Prisondawg
XS650 Addict
ultimately I have charging issues. I have been reading threads for hours and I see a lot of reference to creating a regulator rectifier from scratch using most often a Chrysler or a Fiat regulator, and a 3 phase bridge rectifier. I would like to attempt to do this build. But I’d like clarity on it.
I know there are two different versions of this build . One for 1979 and down and one for 1980 up. I know the need for the two different versions is the fact of points based ignition vs TCI. But I would like clarity in where the two builds deviate.
I’ve read about ungrounding the brushes in the 1979 and down bikes. What is the benefit of that (my bike is a 1981 so this is purely a curiosity)
My brush screw heads are pretty stripped out at this point and I ordered the nylon screws before doing my research, would it make a difference in a bike produced after 1980?
From what I can tell. My plan is to get the fiat regulator .
Part number 4475112
And the rectifier from windy nation
https://www.windynation.com/Rectifier/35-Amp-3-Phase-Bridge-Rectifier/-/218?p=YzE9MjA=
My understanding of the build is that the regulator has 2 wires. A red and a green
The red from the reg goes to the brown on the bike and the green from the reg goes to the green on the bike, meanwhile the body of the regulator itself will be grounded by either mounting to the frame or mounting to a grounded wire.
Meanwhile there are 5 spades on the rectifier.
Three of those spades have a ~ symbol on them. Those three will be attached to the three white wires from the alternator. The two remaining spades will be used for a battery positive and a ground ( does it matter which ?)
From there the two units must be mounted on a piece of aluminum whit some thickness to it. Do both pieces need to be mounted to the aluminum ?
It seems as though the fiat regulator is already made of heat sink. Can I just mount the rectifier to the regulator and let it cool through convection ? Or does it need its own heat sink?
Also as a related question, if my rotor proves to be bad, is it possible to use a rotor from 1979 or earlier model in a 1980 and up?
I read that pamcopete outlined how to create this regulator rectifier , however I couldn’t find a post from him about it.
Maybe this thread can serve as a unified post about this build.
I know there are two different versions of this build . One for 1979 and down and one for 1980 up. I know the need for the two different versions is the fact of points based ignition vs TCI. But I would like clarity in where the two builds deviate.
I’ve read about ungrounding the brushes in the 1979 and down bikes. What is the benefit of that (my bike is a 1981 so this is purely a curiosity)
My brush screw heads are pretty stripped out at this point and I ordered the nylon screws before doing my research, would it make a difference in a bike produced after 1980?
From what I can tell. My plan is to get the fiat regulator .
Part number 4475112
And the rectifier from windy nation
https://www.windynation.com/Rectifier/35-Amp-3-Phase-Bridge-Rectifier/-/218?p=YzE9MjA=
My understanding of the build is that the regulator has 2 wires. A red and a green
The red from the reg goes to the brown on the bike and the green from the reg goes to the green on the bike, meanwhile the body of the regulator itself will be grounded by either mounting to the frame or mounting to a grounded wire.
Meanwhile there are 5 spades on the rectifier.
Three of those spades have a ~ symbol on them. Those three will be attached to the three white wires from the alternator. The two remaining spades will be used for a battery positive and a ground ( does it matter which ?)
From there the two units must be mounted on a piece of aluminum whit some thickness to it. Do both pieces need to be mounted to the aluminum ?
It seems as though the fiat regulator is already made of heat sink. Can I just mount the rectifier to the regulator and let it cool through convection ? Or does it need its own heat sink?
Also as a related question, if my rotor proves to be bad, is it possible to use a rotor from 1979 or earlier model in a 1980 and up?
I read that pamcopete outlined how to create this regulator rectifier , however I couldn’t find a post from him about it.
Maybe this thread can serve as a unified post about this build.