Scottish888 wrote:Is that photo of your stator when it is at TDC? or is that the 37 deg BTDC position?
Nah,that photo is just of where the engine stopped
. Apologies, my bad: I missed your, " ... so I can see where the timing mark is
at TDC". But no matter .. I can confirm that the dots were originally lined up at +/- 38 BTDC, and I hope you can see the similarity of position with your own.
Scottish888 wrote:The ign was retarded a bit so now timed exactly to 37 BTDC <snip>
I believe your bike is a 250? Well, here's something which you might like to consider.
This is from the Italian version of the owner's handbook for the post-1972 bikes fitted with the Ducati Elettrotechnica ignition. Italian first, English translation afterwards (also see the attached scan).
"Ruatore l'albero motore in senso orario fino ad ottenere un valore di anticipio prima del PMS di 54° per le 250; 42° per le 350; e di 36° per le 450."
"Rotate the crankshaft clockwise in order to obtain an advance value BTDC of 54° for the 250s; 42° for the 350s; and 36° for the 450s".Now, I have not seen these differing values given anywhere else, not even in Massimo Clarke who is my usual 'Go-to' reference. Normally, it's always '36-38, no mention of engine size'. But, but, but ... There it is, in black and white, in a booklet published by the manufacturer: different engine size = different static advance. And hey! The contact breaker ignition is set up differently according to engine size. So why not the electronic?
So, even tho' I'm not convinced that your problem is caused by the static timing being out, it might be worth setting it to the value above?
Scottish888 wrote:Changed the plug gap back to 0.8mm
That is correct for a Ducati Elettrotechnica ignition.
Scottish888 wrote:Looks like a transducer, will get check on ebay etc.
The transducer wouldn't be my first suspect - as previously, I'd rather go for the pick-up. (The weak point in the transducer is the thyristor/SCR, and these tend to have a 'Go/No Go' mode of failure).
However, it's true that the transducer would be the easier bit to obtain on a 'swap to see' basis. I know I have a spare, if no-one in the UK can help. Best to ask for one from a 860 - tend to be easier to find