Main Menu

regulator/rectifier problem

Started by bdfinally, November 22, 2013, 02:21:21 PM

Previous topic - Next topic
Print
Go Down Pages1 2
User actions

bdfinally

November 22, 2013, 02:21:21 PM
I assume a smoking one after a 2 mile ride is definitely a problem. 2000 M750 with 39Kmiles. Had a problem keeping the battery charged towards the end of last winter and now the beginning of this over sustained cold days. It's stopped smoking and the bike will start. All electrics seem to work.

Buy a used one and plug and play or deeper problem?

As always, thanks in advance.
The tyranny of the rat race is not yet final...HST

rule62

#1
November 22, 2013, 04:03:47 PM
Check the connector. They are prone to corrosion which can then cause the RR to fail. It's a common problem and a simple fix. I bought a used one. You could also upgrade to a mosfet RR.

Speeddog

#2
November 22, 2013, 04:22:32 PM
That's the magic smoke that's escaped.

I've fitted an Electrosport ESR439 to a Sport 1000 that had a disturbing appetite for RR's.
Not out of the woods yet, as it's only been in for 3 months.

I chatted with the guy at Electrosport and he said that was the best upgrade that would fit.
It has a slightly more robust 3-wire connector as well, I think that's part of the package.
Confirm that with them before buying.
- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

bdfinally

#3
November 23, 2013, 11:51:51 AM
I found where the mystery smoke was coming from.



That's the connection from the ignition switch. Is it suppose to lie behind the rectifier/regulator?

the R/R connectors looked ok except for this one



and the rest of the hot messy



Once I saw what was what, I reconnected the R/R just to see if the ignition connection was the culprit, but no power. Does the R/R need to be grounded to the frame to function?

and sorry for the crappy pics, dig camera is down and my phone suxs.

The tyranny of the rat race is not yet final...HST

ducpainter

#4
November 23, 2013, 12:55:01 PM
I don't think it has to be grounded for the bike to get battery voltage.

If the ignition was plugged in I'd sooner suspect a bad connection in that fried connector, or a bad wire from it.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


bdfinally

#5
November 23, 2013, 04:26:22 PM
I asked because everything work last night. Bike started, headlight, signals the works. Now nothing
The tyranny of the rat race is not yet final...HST

ducpainter

#6
November 23, 2013, 05:03:09 PM
Quote from: bdfinally on November 23, 2013, 04:26:22 PM
I asked because everything work last night. Bike started, headlight, signals the works. Now nothing
...but you touched it. ;D
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


bdfinally

#7
November 23, 2013, 08:19:18 PM
tell me about it... [laugh]
The tyranny of the rat race is not yet final...HST

ducpainter

#8
November 24, 2013, 03:34:59 AM
Do you have a wiring diagram?
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Howie

#9
November 24, 2013, 04:44:12 AM Last Edit: November 24, 2013, 04:47:34 AM by howie
The three fat yellow wires go to the stator, including the burnt connector in your photo.  The two red wires are from the 40 amp fuse.  The two black wires are ground.  The body of the regulator does not need to be grounded to work since you have ground wires, but good contact is needed to help the regulator shed heat.  The connection to the stator needs to be cut back until you get to good copper.  If your question is should that other connector should have been crushed under the regulator the answer is no.  That will also need repair.  I will look at my bike later and see if I can find that connector without taking the bike apart.  

I would repair all connections first, then test.  I would be at least a little surprised if the regulator survived though.

Oh, for a wiring diagram go here  http://www.ducatiusa.com/services/maintenance/index.do  The manuals only go back to 2001, but, except for the addition of a tach all should be the same.

ducpainter

#10
November 24, 2013, 05:09:52 AM
The diagram for my 96 carby is available.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Langanobob

#11
November 24, 2013, 06:22:51 AM Last Edit: November 24, 2013, 06:26:30 AM by Langanobob
Our resident electrical engineer SuzyJ recommends a replacement Shindengen  MOSFET type of regulator, here's a link to a thread:

http://www.ducatimonsterforum.org/index.php?topic=63569.0

I don't know how it compares to an Electrosport regulator or if the Electrosport version is a MOSFET type.

Bob

Howie

#12
November 24, 2013, 07:21:42 AM
Quote from: Langanobob on November 24, 2013, 06:22:51 AM
Our resident electrical engineer SuzyJ recommends a replacement Shindengen  MOSFET type of regulator, here's a link to a thread:

http://www.ducatimonsterforum.org/index.php?topic=63569.0

I don't know how it compares to an Electrosport regulator or if the Electrosport version is a MOSFET type.

Bob

Rick's is MOSFET  http://ricksmotorsportelectrics.com/rectifier-regulators  As good as Shindengen?  Dunno.

bdfinally

#13
November 24, 2013, 07:24:02 AM
Quote from: ducpainter on November 24, 2013, 03:34:59 AM
Do you have a wiring diagram?

I've got a M750 scanned manual full OCR, so I'm good on that point.
The tyranny of the rat race is not yet final...HST

bdfinally

#14
November 24, 2013, 08:22:36 AM
I'm thinking I'll go with this

http://www.rmstator.com/en/catalog-years/2000/ducati/750-monster/mosfet-regulator-rectifier-rm30504h

since I'll kill two birds, it including the harness side connectors with it.

Suggestions on the replacing the melted ignition switch connection?
The tyranny of the rat race is not yet final...HST
Print
Go Up Pages1 2
User actions