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Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

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Old 01-31-2007, 8:48 PM   #1
 
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Voltage Regulator-Rectifier

Anyone with a 93-99 900RR that has done the voltage rectifier swap? I heard one or two guys are using an R1 rectifier. If you're using anything other than stock of replacement rectifier please let me know which one works well and doesn't overcharge the battery or damage the electrical system.

Thanks
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Old 01-31-2007, 9:29 PM   #2
 
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Re: Voltage Regulator-Rectifier

Most motorcycles use the same old 70's technology shunt type r/r design. Three wires in, two out. Your challenge is finding at least one secure mounting hole and making solid connections that don't burn up. That's about it.
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Old 01-31-2007, 10:19 PM   #3
 
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Re: Voltage Regulator-Rectifier

I thought all R/R's are different, reguardless of wether they have three wires in and two out, or not? Won't there be a difference that would cause the battery to overcharge or not charge enough if I used the "wrong" R/R?

I don't want to harm the elctrical system or battery.
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Old 02-06-2007, 11:39 AM   #4
 
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Re: Voltage Regulator-Rectifier

if you have problems finding a good rectifier at a good price you can try the Ducati Energia rectifiers ..100% compatible. here costs around 55 euros while the original costs a lot more

there are no problems as long as the regulated voltage meets the requirements of your model
mine charges constantly 14.5 V so it's ok
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Old 02-06-2007, 10:54 PM   #5
 
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Re: Voltage Regulator-Rectifier

I heard of guys using the later year rectifiers on early years, but I've never heard or someone using a Yamaha reg on a Honda.

The biggest problem with rectifiers, and in my experience why the burn out, is the lack of a good ground to the battery. The back of the regulator is metal and is supposed to ground against the frame. After a year or two, the aluminum gets a layer of oxidation on it that makes the gound very weak. The rectifier, which uses the ground to determine battery voltage, thinks the battery is low and over charges in an attempt to get things back to normal. This usually burns out the reg or battery or both.

Running a ground wire to one of the bolts on the reg with a big round wire end that contacts the back of the reg almost always fixes the problem. As long as the system isn't too damaged. The over heating in the system also often causes the connector plug between the reg and the stator to go bad as well, so be sure to check it for melting or bad wires.
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Old 02-07-2007, 1:31 AM   #6
 
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Re: Voltage Regulator-Rectifier

You can put certain model Yammy reg/reg's on your Honda. Sometimes they require flush placement on the frame for head dispersal which can be problematic...

When my 600's reg/reg bit the dust I bought a replacement generic one off eBay for 20 bucks (that's AU, so approx 14 US) and it's working fine. She's a track bike too so cops a right thrashing. The generic one is covered in fins so doesn't require a frame anchor which makes it easy for fitment.
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Old 02-07-2007, 3:51 PM   #7
 
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Re: Voltage Regulator-Rectifier

like dmack said you should verify all your contacts and make sure that cooling is well done otherwise fry you rr.
there's a ducati energia rr compatible for hornet and 900 rr, everything fits just fine so you dont have to modify anything
around here every honda shop has it as an alternative to the original one
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