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

found the problem with firing. we've got spark all day long, but not firing right. i figured out what happened:
the crank wheel used to be 18 teeth -0, and the TDC tooth was extra long. we ground that off, and now i realize that microsquirt wants to see the tooth AFTER the missing one as TDC. so i ...

we were planning on going to VIR, but with CNC vendor issues and this engine program, it wasnt going to happen

We are going to Detroit though, so I will be sure to stop by and see him. Another big thanks to Northwestern

coil is on order, will be picked up on thursday from the stealership

Grab a double-e, promise him lots of beer and girls, show him the circuit diagram and put him to work.

haha, funny you should mention it. we have one. he's in his 9th year, but graduating this year i'm pretty sure. he doesn't show up much because he's got a very abrasive personality, but at least ...

If you don't have a second vr input, microsquirt won't know which crankwheel revolution is compression and which is intake/exhaust overlap. I would recommend setting skip teeth to 18 and fire the coil every revolution. If that messes the tach, call it a 2 cylinder.
thanks. makes sense now.

I ...

hey, i'm the bozo that's not here enough. (we're using one screen name for our whole team).

i got the crank pickup worked out. somebody messed with my original settings. 18 teeth, 1 hole, 36 skip teeth (1 cyl, 4 cycle). now it reads like it should, ~525rpm cranking. i have no spark currently ...

Thanks for the help!!! Tonight ill check out the tach masking and work with some of the variables you suggested. I origionally had the cranking trigger to calculated so ill switch that back as well. Im not sure about the wires so ill check them as well. To be honest i just took this project over ...

I put 2.883j in the controller and still have the same problem. do i need to update megatune as well? when I boot up megatune it asks for which project, the most current option available is "MS2-MicroSquirt BG 2.881" is this correct or is there a later version that i should have and be selecting?

Just to clarify a couple things so the problem is clear, the problem we have is getting the correct signal into the microsquirt and/or getting microsquirt to process the signal correctly. The tac provided in megatune is reading in the 1000-2000 rpm range in cranking when it should be reading around ...

Here is the msq

firmwear - 2.881

The engine is a Suzuki LTR 450 (2006) for our Formula SAE project. It is an 18-1 flywheel, variable inductance crank position sensor. It used to have a taller tooth flywheel that we cut the tall tooth off tonight. We no longer get cranking rpm to be in the range of 40k, but now ...