Ducati 907ie Rectifier

discussions specific to the 907IE
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englishstiv
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Ducati 907ie Rectifier

Post by englishstiv »

I have found a UK supplier of this which I believe is supplied by Electrosport in the states are they suitable replacements?
http://www.electrosport.com/media/catal ... r510_1.jpg


https://images-na.ssl-images-amazon.com ... L1000_.jpg
DUCATI 907ie 1992
HARLEY DAVIDSON ELECTRA GLIDE CLASSIC 1991
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englishstiv
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Re: Ducati 907ie Rectifier

Post by englishstiv »

ANY ONE KNOW - ARE THEY ANY GOOD/
DUCATI 907ie 1992
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Re: Ducati 907ie Rectifier

Post by Finnpaso »

Looks, that such is not Electrex. I dont know realibility of those, but Electrex is very good one. Stiv, if You want Electrex, i think, that they have importer from USA to UK .... As last time, when i ordered them from USA(3 units), items came to me from UK, not direct from USA! ....and then i had not to pay any taxes, VAT's etc...

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Re: Ducati 907ie Rectifier

Post by Finnpaso »

Still one note: Take all such connectors away and WELD wires very well and insulate them with 2 layers of heat shrink! Most of those regulator/generator problems are caused by poor/resistive CONNECTORS ! I know, i am elecrician... :thumbup:
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Re: Ducati 907ie Rectifier

Post by englishstiv »

:thumbup: Antti
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Re: Ducati 907ie Rectifier

Post by paso750 »

Stiv, why are you looking for a regulator in the first place? You mentioned you already had more than one. Imho it makes no sense spending the money if you're not certain that's the main issue.
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Re: Ducati 907ie Rectifier

Post by Finnpaso »

If regulator is failed, it can broke also alternator in left side of engine and SAME VIA VERSA. Allways with such problems have to measure insulations of generator (with suitable insulation meter/tester, what gives 250 test voltage!)and also all wires with Ohm meter. Regulator CANT be measured 100% surely, no matter in some Haynes Ducati manuals are noted some ohms between regulatos wires. Also regulator plate(case) ground must be 100% to bike frame! Same with wires from regulator to battery! Most these "cases" are coming from poor connectors between regulator and generator in left side little under steering head bearing. Also ST-series bikes suffer from these POOR/DIRTY connectors in same wires.
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Re: Ducati 907ie Rectifier

Post by Derek »

paso750 wrote:Stiv, why are you looking for a regulator in the first place? You mentioned you already had more than one. Imho it makes no sense spending the money if you're not certain that's the main issue.
And if I remember correctly he bought my old one which worked perfectly well before I replaced it with a MOSFET Shindengen.
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Re: Ducati 907ie Rectifier

Post by englishstiv »

My problem is that I want to test a brand new perfect Regulator/rectifier for a base level test as everything else seems to pan out okay.

All three current units that I have are just frustrating the issue as they all give a varied and different perspective.

Neither are for certain giving me any charge rate.

I have cut away as much of the shrouding that I can on the loom and apart from some oily damp residue no sign of scorch or burn marks, none of the plug sockets are corroded or damaged, Fuses are perfect and new.

All the earths are clean.

The engine on/off switch is in perfect working order and the spare when fitted gave the same results.

I am going to try some new Relays and I have a used but good Power Module waiting to be collected at the Post Office (all the way from Hawaii !!)

It is being a pig of a job to suss out what is the gremlin lurkin underneath.

I am also considering trying to find a local company that might be able to confirm if the ECU is at fault somewhere.

Please appreciate guys I am on a limited budget spend with my bikes and don't have access to unlimited funds for top dollar bespoke gear on this bike or any of my bikes for that fact. :thumbup:
Last edited by englishstiv on Wed Feb 07, 2018 10:46 pm, edited 1 time in total.
DUCATI 907ie 1992
HARLEY DAVIDSON ELECTRA GLIDE CLASSIC 1991
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Re: Ducati 907ie Rectifier

Post by englishstiv »

And if I remember correctly he bought my old one which worked perfectly well before I replaced it with a MOSFET Shindengen.

Derek last time I rode the bike she had your rectifier fitted and the man from the RAC suggested that might be the problem although he was not in any way familiar with the 907ie model. Problem is one of the other issues I had may of knackered yours in the process of the 30 mile ride I had before the battery died. I have a new rectifier but that caused the on/off switch problem that I still have, I admit it was a cheap one under £50.00 but I was hoping it might assist in confirming any other problems not creating a whole new issue. :,(


Hence my question.
DUCATI 907ie 1992
HARLEY DAVIDSON ELECTRA GLIDE CLASSIC 1991
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Re: Ducati 907ie Rectifier

Post by englishstiv »

If regulator is failed, it can broke also alternator in left side of engine and SAME VIA VERSA. Allways with such problems have to measure insulations of generator (with suitable insulation meter/tester, what gives 250 test voltage!)and also all wires with Ohm meter. Regulator CANT be measured 100% surely, no matter in some Haynes Ducati manuals are noted some ohms between regulatos wires. Also regulator plate(case) ground must be 100% to bike frame! Same with wires from regulator to battery! Most these "cases" are coming from poor connectors between regulator and generator in left side little under steering head bearing. Also ST-series bikes suffer from these POOR/DIRTY connectors in same wires.
Antii I have a good second hand Power Module ( all the way from Hawaii) awaiting my collection.

I have done due diligence on all the relevant earth and connectors and checked under the shrouding of the loom and all the connectors.

Alternator tested all within parameters


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minulla ole hyvä toinen käsi tehomoduuli (aina Hawaii) odottaa minun keräämistä. Olen tehnyt due diligence asianomaisen maan ja liittimet ja valvotaan burkaan ja kaikki liittimet. Laturi testattu kaikki parametrit
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Re: Ducati 907ie Rectifier

Post by Finnpaso »

Stiv, I have also one spare power module in my shelves, but never needeed it yet. It was from some car what use same module and exact same numbers on it. I have also some spare 907ie ECU's if You need such. But never use any multimeter to test MOSFET Regulator! MOSFET is such component (inside unit), that need to "ground yourself" as it needs only small voltage peak and such is dead then. There can be MOSFET regulators, but i havent seen such in Ducati spare part markets. Those originals are "crap" and Electrex is best.

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Re: Ducati 907ie Rectifier

Post by Finnpaso »

Btw, You are "lucky" if generator is ok, as if it fails, then it cost doubble (to rectifier) and have to open left side of engine... :thumbup:

Antti
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Re: Ducati 907ie Rectifier

Post by Derek »

Finnpaso wrote:... i havent seen such in Ducati spare part markets...i
Most of the current generation of Ducatis are now fitted with Shindengen MOSFET regulators.
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Re: Ducati 907ie Rectifier

Post by Finnpaso »

Thank's Derek! I know, that many Duck's use Shindengen jap regulators, but i didnt know that they use MOSFET's inside them. .....have to use more "google search" :mrgreen: :thumbup:
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Paso 750 -89 red/metal grey
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