Convert internally regulated Beta alt to external

[Wainui]

I have a 150 amp alt on my Beta 50 charging 4x6v lifeline AGMs.
I would like to convert the alt to external regulation.
What make is this alt and can it be converted, and is it worth doing?

[STAYER]

Interested, looking to do the same, have a new Beta 75hp with 175 Amp alternator.

[RaymondR]

It looks like a Bosch Universal and why do you want to convert it to external regulator. If it is a Bosch Universal a set pf brushes with external terminals which replaces the internal regulator is available.

[Stu Jackson]

Wouldn't imagine it would be much different:


https://marinehowto.com/external-alt...on-conversion/

[donradcliffe]

Talk to the Beta guys about a brush kit. They sold me one for the Iskra alternator on my Beta 50.

[smac999]

any alt can be converted. just remove and take to a local alt / starter shop to be done.

[Wainui]

I believe that mine is a 120 amp Mahle alternator.
Will contact Beta.
Will eternally regulated make charging that much faster?

[donradcliffe]

Sorry, what you are looking for is a brush block, not a brush kit. External regulation will cut down on the motor time required to charge the batteries by using a charging voltage that varies with time, rather than a constant voltage.

[DesKeech]

I've done this on a similar alternator. I opened it up and found brought a lead out through the back plate from the excitation brush on the rotor. I have that connected to A Sterling external regulator. It charges much quicker than the standard auto charge rate.

[RaymondR]

Originally Posted by DesKeech

I've done this on a similar alternator. I opened it up and found brought a lead out through the back plate from the excitation brush on the rotor. I have that connected to A Sterling external regulator. It charges much quicker than the standard auto charge rate.

Yep, done this once on a Nikendenso on a Yanmah engine. Used a 12V motor speed controller to supply the adjustable excitation current and monitored the alternator output voltage and adjusted it back manually as the voltage rose.

[mlydon]

If all you re looking to do is keep a starting battery charged, internal regulation is fine. If you want to charge your house bank, do yourself a big favor and get a good external regulator, and learn how to program it.

Matt

[Stu Jackson]

Originally Posted by Wainui

........................
Will eternally regulated make charging that much faster?

https://forums.sailboatowners.com/threads/musings-regarding-external-voltage-regulation.125392/