Ducati Monster Forum

Moto Board => Tech => Topic started by: Speeddog on March 30, 2010, 02:41:27 PM

Title: Updated 3-phase regulator/rectifier....Maybe?
Post by: Speeddog on March 30, 2010, 02:41:27 PM
Stumbled across this as a result of a customer's '07 S4Rs that had a dead R/R.

Old version part#54040101A on the left, new version part#54040111C on the right.

Whether it's actually *better* or not remains to be seen.
In this case it'll be better, as it'll charge the battery....  :P


Top view, not a lot different, note lack of 'posts' in the fins and closer positioning of wires.

(http://farm3.static.flickr.com/2748/4477041033_79a609d6f0_o.jpg)


Bottom view, old version no fins, new version has fins.

(https://farm5.static.flickr.com/4047/4477817040_aa684cf343_o.jpg)


End view, different fin configuration is a lot more obvious:

(https://farm5.static.flickr.com/4068/4477817172_b5c67656bc_o.jpg)
Title: Re: Updated 3-phase regulator/rectifier
Post by: junior varsity on March 30, 2010, 04:53:42 PM
Very interesting. Plug-in wiring same as all the 3-phase systems regs? (my 1999 looks like lefty, there).
Title: Re: Updated 3-phase regulator/rectifier
Post by: Speeddog on March 30, 2010, 05:14:50 PM
Yep, plugs are the same, pigtail lengths same.

Bolt hole spacing same, overall size same.
Title: Re: Updated 3-phase regulator/rectifier
Post by: battlecry on March 31, 2010, 05:21:30 AM
Interesting.  I have the old kind, with the posts, on my '03.  Did the S4R have a lot of miles when it failed?  Or is it operating hours?
Title: Re: Updated 3-phase regulator/rectifier
Post by: Speeddog on March 31, 2010, 06:19:08 AM
Bike has about 8800 miles on it.
Not sure how he uses the bike, whether it's a weekender or a commuter.

Haven't seen many 3-phase regulators fail.

The new model is a Shindengen, I'm pretty sure the old one is as well.
Title: Re: Updated 3-phase regulator/rectifier
Post by: battlecry on March 31, 2010, 06:36:53 AM
Thanks, Speeddog.  R
Title: Re: Updated 3-phase regulator/rectifier
Post by: He Man on March 31, 2010, 07:26:16 AM
Arent 999/749 3phase regulators prone to failure causing the ECU to shut down during idle due to low voltage? do the 2v and 4v share the same voltage regulator?
Title: Re: Updated 3-phase regulator/rectifier
Post by: brad black on April 01, 2010, 01:53:31 AM
i thought they all had the one on the right.  all the ones that i've seen out here have.  that shindengan is a SH678 or something like that?.  i get them as an aftermarket unit out here.

i had a bad one on a 600m a month or so ago, only ever replaced a few of them.  it was very dead.
Title: Re: Updated 3-phase regulator/rectifier....Maybe?
Post by: Speeddog on April 01, 2010, 08:46:27 AM
This may have been a red herring.

A sample of what I've been able to get my eyes recently:

'97 916 with a 2-phase version of the 'right' style
Custom Monster with a 3-P 'right'
'01 M900 with a 3-P 'right'
'05 S2R800 with a 3-P 'left'
'03 M620 with a 3-P 'left'
'99 Cagiva Gran Canyon with a 3-P 'right'

So the body style seems to be meaningless.