It's the charging question again
Apologies for this, as I know there are plenty of threads on this one already, but I just wanted some clarification on a few points if that is ok.
So I have now had this bike for just over 4 years, it's a 1994 CBR900RRR and by far the best bike I have ever owned, it's battered and tatty, but under the cosmetics, I keep it completely to process, in fact for the first time since I had it, it passed the MOT without even an advisory. Yet every year I have to replace the stator, I can tell when it is going as the speedo starts messing around. I have replaced it 4 times now each time with a £90 aftermarket one from Electrax, which they them selves admitted over the phone that they suffer from the heat. My take on it is that £90 a year is ok, but this time I would dearly like to make it last a little longer. The biggest issue is that living in London with the now 20mph speed limit everywhere, means that you just can't keep the temperature down in the summer, just can't get the air flow, and I get the impression that this fireblade can run kinda hot.
The last time it went, I found a genuine Fireblade stator from a breaker, and I it came with bullet connectors on instead of the usual 3 blade plug. Now these corroded through which is when I first noticed an issue, and when I spotted that I just cleaned up the wires and re did the connectors and it was fine so long as I rode without the lights on. I thought that 3 days riding around like that even in the stop start traffic lights of London that would be enough to fully charge the battery again. But the next time I put the lights on, riding back at night, again, the speedo started doing the funky charging system shake (To clarify, I have no reason for it to be the speedo, as it is simply not consistent enough to be the speedo sensor). So, I am now suspecting that this stator is now failing, due to age more than anything, but here is what it is putting out on a continuity test:
between any of the three windings, 0 ohms, full continuity.
Between each winding and earth:
first - 30.1 MΩ
second - 30.1 MΩ
third - 28.6 MΩ
I understand that the windings to earth should be ∞ Ω as in no current flowing at all between individual windings and earth.
So I am currently charging the battery with my charger, I believe it is conditioning the battery now as the battery measures 13.4V at the terminals off the bike, though I have not left it to rest yet, so am expecting it to go down a little from there, but I think a full 5 - 10 hour cycle might help. The battery is 4 years old mind, and when I checked it I did notice the volts dropping a little when I disconnected it from the charger, I assume it is a little like taking the top off a fizzy bottle though and that it will normalize within a few minutes of being disconnected. That aside, I think all you experts out there should have enough info to go on. Let me know if you need more and I will go and test something for you.
So the second question is, I have found a genuine Stator for this bike brand new at the costly price of £425, is it worth buying, considering a couple of things, firstly I will be moving out of central London fairly soon so won't be subject to constant 20mph commuting, but also considering the age of the rest of the wiring on the bike and the resistance within the wiring. Is this one more likely to last more than just the one year, as I have heard that aftermarket ones just aren't up to the mark?
Thanks in advance for help on this one.