Evening All,
So looking for some help with a 750 Sport fitted with electronic ignition.
Bike is a recent full restoration from a well known restoration shop, all new and shiny and less than 1500 km on the clock.
Electronic ignition is BC0500006 ELECTRONIC IGNITION 750 R/C Sachse Electronik, Germany.
No ignition problems so far.
I took the bike out on Sunday (well I tried).
About 1 mile to Petrol Station - engine dies as I pulled in - fuelled but could not restart.
Got bike home, no spark on either cylinder.
Looked at battery which had been on a trickle charger, low electrolyte.
Swapped for battery off another bike - healthy spark - bike fired and ran.
Went out, half a mile - bike stopped and refused to restart.
No spark on either cylinder.
Let bike go cold, first kick and it fired and ran. 3 or 4 minutes stationery then stopped.
No spark on either cylinder, would not restart.
So:
Battery now topped up and fully charged (and I had used a battery off another bike too - so battery OK methinks).
I know that electronics can be very sensitive to iffy batteries but whilst I know the battery I first went out with had low electrolyte levels, the battery I swapped it over to was fully topped up, healthy and had taken me out for a run the day before on a 900ss.
Connections to key switch look sound.
Earths sound.
Fuse box clean and polished, took fuses out and cleaned and replaced.
Changed plugs for new ones - no difference.
I think it is therefore something heat related in the electronic ignition but I am not familiar with what tests to do.
Any suggestions?
(I mean to get it fixed, not stuff like put the points back on etc thanks lol ).
Regards
Stuart
Request for assistance - 750S with electronic ignition
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- Diana
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- BevHevSteve
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Re: Request for assistance - 750S with electronic ignition
does the battery drain from a full charge to low or dead sitting for a few/several days or does the thing stay fully charged when sitting? (this checks for a drain somewhere).
Steve Allen (925)798-BEVL[2385] Ride'm, Don't Hide'm
Ducati/Euro Spares -> https://Store.BevelHeaven.com
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- Diana
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Re: Request for assistance - 750S with electronic ignition
Hi Steve,
Not sure as I keep it plugged in to a Optimate trickle charger pretty much all the time.
Do you think there is a possibility of an open circuit somewhere leaking to earth?
Regards
Stuart
Not sure as I keep it plugged in to a Optimate trickle charger pretty much all the time.
Do you think there is a possibility of an open circuit somewhere leaking to earth?
Regards
Stuart
- BevHevSteve
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Re: Request for assistance - 750S with electronic ignition
unplug the optimate and check if there is
Steve Allen (925)798-BEVL[2385] Ride'm, Don't Hide'm
Ducati/Euro Spares -> https://Store.BevelHeaven.com
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- 750 SS Greenframe - the holy grail
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Re: Request for assistance - 750S with electronic ignition
Check your plug caps,they MUST be 5k ohm resistor caps or you can get oscillation in the ignition system.
I had the same problem.,very simple mistake to make.
Ran my bike up on dyno and 4 (on my bike) was best curve,it ran well on 5 but 4 gave another 3hp in mid range and 5hp up top,all other curves were useless.
I had the same problem.,very simple mistake to make.
Ran my bike up on dyno and 4 (on my bike) was best curve,it ran well on 5 but 4 gave another 3hp in mid range and 5hp up top,all other curves were useless.
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- Cucciolo - the Lil Pup
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Re: Request for assistance - 750S with electronic ignition
The Sachse ignition is sensitive to the quality of the electricity given to it. I had spoke with Volker before he died because I had fried the new ignition on my 750. He stated that the old voltage regulators allow voltage spikes and highly recommended installing a modern voltage regulator. He said he would redesign the curcuits to prevent it happening on the new products but I don't know if he ever got that done before being killed. Great ignition. I've installed them on a number of bevels.
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- 750 SS Greenframe - the holy grail
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Re: Request for assistance - 750S with electronic ignition
Can you recommend a brand regulator?
I'm still running the original Ducati Elletronica one, together with a new Sachse ignition on my Mille....
I'm still running the original Ducati Elletronica one, together with a new Sachse ignition on my Mille....
- BevHevSteve
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Re: Request for assistance - 750S with electronic ignition
I keep a couple on the shelf, either will work.
https://store.bevelheaven.com/index.php ... =regulator
https://store.bevelheaven.com/index.php ... =regulator
Steve Allen (925)798-BEVL[2385] Ride'm, Don't Hide'm
Ducati/Euro Spares -> https://Store.BevelHeaven.com
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- 750 SS Greenframe - the holy grail
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- Joined: Fri Aug 13, 2004 2:12 am
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Re: Request for assistance - 750S with electronic ignition
This is on my Mille, so I guess that's allright with the new Sachse ignition...