MicroSquirt.com read only forum (Jan.15,2018)

In the megamanual section on the LSx coils, it is stated that the coils self-limit dwell to about 8 mS. Has anyone tested and verified this? It seems line a somewhat complicated task. Correct me if I'm wrong, but to do this, the coil would have to "know" the current engine RPM, predict the timing of ...

Thanks, Paul.
I appreciate the insight
I will need to add a wheel to get to 36-1. I'll have a closer look.

Hi, folks.
I will be using microsquirt in dual spark mode on a Yamaha XV920. Single-tooth wheel on the cam, and a 8-1 wheel on the crank. I understand that my cam synch pulse must occur during the crank wheel missing tooth window.
I would like to make my 8-1 wheel as follows:
http ...

Hi, folks. I apologize. I KNOW I read this somewhere, but cannot find it now. Here's the question:
If running dual spark mode, with single-tooth cam wheel... what setups require the cam pulse to occur at a specific time (TDC) and which setups allow the cam pulse to occur "anytime" in the crankshaft ...

As for the topic of idle stability, can you point me to specific threads that discuss this?

I can recall seeing one, where the user went to beta hi-resolution code to fix the problem, but am not finding it now.

Not sure how much power/boost you are planning. I am not going wild with boost ...

Sure, you can email me at tydriver@hotmail.com
My cell is 469-231-1669, but mostly could only talk on weekends

The following assumes you know your engine stock rated HP/Torque.

I would start here:
http://www.turbofast.com.au/tfcalc.html

Put in your engine bore/stroke/#cyl, ambient air =25C
start ...

Thanks! I think I'm (slowly) getting my act together. One problem was I had not downloaded 2.8x code, so was not seeing the dual-spark menu options.

I think my path is fairly well defined. :
MicroSquirt, Dual Spark Mode "Dual Tach Input" , "Odd Angle" =0.
VR sensors connected similarly to this ...

Correct, Jean. The factory ignition on this engine is one coil per cyl. The uS-fired ignition must be this way also.

Thanks for the reply. I understand that without camshaft position sensor, only wasted spark is possible. However, with current draw budget so tight, I hate to double the coil current draw.

So, I am seeking input on how to solve this. Would a GPIO board give me the additional VR sensor input I need ...

Of course, as soon as I posted I saw the Moto Guzzi thread a few down from mine. Seems to answer a few of my questions.

Seems like if I'm OK with batch fire fuel and wasted spark ignition... I don't need the uS-Sequencer product (due to having 2 VR tach inputs 75 degrees apart?). But, a cam sensor ...