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Engine Specific Info and Questions => IDI Engine => Topic started by: greenbert on February 04, 2008, 11:33:48 am

Title: Tiny-Tach
Post by: greenbert on February 04, 2008, 11:33:48 am

Is anyone running these on the cars?

http://www.tinytach.com/tinytach/diesel.php

Title: Tiny-Tach
Post by: rabbitman on February 04, 2008, 12:43:45 pm

yup, I've been running one for a little over a year now. I've had a little trouble with it, like it went into lockup mode so I called tinytach and they told me how to fix it. I really like having it, it's no good for racing though 'cause it responds to slow.

Title: Tiny-Tach
Post by: 935racer on February 04, 2008, 01:32:12 pm

Quote from: "rabbitman"

yup, I've been running one for a little over a year now. I've had a little trouble with it, like it went into lockup mode so I called tinytach and they told me how to fix it. I really like having it, it's no good for racing though 'cause it responds to slow.

That is really good to know, I have been considering one for a while, the delay would piss me off for sure.

Title: Tiny-Tach
Post by: rabbitman on February 04, 2008, 01:46:26 pm

one second delay, plus it's digital which ain't as good. I just looked at they're website and they sold out and then they're gonna sell a better one. :shock:

Title: Tiny-Tach
Post by: greenbert on February 04, 2008, 06:00:50 pm

Yea I read about the delay, but i'm not going to be racing so I can live with it. I figured it would be easier and cheaper just to pick this up rather then hassle with a new cluster.

Title: Tiny-Tach
Post by: mtnsammy on February 04, 2008, 06:37:10 pm

I use it for the hour meter. I can better gage when to service the oil and fuel filter by the number of hours. Since I am off road mostly and running low speeds the miles are not as important as the hours of use. I like the tiny tac a lot.

Title: Tiny-Tach
Post by: Vincent Waldon on February 04, 2008, 06:44:25 pm

Quote from: "mtnsammy"

I use it for the hour meter. I can better gage when to service the oil and fuel filter by the number of hours. Since I am off road mostly and running low speeds the miles are not as important as the hours of use. I like the tiny tac a lot.

Do you remember what sensor you ordered ??  6mm or 1/4" ?

Title: Tiny-Tach
Post by: rabbitman on February 04, 2008, 08:09:54 pm

I think it is the 6mm one, if it's slightly smaller than 1/4inch than I'm pretty sure it's 6mm

Title: Tiny-Tach
Post by: Vincent Waldon on February 04, 2008, 08:40:38 pm

Quote from: "rabbitman"

I think it is the 6mm one, if it's slightly smaller than 1/4inch than I'm pretty sure it's 6mm

Thanks... I'm thinking the sensor + a bit of circuitry = dynamic timing light adapter.

Title: Tiny-Tach
Post by: rabbitman on February 05, 2008, 12:04:30 am

yeah, I just looked at the website and they sell a diesel timing light, all ready to go it cost $469. Way out of my price range :cry:

Title: Tiny-Tach
Post by: mtnsammy on February 05, 2008, 08:47:49 pm

I used 6mm

Title: Tiny-Tach
Post by: greenbert on February 14, 2008, 03:18:35 pm

I just got my tiny tach today. works really well and takes like 10 mins to install. They sent me the new model that reads every 1/2 sec or so. The funny thing is, since I bought the car I'v put like 1500 miles on it and probably never took it past 3k rpm, so when I took it to 4200 it laid a massive smoke bomb that has been building up for a month lol. :shock:

Title: Tiny-Tach
Post by: jimfoo on February 14, 2008, 03:39:39 pm

Quote from: "Vincent Waldon"

Quote from: "rabbitman"

I think it is the 6mm one, if it's slightly smaller than 1/4inch than I'm pretty sure it's 6mm

Thanks... I'm thinking the sensor + a bit of circuitry = dynamic timing light adapter.

Awesome idea! I was just going to try to use the #3 TDI injector, but it's 180 off from TDC, so this would work much better.

Title: Tiny-Tach
Post by: greenbert on February 14, 2008, 05:26:45 pm

I bought the 6mm one. I dont think it matters witch injector line you use, if you might be wondering.

Title: Tiny-Tach
Post by: zukgod1 on February 14, 2008, 08:42:58 pm

I was planning on getting one if nothing else for the hour meter.

Then it would be nice to know what RPM I'm running down the freeway @ 80mph.

Title: Tiny-Tach
Post by: fatmobile on February 15, 2008, 10:10:42 pm

Can you take a picture of the transducer?
 I overtightened the one on my ferret timing light and ruined it.
 The tinytach ones are cheaper than a new ferret one but they won't send me a picture of it to see if I can use it for a replacement.

Title: Tiny-Tach
Post by: hillfolk'r on February 16, 2008, 12:06:49 pm

digital is a little hard to read(to me) in the heat of the moment
i got a lil 2 inch vdo diesel tach that runs off the w terminal
i  verified the accuracy with a diesel pulse adapter and a digital timing light/tach and adjusted it(the tach has an adjustment pot)

now i got a GTECH RR and it has a shift  light
now in the "heat of the moment" all i look for is the shiftlight on the gtech
tach is in the middle
(http://img136.imageshack.us/img136/8806/hpim0448wk8.jpg)
shift light is 4 little leds on upper right side of gtech
(http://img239.imageshack.us/img239/7793/hpim0717pg6.jpg)

Title: Tiny-Tach
Post by: rabbitman on February 16, 2008, 11:28:52 pm

(http://i249.photobucket.com/albums/gg218/rabbitdude82/Jan08048.jpg)

(http://i249.photobucket.com/albums/gg218/rabbitdude82/Jan08049.jpg)

Title: Tiny-Tach
Post by: fatmobile on February 18, 2008, 01:54:54 am

Thanks for the pics.
 Pretty close to the one on my ferret 765.
 The ferret has a ground clamp that clamps to the injector line.
 Did the tinytach have a ground wire on the injector line?

Title: Tiny-Tach
Post by: saurkraut on February 18, 2008, 05:00:12 am

Quote from: "rabbitman"

(http://i249.photobucket.com/albums/gg218/rabbitdude82/Jan08048.jpg)

(http://i249.photobucket.com/albums/gg218/rabbitdude82/Jan08049.jpg)

They sell these sepparatly for $35.

Any one have ideas about running a gasser tac with this sensor?

Title: Tiny-Tach
Post by: jimfoo on February 18, 2008, 06:54:21 am

Quote from: "fatmobile"

Thanks for the pics.
 Pretty close to the one on my ferret 765.
 The ferret has a ground clamp that clamps to the injector line.
 Did the tinytach have a ground wire on the injector line?

Do you know what kind of signal it outputs off hand? I'm guessing a very low current but higher voltage?

Title: Tiny-Tach
Post by: jimfoo on February 18, 2008, 06:56:21 am

Quote from: saurkraut

Quote from: "rabbitman"

Any one have ideas about running a gasser tac with this sensor?

I would guess there wouldn't be enough pressure for it to detect as it's close to a factor of 100 less, but you can find out for only $35. :lol:

Title: Tiny-Tach
Post by: Vincent Waldon on February 18, 2008, 09:35:44 am

It's a piezio transducer so the output will be an extremely brief pulse of several hundred (if not thousand) volts... albeit at a very very low current.

It will also only give one pulse every two revolutions so will read  1/4 what a gasser tach will read.

I have one on the way and will do some digging with my oscilloscope when it gets here... first priority will be to design a timing light adapter for it... but a frequency quaduplier should not be too hard ;-)

EDIT: it's 1/4 of what a gasser tach will read

Title: Tiny-Tach
Post by: rabbitman on February 18, 2008, 12:42:56 pm

I don't think it would work on a gasser since it senses the injection by feeling the pulse through the Injector line.

There is a ground wire but it's under a valve cover nut.

Title: Tiny-Tach
Post by: Vincent Waldon on February 18, 2008, 01:42:35 pm

yup... just did the math in my head... will edit the above posts for posterity !