Me again....when I bought my plunger ES2 yonks ago it had a small sealed 6 volt battery and the previous owner had removed the dynamo brushes because he hardly ever rode it at night and (his words) 'the sealed battery was likely to explode if charged'.....
I left it as is as I don't ride it at night but does that make any sense? Exploding battery? I may now want to ride at night and I want reinstate the brushes and replace the now very tired sealed battery.
Is it ok to install a modern sealed battery or do I have to go back to to an old fashioned lead acid type? Is exploding sealed batteries a myth or........?
Cheers, Ben Tomlin
It's...
... a funny way to disable charging as it would have been much easier to merely disconnect the dynamo leads.
I use sealed alarm type batteries which are cheap, can be fitted in any orientation and don't seem to suffer at all being charged by the dynamo - I have retained the RB108 mechanical regulator.
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Just don’t use a Lithium…
Just don’t use a Lithium battery without the right charger!
Dan
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Voltage regulator
I have a new Motobatt sealed battery on the way and I'm toying with the idea of fitting a Paul Goff electronic voltage regulator as suggested by Adam....
Ian, I see you don't have any problems with the mechanical regulator.......my regulator has a steel lid held in place by a long spring wire clip over the top of if, is that an RB108? I googled RB108 and they all appear to have a fixed aluminium cover?
Also my ES2's regulator is in the tool box.....is that where they always were?
Ben Tomlin
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Slip of the fingers...
... I meant RB107 which is the one as you say with the wire clip.
The position varied according to year - I've fitted mine under the seat with a bracket to the mudguard support cross member. When I bought the bike it was attached to the back of the battery support but it was too hard to get at there.
I adjusted it off the bike using one of these: https://www.ebay.co.uk/itm/Universal-Adjustable-AC-DC-Switching-Power-Supply-Adapter-w-LED-Voltage-Display/154310631441?hash=item23eda16011:g:AlUAAOSw0G1gE9ug
which was much easier than using the engine to drive the dynamo and seems to have been successful.
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Voltage regulator
Stop press........Ian, a bit more googling and it looks like my regulator is an MCR2.....wondering if that would work safely with my new sealed battery???
Ben Tomlin
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I think...
.. the MCR2 and RB107 are pretty much the same but I seem to remember that the order of the bullet connectors is different - FADE as opposed to FAED.
I don't like those split bullets Lucas used for the regulator and dynamo but there aren't really alternatives.
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Unless the battery was your bog standard non-rechargeable types being used on a "total loss"
basis, it sounds like bullsh to me. Why sabotage a working system...unless there was something
fundamentally wrong with it and this a sort of 'workaround': what powers the brake light? There are many options for sealed motorcycle batteries from Motbatt and Burlen that will fit in ANY orientation in your existing battery box without leaking. Paul Goff (for example) can supply a brilliant electronic regulator which will fit inside your brass Lucas regulator case which is another of the standard sensible upgrades to the electrics on these great bikes. Putting my deer stalker hat on, I suspect there's a reason for the PO's antics.