Alternator fit?

[robmcg]

Our current alternator on a Bukh DV36 works fine but is rated at, I think, just 40 amps output. I have a newer alternator (long story) from a Beta 38 rated at 60 amps. Initial thoughts are the bolt locations are similar so could/would it be possible to change it over or are the connectors at the back likely to be so wildly different it would just be a lash up? No smart charger in the system so just a theoretical swap. Thoughts? Not absolutely necessary to change but just thought the extra output might be useful for the 300 A/hr house batteries.

Rob

 

[Mistroma]

Assuming you have flooded batteries then they should be able to take 40A when 50% discharged. So the alternator seems to be a bit small even without any "smart" regulator. I imagine that the 60A alternator would be worthwhile. However, that still assumes that their output vs. rpm curves are similar.

Situation is even worse if you have AGM batteries as they can soak up a much larger charge. I'm guessing you don't have these.

 

[robmcg]

Assuming you have flooded batteries then they should be able to take 40A when 50% discharged. So the alternator seems to be a bit small even without any "smart" regulator. I imagine that the 60A alternator would be worthwhile. However, that still assumes that their output vs. rpm curves are similar.

Situation is even worse if you have AGM batteries as they can soak up a much larger charge. I'm guessing you don't have these.

No AGM's, these were replaced last year when they died a slow and (wallet) painful death. Replaced with leisure batteries.