Bike won't start - help!

[royhall]

Be careful with the DSS pattern coils, the ohms are not the same as originals. Sorry cant remember what the readings were, but it was off by enough for me to return them. Got it written down somewhere, plus Ash will know as he talked me through it.

[JustcallmeMrT]

Be careful with the DSS pattern coils, the ohms are not the same as originals. Sorry cant remember what the readings were, but it was off by enough for me to return them. Got it written down somewhere, plus Ash will know as he talked me through it.

So where did you end up going for a 5 ohm coil and what was cost like?

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[royhall]

It was one of my coils on the 350F that had gone faulty. After the bad start with the DSS coils that were the wrong ohms, I decided on a Boyer Micro Digital electronic ignition kit with matched mini coils. Never did sort out standard coils. I am sure I have the details somewhere, there may even be a thread on here as Ash helped me out with it. Will have a look.

[royhall]

This is the thread where the DSS pattern coils were discussed. These were 350F items, but pretty sure they are the same as the 550 ones (check it out though). http://www.sohc.co.uk/index.php/topic,9337.0.html

[ginger_jim]

The plot thickens!  Roy - I was always under the impression that if you run an electronic ignition and a decent regulator, so youve got a good charge, running a 3ohm coil pack was the way to go.  Points system best to run 5 ohm coil.

I'm quite happy to be corrected however   Loads of threads kicking around about people having panic attacks regarding which coils to use though so its a common issue.

[Seabeowner]

Just a reminder of a topic that I,m sure has been covered a number of times.
As my 500 has become increasingly difficult to start over the last few months, I thought to get on with something useful yesterday I would investigate. It is fitted with Piranha ignition (remember them) that I originally bought for a Guzzi and then transferred to a Z650.
The spark looked OK, but when measuring the voltage at the coils it was nearly a volt down. A quick root around the shed revealed an old relay bought for some extra lights fitted to something years ago. Wiring this to switch power direct to the ignition system has made all the difference. Starts on the button.