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Electrical question

Bazlerker

Well Known and Active Forum Website User
VOC Member
Last fall I went for a ride and forgot to turn on the headlight on my Alton equipped beast...I remembered that this is forbidden half way through the ride and switched it on - the headlight came on, so I thought I had got away with it..
I just put the bike back on the road, and discovered that the headlight would not come on with the bike not running -( the headlight comes on when the bike is running, but gets brighter as the engine revs..) so I assumed that the battery had died, and replaced it..
I just tried the headlights with the motor not running, and a fully charged battery - no lights..

Does this mean that I have fried the voltage reg?
 

Howard

Well Known and Active Forum Website User
VOC Member
Sounds like something duff in your battery circuit. I'd start by checking battery earth, then from battery to ammeter with a circuit tester (bulb and wire), then accross ammeter. Difficult to say from a distance, but it only sounds like duff connection or broken wire from your description (or as Bruce says, a dead fuse).

H
 

Bazlerker

Well Known and Active Forum Website User
VOC Member
There is a fuse, Ill check it tonight..thanks for the link to Podtronics..And one of the Canadian dealers is owned by a Vincent owner-John Oland..
 
Last edited:

roy the mechanic

Well Known and Active Forum Website User
VOC Member
If the headlamp gets brighter with engine speed the generator must be working. Check the battery connections, mine did this a while ago, one of the two power wires had come adrift.
 

Monkeypants

Well Known and Active Forum Website User
VOC Member
I also have an alton and sometimes forget to ride with the headlight on. I have run a couple of hundred miles this way, then turned the light on for awhile, then accidentally run the bike another 100 miles or so with the light off again. I have been running like this for a few years now and so far no problem, except the memory is deteriorating.
Perhaps I have had a problem with the Alton and I've forgotten.

No, I'm certain, the thing has worked just fine.

Glen
 

Howard

Well Known and Active Forum Website User
VOC Member
Not sure why running with headlamp off should cause a problem.
Headlights aren't compulsory in the UK, sometimes I use the lights and sometimes I don't. Cars have pulled out in front of me when I've had 60W headlight and high vis jacket on, on bright Summer's days (not this Summer, obviously), so I don't see the point of using lights permanently.

H
 

Len Matthews

Well Known and Active Forum Website User
VOC Member
On a slightly different subject not connected to Altons, my problem concerns Miller and Lucas dynamos. I usually test them on the bench using a power drill to spin them. By shorting F&D together, putting a voltmeter across these two and earth a good output is shown but when put back on the bike-nothing. Can't be incorrect rotation because my drill turns the armature the same way as on the bike. I've tried flashing the field coil to ensure correct polarity and ran a small bulb between D and battery Positive. The bulb should go out but just dims. What's wrong?
 

Howard

Well Known and Active Forum Website User
VOC Member
Have you tried a headlight bulb in place of the voltmeter? I'm not sure the voltmeter creates enough load.

H
 
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