Lost sync on 18 tooth with one wide teeth

[aboelfadl]

We are using a MS3X board with KTM 450 EXC Engine and stock VR sensor and crank wheel which contains 18 tooth , and one of those tooth is wider than the others.



I tried setting the ignition setting as 18-1 and 19-1 wheel but I always get a RPM sync loss signal such as this image:



And the RPM reading is about 9000 RPM while crancking .

Should I remove the wide tooth and configure as 18-1 or there is another way to avoid removing the teeth ?
And how could I know the reason of the RPM sync ?
And is it a must to wire other sensors , injectors and coils before testing the RPM signal ?
A Last question the wires between the sensor and the MS wiring harness are just crimped Can this introduce noise signal ??

Please find I attached the msq file:

Thanks in advance

[grom_e30]

megasquirt does not play nice with the long tooth setup, the teeth do look equally spaced so i think the 18-1 should work, how manu cylinders is the engine?

[aboelfadl]

The engine is one cylinder

[Matt Cramer]

One wide tooth can be counted as a missing tooth - it's the "three short, one log" bike decoder that's tough. Can you post a copy of a tooth log?

[aboelfadl]

I made this tooth log a while ago, But the ignition settings was set to basic trigger , would this make any difference to the tooth logger

[Matt Cramer]

Sorry, accidentally had something block the image. That trigger shape won't work - can you file off the long tooth and use it as a missing tooth?

[aboelfadl]

Ok i am willing to remove the wide teeth but why the logs don't seem smooth? Is noise affecting the log shapes?

[grom_e30]

cant see the logs or log picks

[aboelfadl]

This link contain both screenshots of teeth logger and composite logger:

http://imgur.com/IxUfm5A,ppPudDU

[Matt Cramer]

The screen shot is too zoomed out. Please attach an actual composite log.

[aboelfadl]

I finally cut the long teeth, But things aren't going very well, I get a cranking speed of 400 RPM which is reasonable and the teeth logger seems fine.
The problem persists in the TDC-(Teeth #1) angle below are the pictures of the wheel before and after cutting it.



The wheel is rotating in the anti-clockwise direction and the angle between TDC and teeth#1 is about 15 degrees.
I tried setting teeth #1 angle to 345(360-15) but the engine isn't starting yet.

[grom_e30]

when the wheel is on tdc cylinder1 where is the sensor?

[aboelfadl]

The sensor is pointing as the arrow named TDC is pointing

[grom_e30]

i would start at a tooth1 about 320ish then use a strobe to dial it in, do you get decent sync when cranking.

[aboelfadl]

Yes , I get a decent sync as the sync loss counter doesn't increase and a cranking rpm of around 400 which should be reliable.

[grom_e30]

have you checked the ignition timing with a strobe light?