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KHA 500 Dynamo E3L
Posted: Sun Dec 26, 2021 8:02 pm
by w.richard
Hello!
I have a problem with my Ariel KHA 500 Dynamo. Maybe someone can help me. The Lucas Dynamo E3L commutator coils are connected with each other coils when i measure with the multimeter. Is that correct or is there a short circuit in the winding?
Walter Richard
Re: KHA 500 Dynamo E3L
Posted: Sun Dec 26, 2021 8:22 pm
by will_curry
The commutator segments should all be electrically connected but isolated
from the body of the armature. The resistance of the coils is low and difficult
to distinguish from a short circuit without specialist equipment. Indeed Lucas
recommended testing armatures by substitution.
What is wrong with your charging circuit?
There is a good section on this forum about testing dynamos which is well
worth reading.
The KHA is an engine I've admired for a long time and never managed to own.
How do you get on with it?
Re: KHA 500 Dynamo E3L
Posted: Sun Dec 26, 2021 8:24 pm
by will_curry
The link to the dynamo testing section is:
viewtopic.php?f=8&t=189
Re: KHA 500 Dynamo E3L
Posted: Mon Dec 27, 2021 6:34 am
by w.richard
Good morning from Austria,
the E3L Dynamo does not provide any voltage, only approx. 0.15 volts. Now i dismantled it and saw that the commutator gaps are full with dust... Brushes are in a good condition.
I cleaned the commutator and now I will test the dynamo with your instructions that you sent me.
The KHA ist my first vintage motorcycle, for me it's very good... I bought it in the Netherlands.
Sorry for my bad English, i have to usw the Google translate mostly