BSA Owners' Club Workshop Discussions

The BSA Workshop => Twins => Topic started by: Matt Brighton on 20 May, 2020, 09:17

Title: Can I use the bike without Regulator/rectifier ?
Post by: Matt Brighton on 20 May, 2020, 09:17
Hi

My DVR2 regulator  is away being tested and I would like to know if it would do any harm to use the bike for a short local trip  with the regulator disconnected ?

+ earth 6v

The battery is fully charged and brake bulb is led type so theres enough power to activate brake and horn. I won't be needing any lighting.

Thanks

Matt

Title: Re: Can I use the bike without Regulator/rectifier ?
Post by: idie on 20 May, 2020, 09:30
Yes you can, as with out the reg to energise the field windings in the dynamo it won't generate any current.
Title: Re: Can I use the bike without Regulator/rectifier ?
Post by: Matt Brighton on 20 May, 2020, 10:35
Thanks for that

Best news for a while - thanks  :D

I assumed the dynamo would be ok to run the spark without regulator ... but grateful for confirmation I won't "harm" anything else if I use it without the regulator connected in meantime until I refit the DVR2 .

Hoping to get it back from Dynamo Regulators soon after testing....

Thanks again

Matt


Title: Re: Can I use the bike without Regulator/rectifier ?
Post by: Nanonevol on 21 May, 2020, 01:59
Yes you can but:

Quote from: idie on 20 May, 2020, 09:30
Yes you can, as with out the reg to energise the field windings in the dynamo it won't generate any current.
Makes no sense at all.

A generator/dynamo generates electricity by an armature spinning inside a magnetic field.
The regulator converts AC to DC and limits the output to protect the battery and the electrical system.

With your regulator out I assume your entire charging system is disconnected.
Title: Re: Can I use the bike without Regulator/rectifier ?
Post by: Mark N on 21 May, 2020, 10:50
Just to add to (or try to avoid) confusion:
A dynamo generates DC. The regulator keeps this to the correct charging voltage.
With the regulator out of circuit (ie: all disconnected wires removed and insulated), the dynamo will continue to generate DC but this will not get used (disconnected wires) and will do no harm.
Title: Re: Can I use the bike without Regulator/rectifier ?
Post by: Matt Brighton on 22 May, 2020, 15:25
Thanks Mark

Matt