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

If so, you should be able to use that to verify your trigger offset and advanced offset. On my bike, the timing light didn't always fire reliably during cranking. I was able to get a good signal out of it by wrapping a piece of primary wire half-a-dozen times around the plug lead and using that ...

Thank you for clearing that up.

The physical set up on the bike is that the vertical cylinder is at tdc and then 90 degrees later the horizontal cylinder is at tdc ( both compression stroke). 450 degrees after the vertical cylinder is at tdc the vr sensor is in the gap of two missing teeth: 15 ...

Skip teeth, as I understand it, is what tooth past the missing tooth is to be considered the tach pulse. By changing skip teeth you can effectively change the mechanical part of your trigger offset as if you had moved the pickup(s) or rotated the trigger wheel relative to the crank.

I thought ...

Ok, by now I am completely confused as to what settings do what in Megatune. Could somebody breifly explain what the following settings do any how the interact with each other:

trigger offset, skip teeth, advance for output 2.

If you could please explain them with an oddfire engine in mind it ...

Paul,

I am going to have to disagree with you on the cylinder timing. I definitely know that cylinder 2 Vertical is at tdc 90 degrees before cylinder 1. A very easy test shows this. All I had to do was bring the horizontal cylinder to tdc by lining up the mark on the flywheel with the pointer on ...

Paul,

My mechanical set up is as follows:

Cylinder 1= horizontal cylinder

TDC compression stroke occurs on cylinder one ( the sensor is in the gap) and then 15 crank degrees later the first tooth after the gap is lined up with the sensor. 630 ( 720-90) crank degrees later cylinder two is at tdc ...

Paul,

I think that your stock setup should work just fine with microsquirt. I am doing the same thing that you are except that I do not have a dual spark engine. Either I am doing things the wrong way or the single vr sensor on cam timing is sufficient enough for uS. If you bring in the vr sensor ...

I looked at your msq, and it is set up for dual spark, so uS defintely should be firing the two channels 105 degrees apart. I am curious, though, why you have 105 degrees of offset on a 90 degree engine.

Maybe I am misunderstanding the explanation of the trigger offset but here is how I ...

I checked the spark outputs with a test light.( the scope is at work and I don't have access to it until Tuesday) What I found is that I have spark on output 1 but not on output 2. I disconnected the caps that I had on the outputs just in case they were interfering and that didn't help.The setup ...

I am sorry that I cannot help with your problem directly but I think that I can point you in the direction of some body who can. Contact Matt Kramer from DIY autotune and see what he has to say. He helped me fix my problem and I have to say that the customer service was outstanding. In my case we ...