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

Calculated should be fine as long as you have a first column of your table that's a ways below idle. Use the square that the cursor is sitting in when not running, and the one below it, to set cranking advance.

Aaron Silidker wrote:Calculated is likely out of the question also since this thing is all over the place RPM wise cranking.

I can understand RPM during cranking varying between like 300 and 800. I don't see it being all over the map, nor above idle. Are you seeing cranking RPM numbers that are higher than your idle?

If using trigger rise, the MicroSquirt fires the coil on specific teeth on the trigger wheel, determined by the delay teeth (and skip teeth if you have more than one ignition event per revolution). So the only phasing requirement when using trigger rise mode is that you have a real tooth located at ...

I gotcha, so I can have skip teeth of whatever, then a trigger offset of greater than 12 degrees if I want for starting? Not saying I would....but can the trigger offset be greater than a tooth plus a gap if necessary?

Also, I cannot use a timing light on this machine (could try, but it will be ...

Trigger rise will still apply the trigger offset (if you've set one), so the tooth doesn't have to be right at TDC.

If you use calculated, then cranking will use your timing table. If you don't have too much advance in the upper left corner, then this is probably OK as well.

MS triggers on signal ...

Actually, if you look further down the thread I referenced, you'll see that I did not agree that the 1N4148 was a real fix. The real fix for me was removing C30.

FWIW, 1N4148's are available from Radio Shack.

With dual tachs you can "run out" of dwell time at higher RPM, because dwell cannot start ...

Hi Louis,

This sounds like the standard loss of tach issue that many people have seen with uS. It's covered here: http://www.microsquirt.com/viewtopic.php?f=87&t=23063

If you're not already running the most recent MS-II code, you should probably try that. If you are already running the 2.890 code ...

OK. I can tell you, though, that you don't have to dig far into the Saturn coils to get to the leads.

Also, Accel makes an aftermarket Saturn coil that can be had from most auto parts stores for about $45. It's a pretty yellow :-)

If you happen to go back to the junk yard, though, the other thing ...

I'm driving two coils direct from the Microsquirt VB921's. My Microsquirt was actually one of the first dozen or so shipped when it was released.

I recently switched from MS-II 2.886 to MS2/Extra 2.1.0 beta (not MSnS). The bike was ridable and performant with MS-II, but at certain temperatures ...

I'm running an air-cooled inline 4 with a pair of GM Saturn DIS coils. I'm driving the coils directly from the Microsquirt VB921's. I bought some Panasonic supression caps from Digikey (a great place to deal with for electronic parts, including good prices on MPX4250's), but I've never gotten around ...