Author Topic: 1967 V7 700 charging issue (regulator)  (Read 1875 times)

Offline Antietam Classic Cycle

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Re: 1967 V7 700 charging issue (regulator)
« Reply #30 on: January 26, 2021, 09:24:51 AM »
Charlie’s link to thisoldtractor shows one mounted similarly with home made bracket, this looks easy way to do it





I would think with this type of bracket, that a rear alternator support would be necessary as well. Otherwise those two M6 bolts would be under a lot of stress.


Have you tried a different regulator yet as per the article from Greg Field Bender? Here's an excellent tutorial he did on overhauling the generator note in the 4th picture in the nice even colour of the armature, any irregularities point to a bad armature winding. He used fibreglass tape for the fields, that's a bit extreme but should last for the next hundred years.
https://www.thisoldtractor.com/moto_guzzi_loopframe_generator_repair_-_magneti_marelli.html
Charlie

Offline lazlokovacs

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Re: 1967 V7 700 charging issue (regulator)
« Reply #31 on: January 26, 2021, 02:28:01 PM »

Offline lazlokovacs

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Re: 1967 V7 700 charging issue (regulator)
« Reply #32 on: January 26, 2021, 02:36:15 PM »

and thanks kiwi_roy for the data point, last thing I want to do is go to the trouble of getting the engine out etc only to find it breaks again in a couple of years.


so what is the right alternator to use?

I notice on the scramblercycle website they've had trouble with the alternator that they've fitted in the past and are no longer offering it.


oops. the answer to my question was on thisoldtractor courtesy of Charlie. Thanks again!

« Last Edit: January 26, 2021, 02:39:25 PM by lazlokovacs »

Offline lazlokovacs

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Re: 1967 V7 700 charging issue (regulator)
« Reply #33 on: January 26, 2021, 02:41:21 PM »
one more stupid question! do I need to change my bosch electronic voltage regulator, (part number 111903803D) unit if I switch to an alternator?

Wildgoose Chase Moto Guzzi

Re: 1967 V7 700 charging issue (regulator)
« Reply #33 on: January 26, 2021, 02:41:21 PM »

Offline Don G

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Re: 1967 V7 700 charging issue (regulator)
« Reply #34 on: January 26, 2021, 03:39:38 PM »
Modern alternators have an internal solid state regulator, wire in a switched 12V current source to the field coils and a 10 gauge wire to the battery + or ignition switch from the 6 MM post on the back of the alternator and you are done. Easy peasy.   DonG

Offline Antietam Classic Cycle

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Re: 1967 V7 700 charging issue (regulator)
« Reply #35 on: January 26, 2021, 06:15:29 PM »
one more stupid question! do I need to change my bosch electronic voltage regulator, (part number 111903803D) unit if I switch to an alternator?

It won't be used.
Charlie

Online jacksonracingcomau

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Re: 1967 V7 700 charging issue (regulator)
« Reply #36 on: January 26, 2021, 10:46:39 PM »
I would think with this type of bracket, that a rear alternator support would be necessary as well. Otherwise those two M6 bolts would be under a lot of stress.


Of course we don’t know how long that lasted, but new bracket could be welded to timing chest if one had any doubts, making it very similar to carc mount.
Or someone who knows where bike in pic is now will post mileage and condition.


Offline Antietam Classic Cycle

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Re: 1967 V7 700 charging issue (regulator)
« Reply #38 on: January 27, 2021, 08:37:10 AM »
I'm looking at this one

https://www.ebay.com/itm/Lichtmaschine-Kubota-Mower-Turf-F-2560-2880-3060-Tractor-Utility-B26-KX41-R310/184487726161?hash=item2af4534c51:g:LaYAAOSwylhcnhdD

sound good?

I would recommend spending a bit more and finding a genuine Nippon Denso made unit vs. a Chinese copy. The reason Scrambler Cycle stopped offering their kits is because of a high failure rate of the ND copy alternators.
Charlie

Offline lazlokovacs

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Re: 1967 V7 700 charging issue (regulator)
« Reply #39 on: January 27, 2021, 01:16:50 PM »
good info thanks

I was wondering what the deal was at scrambler cycle...

Offline lazlokovacs

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Re: 1967 V7 700 charging issue (regulator)
« Reply #40 on: January 27, 2021, 03:06:47 PM »
a genuine ND is on its way thanks everyone

While we're drifting this thread... is it easy to convert a left shifting peg v750 back to right hand shift...?

I've spent years on old triumphs so it's not at all alien to me and I hate the mess of shafts and linkage slop inherent in the Left hand shift...

Offline Antietam Classic Cycle

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Re: 1967 V7 700 charging issue (regulator)
« Reply #41 on: January 27, 2021, 03:40:09 PM »
a genuine ND is on its way thanks everyone

While we're drifting this thread... is it easy to convert a left shifting peg v750 back to right hand shift...?

I've spent years on old triumphs so it's not at all alien to me and I hate the mess of shafts and linkage slop inherent in the Left hand shift...

Yes. You'll need the left brake pedal and shaft, the shift shaft that goes through the transmission and the shift pedal. Mark @ Moto Guzzi Classics has the brake pedal and shaft.
https://www.ebay.com/itm/Moto-Guzzi-Left-brake-pedal-Assembly/323814223091
Charlie

Offline lazlokovacs

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Re: 1967 V7 700 charging issue (regulator)
« Reply #42 on: January 27, 2021, 04:50:59 PM »
brilliant cheers :thumb:

Offline lazlokovacs

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Re: 1967 V7 700 charging issue (regulator)
« Reply #43 on: March 20, 2021, 05:55:31 PM »
update>>>>

I made a half inch thick ally bracket mounted on the front of the case as per the pics in this thread (PLUS support from the rear...)

Only problem is... You can line it up so that the belt rubs on the bracket or line it up so that the alternator pulley rubs on the front engine cover.. I notice on the thisoldtractor there are no pics of Kurt's bracket WITH the cover on. grrrrrrrrr


Kurt thomas if you're out there tell me how you did it!!!!!!




Online jacksonracingcomau

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Re: 1967 V7 700 charging issue (regulator)
« Reply #44 on: March 20, 2021, 08:22:54 PM »
update>>>>

I made a half inch thick ally bracket mounted on the front of the case as per the pics in this thread (PLUS support from the rear...)

Only problem is... You can line it up so that the belt rubs on the bracket or line it up so that the alternator pulley rubs on the front engine cover.. I notice on the thisoldtractor there are no pics of Kurt's bracket WITH the cover on. grrrrrrrrr


Kurt thomas if you're out there tell me how you did it!!!!!!
I think he mentioned chopping “ears” off cover in his spiel
But remember the cover is just aesthetic, doesn’t actually seal anything
At best is a guard against stones getting to belt
Before you attack cover I’d be tempted to test run with no cover at all, like almost every car
You can also space cover out to get a bit of clearance

Offline lazlokovacs

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Re: 1967 V7 700 charging issue (regulator)
« Reply #45 on: March 21, 2021, 04:03:04 AM »
yeah, I cut the ears off, that gives you lateral clearance. For fore/aft clearance I guess I'm  gonna space it out... Bit annoying though, Quite visually attractive when it's flush.

Well... you don't look at the mantlepiece while you're stoking etc


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