wheel speed sensors

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Cpur
Posts: 51
Joined: Wed Dec 06, 2017 1:55 pm
ECU Model: S100 Pro

wheel speed sensors

Post by Cpur »

Hi guys, how are you all?

Summary;
3rd jan the escort was on the rollers, it made 350bhp at 20psi,I am quite happy on pump fuel. I know we can get more but for now no need to advance and go in the limits of timing. Also i would probably go the more boost way instead of more advance if in future i would need more bhp.
Had a small problem with clutch sticking and with the gearbox sensor so i had to take all apart, was really busy and just now we got back to put everything all together.

Well
fitted new rear wheel speed sensors, should read up to 5khz.

The car is on the jacks and without wheels . i took a data log of what they are reading. The reading seems to be realy unstable ,it fluctuates all the way. I am logging it at 100hz. Am i too concerned for nothing or should these be perfect. Please have a look at the log. this is a log started on 1st, went up to 6th no clutch, then revved it up and down again.
Is this a good reading? From what i can see DTA reads the timing between each hole . Does it average for example 3 hole or maybe more when the speed goes up?

I am not concerned about how nice the graph on logging is, i am concerned on how will it affect the car.

Thanks and regards
Attachments
trying wheel speed rear.Dat
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Cpur
Posts: 51
Joined: Wed Dec 06, 2017 1:55 pm
ECU Model: S100 Pro

Re: wheel speed sensors

Post by Cpur »

I also checked the diagnostic screen.

On high speed the reading between left and right vary.
on 14000 counts on of them reads around 30 counts less.
diff has lsd so they should be the same.
car is jacked up

Is this considered normal?

Regards
katana
Posts: 455
Joined: Sun Jan 27, 2013 6:08 pm
ECU Model: S60 Pro
Firmware Version: 29

Re: wheel speed sensors

Post by katana »

That's about 0.2% inaccurate - subject to the data on the sensor, i'd say its fairly accurate - sort of equates to 10.5 feet in 1 mile!
stevieturbo
Posts: 3577
Joined: Tue Aug 02, 2011 12:08 pm
ECU Model: No ECU
Location: Norn Iron

Re: wheel speed sensors

Post by stevieturbo »

They maybe look a little noisy...but what sensor, trigger, teeth, etc etc ??

How do they look when logged at the normal 10Hz ?
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