SymProjects Forum

General Category => General Discussions => Topic started by: grum gti on September 15, 2011, 02:25:44 pm

Title: laggy rev tacho?
Post by: grum gti on September 15, 2011, 02:25:44 pm

hi ive got an 8k rpm rev tacho, ive calibrated it as best as i can but ive noticed hen in LFS it seems a bit laggy,
when i change gear is a prime example,
is this a calibration problem or just a laggy tacho?
ive herd u can tweak the type r tacho's with the pot on the back, ive opend this up and there was 3 individual pots so i decided to leave well alone lol

id appriciate some help if its possible, many thanks
ive attached a vid along with the post apologises for the crap vid, was hard to drive and record and do gears at same time lol

 just click the below link

http://www.youtube.com/watch?v=gEA-ecfBlxg

Title: Re: laggy rev tacho?
Post by: Cristiano on September 15, 2011, 05:14:20 pm

Hi.
it's the tacho a bit lazy.

I would try to mode those potentiometers.
It doesn't mater if the tacho won't be calibrated anymore, because you can compensate in the software.

Cheers
Cristiano

Title: Re: laggy rev tacho?
Post by: grum gti on September 15, 2011, 08:18:58 pm

thanks for that christano, ive tweaked it and got it a bit more responsive,

One thing i have noticed thought, upon calibration i can be calibrateing 4k rpm and get it perfect, i move on to 4200 rpm and get that spot on, i then try 4k again and that is off again, it seems to happen everytime i change another rpm range?

also, once ive fuly calibrated it i can export the data and play LFS, i have a session on LFS go back and clock say 4k revs again, and its not where i left it lol, the numbers in the Simdash remain the same however the needle postion on the tacho is diffrent everytime i press it by a couple of rpm's

this is probablly the tacho im assuming, would there be any way around this mayb?

Title: Re: laggy rev tacho?
Post by: Cristiano on September 16, 2011, 05:59:31 pm

Quote from: grum gti on September 15, 2011, 08:18:58 pm

thanks for that christano, ive tweaked it and got it a bit more responsive,

One thing i have noticed thought, upon calibration i can be calibrateing 4k rpm and get it perfect, i move on to 4200 rpm and get that spot on, i then try 4k again and that is off again, it seems to happen everytime i change another rpm range?

also, once ive fuly calibrated it i can export the data and play LFS, i have a session on LFS go back and clock say 4k revs again, and its not where i left it lol, the numbers in the Simdash remain the same however the needle postion on the tacho is diffrent everytime i press it by a couple of rpm's

this is probablly the tacho im assuming, would there be any way around this mayb?

I have exactly the same rev counter. I use it as a CPU meter (for more details: http://hackaday.com/2009/08/07/cpu-tachometer (http://hackaday.com/2009/08/07/cpu-tachometer)  )

I am sorry to say it is very unreliable. if it is displaying 4000 rpm, for example, you touch it and it moves to 4200 or 3800.
or say it is suppose to go up to 6000, it stops at 5700 then you slap it and it reaches 6.000. I must say it was extremely cheap on Ebay.

Title: Re: laggy rev tacho?
Post by: grum gti on September 16, 2011, 06:13:14 pm

yeah that sounds like what it does lol yeah they are very cheap, think it was about £20 lol im thinking about going for a set of mondeao mk2 clocks as that sems very simple to setup, and im having no joy with this alfa romeo speedo lol,

i want somthing thats reasonably responsive for a resonable price, im tempted by a type r tacho as they seem to be responsive,

how does the mondeao or alfa dash compare to say a type r? are they as responsive or quick?

thanks for the reply and i shall check out that link it seems interesting.

Title: Re: laggy rev tacho?
Post by: Cristiano on September 16, 2011, 06:15:49 pm

Quote from: grum gti on September 16, 2011, 06:13:14 pm

yeah that sounds like what it does lol yeah they are very cheap, think it was about £20 lol im thinking about going for a set of mondeao mk2 clocks as that sems very simple to setup, and im having no joy with this alfa romeo speedo lol,

i want somthing thats reasonably responsive for a resonable price, im tempted by a type r tacho as they seem to be responsive,

how does the mondeao or alfa dash compare to say a type r? are they as responsive or quick?

thanks for the reply and i shall check out that link it seems interesting.

have you seen this post:

http://www.symprojects.com/forum/index.php?topic=310.0

about how to make the type-r rev counter more responsive?

Title: Re: laggy rev tacho?
Post by: grum gti on September 16, 2011, 06:25:22 pm

yes ive read up on that post its very usefull to know, do you have any knowlage  about how to connect an alfa 156 speedo?

i know youve done the modeao dash in this thread
http://www.symprojects.com/forum/index.php?topic=45.0

how did u find it? was its accurate? or would you personally go for a type r? im wanting a full dash but if they arnt very accurate then i dunno lol

Title: Re: laggy rev tacho?
Post by: Cristiano on September 17, 2011, 12:22:12 am

Quote from: grum gti on September 16, 2011, 06:25:22 pm

yes ive read up on that post its very usefull to know, do you have any knowlage  about how to connect an alfa 156 speedo?

i know youve done the modeao dash in this thread
http://www.symprojects.com/forum/index.php?topic=45.0

how did u find it? was its accurate? or would you personally go for a type r? im wanting a full dash but if they arnt very accurate then i dunno lol

Personally, I would buy a type-r again, in partucular now that I know of the potentiometer trick.

Also the Mondeo dashboard worked well, I can complain. I found it on Ebay, for £25-£25

Cheers
Cristiano