The BSA A7-A10 Forum

Technical => Lucas, Electrical, Ignition => Topic started by: roadrocket.chris on 05.10. 2018 12:33

Title: voltage control
Post by: roadrocket.chris on 05.10. 2018 12:33
can anyone on the forum tell me how to check or test an electronic voltage control,
Title: Re: voltage control
Post by: RichardL on 05.10. 2018 12:53
You didn't say what regulator you have, but you might want to look here:

https://drive.google.com/file/d/1K3MFDGK2c-naZ3h2JjtChaxHzhb7Litu/view?usp=drivesdk

Richard L.
Title: Re: voltage control
Post by: bsa-bill on 05.10. 2018 14:10
Whatever make or model you have, first test the dynamo is giving volts, test the battery (charge if needed and refit) then start bike (reasonable tickover) watch ammeter, switch on all lights, ammeter should dive towards minus. rev the bike and the ammeter should rise to over 0 towards plus, after a while it may/will settle on 0 given a good battery.
Title: Re: voltage control
Post by: Black Sheep on 05.10. 2018 14:35
One thing I discovered last week on 2 different bikes with electronic voltage regulators is that if the battery is flat or disconnected you get no dynamo output. Electronic voltage regulators need a battery in good order to allow them to bring the dynamo on line.
With a mechanical regulator, the dynamo will come on line and power the lights in the absence of a battery.
Title: Re: voltage control
Post by: roadrocket.chris on 05.10. 2018 17:32
dynamo is giving up to 20 volts i will try charging the new battery as it had gone flat i was used to the mechanical control which worked with a flat battery  hope it works,
Title: Re: voltage control
Post by: LJ. on 05.10. 2018 17:59
Good advice from Bill... I also find what is helpful, and that is I have fitted on all my bikes, an electronic battery status monitor from AO Services (Alan Osbourne) The old type voltmeter obviously wont show any reading if battery is correct and  there is no load on the battery, however the electronic device will show green if there is a charge indicating that dynamo is working correctly, it'll show a fast flashing red if charge output is too much or a slow flashing red if battery is very low while engine is off. Well worth fitting in my opinion.
Title: Re: voltage control
Post by: Greybeard on 05.10. 2018 19:03
Good advice from Bill... I also find what is helpful, and that is I have fitted on all my bikes, an electronic battery status monitor from AO Services (Alan Osbourne) The old type voltmeter obviously wont show any reading if battery is correct and  there is no load on the battery, however the electronic device will show green if there is a charge indicating that dynamo is working correctly, it'll show a fast flashing red if charge output is too much or a slow flashing red if battery is very low while engine is off. Well worth fitting in my opinion.
I believe that gizmo is the thing I have inside the headlamp cowl, stuck to the side of my ammeter so I can see what's happening, charge-wise, at night. I've been recommending these devices for a couple of years.
Title: Re: voltage control
Post by: LJ. on 05.10. 2018 19:25
Quote
I believe that gizmo is the thing I have inside the headlamp cowl,

Hey, what a good idea to hide it inside the headlamp cowl.
Title: Re: voltage control
Post by: Greybeard on 05.10. 2018 20:54
Quote
I believe that gizmo is the thing I have inside the headlamp cowl,

Hey, what a good idea to hide it inside the headlamp cowl.

Come on, quote the rest of the sentence!
Title: Re: voltage control
Post by: Rookie_V#60 on 05.10. 2018 21:30
Can't resist,   *eek* have invested € 2.36 for a voltmeter (for battery control)
in addition to the ammeter the ignition switch and my load indicator LED.
Alreadiy at kick start, there is a significant increase in the voltage
Title: Re: voltage control
Post by: coater87 on 05.10. 2018 23:56
 Your headlight looks a little like R2D2.

 Lee
Title: Re: voltage control
Post by: Rookie_V#60 on 06.10. 2018 07:51
Thank you C3PO!
Title: Re: voltage control
Post by: roadrocket.chris on 07.10. 2018 17:28
black sheep gave me the answer i charged the battery and it worked they did not tell you this with the product thanks everyone,
Title: Re: voltage control
Post by: roadrocket.chris on 07.10. 2018 17:31
rookie where did you buy this voltmeter?
Title: Re: voltage control
Post by: Rookie_V#60 on 07.10. 2018 18:42
 Naturally on Evil batch :
https://www.ebay.de/sch/sis.html?_nkw=Charge+Level+Rot+Blau++Indicator+Voltmeter+for+6%2F12%2F24%2F36%2F48V+Lead-acid+Battery&_id=152830297340&&_trksid=p2060353.m2749.l2658