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Re: Polarise Dynamo [Re: kngkong] #364888
03/26/11 12:59 am
03/26/11 12:59 am
Joined: Jul 2009
Posts: 3,549
Vic. Australia
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Pete R - R.I.P. Offline
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Pete R - R.I.P.  Offline
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Joined: Jul 2009
Posts: 3,549
Vic. Australia
Any time you fiddle with the regulator box,its a good idea to dis-connect the battery first.
The best thing I've found to clean regulator points is a ground down hacksaw blade.Grind it thin,so it fits between the points.Grinding marks,running across the saw blade, act like a smooth file.
With the regulator points closed (normal condition),there should be almost no resistance between F and D regulator terminals.Disconnect F and D wires from the dynamo when you test this.If F and D wires are connected to the regulator,there should be almost no resistance between them.
When the regulator points open there will be resistance between F and D,somewhere about 50 ohm.

The regulator points will stay closed until the voltage at D equals 7.8V +/- 0.2V.
The cut-out relay will connect D output to the ammeter or battery,when voltage at D exceeds 6.5V +/- 0.2V .

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Re: Polarise Dynamo [Re: Pete R - R.I.P.] #364915
03/26/11 3:57 am
03/26/11 3:57 am
Joined: Oct 2009
Posts: 208
Wellington, NZ
K
kngkong Offline OP
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Posts: 208
Wellington, NZ
Thanks, Pete. Sounds like my regulator settings are way out.

Im going to try and adjust the regulator according to the workshop instructions.


1951 5T Speedtwin
Re: Polarise Dynamo [Re: kngkong] #364924
03/26/11 5:40 am
03/26/11 5:40 am
Joined: Oct 2009
Posts: 208
Wellington, NZ
K
kngkong Offline OP
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Wellington, NZ
wow, that was fun
fingers crossed, I think Im on my way

I adjusted the 'regulator' side of the regulator per the workshop instructions and now Ive got headlight when the fuse is out. I havent taken it for a ride yet but it also seems like Im getting some kind of charge to the battery. Going to do some more tests and see if I need to adjust the cut out.

this is what ive done so far



1951 5T Speedtwin
Re: Polarise Dynamo [Re: kngkong] #364934
03/26/11 7:49 am
03/26/11 7:49 am
Joined: Oct 2009
Posts: 208
Wellington, NZ
K
kngkong Offline OP
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Wellington, NZ
woohoo! just went for a ride and saw my ammeter go positive for the first time! It was actually a little unnerving to see it shoot up there. Running headlights and the ammeter would go between zero to about halfway positive.

Should there be anything I should be looking to make sure I dont over charge?

Going to test this more tomorrow when its daylight out, made it a little hard to see the ammeter at night.

I havent tested the cutout on the regulator yet.


1951 5T Speedtwin
Re: Polarise Dynamo [Re: ] #365049
03/26/11 11:45 pm
03/26/11 11:45 pm
Joined: Oct 2009
Posts: 208
Wellington, NZ
K
kngkong Offline OP
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Thanks, good to know

I think it was because my battery was pretty low.

I set the regulator so it would settle between 7.5 and 8 per the manual but Ill double check it and keep an eye on it


1951 5T Speedtwin
Re: Polarise Dynamo [Re: kngkong] #365188
03/27/11 5:39 pm
03/27/11 5:39 pm
Joined: Oct 2003
Posts: 11,140
North Georgia, USA
RF Whatley Offline
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RF Whatley  Offline
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North Georgia, USA
Originally Posted By: kngkong
I think it was because my battery was pretty low.


No, actually low battery makes the regulator kick in. In a sense, the Lucas dynmo-regulator system is a LOT more advanced than the alternator systems that took its place. Lucas motorcycle alternators simply charge all the time and can't cut back. Dynamo-regulator systems sense battery condition (over charge or under charge) and act accordingly. They simply can't supply enough power for modern lighting.


I highly suggest you ditch the mechanical regulator in favor of the Podtronic electronic version. Once the mechanical versions start having issues, they never give up. Podtronics offers 4 versions: 6V & 12V, positive and negative ground. If you are a stickler for detail, they are small enough to hide inside the stock Lucas cover.


The letters make very clear sense.
F - Field
A - Accumulator
D - Dynamo
E - Earth

You merely need to speak English to decipher. laughing

bigt


Don't hide 'em, Ride 'em !!

RF Whatley
Cornelia, GA

"Shop Boy" at Rodi British Bikes
Re: Polarise Dynamo [Re: kngkong] #365194
03/27/11 6:06 pm
03/27/11 6:06 pm
Joined: Dec 2006
Posts: 3,878
Massachusetts, U.S.A.
B
btour Online content
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Massachusetts, U.S.A.
Thanks RF,

Now accumulator = Regulator = Battery???


Bob, Lifetime bike: '71 T120R, bought in '71 at Ken Heanes, England.
Re: Polarise Dynamo [Re: RF Whatley] #365501
03/29/11 5:41 am
03/29/11 5:41 am
Joined: Oct 2009
Posts: 208
Wellington, NZ
K
kngkong Offline OP
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Posts: 208
Wellington, NZ
Thanks RF

I might take your advice
I would really like to get this original regulator working correctly but Im not totally confident in it at the moment and would regret if I hurt my generator. Ive ordered a solid state one for now and will see what kind of voltages I get our of it. That might give me a little more confidence in running the original one someday if I want without worry of burning anything out.


1951 5T Speedtwin
Re: Polarise Dynamo [Re: kngkong] #365609
03/29/11 8:37 pm
03/29/11 8:37 pm
Joined: Feb 2008
Posts: 4,142
New Jersey USA
Tridentman Online content

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New Jersey USA
Bob---accumulator is an old English term for battery.
HTH

Re: Polarise Dynamo [Re: kngkong] #365628
03/29/11 9:36 pm
03/29/11 9:36 pm
Joined: Dec 2006
Posts: 3,878
Massachusetts, U.S.A.
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btour Online content
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btour  Online Content
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Joined: Dec 2006
Posts: 3,878
Massachusetts, U.S.A.
Thanks Tridentman.

I like it. We should have kept it. smile My acumen is low.


Bob, Lifetime bike: '71 T120R, bought in '71 at Ken Heanes, England.
Re: Polarise Dynamo [Re: btour] #365653
03/30/11 12:54 am
03/30/11 12:54 am
Joined: Oct 2009
Posts: 208
Wellington, NZ
K
kngkong Offline OP
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Wellington, NZ
Just got mt solid state regulator in. Oddly the ammeter reads about the same as it did with the original Lucas regulator.

At idle it stays at zero, start riding and bringing up the revs it will level out at about +3 amps. With the headlight on riding it will stay about the same at +3 amps. I trust this regulator is doing what it should do so maybe my ammeter is off?


1951 5T Speedtwin
Re: Polarise Dynamo [Re: kngkong] #365690
03/30/11 7:05 am
03/30/11 7:05 am
Joined: Aug 2001
Posts: 7,028
scotland
triton thrasher Online content
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scotland
An electronic reg doesn't do anything a working electromechanical reg doesn't do.

If the needle of the ammeter is at zero when disconnected, that's good.

Idling with headlight on, the ammeter should show a discharge. rev it up and the needle should rise to zero or past zero to sho a charge.

If you have set the regulator to the correct 7V or whatever the book says with battery disconnected, it should not show a continuous 3A charge forever in use on the road: the indication should eventually sink back to zero as the battery gets charged.

Test it with an accurate ammeter, rather than the wayward ones fitted to bikes.

Last edited by triton thrasher; 03/30/11 7:06 am.

Amateur Loctite enthusiast.
Re: Polarise Dynamo [Re: triton thrasher] #365751
03/30/11 7:29 pm
03/30/11 7:29 pm
Joined: Oct 2009
Posts: 208
Wellington, NZ
K
kngkong Offline OP
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Joined: Oct 2009
Posts: 208
Wellington, NZ
Originally Posted By: triton thrasher
An electronic reg doesn't do anything a working electromechanical reg doesn't do.

Test it with an accurate ammeter, rather than the wayward ones fitted to bikes.


Yup, understood. Just thought it was interesting as my mechanical reg was probably working correctly after I adjusted it and that there must have been something else wrong in the system and I think I found it this morning.

Yes, would like to put a better meter on it.

I put a new 6v sealed battery in this morning and all seems happier. The prior battery was a non-sealed and if memory serves right didn't seem to want to charge much above 6v even when connected to the battery charger. I put the new one on which had a resting charge of about 6.3v and immediately the ammeter seemed to behave as you mention it should.

All seems good now. I figure Ill stick with the solid state reg just need to get it hidden. Don't want to take the guts out of my old "good" reg so ill have to look for another base.

Cheers guys!

Last edited by kngkong; 03/30/11 9:52 pm.

1951 5T Speedtwin
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