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Post by rosey on Jun 8, 2018 9:14:25 GMT -5
It’s easy enough to test a 3 phase bridge rectifier with a multimeter if you research on-line, if multiple rectifiers have failed then it will not be producing DC and your battery will not charge.
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Post by HGH 770N on Jun 9, 2018 3:55:05 GMT -5
The rectifier needs a good ground earth threw the mounting on the battery box. Also they are renowned for melting the block connector and creating a bad connection or short across the phases .
The regulators are adjustable and explained in work shop manual
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Post by raychappo on Jun 9, 2018 7:16:48 GMT -5
I've fitted a solid state rectifier/regulator for a Gt750, i fitted it where the connector plug bracket is under the right hand side panel. Works a treat
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Post by charles on Jun 9, 2018 10:51:30 GMT -5
Ray --
Plz put this info into the "Parts Crossover" Thread. I lost a rectifier once and had to steal the replacement from the "Parts Bike". S'no fun...
CW
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Post by raychappo on Jun 9, 2018 11:50:00 GMT -5
I will do Charles. When I get home next week I'll find the part number and post a pic of where I fitted it
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gbcastro
1st Gear
Cascais, Portugal
Posts: 20 
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Post by gbcastro on Jun 12, 2018 12:35:38 GMT -5
My friend who's also motorcycle mechanic, spent the afternoon with the bike and assured me its the rotor thats demagnetised. Anyone had this problem before? Can it be magnetised or just a new one will solve?
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Post by timpa136 on Jun 12, 2018 16:47:27 GMT -5
My friend who's also motorcycle mechanic, spent the afternoon with the bike and assured me its the rotor thats demagnetised. Anyone had this problem before? Can it be magnetised or just a new one will solve? This only from memory, was the key on? I say that because the field coil is fed by the regulator to energize the rotor. Great replies from everybody. Tim |
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Post by goandy on Jun 13, 2018 5:55:53 GMT -5
You can use a generic rectifier- I used a 240V rated one on mine and it works perfectly. All it does is convert AC from the alternator/stator to DC. Has to be a ? two/three pole one? Can't remember as it's been a fair while now since I did mine. Use decent thick wire and new connectors as any poor connections will results in melting connectors and wires...
Or change the alternator/stator cover over and measure it up. Looking at your readings it's probably the stator if you've disconnected it from the system and done an AC voltage check.
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gbcastro
1st Gear
Cascais, Portugal
Posts: 20
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Post by gbcastro on Jun 13, 2018 9:48:27 GMT -5
Yes, did AC readings and got on all windings 6v at idle and almost 12v when around 4000 rpm. This has to be alternator problem, right?
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Post by raychappo on Jun 14, 2018 18:19:53 GMT -5
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gbcastro
1st Gear
Cascais, Portugal
Posts: 20
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Post by gbcastro on Jun 15, 2018 18:45:48 GMT -5
Thanks, I believe its the windings, nevertheless im tempted to change for this regulator/rectifier to avoid future problems.
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Post by goandy on Jun 18, 2018 7:48:28 GMT -5
Did you fix the problem?
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gbcastro
1st Gear
Cascais, Portugal
Posts: 20
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Post by gbcastro on Jun 24, 2018 17:18:02 GMT -5
Yes, it the regulator... Now its charging but its not great, so im getting one like Ray has.
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Post by raychappo on Jun 25, 2018 0:50:01 GMT -5
To fit mine, I removed the bracket that holds the connector plugs under the right hand cover then the regular lines up directly with the brackets bolt holes.
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