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Dim headlights! Its time to roll the dice and try something.

My J50 Deluxe headlight have always been poor. Getting the scooter home before dark,

Is a must!
j50_light_by-anthony1.jpg

There are several ways to fix dim headlights. One common method is to, re-magnetize

the flywheel, but some motors run excellent with dim lights.
Something else maybe going on with the electrical system.

When I think about it. All old motors have simple lighting systems. Wire rapped around

metal, passing by a magnet. That makes electric energy.
More wire, more energy. Simple! (I hope. haha :D )

Looking at Lambrettra’s 1960s two coil stator plate. The lighting coil, seems to have

less wire than 1970s coils.
j50_light_by-anthony2.jpg

On some old Ves-pa’s, the coils have more wire, and popped the 6 volt bulbs easy.
This could be the reason for some Lambretta coils having less wire at the time?

I remove the lighting coil and simply spliced in more wire. I added about 9 loops, of extra wire.
(I got the extra wire from an old coil in my junk pile ;) )
I didn’t do any calculation, I just filled in the extra space.
j50_light_by-anthony3.jpg

 

I didn’t use a vote meter either. If the added voltage pop’s the 6 volt bulb.
Its more than 6 volt! Simple logic. haha! :D

Fire-up the motor and test.
It worked!!!

j50_light_by-anthony4.jpg

9 extra loops of wire made the lights 40% brighter and didn’t pop the 6 volt bulb. I also added

a 12 volt regulator to the J’s lighting system, because I plan on adding more loops of wire,

to get the coils output up to 12 volt. (Note: I will be using a volt meter this time.)

This trick should work for LD’s as well. Some LD’s have the same type of two coil

stator plate with extra space to add more wire.
j50_light_by-anthony5.jpg

Anthony Armstrong J headlights trick.

 

 

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You could measure the resistance of the original coil and compare it to the resistance of your improved coil to get an idea of how much you've increased the capacity.

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I think Ming or Arf would be good guys to contact about this if you have any questions. This would be a good item for an article in the Specialist too.

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Hell yeah it would.  I already sent a suggestion along to our new Gazette editor to have a look at this thread.  Anthony always does nice write-ups.

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I get the feeling there is a trade off (between volts/current) that's getting missed somewhere.

 

I'd keep a close eye on potential heat problems. 

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I did a 40 mile ride, with no problems before I posted this trick.
Do you think the stator will heat up?
If there’s something I should check, let me know.
Thanks.

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I thought the stator work was impressive, but a 40 mile trip on a J 50, deluxe or not, now that is IMPRESSIVE.

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I did a 40 mile ride, with no problems before I posted this trick.Do you think the stator will heat up?

If there’s something I should check, let me know.

Thanks.

Honestly I don't know. You'd need to put an amp meter on the out put of the coil and see what's going on.

I'd think after a 40 mile haul with out letting the smoke out you should be ok.

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This is just a guess, but I think the extra winds simply made up for the reduction in magnetism caused by age.

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http://www.6pie.com/faradayslaw.php

 

Here is something to help.  Number of coil turns definitely directly affects the output voltage. 

 

Anthony, you built my Lambretta, and about a year after I bought it, I put one of those german 6 volt LED rear lights in.  The brightness of the headlight about doubled, and was also much more white compared to the yellow shade it was before.  Maybe someone can compile all the ways to increase brightness on a Lambretta for the Gazette?

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Swap out the speedo and festoon bulbs for LED's may give you a candles worth of extra light.

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I've mentioned it before, but just by fitting the correct wattage bulbs a 6 volt system works fine, the problem is people just accept something that is available and seems close, but 2w extra at the rear plus 6w or 7w at the front added to the recommended 12 v speedo which is probably .75w to 1w over too, and the system doesn't stand a chance.

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I was not able to find a correct tail light bulb for a 6v balanced system.  That is why I used the BGM LED system, which the German dudes designed to work with the balanced 6V system.  I was actually designing my own and it got expensive so I just purchased that and their voltage regulator. Saved me about $50 and a month of time.

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