Vehicle speed bmw e30 options?

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Vehicle speed bmw e30 options?

Postby Insomnia- » Sun Jan 15, 2023 7:10 pm

Hey there,

I am setting up my dash 2 in the moment. I use it in my e30 Rallyecar.

I wanted to ask; what options do I have to get a vehicle speed signal on the D2?

Can I use the vehicle speed signal from the original instrument cluster? Can I use the existing abs sensor as a signal? Do I need to set up a race tech abs rpm sensor on the wheels?

Thanks in advance

Elias

racetec
Site Admin
Posts: 323
Joined: Thu Oct 27, 2005 12:02 pm

Re: Vehicle speed bmw e30 options?

Postby racetec » Mon Jan 16, 2023 10:00 am

Hello,

You will need an RPM conditioner for the RPM signal and a VRS Signal Conditioner if you wish to use the ABS sensor.

https://www.race-technology.com/gb/raci ... onditioner

https://www.race-technology.com/gb/raci ... onditioner

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Re: Vehicle speed bmw e30 options?

Postby Insomnia- » Mon Jan 16, 2023 1:46 pm

I already managed to display the engine speed rpm on the dash.
Are both options you gave me for the vehicle speed?
By using the vrs conditioner will the abs still work ? Do I connect it to an analogue channel or the seperate wheelspeed wire?

Thanks in advance

racetec
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Posts: 323
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Re: Vehicle speed bmw e30 options?

Postby racetec » Mon Jan 16, 2023 2:06 pm

The VRS Signal Conditioner is only required for the vehicle speed signal. If you tee into the sensor wires the ABS will still work. The VRS Signal Conditioner output connects to the wheel speed input of the DASH2.

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Re: Vehicle speed bmw e30 options?

Postby Insomnia- » Mon Jan 16, 2023 6:13 pm

Thank you very much. Just ordered the vrs module.

I’ll get back to this thread when I have troubles installing it

Greg Amy
Posts: 45
Joined: Sun Dec 11, 2005 2:59 pm

Re: Vehicle speed bmw e30 options?

Postby Greg Amy » Mon Jan 16, 2023 9:24 pm

Given that rally cars will rarely have driven wheels at road speed (tire slip), and sometimes not even un-driven wheels, why not just use GPS?
Greg Amy
FastTech Limited, http://www.fasttechlimited.com/
Data Acquisition, Driver Consultation

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Re: Vehicle speed bmw e30 options?

Postby Insomnia- » Tue Jan 17, 2023 6:51 pm

Given that rally cars will rarely have driven wheels at road speed (tire slip), and sometimes not even un-driven wheels, why not just use GPS?
In Germany, Rallye Cars need to be fully road legal. There is a special kind of registration we can use.
To get this legality we need a certain kind of „tüv“ therefore the cluster needs to have a display of vehicle speed that is NOT based on gps…

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Re: Vehicle speed bmw e30 options?

Postby Insomnia- » Mon Jan 23, 2023 6:43 pm

The VRS Signal Conditioner is only required for the vehicle speed signal. If you tee into the sensor wires the ABS will still work. The VRS Signal Conditioner output connects to the wheel speed input of the DASH2.
Already got my module today, gonna be wiring it up tomorrow. Is there anything that I need to adjust on dash2? Or is everything already set up before shipping it? What divide cable do i use? There is one said to be divided 2 and another one

racetec
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Posts: 323
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Re: Vehicle speed bmw e30 options?

Postby racetec » Tue Jan 24, 2023 9:55 am

You need to use the yellow wire output. This is configured to divide by 8, so will give 6 pulses per rev of your 48 tooth ABS ring. In the DASH2 config software you use this 6 pulse per rev information along with your tyre size to calibrate the speedometer.

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Re: Vehicle speed bmw e30 options?

Postby Insomnia- » Fri Mar 17, 2023 4:47 pm

Finally managed to wire everything up and set the settings to 6revs and my tire size.
Made a test drive up and down the street (aprox 15kmh) but got no speed shown. Everything stayed at 0kmh on the dash.
Any idea on what to try?
Could it be that the abs sensor needs a higher speed to send a signal of food enough quality?

Cheers
Elias

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Re: Vehicle speed bmw e30 options?

Postby Insomnia- » Sat Mar 18, 2023 2:20 pm

Today I noticed that the odometer went up to 000001
So the dash measured some kind of movement obviously. I think I’ll need to take it for a bigger spin on the street

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Re: Vehicle speed bmw e30 options?

Postby Insomnia- » Thu Mar 23, 2023 6:16 pm

Help? Please?
Racetec?

racetec
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Posts: 323
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Re: Vehicle speed bmw e30 options?

Postby racetec » Fri Mar 24, 2023 9:38 am

If you send your dash configuration file to support@race-technology.com we will check it.

Insomnia-
Posts: 13
Joined: Sat Nov 05, 2022 4:28 pm

Re: Vehicle speed bmw e30 options?

Postby Insomnia- » Sun Mar 26, 2023 4:39 pm

If you send your dash configuration file to support@race-technology.com we will check it.
Thanks, all done. Sent you the config


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