Anything not specifically related to the Speeduino hardware. Eg sensors, bluetooth, displays etc
By boris.h
#51668
Hi all!
Still asking about this "renault" 60-2 flywheel, with theorically 60 teeth, one missing and one long...

Set my trigger settings to 60 teeth / 2 missing, and 276° trigger angle (checked with strobe)

If I do a tooth logger I have 58 "teeth", as 56 same ones, one following (the biggest) and another one smaller.
In that configuration, TS is able to synch and set a pw, rpm raise.... But the engine does not start.

I tried to set 58 teeth per curiosity so 58 / 2 missing, and TS is also able to sync.... Normal?

Thank you so much!
By boris.h
#51674
Hi!
I checked different settings:

1) VR+/- inverted, falling edge detected: this is the picture with 1big tooth only

2) VR-/+ inverted, falling edge detected, this is the picture with 2 big teeth

Same signal quality, same teeth number, but something different: the high signal teeth.

What do you think about these pictures? Which one should fit the best for that megane flywheel?

thanks!
Attachments
Captufdgfgre.PNG
Captufdgfgre.PNG (39.44 KiB) Viewed 4807 times
Captugtcdstrstr falling inverted ure.PNG
Captugtcdstrstr falling inverted ure.PNG (52.08 KiB) Viewed 4807 times
User avatar
By PSIG
#51675
boris.h wrote: Wed Jul 07, 2021 4:32 pm 1) VR+/- inverted, falling edge detected: this is the picture with 1big tooth only

2) VR-/+ inverted, falling edge detected, this is the picture with 2 big teeth
Something wrong in the description. You have either VR +/- "correct", or "inverted". There is only one correct polarity on the VR+ wire (+ signal as a tooth approaches, and a - signal as a tooth departs).

Usually, you want the 1 big tooth, with correct polarity. Wire your polarity correctly, and set your Rising/Falling edge to get that 1 big tooth.
  • Disable the fuel pump.
  • Set 60-2 crank speed.
  • Check your sync (filter low or off),
  • ignition LEDs flashing with RPM 1-2-3-4,
  • spark (spark plugs out and grounded) sparking 1-3-4-2, and
  • correct timing (with timing light on HV wire #1).
If no joy, post a tooth log, a run (cranking) log, and your tune (3 files). Also post what did or did not happen. Don't forget Trigger Angle can be -360 to +360.
By boris.h
#51678
thank you so much PSIG
the problem is that I don't know what I am supposed to get on TS as a good "trigger signal"
I set trigger angle as falling in detection and so I have smg more "easy to understand for me". If we suppoose a high signal is counted as 2 teeth, so now I have 60 teseth as a total in the case of 2 big ones. I checked with a strobe light tonight, TDC is seen with 280° set ATDC on TS, and with 0° advance while cranking.

So the big question is for me: what kind of signal should we get with that kind of flywheel?

because every configuration is able to be sync by TS, but I am thinking the sync is going away very quickly on some configurations

now the best one I am trusting in (because no reference) is this one, because of 60 teeth as a total if we count the big ones as 2 teeth
Attachments
finaaal.PNG
finaaal.PNG (23.51 KiB) Viewed 4791 times
#51682
This is almost what you want.

That single big tooth is right but it has another tooth showing slightly after it.

This indicates that your settings/polarity are wrong.
Attachments
Captugtcdstrstr falling inverted ure.PNG
Captugtcdstrstr falling inverted ure.PNG (52.08 KiB) Viewed 4778 times
By boris.h
#51686
This morning I had a more structured approach, I tried both polarities and both detecting ways (falling and rising)
The only way to get only one big tooth is with falling triggering and this is the same as the image above. Will try to start today. I wish the small tooth (which is, anyway bigger than the other) will be not Considered...
By boris.h
#51691
Here are the different logs:

4 different situations below, which one is the most convenient for you guys? I am thinking about the one where there is only one big tooth...
Attachments
falling VRVR1.PNG
falling VRVR1.PNG (168.73 KiB) Viewed 4703 times
rising VRVR1.PNG
rising VRVR1.PNG (120.12 KiB) Viewed 4703 times
rising VR1VR.PNG
rising VR1VR.PNG (43.97 KiB) Viewed 4703 times
falling VR1VR.PNG
falling VR1VR.PNG (42.51 KiB) Viewed 4703 times

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