Shift cut setting for Drenth dg500

Give input on tuning as well as any tips and tricks you may have. Also feel free to share base mapping files for various engine types.
bmwe36m3
Posts: 34
Joined: Thu Jan 28, 2016 5:51 am
ECU Model: S100 Pro

Shift cut setting for Drenth dg500

Post by bmwe36m3 »

Can anyone provide the correct settings to set up shift-cut with a DTAs100 and a Drenth dg500. I have an old school throttle cable not fly by wire throttle so I assume throttle blip on the down shift is not possible.
Regards,
R. Hansen
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Shift cut setting for Drenth dg500

Post by Alex DTA »

What are you using to start and end the cut?

On the latest firmware it is possible to trigger a throttle blip using the gear pot. It's very engine dependent though. You would need some sort of solenoid connected via a relay to blip the throttle.
bmwe36m3
Posts: 34
Joined: Thu Jan 28, 2016 5:51 am
ECU Model: S100 Pro

Re: Shift cut setting for Drenth dg500

Post by bmwe36m3 »

Not quite sure what you mean but I ordered the Drenth DMS shifter (25-03-0057) with integrated electronics, the analogue output signal of the gear lever electronics can be used to configure the ignition cut.
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Shift cut setting for Drenth dg500

Post by Alex DTA »

Looks like that has a load cell integrated in to it.
Is there also a gear potentiometer on the gear box?
bmwe36m3
Posts: 34
Joined: Thu Jan 28, 2016 5:51 am
ECU Model: S100 Pro

Re: Shift cut setting for Drenth dg500

Post by bmwe36m3 »

Alex,
My understanding is as follows: The gearbox has a rotary sensor signal and is used to show the engaged gear on the Drenth Display Unit / .... and the Drenth Switchbox is equipped with two potentiometers, the upshift and downshift threshold ...
Does this make any sense to you? I am totally confused. It sounds like I need to buy the Drenth display unit and switchbox. What do you think?
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Shift cut setting for Drenth dg500

Post by Alex DTA »

Is this the correct unit?
https://www.drenth-gearboxes.com/wp-con ... ressed.pdf

If so, it has a built in gear potentiometer. You don't need any other sensor.
Connect that to the ECU and set up the shift cut. You can then do closed loop flat shifting.
bmwe36m3
Posts: 34
Joined: Thu Jan 28, 2016 5:51 am
ECU Model: S100 Pro

Re: Shift cut setting for Drenth dg500

Post by bmwe36m3 »

Alex,
That's great news, can you provide the detailed settings in the DTA s100 software?
Also, do I connect the shifter to the #14 pin in the s100 wiring?
Regards,
Ralph
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Shift cut setting for Drenth dg500

Post by Alex DTA »

Signal from the potentiometer goes to analogue 3, pin 3.

Attached is a good starting point.
Attachments
Shift Cut New Closed Loop.png
bmwe36m3
Posts: 34
Joined: Thu Jan 28, 2016 5:51 am
ECU Model: S100 Pro

Re: Shift cut setting for Drenth dg500

Post by bmwe36m3 »

Thanks Alex,
So that's all, just connect the signal to pin#3 and install these settings and I am good. Do you suggest dyno time to fine tune the settings. Any other suggestion before I get started.
Regards,
Ralph
Alex DTA
Posts: 1622
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Shift cut setting for Drenth dg500

Post by Alex DTA »

Those are a starting point. You must tune them from there.
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