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Author: Subject:  Data loggers
Memberandrewmurphy
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posted on December 26th, 2013 at 11:34 AM
Data loggers


Hi all,

What data logger do you use? What do you log? Is it worth logging AFR on each cylinder?
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posted on December 27th, 2013 at 06:36 AM



andrew, i run an R.P.M. data logger, they give you the basics (rpm, oil pressure , 4 egts ,feul pressure , ) you can fit a lot more to it at purchase or add extras later on. All the wiring is done all you do is terminate the ends,you need a laptop also
if you are looking for bells and wistles buy racepack, they are the best and you pay for it . Mine cost me $1400 delivered and it took approx 2weeks
It comes down to how much imfomation do you want or need ?????????
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posted on December 27th, 2013 at 08:43 AM



I run a motec CDL3 on a toyota :tu:

logs all inputs into the motec ecu + track/lap times, speed, GPS odometer etc.




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posted on December 27th, 2013 at 09:12 AM



Clutch slip, rear suspension movement and longitudinal accelerometer, which a lot of newer units have built in.
Do you want to log mainly for monitoring engine health and safety or for developing the car?
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posted on December 27th, 2013 at 01:40 PM



Quote:
Originally posted by SuperOwen
Clutch slip, rear suspension movement and longitudinal accelerometer, which a lot of newer units have built in.
Do you want to log mainly for monitoring engine health and safety or for developing the car?


Engine health mostly.... So was thinking basic but am wondering if each cylinder O2 is worth logging....

Out of curiosity how does a clutch slip sensor work?
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posted on December 27th, 2013 at 01:43 PM



Quote:
Originally posted by stoker
andrew, i run an R.P.M. data logger, they give you the basics (rpm, oil pressure , 4 egts ,feul pressure , ) you can fit a lot more to it at purchase or add extras later on. All the wiring is done all you do is terminate the ends,you need a laptop also
if you are looking for bells and wistles buy racepack, they are the best and you pay for it . Mine cost me $1400 delivered and it took approx 2weeks
It comes down to how much imfomation do you want or need ?????????


Thanks, I'll look into it.
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posted on December 27th, 2013 at 02:05 PM



Clutch slip derived from engine rpm and input shaft rpm. Some loggers will derive input shaft rpm from driveshaft rpm I think, otherwise a sensor needed on each.
One O2 and 4 egt's is the more common method for individual cylinder.
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posted on December 28th, 2013 at 12:27 PM



Quote:
Originally posted by SuperOwen
Clutch slip derived from engine rpm and input shaft rpm. Some loggers will derive input shaft rpm from driveshaft rpm I think, otherwise a sensor needed on each.
One O2 and 4 egt's is the more common method for individual cylinder.


Thanks for that, I assume that the idea is to have the EGT the same and then target the AFR?
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posted on December 29th, 2013 at 06:50 PM



Yeah, both at the same time really. An N/A engine might not see a whole heap of benefit from 4 EGT's compared to blown setups which are more prone to dropping cylinders and burning valves etc.
Crankcase pressure is a good one to log as well to keep an eye on engine health.
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posted on January 11th, 2014 at 09:21 PM



Andrew, my Racepak (V300) logs a lot of stuff, (engine and suspension) I have 4 EGT's and single AFR but will be going to 4 AFR's. I had a look at some Pro Stock cars at the last event and they all use an AFR in each pipe and the EGT's were not even installed.
The good thing about the V300 is that it comes with a clutch slip sensor out of the box. Really easy to hook up as most of the sensors are on the data bus as Dave S said and are plug and play setting wise. (virtually no setup)
The Racepak sportsman is a cheaper option, but you don't get the capacity for as many sensors.
I heard that one you go to an AFR sensor in each pipe you see some amazing stuff and would never go back to a single.
The only issue with Racepak (other than their parent company MSD filing for bankruptcy) is the price. Buy once, cry once.
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posted on January 13th, 2014 at 03:34 PM



I've just bought a race technology dash and dl1 logger. Pretty good value for money, English stuff. Don't know if you are injected or not, but can run a serial cable from the ecu to the dash/logger. Best of all I paid 1100 NZD for the dash and logger one year old. https://www.race-technology.com/content.php?pcat=2&cat=30592.  800 quid new plus a bit of freight new. Also does gps and has accelerometer stuff.... Looks good for the dosh to me, but I'm no expert.
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posted on September 12th, 2014 at 05:16 AM



doesnt matter which one you get,it needs to be easy to understand and use.
biggest problem i see ,everyone gets them.and nobody knows how to ready them properly.
i reakon out 8 out of 10 guys dont use them after the first couple of weeks .




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posted on September 12th, 2014 at 07:25 AM



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