Author Topic: What type of ignition "plate" is this (Read 6325 times)

KirkBurner · « **on:** July 30, 2012, 12:08:23 PM »

I have some ignition problems .. no sparks I think this might be the culprit.

any one know what it is.. and how to test it?

thanks in advance

Teatimetim · « **Reply #1 on:** July 30, 2012, 12:40:42 PM »

I've not seen that before, but I would say its an electronic ignition system that uses magnets to trip.

dave500 · « **Reply #2 on:** July 30, 2012, 12:57:06 PM »

optical or hall effect pickup going by the slot cut out of the disc,it looks home made?the leads from it should run into some kind of electronic box not directly to the coils,leads from the box should run to the coils.

scottly · « **Reply #3 on:** July 30, 2012, 04:44:54 PM »

Definitely optical. The black things the disc runs between are called "photon coupled interrupter modules". There is an LED (possibly infrared) on one side, and a photo transistor on the other side. When the light shines through the window in the disc, the transistor turns on.

cgswss · « **Reply #4 on:** July 30, 2012, 08:59:27 PM »

I have never seen this before. I would say it is very much optical. I'm guessing its a good candidate for a "burned out bulb". (I know its not a "bulb")

scottly · « **Reply #5 on:** July 30, 2012, 09:16:01 PM »

Like Dave said, there must be some sort of amplifier box; the modules I've found will only handle 50-60 mA. A couple of parts that appear to be the same physically are NTE 3100 and NTE 3101. There is a PDF on NTE's website. Find the box, and make sure it is getting power.

KirkBurner · « **Reply #6 on:** July 30, 2012, 10:41:13 PM »

So.. basically.. get something to replace this one...

My coils were worn, I have managed to borrow some functioning ones.
but I have ordered up new coils.. the ones that fit the later models the cb900 with replaceable wires.

what kind of plate should I order to get this working with the cb900 coils?

scottly · « **Reply #7 on:** July 30, 2012, 10:59:39 PM »

Kirk, first I should say welcome to the forum! While I can't identify your ignition, I do believe I've heard of an optically triggered system designed to fit an SOHC. I would not be so quick to discount it before investigating deeper into it.
Do you know the ohm rating on the CB900 coils?

dave500 · « **Reply #8 on:** July 30, 2012, 11:04:29 PM »

find the module first and see if it has a brand name or something,have you only just gotten this bike?have you had it running before?
this looks like your sensor?
http://www.jaycar.com.au/productView.asp?ID=ZD1901
i use this hall effect in my car with bosch distributor.
http://www.jaycar.com.au/productView.asp?ID=ZD1900&form=CAT2&SUBCATID=977#1

KirkBurner · « **Reply #9 on:** July 31, 2012, 12:03:18 AM »

Well I have had the bike for almost two years...

but I personally havent ridden it.. cause I had to do a tour to afghaistan which took last year summer away.. and since we live in norway there isnt much summer
and I did a teardown of the bike to get it repainted... and replace the starter motor..

now it doesnt start (it has started before but was hard getting to start)... so.. there you have it all

dave500 · « **Reply #10 on:** July 31, 2012, 12:07:06 AM »

if the battery is low even trying to kick start it probably wont work with an electronic ignition,they stop operating around 8 volts or thereabouts,make sure the battery is charged and good first.

Terry in Australia · « **Reply #11 on:** July 31, 2012, 01:14:56 AM »

Hey I like that ignition mate, wanna sell it? Or if you'd like to trade, I've got a shiney new points plate assembly from David Silver spares in a box out in my garage? I've got a bit of a collection of electronic ignitions for CB750's, I should mount them on a wall or something! Cheers, Terry.

KirkBurner · « **Reply #12 on:** July 31, 2012, 09:32:53 AM »

Brand new battery fully charged...

I might take you up on that Terry.. but I want to know if this one will work or not.. no need to change up something that workds

Terry in Australia · « **Reply #13 on:** July 31, 2012, 01:26:54 PM »

No worries mate, let us all know if you get it to work. Cheers, Terry.

dave500 · « **Reply #14 on:** July 31, 2012, 01:52:37 PM »

track all the connectors that run into the ignition,disconnect and clean them,youve checked the fuse of course and its contact,then check all the other connectors on the bike even in the head light bucket.

KirkBurner · « **Reply #15 on:** August 02, 2012, 06:27:16 AM »

I pulled out the discs and I am currently trying to install a basic point plate...

there was no powersource no brandname no nothing....

as for the point ignition plate... the points do not "open" and are not effected by the turning of the engine.

the 1,4 point is unable to get ther right opening at all

anyone got any tips?

KirkBurner · « **Reply #16 on:** August 02, 2012, 08:09:12 AM »

That piece there was there actually... maybe there is something missing to it..

KirkBurner · « **Reply #17 on:** August 02, 2012, 09:53:27 AM »

I went into the garage and took this one out.. this is the advancer right?

does it look complete or do I need to find this part on the interwebs..??

Brantley · « **Reply #18 on:** August 02, 2012, 10:19:50 AM »

The points cam is missing.

KirkBurner · « **Reply #19 on:** August 02, 2012, 10:46:16 AM »

Is that part that is missing something that I would be able to aquire cause this part on the sites I know of are discontinued or they arent listed at all

I can only find complete advancers on ebay..

lucky · « **Reply #20 on:** August 02, 2012, 10:52:14 AM »

People just throw away parts without thinking.
OR they do not mark them or tag them and later on no one knows what it is.

I have seen thousands and thousands of dollars worth of parts thrown away
because people do not tag the parts.

KirkBurner · « **Reply #21 on:** August 02, 2012, 10:58:04 AM »

Well..

let me refrase this then...

how and what would I be the easiest way to get AN ignition up and running.
Im getting more an more ready to flesh out the cash needed and fast.. the norwegian biking season is lets say soon over...

scottly · « **Reply #22 on:** August 02, 2012, 11:32:58 AM »

Here is a picture of the point cam you are missing. Have you made any contacts with members in your part of the world yet?

KirkBurner · « **Reply #23 on:** August 02, 2012, 12:26:40 PM »

Thanks Scottly...

Well I have contact with afew in my part of the world.. but I dont have that many skilled people that I know..

but know I atleast know what the part looks like...

dave500 · « **Reply #24 on:** August 02, 2012, 01:00:54 PM »

that aftermarket disc part replaces the points cam but still runs its advance system,the cam is removed like a boyer unit,it should look like this complete.

the paint lines show where to align the marks up so it works properly.

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Author Topic: What type of ignition "plate" is this (Read 6325 times)