trigger wheel pictures needed
Turbo Mini Forums

i made my comment about the larger diameter wheel being supairer as it has more distance betwen section for a given angle just like a cam disc when setting cam timeing bigger is better as you can see the error

the ecu calculates the time between sections to see when the engine is at so if you make the time grater then the error is less same as if you add sections to the wheel to gain resalution

id think any place that is not the rubber mounted damper is good enough as no matter witch end you go to the crank torsional stress is the relation ship end to end so it cant be escaped id have though?

ideally you want the trigger wheel in the center of torsional vibration cast as part of the crank!

some times good enough is just that there are lots of guys running with it milled into the rubber mounted bit with out hassle

The talked about, milled standard pulley. and as you can see, its on the damped section (complete with splitting rubber!) so you can see if it becomes split any more how it might be allowed to flex significatly more meaning timing will shift

David.

90% use the milled damper without known issues. It's like a lot of things: If you don't measure the torsional vibration, then you don't know what variation in spark timing is happening.

Running a sensor on an un-damped wheel is better.

Regard flywheel vs free end. As TT said, the ecu measure time between teeth, so the radius is inconsequential. Just testing :)

However, flywheel would be more accurate for No. 4 and free end more accurate for No. 1, so take your pick.

Mine:

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

The front end of the crank is the point of greatest amplitude.

Schrödinger's cat - so which one am I ???

It all depends on what you are trying to achieve. If you intent to get absolutely every horspower/torque possible out of the engine, then it's something that needs serious thought.

For the majority though, just stick it on the outside of the damper and get it 'good enough'. Personally mine is mounted on the engine side of the pulley bolted to the centre.