Norton Villiers F15

Hairyloon wrote:

Garak wrote:I'll try again: Fleabay Link

2.2µF is the correct value for condensers.

Oh, hang on, that link is for a 0.22µF... I hope you misplaced the decimal point?

Can I press you for an answer on that?
The new capacitor has arrived, but obviously if we've got a misplaced decimal point, then it probably wont be a lot of good.

EasyCap condensors from Brightspark Magnetos are 0.15 µF  and  0.22 µF
Hope that helps.

Woodsman wrote:EasyCap condensors from Brightspark Magnetos are 0.15 µF  and  0.22 µF
Hope that helps.

Yes, thank you. I think we can assume they're likely to be in the same order of magnitude.

Sorry, only just got your message.

The value is 0.22µF

I put the decimal point in the wrong place.

Garak wrote:Sorry, only just got your message.

The value is 0.22µF

I put the decimal point in the wrong place.

No worries. You gave a link to the right item, which is what matters.

Only problem now is that these ones are 220nF...

Hairyloon wrote:

No worries. You gave a link to the right item, which is what matters.

Only problem now is that these ones are 220nF...

220nF is 0.22uF

Robotstar5 wrote:

Hairyloon wrote:Only problem now is that these ones are 220nF...

220nF is 0.22uF

I know, I was teasing.

Well it's put together, but no sign of a spark...
I've put a meter to it and I'm getting as many as 30V at the HT lead which suggests at least the circuit is functioning, though I wouldn't claim it is a reliable reading.
I'm guessing at a weak magnet.
Any thoughts or suggestions?

I suddenly realised I never posted a picture of it...



As you see, the carb is missing. Most of the starter is there, but the spring is snapped, the bit that connects the starter to the flywheel is missing, as is any sign of a spark...

I did wonder for a moment about taking the alternator off this and putting it onto the Norman, so I would have a useful working generator, but I don't think that's a practical option, not least because I cannot see how the alternator connects to the engine here: there doesn't seem to be any way in to unbolt anything. :?
Silly idea anyway.

I have Operating and Spares Manual and also Overhaul Manual if needed.

Hairyloon wrote:
I did wonder for a moment about taking the alternator off this and putting it onto the Norman, so I would have a useful working generator, but I don't think that's a practical option, not least because I cannot see how the alternator connects to the engine here: there doesn't seem to be any way in to unbolt anything. :?
Silly idea anyway.

This type of alternator generally only has one bearing in the alternator itself, at the brush end. The armature shaft is usually centre bolted to the tapered engine shaft and uses the engine crank bearing as its other means of support. So unless you wnat to make a bearing plate they are not much use when separated.

Woodsman wrote:I have Operating and Spares Manual and also Overhaul Manual if needed.

If they're digitised and can be emailed, then that would be very helpful, thank you.

blue cat wrote:This type of alternator generally only has one bearing in the alternator itself, at the brush end. The armature shaft is usually centre bolted to the tapered engine shaft and uses the engine crank bearing as its other means of support. So unless you wnat to make a bearing plate they are not much use when separated.

Ah, now I understand... at least to a point: I don't see how it is bolted to the taper. Maybe I've just misunderstood. Doesn't matter though, as I think it had best stay where it is, at least until such a time as the engine is deemed irretrievably broken, which doesn't seem a very likely prospect.

as Blue Cat has said its centre bolted, the two shafts come together and there maybe a long bolt that is put in the other end of the hollow generator shaft to then screw into the crank hence centre bolted.

maryalice wrote:
as Blue Cat has said its centre bolted, the two shafts come together and there maybe a long bolt that is put in the other end of the hollow generator shaft to then screw into the crank hence centre bolted.

That was what I understood it to mean, but I don't think the alternator has a hollow shaft. I'm reasonably sure I've seen this end of it...
I may check later.

Hairyloon wrote:

Woodsman wrote:I have Operating and Spares Manual and also Overhaul Manual if needed.

If they're digitised and can be emailed, then that would be very helpful, thank you.

Email sent.

Hairyloon wrote:I don't think the alternator has a hollow shaft...

Ok, I was wrong.

So, having gone there, I'm now thinking that I should pull it all apart for reconditioning, but there doesn't seem to be enough nut there to get a spanner on, nor enough gap to get a socket in.



The face of the nut seems a bit odd as well, but not in a way that I can get a picture of it, nor easily describe...
I'll have another look and come back later...

Use a box spanner or do you have a lathe to turn down a cheap socket.

Maryalice

maryalice wrote:Use a box spanner or do you have a lathe to turn down a cheap socket.

I don't think there is room even for that...
I'll try to get e picture head on later.

Ok, not a great photo. Sorry, it's a bit gloomy in the workshop.



It looks to me as if it isn't central: the nut is up a bit, and the points of the nut are practically touching the sides.

I don't know what's going on across the centre on that face of the nut: it looks like a pair of shallow cuts up and down at a shallow angle, almost as if trying to take a slice off the face.
Could that be some kind of sleeve, that needs to somehow be prised out?
That won't be easy, and I'm not convinced, but I don't have any other ideas yet.

Go to here https://www.ebay.co.uk/itm/203751585779?hash=item2f708a77f3:g:CCYAAOSwTd9fV0jY&amdata=enc%3AAQAIAAAA8JmQ9pSoKcmmaXi1CABE34TiiSh5m7wvN6XzrA%2Ft%2Bv3ued%2BKw717Nwm7lItzXHe0JcAbF2i%2B6uNFtE3tr5eoSWBZCblt%2BYmO%2BXxoZ%2B2CSLu99hLho%2B8vVynkuGZUIB6THM8sEf2tJku3lXmYBNts5vUKWMJ5hYSUWNvvIxtzvikd89rMS63flMsep%2BGkJnDdpywHUTNUJobVZw3TKdqQlJ5qMvwhbMa0f7d9rXsg5dYrpJLLy8cYr%2Bf2EOtSaLNR0J%2BIYcwkSSPpILwMwHRwYoiC0mAunfgarbtpcVG%2F1ajqWq4Odp8wgF3TLjC8Ecb%2B%2Fw%3D%3D%7Ctkp%3ABFBM7tSaifJh
and you will see your self locking nut.
I think that behind your nut is a self centering washer and I still believe a socket or box spanner suitably modified will undo it and if you want to be brutal a small chisel 1/4" blade will undo it.

Maryalice

maryalice wrote:Go to here https://www.ebay.co.uk/itm/203751585779?
and you will see your self locking nut.

Aha, so that is what it is... except that I think mine is not M6.

I think that behind your nut is a self centering washer and I still believe a socket or box spanner suitably modified will undo it and if you want to be brutal a small chisel 1/4" blade will undo it.

I'm held up by a rather basic problem: I've not had to touch any Whitworth nuts for a long time, so that particular box of spanners is resisting my will to find it...

the ebay link is just to show you what it is, have you measured the nut across the flats.

Maryalice

maryalice wrote:the ebay link is just to show you what it is...

I knew that. I was just messing.

have you measured the nut across the flats.

No... I suppose I could go do that now.

ETA: I make it 12.7mm ±0.1