Alternator upgrade

Alternator failed again (lasted 5 years). Did some research and got a lot of help from Grahame on an upgrade to a 90Amp version (from 55Amp). Note that the Sterling B2B is rated at 50Amp so it could be drawing power at the alternator maximum for long periods. That should not be so serious now that I have 280W solar as well.

Alternator model: Lucas LRB197 (Bosc 0986035770)





Needs longer brackets  - 40mm longer, obtained by buying two new ones (Vexi were selling them for £2.55 to clear stock). Welded beautiful by Lee at work.

Two different part numbers for alternator bracket. Mine was 99449305  


Longer fan belt 10 x 950mm

All in place

Issues:
It was to awkward to put in a bigger cable from alternator to the starter motor (main battery connection). I may do a separate longer cable back to the battery.

The ignition light does not come on until the alternator is energized by the revs going up to 1500. People say this is not a problem. A potential fix is to put in an extra resistor in parallel with the ignition light.

Good general information on charging circuits here


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