MRC Forum- brought to you by www.morini-riders-club.com Member: g7AW3f

Hello,

I have been searching the forum regarding the best option to replace the reg/rec on my 500 and am still not sure what's the best option as most threads are not closed. I currently have a Ducati 344212 on mine (already installed when I bought the bike), and it's not performing well.

My stator is the one with the two yellows, one green and one white.

From what I have read, it appears that the correct regulator would be the Ducati 343142 (12V - 18A). Is that the case ?

I found a cheap Ducati reg/rec with the number 343152 (12V - 18A), do you think that would work instead of this 343142 ? They both have the G-G-R+B-C connectors. I tried to find a detailed info on these in order to understand what would be the differences but can't find any.

Cheers,

With the stator you mention, the two yellows are the AC output and as there is no other wiring (eg the red centre tap version) I would suggest using a generic Reg/Rec of they type used on many Japanese and British bikes. They do come in a variety of Wattages though so make sure you get one that handles say, 180W as a minimum. 2 phase as well.

Evening Steve and thank you for taking the time to reply.

Just want to make sure, since you are talking about two phase and I am not the most competent electrician around, the stator for the 500 is a single phase one, right ? Hence the two yellow wires ? Also, how would you tell the wattage on a regulator ?

From what I found on Mdinitalia, looks like the Ducati Electronica 343152 is suitable for Morini 350/500/501: https://www.mdinaitalia.co.uk/regulator ... -only.html.

From another thread, in the forum, the correct Ducati Electronica would be the 344212: viewtopic.php?f=7&t=1221&p=5688&hilit=d ... ator#p5688

And from another thread, it could be the 343142 altough it doesn't seem to have worked : viewtopic.php?f=7&t=7383

Sorry Michel, it was late for me, but yes it is a single phase type and the one from Mdina is good to use too. Apologies for my confusion!
As for telling what Wattage a rec/reg can handle, most sellers advertise the safe limits, either in Amps or Watts. None of the original Morini alternators give out more than about 140Watts so I always look for something safely higher than that. Sometimes I even start to use the old formulas of
Watts over Amps x Volts and/or Volts over Amps x Ohms then I need to lie down afterwards.

Thank you Steve !

I went ahead and bought the 343152, will report as soon as installed on the bike.

The so called bodyless alternators, last Model before Kokussan give abput 200 W !
They used to be combined with flywheels with marks for 350 and 500, ANT 1 and ANT 2
When I remember it well their Regulator was a 24 or 28 aH one.

With that alterator you even won't have Problems with heatet handlebars. The flywheel are the best ones (have them in my two bikes, 200 and 140W))

That's a surprise Norbert-I've never had one of those! Thanks for the information and I hope I haven't spoiled the job for Michel!

Don't worry Steve, no harm done so far

Norbert, could you give moe info on this "bodyless" alternator ? Do you know on which particular model it was installed ? And how would one recognise it ?