Stopped charging

[BSA500]

Just to end this thread. Rode the bike through a monsoon yesterday with the lights on all the way home(13 miles). Charging was faultless

[BSA500]

From the duff battery thread here we go again. Battery def gone and now no charging. I hate the world all over again.

[duTch]

 I suggest buying the cheapest battery you can find of reasonable capacity (I used a 6N6-1B-1, that's 6AH, and now keep it charged as a 'spare')  until you know you don't have a component fault

[BSA500]

I popped the current (current get it :) ) battery on charge for 12 hours and no improvement so I think that's had it.

[Butch (cb)]

Voltage reg? Though I think you said you'd fitted a new one.

[BSA500]

I did. I am hoping for a slipping dynamo drive.

[BSA_54A10]

When I started at Simms, battery plates were 3mm thick and never failed.
When I left they were 0.5mm thick and broke if you looked hard at them. On our motorcycle you have to fit either
1) AGM PVR sealed batteries
or
2) Cyclons with curved plates that don't break & fall off.

Down side is
1) both are expensive
2) limited range in 6 V
I used to run 2 x 2.5 Ah cyclongs in parallel to give me 5 Ah however they were so reliable I took one out to use in another bike.

[BSA500]

posted this in the duff battery thread as an update..

Okay some testing done...
1. Dynamo drive/chain ok no slip or breaks
2. Dynamo wiring/brushes etc a ok no issues
3. Dynamo output 20+ volts rising smoothly(tested at regulator connections) its a 12v armature
4. Brown wire from regulator to ammeter/battery etc disconnected and tested
5. 4 volts max  rising smoothly to 4v but no more 
6. Red earth cable from regulator tested with audible tone a ok
7. ? This reg is brand new so it shouldn't be a problem the last one lasted 5 years until this exact same symptoms happened. Sorry but it has to be said WTF.
I am going to send the reg for testing as a double check and go from there. I will use the bike for work as its daylight only and now with a new battery fitted I will have brake lights.

[BSA500]

Regulator sent off for testing. So she has been a little difficult to start even with a new mag. So checked the mag timing and yes a little retarded so took the pinion off, actually no the bloody extract bolt has decided that's the last thing it's going to do. Am I cursed. Shoot me it would be a kindness. I just want to ride it,its bloody summer.

[BSA500]

So update new reg fitted rebuilt mag fitted both working faultless :)

[Topdad]

Great now ride it ,with a big grin ....at last!

[BSA500]

Will do. I can ride through Kent's beautiful countryside to get to work each day :)