Q on TCI ignition module

[pegscraper]

I need an electronics expert. As I look at the wiring diagrams and the ignition modules for the 1st gens, it looks like there is a separate pickup coil for each cylinder. And as I look at those things on the 2nd gens, I see only two wires for the pickup coil. It looks like there is only one pickup coil. So how does the ignition module know which spark plug to fire?

[Freebird]

I can't say that I know for sure how it works. You are correct in that there only seems to be one pickup coil. I would just assume that it works via the timing of the engine.

[Squeeze]

Hi Lynn,

 

well i'm not that electronics Expert that i wish to be, but i can explain something.

 

From '83 to '89, the 1Gen's used a two Pickup Assembly. After that the changed it to a single Pickup, similiar to the Vmaxxes. I really do not know which one was the first with the new Setup.

 

The TCI 'knows' which Coil to fire by just simply counting the Revelations and give the Signal to the next Coil in fireing Order. Because the Engine is not a BigBang Motor, there is no need to gather the Information where the Pistons are inbetween one Revelation.

 

If you think about testing a 1Gen TCI on your Bike, you need to get one after '90 with only one Pickup. Or a similar Vmax TCI. I believe those Units will work on your Bike, but until someone did a Test, it is need to know.

[pegscraper]

The TCI 'knows' which Coil to fire by just simply counting the Revelations and give the Signal to the next Coil in fireing Order.

 

I suppose it could be done like that. But what if it ever got out of sync? Or what if you change the TCI module? The thing has to be able to orient itself to start with somehow.

 

Actually, a D3K TCI module for a V Max is just exactly what I have up my sleeve here. The spark advance curves are much better, and the rev limits are higher. (With the V Max cams in my bike, it feels like I only get about halfway through the powerband and the rev limiter kicks in, and with the V Max valve springs the engine can certainly handle higher rpms.) I have a wiring diagram for a V Max, but I don't know what year it is. It shows four pickup coils though, so apparently it is an older one. So you're telling me that the post '90 models use the same pickup that the 2nd gen models do? That might simplify things a little.

[Squeeze]

The TCI 'knows' which Coil to fire by just simply counting the Revelations and give the Signal to the next Coil in fireing Order.

 

I suppose it could be done like that. But what if it ever got out of sync? Or what if you change the TCI module? The thing has to be able to orient itself to start with somehow.

 

...

 

The Pickup seems to be around upper dead Center of the frist Cylinder. How they manage to synchronize the Ignition with the Intake/Fire Revelation?? I don't know, never thought about it. I changed the TCI various times and did not get a Nonstart afterwards....

 

Actually, a D3K TCI module for a V Max is just exactly what I have up my sleeve here. The spark advance curves are much better, and the rev limits are higher. (With the V Max cams in my bike, it feels like I only get about halfway through the powerband and the rev limiter kicks in, and with the V Max valve springs the engine can certainly handle higher rpms.) I have a wiring diagram for a V Max, but I don't know what year it is. It shows four pickup coils though, so apparently it is an older one. So you're telling me that the post '90 models use the same pickup that the 2nd gen models do? That might simplify things a little.

 

Yes, i think this will work.

 

I do not have an english Version of a newer Shop Manual, but i think you could handle a german Version. I would send you a .pdf if you like to have it. Or just the Electrics Section and the Wireing Diagram ?

[pegscraper]

Just the wiring diagram I think would be enough. I'll send you my email in a PM. Thanks.

[DonB]

Here's a pictorial of the TCI pinouts which will help to explain how it works. Each output ignition coil is activated by a corresponding input coil.

 

I have built a bench tester for TCI's 1983 to 1993 if anyone is interested. I don't have to take them apart for testing as I just hook them up to my tester.

 

Here's a couple of pics to help.

 

db

[86er]

Ανθρωποι είναι ακριβώς

τρόπος πάρα πολύ έξυπνος!

 

:rotf::rotf:

 

[Squeeze]

Ανθρωποι είναι ακριβώς

τρόπος πάρα πολύ έξυπνος!

 

:rotf::rotf:

 

 

jIH chIS 'e' jIH pagh chIS

 

:confused24::confused24:

[gibvel]

Συμφωνω μαζι σας 86er

[Thom]

it's all greek to me , i think ? :confused24::detective:

[Squeeze]

Gentleman .... just to remind you .. this is a technical Discussion :rotf::rotf::no-no-no::no-no-no:

 

 

 

 

and NO, not ALL is Greek :rotf::rotf:

[86er]

jIH chIS 'e' jIH pagh chIS

 

:confused24::confused24:

 

Ist die eine Sprache, Squeeze? Wenn so, das ein?

 

[Squeeze]

Ist die eine Sprache, Squeeze? Wenn so, das ein?

 

 

Yes, it is a spoken Language ... not ancient, not so common but nevertheless a Language. No, i do not speak it, i have had to use a Translator Tool on the Internet. Known from the late 1960', it has established itself in the mid or late '70ies and made it's Way over World.

 

It has its Origin in the US, but People all over the World had their Share and helped to spread it around the World.

[Squeeze]

Here's a pictorial of the TCI pinouts which will help to explain how it works. Each output ignition coil is activated by a corresponding input coil.

 

I have built a bench tester for TCI's 1983 to 1993 if anyone is interested. I don't have to take them apart for testing as I just hook them up to my tester.

 

Here's a couple of pics to help.

 

db

 

Don,

 

i didn't give it too much Tought, but the Question is, how does the TCI know, on which Revelation it has to fire the Ignition Coil.

 

With a two Coil Setup, that's might not be a Problem, but with only one Coil, there is a 50/50 Change to fire at the right Pass of the Flywheel. Probably, the TCI simply fires at each passing as long as the Input Signal is under 500 RpM or something similiar ...

[Denden]

Don,

 

i didn't give it too much Tought, but the Question is, how does the TCI know, on which Revelation it has to fire the Ignition Coil.

 

With a two Coil Setup, that's might not be a Problem, but with only one Coil, there is a 50/50 Change to fire at the right Pass of the Flywheel. Probably, the TCI simply fires at each passing as long as the Input Signal is under 500 RpM or something similiar ...

Just a thought, I don't know for sure, but maybe it fires 2 plugs at once, one at the correct time,( at near tdc compresion ) and one that is on the exxhaust stroke.(?) Some other motors do that. Called, I think, waste spark system.

[Denden]

Don,

 

i didn't give it too much Tought, but the Question is, how does the TCI know, on which Revelation it has to fire the Ignition Coil.

 

With a two Coil Setup, that's might not be a Problem, but with only one Coil, there is a 50/50 Change to fire at the right Pass of the Flywheel. Probably, the TCI simply fires at each passing as long as the Input Signal is under 500 RpM or something similiar ...

OR, you could have a single pickup, but with 4 "nodes" on the timing wheel, with one node longer than the others. I've seen that too.

[Squeeze]

OR, you could have a single pickup, but with 4 "nodes" on the timing wheel, with one node longer than the others. I've seen that too.

 

There are two Coils in the earlier Versions(up to '90) and only one Coil in the Flywheel on the later. The earlier Flywheels have two long Protrusions on the Wheel, which can be seen. The later Units have nothing to see.

 

 

Just a thought, I don't know for sure, but maybe it fires 2 plugs at once, one at the correct time,( at near tdc compresion ) and one that is on the exxhaust stroke.(?) Some other motors do that. Called, I think, waste spark system.

 

I don't think so. I have had a Induction activated (Sensor Wire turned around the Ignition Wire between Coil and Plug) Tach on my Max and when setted on x1 it did show the real RPM. Setted on multiply with 0.5, the half Rpm where shown.

[DonB]

attached is a partial copy of the XVZ12TK wiring diagram which clearly shows 4 input coils just to the upper right hand side of the AC generator.

 

Coil 1 is connected to black & orange wires

Coil 2 is connected to orange & silver wires

Coil 3 is connected to green/White & Orange wires

Coil 4 is connected to Orange & Red/White wires

 

As the generator spins past these coils in turn it then produces a trigger voltage which is sent in turn to the ignition coils 1,2,3 & 4

 

Anyway, that's the way I read the schematics

 

db

[86er]

Yes, it is a spoken Language ... not ancient, not so common but nevertheless a Language. No, i do not speak it, i have had to use a Translator Tool on the Internet. Known from the late 1960', it has established itself in the mid or late '70ies and made it's Way over World.

 

It has its Origin in the US, but People all over the World had their Share and helped to spread it around the World.

 

So, what is the language called, mein freund?

 

[Squeeze]

So, what is the language called, mein freund?

 

 

This is a popular Quote saying "I know that i know nothing" from Sokrates, the famous ancient Greek.

 

 

 

The Langauge is ....

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Klingon

 

 

 

:rotf::rotf: