Britbike forum

Classic British SparesKlempf British PartsBaxter CycleBritBike Sponsor SteadfastCyclesThe Bonneville ShopLowbrow CustomsGirling Classic MotorcycleLucas Classic MotorcycleHepolite PistonsIndustrial tec supply Classic Bike Parts Cheshire

Upgrade Your membership! Premium Membership Gold Membership Vendor Membership

New Sponsor post
New FAQ post
Photos on private message
by Mal Marsden - 06/16/22 7:00 pm
Manuals on DVD - Buy 4 for 3
All 4 DVD Manual
Member Spotlight
Morgan aka admin
Morgan aka admin
Sävedalen, Sweden
Posts: 2,714
Joined: July 2001
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Top Posters(30 Days)
reverb 88
Allan G 56
kevin 50
Top Likes Received (30 Days)
Cyborg 33
Newest Members
Jim Harris, Cuppy, budpotter, Mark Sharp, Ian Scotland UK
12,160 Registered Users
Who's Online Now
4 members (Hugh Jörgen, Noe, JubeePrince, bsalloyd), 22 guests, and 16 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums35
Topics76,310
Posts772,624
Members12,160
Most Online151
May 8th, 2022
Thread Like Summary
KimT110, kommando
Total Likes: 3
Original Post (Thread Starter)
#852288 06/24/2021 5:52 AM
by KimT110
KimT110
Hi Forum,

i am getting confused about the electrics on a T6 1965 the I am looking to buy, and hope that some of you can enlighten me:-)

The bike has been "converted into a bonneville look alike. i.e the Nacell has been removed and a smaller US tank mounted.
Seller says it is a 6 volt bike, and here I get confused.

As far as I know the 6T in 65 had a 12 v system with a Zener under the seat.
In this case I expect the Zener would be used to regulate the voltage?

Now the Zener has been removed and I do not see any other means of voltage / charging control, and there is one 6 v battery mounted.

I believe that the 65 Bonnevilles had a 6 v system.

Looking in the spares catalog it looks like both the 12 v and 6 v systems of the year uses a RM19 stator.

questions

can it really be the same stator in both systems?
how is the charging / voltage regulated in the two systems?
also it seems that at least the 6 v system currently on the bike can run with a disconnected battery?
What is the benefits of the seller having converted the system to 6V?
I do have Photos of the schematics , but I am not able to attach photos into this message.



Anyone who can help me understand these differences?

BR
Barthol
Liked Replies
#852295 Jun 24th a 08:05 AM
by gavin eisler
gavin eisler
The 12 V set up uses a Zener Diode, much simpler wiring
The 6 V set up switches the alternator coils, and the switch has an Emergency setting for starting with a flat battery, this has a lot more wiring to the switch. it does not really regulate, just changes output to max with the lights on, its not great and will boil a battery if a lamp bulb fails since the lamps loads are needed to balance the demand/ output.
2 members like this
#852324 Jun 24th a 02:15 PM
by gavin eisler
gavin eisler
if you go to 12 V, and wish to run with Electronic ignition the 6Volt coils can remain, EI works better on twins with two 6 volt coils.
1 member likes this
British Cycle SupplyMorries PlaceKlempf British PartsBSA Unit SinglesPodtronicVintage MagazineBritBike SponsorBritish Tools & FastenersBritBike Sponsor






© 1996-2022 britbike.com
Powered by UBB.threads™ PHP Forum Software 7.7.5