The Spares Company
Club Shop/Regalia
Parent Website
Contact Officials
Machine Registrar
Club Secretary
Membership Secretaries
MPH Editor and Forum Administrator.
Section Newsletters
Technical Databases
Photos
Home
What's new
Latest activity
Forums
New posts
What's new
New posts
Latest activity
Information
Bike Modifications
Machine Data Services
Manufacturers Manuals
Spare Parts Listings
Technical Diagrams
Whitakerpedia (Vincent Wiki)
The Club
MPH Material Archive
Flogger's Corner
Obituaries
VOC Sections
Local Sections
Local Section Newsletters
Miscellaneous
Club Assets
Club History
Club Rules
Machine Data Services
Meeting Documents
Miscellaneous
Essential Reading
Magazine/Newspaper Articles/Letters
Adverts and Sales Brochures
The Mighty Garage Videos
Bikes For Sale (Spares Company)
Log in
Register
What's new
New posts
Menu
Log in
Register
Install the app
Install
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Chinamo over charging.
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="James B" data-source="post: 109243" data-attributes="member: 3919"><p>I had a similar experience sorting out the charging: a miller regulator modified to use an electronic regulator</p><p></p><p>I ended up making a 3 channel volt meter so that I could see the voltage at battery, armature and field coil all at the same time.</p><p>[ATTACH]28539[/ATTACH]</p><p></p><p></p><p>You’d expect a fully charged battery to be around 6v ish, and the armature voltage to go up to around 7.2 ish</p><p></p><p>When the bike is not running, both the armature and field voltages should be zero, otherwise the regulator is allowing the battery to be discharged</p><p></p><p>At idle, the field coil will be driven by the battery voltage and the armature will be at whatever is being generated. Will be lower than the battery voltage</p><p></p><p>As the engine revs rise the armature volts will rise. The regulator will vary/reduce the field coil voltage to limit the armature voltage to the regulation level of approx 7.5v</p><p>The voltage at the battery will also rise to this regulation voltage, and charging occurs</p><p></p><p></p><p>Common faults from regulators include:</p><p>Field coil not driven so no or little armature output and poor or no charging. Magnetism remaining in the dynamo will usually result in some output and this is what the regulator uses to detect the bike is running - so flashing is important</p><p>Field coil always driven and not regulated. Results in overcharging</p><p>Field and armature not disconnected when engine not running. Results in battery discharged through dynamo over time. Often means a deeply discharged battery - which may not be possible to resurrect</p><p></p><p>On mine, I diagnosed the lack of disconnection when not running. It might have been overcharging as well</p><p></p><p>The meters came from eBay and around £10 for the 3. I’d encourage anyone with dynamo charging worries to make one of these. It allows understanding of exactly what is going on. It’s all too easy to chase around stuff that is working just fine</p><p></p><p>Change the voltages as appropriate if you have decided to run a 12v system. I’ve retained a 6v configuration at least for now. I’m using a dvr2 as well, which can be configured either way</p></blockquote><p></p>
[QUOTE="James B, post: 109243, member: 3919"] I had a similar experience sorting out the charging: a miller regulator modified to use an electronic regulator I ended up making a 3 channel volt meter so that I could see the voltage at battery, armature and field coil all at the same time. [ATTACH alt="image.jpg"]28539[/ATTACH] You’d expect a fully charged battery to be around 6v ish, and the armature voltage to go up to around 7.2 ish When the bike is not running, both the armature and field voltages should be zero, otherwise the regulator is allowing the battery to be discharged At idle, the field coil will be driven by the battery voltage and the armature will be at whatever is being generated. Will be lower than the battery voltage As the engine revs rise the armature volts will rise. The regulator will vary/reduce the field coil voltage to limit the armature voltage to the regulation level of approx 7.5v The voltage at the battery will also rise to this regulation voltage, and charging occurs Common faults from regulators include: Field coil not driven so no or little armature output and poor or no charging. Magnetism remaining in the dynamo will usually result in some output and this is what the regulator uses to detect the bike is running - so flashing is important Field coil always driven and not regulated. Results in overcharging Field and armature not disconnected when engine not running. Results in battery discharged through dynamo over time. Often means a deeply discharged battery - which may not be possible to resurrect On mine, I diagnosed the lack of disconnection when not running. It might have been overcharging as well The meters came from eBay and around £10 for the 3. I’d encourage anyone with dynamo charging worries to make one of these. It allows understanding of exactly what is going on. It’s all too easy to chase around stuff that is working just fine Change the voltages as appropriate if you have decided to run a 12v system. I’ve retained a 6v configuration at least for now. I’m using a dvr2 as well, which can be configured either way [/QUOTE]
Insert quotes…
Verification
What was Mr Irving's Christian Name?
Post reply
Home
Forums
Forums: Public Access
Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Chinamo over charging.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top