'81 GS550T ignition replica for a few euro !

[Adler]

not only new but also with better electronic parts

Will you really be doing the R/R's also? If you are then I will hold off on buying one...

[kokar]

@Adler
i will a.s.a.p

[Matchless]

not only new but also with better electronic parts

Using FETs I assume!

[kokar]

last picture before install....

[kokar]

Using FETs I assume!

there are 2 versions, one with SCR ( original ) and one with MOSFET

[Adler]

there are 2 versions, one with SCR ( original ) and one with MOSFET

Have you already done it???

[Matchless]

there are 2 versions, one with SCR ( original ) and one with MOSFET

I have seen quite a few variations of DIY SCR types that have been built and even one using Triacs, but have not seen a DIY FET type yet. I am very interested in seeing your FET one!

Was there a reason why you potted the ignitor?
The GS1000 type was never potted, just sprayed lightly with a water proofing compound and many are still working after 30 years. It allows for easy repair.
I am of the opinion that potting may allow some components to retain heat and may lead to earlier failure, but I may be wrong.

Keep up the good work!

[kokar]

Differences between CDI and TCI

CDI
CDI is fired by using a charged capacitor (typical voltages 300-600 v, typical capacity: 1-4 uf
Delay time is applied directly after the pickup pulse to fix the spark position
CDI spark is shorter and more powerful than TCI spark
CDI is more suitable to work at high rpm
CDI needs an inverter to increase voltage upto 300 or 400 volt if used with 12 volt battery

TCI
TCI is fired charging the coil itself before fire the spark. Time taken to charge the coil is called dwell time. The spark is made when the current across the coil stops, and the coil collapsates and fires the spark
Delay time is applied after the pickup pulse but dwell time has to be substract from the total time, to fix the spark position
TCI uses a simpler design and doesn't need capacitors

more info --> http://www.sportdevices.com/ignition/ignition.htm

[JEEPRUSTY]

So this thing is the ignition timing as well.
Beautiful pictorial btw thanks ever so much.

[mottyl]

That's pretty impressive.

Good work!

Chris

[Guest]

So this thing is the ignition timing as well.
Beautiful pictorial btw thanks ever so much.

Not quite Jeep, this is the one for the ignitions that have mechanical advance, no electronic advance in this one...

Mind you Kokar, are you up for another challenge? Hahaha

[kokar]

yes but this is tough one......

[Guest]

yes but this is tough one......

Oh you are! Cool! It is a tough one indeed...

[DCrippa]

Are you still making / selling any of these?

[kokar]

I am not selling anything but i gave all the info to reproduce the igniter