Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models
by ULC Soulagent » Sun Nov 03, 2019 5:06 pm
Toddy wrote:Try another Wassell first
mr Tambs getting an order soon
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by Fast n Furious » Sun Nov 03, 2019 5:16 pm
assuming its a stator with 2 yellow wire coming out of it, use a multi-meter set to 200VAC to measure the AC output from the magneto stator. If this seems ok when revved out, then measure the output from your rectifier/ regulator (Wassel) which should read between 13.5-14.0VDC.
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by ULC Soulagent » Sun Nov 03, 2019 6:17 pm
Fast n Furious wrote:assuming its a stator with 2 yellow wire coming out of it, use a multi-meter set to 200VAC to measure the AC output from the magneto stator. If this seems ok when revved out, then measure the output from your rectifier/ regulator (Wassel) which should read between 13.5-14.0VDC.
Don’t have 200vac on my meter ( only 750 & 1000)
on the 1000 setup the Stator yellow wires are showing only 11v, when connected to the wassel there is nothing even when the battery is connected
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by ULC Soulagent » Sun Nov 03, 2019 6:19 pm
Gonna have too wait as Mr Tambs is on hols and for some strange reason SLUK shop has all of Tambs products pulled
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by coaster » Sun Nov 03, 2019 7:11 pm
ULC Soulagent wrote:Fast n Furious wrote:assuming its a stator with 2 yellow wire coming out of it, use a multi-meter set to 200VAC to measure the AC output from the magneto stator. If this seems ok when revved out, then measure the output from your rectifier/ regulator (Wassel) which should read between 13.5-14.0VDC.
Don’t have 200vac on my meter ( only 750 & 1000)
on the 1000 setup the Stator yellow wires are showing only 11v, when connected to the wassel there is nothing even when the battery is connected
That does suggest a stator problem, have you checked for any bad soldered joins on the stator and that to wires aren't pinched and shorting behind the stator? You should read around an ohm or so across the lighting coils.
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by MickYork » Sun Nov 03, 2019 8:21 pm
Have you changed the meter to dc when checking the Wassell output ? variable ac in, regulated dc out
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by Fast n Furious » Sun Nov 03, 2019 9:15 pm
As Coaster advised, Do a resistance check across both yellow wires and also do an insulation check from any yellow wire and the engine casing.
If the Wassel is short circuit, it will drag down any measurement of the AC "in" value. So disconnect the yellow wires from the regulator and then connect your meter to these wires and set the AC 750V range.
Start the engine.
When revved out you should see over 100VAC on this open circuit connection.
A very low reading would suggest that both yellow wires are nipped to earth somewhere forming a low resistance short circuit.
Negligible reading would suggest an open circuit coil or wire.
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by ULC Soulagent » Sun Nov 03, 2019 9:48 pm
MickYork wrote:Have you changed the meter to dc when checking the Wassell output ? variable ac in, regulated dc out
Unsure MickYork, I’ll take a pic of meter tomorrow and post it up and go from there
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by ULC Soulagent » Sun Nov 03, 2019 9:51 pm
Fast n Furious wrote:As Coaster advised, Do a resistance check across both yellow wires and also do an insulation check from any yellow wire and the engine casing.
If the Wassel is short circuit, it will drag down any measurement of the AC "in" value. So disconnect the yellow wires from the regulator and then connect your meter to these wires and set the AC 750V range.
Start the engine.
When revved out you should see over 100VAC on this open circuit connection.
A very low reading would suggest that both yellow wires are nipped to earth somewhere forming a low resistance short circuit.
Negligible reading would suggest an open circuit coil or wire.
I’ll check that out tomorrow FnF
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by Meds » Mon Nov 18, 2019 9:59 am
Did you manage to sort it out?
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by ULC Soulagent » Mon Nov 18, 2019 5:36 pm
Nearly there Meds, lack of garage space and crap weather been a hindrance. Stator is fine, looking like wassel too Blame
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by Meds » Mon Nov 18, 2019 6:22 pm
Good news the stator is ok
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by Meds » Fri Feb 07, 2020 8:02 pm
Got round to checking an unloaded standard electronic type stator converted to operate a DC system
60-75v AC at tickover
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by dickie » Fri Feb 07, 2020 10:19 pm
Simple test.
Measure battery voltage.
Start bike.
Rev to 3000rpm (ish)
Measure battery voltage
If the battery voltage is higher with motor running, then that's good. If it's lower, then it's bad, in other words, not charging.
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by ULC Soulagent » Fri Feb 07, 2020 11:13 pm
dickie wrote:Simple test.
Measure battery voltage.
Start bike.
Rev to 3000rpm (ish)
Measure battery voltage
If the battery voltage is higher with motor running, then that's good. If it's lower, then it's bad, in other words, not charging.
Cheers Dickie
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by ULC Soulagent » Fri Feb 07, 2020 11:15 pm
Meds wrote:Got round to checking an unloaded standard electronic type stator converted to operate a DC system
60-75v AC at tickover
Good too know Meds
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by Meds » Sat Feb 08, 2020 2:05 am
ULC soul agent
What was the fault in the end?
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by ULC Soulagent » Sat Feb 08, 2020 8:18 am
Meds wrote:ULC soul agent
What was the fault in the end?
Hi Meds,
Too be honest I ain’t got a foggy idea where the fault lies, have bought a scootronics stator n wassel n new hi power cdi stuff that I’ll be fitting soon. Like I said electrics ain’t one of my strong points on anything
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by dickie » Sun Feb 09, 2020 2:02 pm
Meds wrote:Got round to checking an unloaded standard electronic type stator converted to operate a DC system
60-75v AC at tickover
What do you mean when you say unloaded? Were both yellow wires open circuit?
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by ULC Soulagent » Sun Feb 09, 2020 4:36 pm
This is my tester, not sure if it’s the right Type
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