A A A
Avatar

Please consider registering
Guest

Search

— Forum Scope —






— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

Register Lost password?
sp_Feed sp_PrintTopic sp_TopicIcon
D14 12V again
Avatar
BantamBaz
Reading Berkshire
Top Gear User
Club Member
Forum Posts: 137
Member Since:
September 15, 2018
sp_UserOfflineSmall Offline
1
March 27, 2021 - 11:42 pm
sp_Permalink sp_Print

Good morning,

I've  used your ** Please log in to view ** to convert my D14 so thanks for them.

I bought an ebay reg/rec but am not happy with the output that runs at 14.7 or there abouts. I'd  rather see 14.2 as a maximum, so an economic recommendation would be welcomed. 

I see you recommend VWP for switches etc & wonder if you have any experience of their regulator.

Thanks.

Barrie

Avatar
cocorico
Central France
Top Gear User
Site Member
Forum Posts: 3465
Member Since:
June 23, 2013
sp_UserOfflineSmall Offline
2
March 28, 2021 - 8:11 am
sp_Permalink sp_Print

 14.7V is quite normal for a regulator output when giving a good charge to a  battery.

Avatar
BantamBaz
Reading Berkshire
Top Gear User
Club Member
Forum Posts: 137
Member Since:
September 15, 2018
sp_UserOfflineSmall Offline
3
March 28, 2021 - 8:49 am
sp_Permalink sp_Print

Thanks Bob,

Having been accociated with cars & 14.2 as a maxim during my working life anything approaching 15 suggests cooked batteries & blown bulbs, something I'm a bit wary of.

Cheers.

Barrie. 

Avatar
sunny
Norfolk
Top Gear User
Club Member
Forum Posts: 1807
Member Since:
January 9, 2013
sp_UserOfflineSmall Offline
4
March 28, 2021 - 9:20 am
sp_Permalink sp_Print

im   was   told   wen  at  school   [   a batery  is  like  a 1/2  emty  bottal     it  take s  the charge  rate  it has  room for   ]  so  if  you  have  just   started  your  car  and  used   a lot  from it  ,. it will   tack   a lot until   its  foul   and  then   will   not   wont   wot it  dont   wont  and  then tern   the  chage  rate  given   in to     HEAT     , so a  good   regulator   will   respond  by lowering  the charge  rate    so  the  batery  dont  get  cooked   and thats   wy  i   like   to      keep  on  the   old   Bantams   6  VOLT    DRIVER  regulated     elecTRICKS    

Avatar
BantamBaz
Reading Berkshire
Top Gear User
Club Member
Forum Posts: 137
Member Since:
September 15, 2018
sp_UserOfflineSmall Offline
5
March 28, 2021 - 10:06 am
sp_Permalink sp_Print

Thanks Sunny, 

That's the bit that worries me. The battery is a new AGM with 12.5 volts or so & there's very little draw on that with the engine running but it still has a higher than I would like voltage that I would have expected to reduce quickly.

Avatar
sunny
Norfolk
Top Gear User
Club Member
Forum Posts: 1807
Member Since:
January 9, 2013
sp_UserOfflineSmall Offline
6
March 28, 2021 - 10:25 am
sp_Permalink sp_Print

sorry   to  say   you  will  have  to  trust    the  REG/REC  mackers      as   to  the  baterys  capaserty    [  AMP hours &  Volts    ]  if  you  go  on the 

 12  volt   rout         ,.  its  a  shame   I  DONOT        to  check  the     charge  rate   [  fully charge  it  befor   fiting     ]    them   check it  to  me   if  

its  moor   than   12.8    at   being   charged     id  have  to  keep  an  eye  on  it  

Avatar
mikef
Chatham Kent
Club Technical Advisor
Committee
Forum Posts: 987
Member Since:
September 30, 2011
sp_UserOfflineSmall Offline
7
March 28, 2021 - 10:42 am
sp_Permalink sp_Print

Hi.
    I have been asked to check the voltage output of voltage regulators in the past and 14.7V has been a common voltage that I have seen with no load on the circuit. It does drop when the lights are in use.
I do not know a lot about these new types of battery, by new I mean anything other that the old type lead acid ones.
Some require special smart charge techniques.
I have just searched for some info on AGM batteries and it seems that they are OK with a charging voltage of 14.6-14.8V.
So would conclude that for an AGM battery 14.7V is good.
It would be worth doing a google search, I found the Yuasa site informative.
Mike.

Avatar
cocorico
Central France
Top Gear User
Site Member
Forum Posts: 3465
Member Since:
June 23, 2013
sp_UserOfflineSmall Offline
8
March 28, 2021 - 10:46 am
sp_Permalink sp_Print

AGM batteries are sensitive to overcharging, so a standard regulator may not be suitable, though I have not experienced any problems myself - though the AGM batteries I have used tend to be high capacity, so may be able to absorb higher charge rates better.

Check batteryuniversity.com and ** Please log in to view **

Avatar
mike p5xbx
E-Sussex
Top Gear User
Site Member
Forum Posts: 1665
Member Since:
June 15, 2012
sp_UserOfflineSmall Offline
9
March 28, 2021 - 4:22 pm
sp_Permalink sp_Print

undercharging and leaving a battery partially discharged and unused is just as bad as overcharging
if you use your bike/car every day and do a reasonable mileage then 14.2/14.5 volt is fine
if not, all the available data says charge to 14.7 volt
and recharge when battery drops below 12.5 volt
a really good battery will read 12.8v or more after charging>sitting for 48hours

AGM.jpg

sp_PlupAttachments Attachments

D? - D10- D14 Bantams 350 AJS -500 Triumph http://bsanotru.....lfire.com/

Avatar
KC1961
Central Scotland
Second Gear User
Club Member
Forum Posts: 32
Member Since:
May 20, 2018
sp_UserOfflineSmall Offline
10
March 28, 2021 - 5:18 pm
sp_Permalink sp_Print

I went down the 12V route last year and I fitted a small digital volt meter at the same time. I was a bit concerned when it was reading 14.7V from not that many rpm above idle. I just run with my lights on (or heated grips in winter, ha-ha) but it's good to see that 14.7 is okay.

Avatar
BantamBaz
Reading Berkshire
Top Gear User
Club Member
Forum Posts: 137
Member Since:
September 15, 2018
sp_UserOfflineSmall Offline
11
March 28, 2021 - 6:36 pm
sp_Permalink sp_Print

Thanks everyone,

The data list from Mike is reassuring & I'll  copy it if that's OK.

I must say I'm  still a bit wary. I'll  see how it goes.

Barrie.

Avatar
Lone Wolf
The Black Country
Top Gear User
Club Member
Forum Posts: 1365
Member Since:
January 24, 2012
sp_UserOfflineSmall Offline
12
March 28, 2021 - 9:21 pm
sp_Permalink sp_Print

BantamBaz said
Good morning,

I've  used your ** Please log in to view ** to convert my D14 so thanks for them.

I bought an ebay reg/rec but am not happy with the output that runs at 14.7 or there abouts. I'd  rather see 14.2 as a maximum, so an economic recommendation would be welcomed. 

I see you recommend VWP for switches etc & wonder if you have any experience of their regulator.

Thanks.

Barrie  

Wotcha.

Glad you found it useful.

I've used reg/rec units from VWP - they've always done the job.

I think the last one I bought was from Rex. . . .  and that was only 'cos I was ordering some Bantam bits at the time.

I did buy a cheap unit from an Indian retailer on eBay - it worked well for about two years, then decided that it would up the charge voltage to over 16 volts . . . . changed it for a 'proper' one, and no trouble since.

^..^

Avatar
BantamBaz
Reading Berkshire
Top Gear User
Club Member
Forum Posts: 137
Member Since:
September 15, 2018
sp_UserOfflineSmall Offline
13
April 2, 2021 - 11:14 pm
sp_Permalink sp_Print

Evening,

Daft as it may seem, it has just crossed my mind that I just assumed I should fit a 4 wire reg/rec when I converted to 12 volts. Was I right or am I having high output voltage because I should have used a 3 wire device?

Put me out of my misery  please some one.

Thanks.

Avatar
cocorico
Central France
Top Gear User
Site Member
Forum Posts: 3465
Member Since:
June 23, 2013
sp_UserOfflineSmall Offline
14
April 3, 2021 - 7:44 am
sp_Permalink sp_Print

2 ac in, + and - out = 4. Unless the casing is connected to one pole, then it might be 3. Check what polarity it is designed for, of course. Then there are the 5 lead ones...

It has all been discussed frequently before.

Avatar
Lone Wolf
The Black Country
Top Gear User
Club Member
Forum Posts: 1365
Member Since:
January 24, 2012
sp_UserOfflineSmall Offline
15
April 7, 2021 - 11:55 am
sp_Permalink sp_Print

Wotcha.

Four wire reg/rec is correct.

Two wires of the same colour for the AC in from the alternator   ( Wipac alternator - - - join the orange and yellow for one wire and the green as the other )

Red for positive out

Black for negative out.

 

Earth either red or black, depending on whether you want positive or negative earth.

^..^

Avatar
not henpecked
Near Junction 11 of M42 Leicestershire
Top Gear User
Club Member
Forum Posts: 276
Member Since:
February 7, 2013
sp_UserOfflineSmall Offline
16
April 7, 2021 - 8:57 pm
sp_Permalink sp_Print

Hmm

Cocorico has mentioned 5 wire RR's. The one I fitted to my B175 is 5 wire which I bought from Rex. It works perfectly OK.

So for all you electrical/electronic experts out there, what's the subtle difference......?

B175, on the road. Honda XBR 500, and ....... Suzuki Burgman 200 scoot! Nicknamed "The hair dryer" - by me I hasten to add; & great storage under the seat when you get to your destination.

Avatar
cocorico
Central France
Top Gear User
Site Member
Forum Posts: 3465
Member Since:
June 23, 2013
sp_UserOfflineSmall Offline
17
April 7, 2021 - 9:08 pm
sp_Permalink sp_Print

Apart from one wire, have a look through all the previous posts. Please.

Avatar
BantamBaz
Reading Berkshire
Top Gear User
Club Member
Forum Posts: 137
Member Since:
September 15, 2018
sp_UserOfflineSmall Offline
18
April 17, 2021 - 9:08 pm
sp_Permalink sp_Print

Thanks everyone.

A bit late in saying so but thanks all for your inputs.

Barrie.

Forum Timezone: Europe/London

Most Users Ever Online: 223

Currently Online: Nick_S, derek50
13 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

cocorico: 3465

Cornish Rooster: 3109

bart: 2691

Blue Heeler: 2540

David Dale: 2346

Sprung Chicken: 2292

Piquet: 1975

Mags 1: 1853

sunny: 1807

jess steele: 1672

Newest Members:

Boneidle

Forum Stats:

Groups: 9

Forums: 48

Topics: 11261

Posts: 99724

 

Member Stats:

Guest Posters: 1433

Members: 3269

Moderators: 0

Admins: 3

Administrators: Bantam-Super, JMD, Stoo63