'81 GS550T ignition replica for a few euro !

[kokar]

Sorry for hi-jacking this brilliant thread. Somewhere here it was mentioned that it's suitable för GS450 as well. I don't dare building one myself since +/- is my weakest side in life. I did, though, find a cheap GS550 81 ignitor on the web. Will this fit my GS450 81?

Cheers
/Viggo, Umeĺ Sweden

the basic difference is the plug connector and the color of the cable
you must do some homework or take the advice of a professional
you can also give me a good photo of your igniter and the connector and i try
to find out your configuration

my cable-color configuration is the following



i found on the Internet the following wiring diagram



O/W = Orange / White
B/Y = Blck / Yellow
W = White
B/W = Black / White
Br = Brown


so the only difference from mine is the color cable of the pick-up coil




.

[Robertoisrad]

I'm super excited about finding this thread! Every replacement ignitor I've found for my bike is used/untested/expensive... Kokar your work is awesome!

A couple of questions though. Is the parts list and the schematic still the same as in post #30? There's been a few posts here and there about people swapping in different or better components. If the original still works I'm fine with it!

Second any advice on where to buy this stuff in the US? I've repaired a few electronics and I've usually ordered from digikey or mouser but I can't find most of the items in the parts list....I'm searching for the part number and not getting any hits. I pretty much don't know what I'm doing though so if someone could help out with that I'd be really grateful.

Third, any advice on where/how to print out the board in the US?

Thank you! I'm hoping I can build one before the snow melts so I can finally ride my old bike again!

[kokar]

the parts in post 30 is absolute right
I run this since 9/2011

[posplayr]

the basic difference is the plug connector and the color of the cable
you must do some homework or take the advice of a professional
you can also give me a good photo of your igniter and the connector and i try
to find out your configuration

my cable-color configuration is the following



.

Hi Kokar,

Good work on this ignition work.

I have been looking at designing a computerized electronic ignition, that is as universal as possible. So I was wondering if you knew if the two ignitor inputs for this 550 ignition were bipolar signal relative to ground on each leg.

The VR pickups seem to be grounded and independent of the each other and use the engine block as a return. The later model igniter pickups for say my GS1100ED is floated from the engine but rather tied to the small pedestal inside of the igniter. The wave form looks something like this.

Have you measured this on the independent pickups?

TIA,
Jim

[kokar]

No, i did not mesured the wave form on pickups









.

[Robertoisrad]

Kokar (or anyone else...) do you still have the .lay file for the pcb? The link you originally posted to has expired...

[cletus@live.se]

thanks for the answer. turned out they didn't ship to where I live. will continue looking for a 450 replacement.

Cheers

[aznpride75]

i just read this entire amazing thread and ive gotta say you a genius! But from what ive collected a set up for an 85 gs550 with electronic ignition already on it is harder to do??

[kokar]

I can not answer that ....

[mfkty]

I was wondering if anybody still had the updated parts list and the board mask file, or any of the files. It seem like the hosting site deleted the files. Also this was incredible work. Thanks in advance
Christian

[kokar]

have a look here
http://www.moto.gr/forums/showthread.php?t=130182 ( photo & video )

there is not update for the part list....
part list
-------------
D1,D11,D21 = 1N4007
Q11,Q12,Q13,Q21,Q22,Q23 = 2SC1959
Q01 = 2SK163
Q14,Q24 = 2SD977 or 2SD1976
if you find the 2SD1976 Darlington then you have not need to put the zenner Z11 & Z21
Z11 Z21 = ZY350v /1,3W
Z01 = ZD4,7/1,3W
R11, R21 = 1K
R12, R22 = 3,9K
R13, R14, R15, R16, R23, R24, R25, R26 = 4,7K
R18,R28 = 300 ohm
R19,R29 = 470 ohm
R17, R27 = 300 ohm 2W
C01 = 100nF/63v
C02 = 100μF / 63V/105°
C11, C21 = 22nF/63V
C12, C22, C13, C23 = 10nF/63V
C14, C24 = 150nF/400V

i am still looking in my lab to find where the schematic and the PCB are
when i found them i will upload a.s.a.p
thanks for the comment

[kokar]

you can download the PCB file Suzuki GS550T.LAY from the following link

https://www.sendspace.com/file/f1x6f0

you can download a demo from abacom

http://www.abacom-online.de/uk/html/sprint-layout.html

.

[tom203]

You do nice (and amazing) work! thanks for your efforts

[60ratrod]

Kokar, this is an amazing thread! I have a question though. I found my signal generator on my 81 650g is going out, leaving me to run on cylinders 2 & 3. Do you think it's possible to repair my signal generator? The ohm specs are from 250-360 ohms, and it meters out at 421 ohms. I got a used one on ebay, I'm just waiting for it to get here

[kokar]

for your problem the suspect is one of the following
a) connectors
b) ignitor
c) ignition coils
d) spark plug
e) spark plug cap
f) pickup coils