12 replies to this topic

[madbob]

Hi

Just thought I would post a bit of useful information.

I recently bought a 2000 sherco 250 as Spares/Repair with no spark that I found had a missing ignition pick up coil. The Pick-up coil is unavailable from main dealers, all the other stator repair places I could find and even Motoplat could not repair the stator and recommended an upgrade to the later Leonelli system. After many hours on the web doing research I found that a vespa PX200E uses the same coil and a Ducati/energia stator. I ordered the coil last week, fitted it and the bike started straight away with no problems.
I also have a sherco 290 2001 that has the same coil and have ordered a few spares just in case £9.94 plus postage is a bargain rather than having the stator repaired.

Hope this helps someone
If you need details of where to order the coil or how to change it just ask


Rob

[chewy]

Nice one

[copemech]

I am not sure these have the same timing advance curve, yet should be good enough I suspect.

Can you tell any difference in Mfg part numbers? How much was the stator?

[madbob]

The Stator Plate would have been £181 plus postage for the later Leonelli type.

The part numbers are completely different as the pickup coil is a pattern part.

I have been riding the bike all day today and it ran fine.

I set the ignition to the standard 2.5mm BTDC and it started easily every time and ran fine

Rob

[HAM2]

My thinking is:
If the lad is bright enough to research a specific component like this, then he's probably bright enough to suss out whether it's working as it should.
Great find Rob,thanks for sharing your findings
Wayne

[GII]

I'm baffled,

How could it affect the advance curve?

The pick up coil is just a fixed coil, the magnet whizzes past, it sends an electrical pulse to the ECU, the ECU fires the HT coil and hence the plug.

The ECU also calculates the engine rpm from the frequency of the pulses from the stator coils and alters the timing to suit by varying the retardation (it can't actually advance it, it retards it more at low rpm and less at high rpm)

I think it's a great bit of work, Ignition system failures are a major pain in the life of trials riders - ask most Beta owners from the last 15 years, yet the components used are most likely standard or directly replaceable with those fitted to truly mass produced bikes, the hard bit is finding out which.

Well done.

[copemech]

Oh I think I misunderstood, you got just the pick-up coil and fixed it using a pattern part!

Initially I was thinking you got the entire stator plate and an ignition coil/ cdi unit.

I think GII's thinking is basically correct, best I can fathom as just how these things actually function, yet the Leonellis are different in that they are using two trigger coils at 20-26 degree separation it seems. God knows the logic pattern by comparison.

Maybe Steve at Motoplat has would like to know where to get them if he cannot source them, let him know of and get his thoughts. Maybe he has some input?

Apparently a pretty sharp chap.

[tony27]

Funny thing is that the supposably superior leonelli stator is the only one to have any real problems, I remember there being a leonelli stator available as a kit to fix the dodgy beta stator. First faulty stator I came across on a sherco was in about 03 when the ducati electronica ones were fazed out, the then importer said he hadn't had any fail before then

[copemech]

tony27, on Apr 26 2010, 03:16 AM, said:

Funny thing is that the supposably superior leonelli stator is the only one to have any real problems, I remember there being a leonelli stator available as a kit to fix the dodgy beta stator. First faulty stator I came across on a sherco was in about 03 when the ducati electronica ones were fazed out, the then importer said he hadn't had any fail before then

You may well be correct? Seems to me when the Leonelli's do start acting up there may be no obvious pattern to them, just craazy!

[HAM2]

copemech, on Apr 27 2010, 03:37 AM, said:

You may well be correct? Seems to me when the Leonelli's do start acting up there may be no obvious pattern to them, just craazy!

You can say that again,on mine,that was the most difficult ,time-consuming, fault that I ever had to chase down (I'm no mechanic by the way).

[Neo]

This is great information madbob,

Could you give us ANY part numbers you have and maybe some websites that helped you track this down.

I had seen the similarity with the vespa PX200E some months back but didn't investigate it as far as you have ....Well done and thanks for sharing this with us

Best of balance.
Neo

[madbob]

I ordered my pickup coil from A.J.Sutton in Milton Keynes it was £13.75 including the postage

ELECTRONIC STATOR PICK UP - PX-PK-T5

http://www.vespaaccessories.co.uk/SPARES/p...asp?GPN=VE16002

One bit of advice though make sure you route the cables as far back to the stator plate as you can or they can rub on the flywheel

Rob

[Neo]

Brilliant!!!...Thanks Bob.

Interesting that even Vespa Accessories are buy these from someone

Best of balance.
Neo