• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

gs750 Points Plate. is it all there? with photos.

  • Thread starter Thread starter charlesandhisbeard
  • Start date Start date
C

charlesandhisbeard

Guest
Gday.1.jpg
im not very good with electrics but im trying to learn. i just picked up this beauty of a 78 gs750e for 250aud$ off a guy whos had it sitting in his shed for 12 years. mechanically it seems ok, but electrics have been modified unsucessfully: someone has tried and failed to wire in a electronic ignition box and given up half way and the bike wont turn over. i thought i should revert back to original wiring and points and to do that i need to buy a new points plate i think. there are a couple on ebay.
my question is, before i buy one, am i missing any part of my points system? I ask, because from the looks of the ones on ebay (see photo) they have little black plastic bumpers on them. i have 2 other gs's, an 850 and 1000, and on their central spinning shafts, there is one or two lobes, that rotate round and hit the plastic bumpers, thus opening the gaps in the points i assume.
on my 750, there is no bumps on the shaft, and looking at the points plates on ebay, the bumpers need something to be bumped by to open the point as the shaft turns. im worried that if i buy one and stick it in, nothings going to happen, the shaft will just spin freely as it does now. on the removable disc, there is a gap cut out, which spins and i assume the electric system (was meant to) detect the gap and sends the signal.
so, am i missing the plastic bumper hitting piece? or is there something im not grasping here? or am i missing another part of my original points system that may have been thrown out when the original owner tried to convert to electric?
i have included photos of, the bike, and me removing all the parts of the points system and showing them all to the camera.

or would it be easier to buy an aftermarket electric ignition kit and finish the previous owners job?

any help would be awesome!
 
photo 3...............
 

Attachments

  • 3.jpg
    3.jpg
    96.4 KB · Views: 0
pic 4...................
 

Attachments

  • 4.jpg
    4.jpg
    97.8 KB · Views: 0
the mechanism under the plate removed.
 

Attachments

  • 5.jpg
    5.jpg
    98.9 KB · Views: 0
this is a new (old) points plate off ebay. notice how the black bumpers need something rotating on the shaft to hit them and close and open them? well my shaft doesnt have anything..except for the metal disc that slides on, with a section cut out of it. im thinking this disc was for the electronic system, not the original. is that right?
 

Attachments

  • 6.jpg
    6.jpg
    40.9 KB · Views: 0
Yep, you are correct. Personally, I would try to get the electronic version going and do away with the points. Trying to put points back in is a step backward.

When you say "the bike won't turn over", do you mean that it won't crank or that it will crank, but not fire? Big difference in troubleshooting steps.

.
 
That electronic system looks like a newtronics system. There will be a black box connected to the wires about the size of a cigarette pack. Looks like 1 of the optical units is broken. The ebay points system you show is missing the advancer unit. Looking at your first post the ignition box is hanging next to left footpeg.
 
Last edited:
the kick lever will move all the cylinders and air hisses and sucks but no ignition, plugs are very old and the electronic system is not fully wired. thanks for the help!
 
we'll spotted yes it does say newtronics on the box. so does my points system have an advancer unit? or is it missing? yeah I was thinking of gettin a dyna s igni system, know I'd they are any good? it would just be about 150$ less to get the old points system in, but I guess it would perform better. thanks for your help!
 
what parts would I need to convert back to points ignition because it will probably be cheaper I'm thinking
 
You would need the full points plate and the matching advance unit. There were 2 types, Nippon denso for larger bikes and kokosan denki for 550 etc. Have a look at the advanced you have and look for ND stamped on it, if you get a Dyna S get a one for ND ignition. It is very easy to connect only 3 wires, black -white to coils and red ignition live.
 
thanks gs nut. i think my advance unit must be missing the single lobed metal sleeve that slips over the shaft and knocks the points bumpers as it rotates. that part i mean is obvious in this picture off google. i cant seem to find any advance units on ebay with this part included. ive figured my solenoid is faulty so ive ordered a new one, the starter turn over fine so im thinking 200$ for a dyna system is ok if it gets me some sparks to work with@ thanks aaaa.jpg
 
That advancer is not for points ignition, its the factory fitted electronic ignition for later bikes. If you are getting a dyna system you will need to get the correct type, ND or Kd. If you have a good look at your advancer it should have ND stamped in a circle on it. The dyna magnet part replaces the points cam part. I will find pictures and post them here.
 
Here is the same type advancer with Dyna magnet fitted, you can see the ND logo on the left below the spring. Also the Dyna paper work with the model numbers for ND or KD ignitions. Pity you are in OZ I have parts you need but postage would be un-economic
View attachment 48248
 
great! yeah i can find heaps of point plates, but i cant seem to find an original points cam for the bike anywhere. so Ill just go with a dyna s i think. i hear it makes a better spark and might have more performance too. thanks for the pics. i knew i was missing something!
 
Back
Top