Fitting a three phase rectifier on a AC lightning Johnson 35HP ?

[Mullerhawk]

Hi guys,

I was looking into fitting a three phase 12v rectifier on my Johnson 35HP (AC Lightning version). But looking at the original one it's 150USD+ so thats out of the question.

Would it be possible to fit a generic motorcycle rectifier like this one: http://www.ebay.co.uk/itm/New-solid...32?pt=UK_Motorcycle_Parts&hash=item3cc2a85794 ?

Im not sure how many Watts I need to charge the 12v battery I plan to put in the boat (90ah). If I calculate correct, and if the coil can supply that kind of ampage this rectifier would put out almost 16A?

// Michael

 

[Haffiman]

Re: Fitting a three phase rectifier on a AC lightning Johnson 35HP ?

You will get, if lucky, around 3A at full rpm. That is what the coil gives out.

 

[Mullerhawk]

Re: Fitting a three phase rectifier on a AC lightning Johnson 35HP ?

Not much then,

But should be enough to keep the battery happy. Since I do not have electric starter I will only power a 27W LED worklight and a small 10W lantern and a Eagle 320 fish finder (usually not at the same time). So as long as my id? works I will be happy!

 

[F_R]

Re: Fitting a three phase rectifier on a AC lightning Johnson 35HP ?

It would appear that the rectifier would be satisfactory. Actually, more than satisfactory, since it seems to also have a regulator built in. Your alternator should put out up to 5 amps.

You can make one on the cheap from off-the-shelf diodes. You need 6 of them. Here in US, we have Radio Shack stores, I don't know what you have in Sweden.