SOHC.co.uk Forums > The Black Bomber Board
Timing problems on the 450 Bomber
K2-K6:
I can see your point Roy in regard to in situ spec.
Usually (although that's making a assumption :) ) the voltage control is looking at too high a voltage that may risk damage to the new boxes. The lower threshold seems to be one of the advantage with current state electronics,, in that they work really well even at lower than ideal voltage because of component efficiency.
Interesting to hear what the supplier may contribute to this.
If the earth to coils is switching though, thats all it has to do to get coil spark from that side of things.
mo goldie:
Well to start the battery is almost new and fully charged and I have fitted a solid state rectifier, don't know if fitting that has made any difference as the bike has never been run with that on yet.i will be going down workshop in a bit and will get some pictures Roy.... they did get back to me this morning but that was for question I asked about timing and just to say have I got the pick ups the right way round :-[ but not got back about not having a spark... anyway I will get back with the pictures and also have a look at earth points again but I keep going over what I have done but all seems to be done right..
royhall:
Starting to point to a faulty system if everything is already checking out.
Sent from my Pixel 7 Pro using Tapatalk
mo goldie:
just been down and had anther look still No wiser,
Here are the pictures you can see by one pic there is the lights all on and they do go off when you turn the engine over, I have tried what you said too about kicking it over but still the same... also the battery is an AGM battery and very strong one :(
can I ask a silly maybe question but if I put 12V right to the coils will that make them fire the spark plugs ?
K2-K6:
"can I ask a silly maybe question but if I put 12V right to the coils will that make them fire the spark plugs ? "
You can fire a coil by, establishing a + supply to it first, this enables it to collect power but only when you have the earth connected too.
All conventional coils are like this......then disconnecting the earth (points opening in old money ) will cause the stored energy to exit via the HT lead to give you spark.
Don't back connect anything to coils with them in system to avoid risk. Just bare coils with constant + then touch the earth to fill, remove to spark.
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