trigger wheel thoughts
Turbo Mini Forums

just bend them straight!

the sensor wont mind

Okay! Damn you get so sennnssssitive!

YES!!

pmsl

Is it really that hard to mount a trigger on the pulley ? lol

IMO mounting one on the flywheel is more work.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

I quite fancy doing an RTS using the minispared injection flywheel. Shame the trigger pattern doesn't suit megajolt.

If something is worth doing, it's worth doing half of.

EDIT: Scratch that thought, there's no material other than the ring gear in that area and the back plate is in the way too...

my other thought was to put the 'teeth' on the engine side of the flywheel and use the same space/hole used by the factory injection sensor.



Should be easy enough to do with 36 accurately drilled holes and some studs of some kind.

Edited by apbellamy on 13th Mar, 2011.

Shh sprocket you are making my wallet groan

If something is worth doing, it's worth doing half of.

the MS kit isnt that expensive...

If you do use Megasquirt, use the MPi flywheel as there is not enough information recieved from the SPi flywheel to run wasted spark ignition.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

I already have a trigger wheel on the pulley, bolted to it's engine side, I'm just looking at alternatives.

My trigger wheel(s) are also on the engine side of the pulley. Gets rid of any belt problems but still not ideal as they are on the "wrong" side of the damper rubber so there will be some small amount of timing scatter. But the same applies to mounting it on the radiator side (or milling the slots direct into the outer part of the pulley) unless you buy the expensive versions which have the trigger wheel attached to the inner hub of the pulley.

But if you want to use either an SPI or MPI flywheel and standard sensor associated with those engines (ie, you have the hole in the transfer case) the MS2 Extra code accepts either.

As Joe says, an MS2 is quite cheap, especially if you DIY it and build it for ignition only.

Also, it doesn't need an EDIS module, Megasquirt can fire the coilpack directly.

Plus it has quite a few extra features over MJ even if it is only used for ignition.

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

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

I said it before and it may have gone un noticed. To use wasted spark ignition with Megasquirt and a standard injection flywheel, you need the MPi trigger pattern, since the SPi pattern does not provide enough information on its own.

I was just looking at this. To me the pictures of the SPi flywheel look like the missing teeth are 180 degrees apart, in which case the MS would not work with it.

Stick with the MPi, just in case.

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."

Edited by Sprocket on 15th Mar, 2011.

Can we also deduce from the flywheel teeth arrangement that the SPi fires the injector at a precise point on each stroke?

Apologies for going off-topic.

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."

Probibly. The SPi system was never really that complicated, and the processor was not very powerful. I recon the fuel table was something like an 8x8. The clever bit was the adaptive learning. For a 60hp engine it made improvements over the carb, namely the controlled warmup enrichments and over run fuel cut. It served a purpose, and it can still be made to work well on 100hp engines. Whether its perfect is a whole other topic, as you know

In my case, I won't be running megasquirt and I will be running a preverto flywheel, so the spi/mpi debate is not relevant to me.

I'm just looking at other places to put the CPS as I'm trying to hide away as much of the wiring/electronics as possible.

If I could have a Joe's ring on my flywheel and the censor in at 9 o'clock where the metro engine mount goes on then I think it would fit my spec's quite nicely. It should keep all the engine wiring loom above the flywheel housing in one or two tidy loom sections.

Just pulled the trigger ring out of an MPi flywheel, reckon if I add 3 of the missing poles and refit the ring timed for MJ I could use it. Will the Rover sensor work with Ford EDIS.

Edited by viz139 on 18th Apr, 2011.