riley reveals the truth about her secret team of hackers to Russ.
Title. Thanks
As it works sometimes but not often it's good to know it's not completely broken but the only thing I could think is that it's not earthed properly?
I would really like to add a tachometer to my 240 (89" 245) but I can't afford to get a genuine Volvo one. Anyone know of a decent aftermarket tachometer with compatible wiring that would fit into the normal gauge spot next to the dash?
This is probably a stupid question, but I'm looking at small used cars and most peugeot 107, citroen C1 and toyota aygo seem to be missing their tachometers (see image).
How are you supposed to know when to shift without the tachometer?* Can you just go without? Do these cars have an option to show the revs in the tiny digital display instead of other stuff like fuel level and temperature? What am I missing?
* I know that once you're experienced and used to a car you can tell from the sound of the engine, but what about people with little experience or who haven't driven in a long time?
I tried to google this but I've had no luck trying to find an explanation for the missing tachometer (mostly I just get sites that sell them).
https://preview.redd.it/lcf9etwepzk61.png?width=988&format=png&auto=webp&s=049c4b2ac72eefa65d5a730e415e6174fd48d34a
Would putting a 5amp fuse at the end of a 20amp fuse series circuit cause issues? Is it logical? Do I need to wire it some other way?
Loving my spanking brand new Mazda 3 Sport GT premium package in polymetal grey. The dealer screwed up and i didn't get my satin black wheel package but that will be rectified shortly. I dont have a decent pic yet.
The only minor issue i'm having is with the tachometer. I have an automatic but i use the manual mode 90% of the time. However, i also listen to my tunes 100% of the time. Combine the very quiet interior with the tunes blasting and it is impossible to hear the engine and as such i need to rely on the tachometer to hone my shifting.
The issue is the placement of the tachometer which is in a spot that makes it awkward to keep an eye on it and i will sometimes end up over-revving because i cant hear the engine and i'm too focused on the road and take my eyes of the meter.
Its too bad that you cant modify the display to change the position of the meter especially given it is digital. What would be nice and probably feasible would be to allow for a digital display of the meter through the active driving display. The only other option is to turn down the tunes but thats no fun...
Anyone know of any work arounds? Does Mazda have a feedback option for customers and do they actually take them into consideration?
So I recently got my fiero back up and running after sitting for a while, I am going 55 while the tachometer reads 4200 RPM although it doesn't sound like that much. Any suggestions? I have read forums and I can't find anything that answers my questions. Hopefully someone here can? I have a 2.8, 3 speed automatic.
I have a new HRX 217 that I believe is running rich, due to the previous owner tinkering with the carburetor.
Does anyone know if I can use a photo sensor tachometer (see link) to test the rpm on my honda engine?
https://www.harborfreight.com/digital-photo-sensor-tachometer-66632.html
I would like to work on this today and this the only think I'm seeing locally. The typical wrap around tachometers from amazon are not available in any stores around here.
How would I test the RPM with a photo sensor?
Good morning crown vic mafia, I own a 2001 CVPI and there is no tachometer as most of you know. I have a tach to put in, but need the tach signal. I don't feel like dropping $100 on a tach adapter, so I'm opting to attempt to build one myself. Found some guides and plans, but want to see if anyone has attempted this feat. To my understanding, it's a transistor, a resistor, a diode, a relay coil, and some wires (much cheaper than $100, probably like $5 max). If you have any info or experience, please lmk and I'll share as I attempt
All it is, is the physical dial is off, I just need to reset it, but if someone could tell me how many RPM you’re doing while going 30mph in 4th gear, that would be very helpful
I have tried to use both the RPi.GPIO and pigpio but both gives me humongous numbers back when using the detect event functionality.
Do I need a resistor or something to make it work?
I have some A12x25 PWM fans connected through a FH-10 powered by a wallsocket to molex to sata powerbrick and connected the pwm signal to one of the pwm capable GPIO pins for HW support when testing with pigpio and the tach signal to one of generic GPIO.
I dont understand why the calculation (2 changes in state each rotation) gives me several tens or hundreds of thousands of rpm. The event change callbacks gets called way WAY too often and I do not understand why.
Here is a whitepaper on how it is supposed to behave: https://noctua.at/pub/media/wysiwyg/Noctua_PWM_specifications_white_paper.pdf
If this has been answered previously, I apologise - but what do the numbers mean for the turbo? I see it goes from -.5 to +1.5.
I drive a Dodge Caliber 2011 with manual transmission. I like going fast and accelerating quickly, so I stay longer in the lower gears.
The problem is, the car doesn’t have a tachometer, so I dont know when is “too far” in a given gear. For example, when I’m really flooring it, I’ll stay in 1st until ~25 mph, 2nd until ~45, and 3rd until ~65.
Once, while experimenting, I stayed in 1st until 35 mph and it seemed like the clutch disengaged or something and I was forced to switch to 2nd gear.
I figure I can go a little faster in each gear than what I’ve listed, maybe until the clutch in each gear “disengages” like it did in 1st, but I dont want to damage anything.
