voltage check

[terryj]

done wassell conversion
if i put multi meter onto the 2 yellow wires from the stator before connecting to wassell should i get a reading of 12 volts or more as i seem to be only getting about 3 at the headset so assume stator is kerput

ps did a continuaty test between 2 yellows and got a zero reading

[foremanbob]

have you connected everything up and you are getting a low reading on the RED coming from the Wassell?

Have you a battery or capacitor on the DC (RED) circuit

The wassell unit likes a little load on it... most I use a 33000uF electrolytic capacitor between red and ground

[grandpa]

Hi Terryj
A Battery is better IMHO.However, you can test the stator output by removing yellow wires to the wassell and connecting a car 55watt headlamp bulb to the two yellow wires and running the scooter.The bulb should shine brightly proving that the stator can handle a load (55W)Remember you will need a D.C horn
As I mentioned on a previous post a battery keeps the lights on if you have to push your machine home in the dark
Grandpa

[MickYork]

done wassell conversion
if i put multi meter onto the 2 yellow wires from the stator before connecting to wassell should i get a reading of 12 volts or more as i seem to be only getting about 3 at the headset so assume stator is kerput

ps did a continuaty test between 2 yellows and got a zero reading

have you set your multimeter to DC ? if it's on AC you'll get a low reading. If you are on DC then you are correct you should be getting over 14v when reving it, the meter needle or reading will be all over the place as that's what the regulator is for (to smooth the voltage and prevent it going too high).

Also when testing on DC make sure you have the leads the correct way round........

[terryj]

just checked and have got meter on dc so will try another stator
once i figure out which of the other 2 i have is the good 1

[MickYork]

out of interest try the meter on AC

[Nelly]

The yellow cables from the stator output AC voltage. If the meter is on DC it will give a false reading across the yellows.

[terryj]

right back to the shed dont you just love electrickery

[Nelly]

right back to the shed dont you just love electrickery

[coaster]

If you measure across the 2 yellows on resistance you will only read about 1 ohm, this is due to there being relatively few turns of heavy vague copper wire on the coils. All quite normal, the headlamp bulb test is your best bet

[terryj]

done a c check across the yellows and getting 14 v plus and 13 v + on battery from wassel so i am going to assume a dead battery and replace that had a bad connection to battery and as i understand it once alarm batterys go flat they will not re charge

[coaster]

done a c check across the yellows and getting 14 v plus and 13 v + on battery from wassel so i am going to assume a dead battery and replace that had a bad connection to battery and as i understand it once alarm batterys go flat they will not re charge

Alarm batteries are just lead acid batteries with the electrolyte in a gel form, provided they aren't left discharged for weeks or months then they should recharge ok although a cheap auto charger might not be up to the job.

With the yellows disconnected from the wassel unit you should be reading well over 25 to 30 volts AC as the engine is revved, if not then there is something amiss with the stator or wiring connections.

[terryj]

it was 14 to 18 vots on tick over will try reving to double check
using a car battery charger and battery wont pick up on voltage its been flat for a while now

[Nelly]

Alarm batteries are very disposable things, they are really only designed as standby power for intruder and fire alarms, I replace loads of them. They are said to have a working life of 5 years in standby, but I've seen some that have never been touched for much longer.
I always find that once they have been completely discharged and left for a while they never seem to charge to their full potential again.
This is why I never used one on my bike.
They make a good option for the bikes though due to the fact they can be mounted in any orientation. Yuasa are by far the best available in my experience.