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cheltenham-sable
Joined: 05 Apr 2012 Posts: 22
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Posted: Tue Nov 20, 2012 8:36 pm Post subject: 1948 Alvis TA14 dynamo charging? |
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Just out of curiousity when driving the ammeater shows a reasonable charge the top of the gauge is 20amps some times the gauge looks like its almost stuck here and evan when on tick over after been at high revs but then all of a sudden it will come back down like when its on tick over and show 0 then show about 10-15amps when driving but if i have few revs on for quite while when driving its like it goes to top of the gauge 20amps then stays there for while?
Regards Tom |
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Phil - Nottingham
Joined: 01 Jan 2008 Posts: 1252 Location: Nottingham
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Posted: Tue Nov 20, 2012 11:38 pm Post subject: |
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Regulator adjustment/contacts sticking - what is the regulator model and what is car
May be a high resistance connection in the charging circuit or failing/dry battery
Not a good idea to use it like this though as may cook the battery or worse
Even 15a is too high if battery is fully charged _________________ Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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MVPeters
Joined: 28 Aug 2008 Posts: 822 Location: Northern MA, USA
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Posted: Wed Nov 21, 2012 2:02 am Post subject: |
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Correct, sticking points.
Disconnect the battery, fold a one pound note in half & pass it between the points to polish & clean them.
A ten bob note will work, but it takes twice as long.
Don't even think about using sandpaper or a file. _________________ Mike - MVPeters at comcast.net
2002 MINI Cooper 'S' |
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ukdave2002
Joined: 23 Nov 2007 Posts: 4105 Location: South Cheshire
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Posted: Wed Nov 21, 2012 8:56 am Post subject: |
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This particular fault is quite common in NOS control box's, caused by oxidation of the points over the many years the unit has sat on a shelf.
Regulator contacts are Tungsten and can be cleaned with wet and dry paper. The cut-out contacts are silver and should be cleaned as MVPeters describes
Dave |
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47Jag
Joined: 26 Jun 2008 Posts: 1480 Location: Bothwell, Scotland
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Posted: Wed Nov 21, 2012 12:29 pm Post subject: |
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Mike & Dave,
Now where are you guys going to find a Pound note nowadays? I think the Bank of Scotland is the only bank printing them and we sell them for £5
Art |
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MVPeters
Joined: 28 Aug 2008 Posts: 822 Location: Northern MA, USA
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Posted: Wed Nov 21, 2012 2:04 pm Post subject: |
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If you run an antique car, you're supposed to keep an antique pound note in the antique Owners Manual in the antique glove box.
If you run out of antique petrol, one antique quid will buy you plenty!
Only the Scots could print money worth five times the face value - please teach me the trick. _________________ Mike - MVPeters at comcast.net
2002 MINI Cooper 'S' |
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colwyn500
Joined: 21 Oct 2012 Posts: 1745 Location: Nairn, Scotland
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Posted: Wed Nov 21, 2012 2:17 pm Post subject: |
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MVPeters wrote: | If you run an antique car, you're supposed to keep an antique pound note in the antique Owners Manual in the antique glove box.
If you run out of antique petrol, one antique quid will buy you plenty!
Only the Scots could print money worth five times the face value - please teach me the trick. |
If a ten-bob note takes twice as long as a pound, perhaps the £5 a shot quid note does it five times as quickly.
I do have a couple in the glove-box; been there for ages, I thought they were worthless.
Last edited by colwyn500 on Wed Nov 21, 2012 8:21 pm; edited 1 time in total |
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cheltenham-sable
Joined: 05 Apr 2012 Posts: 22
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Posted: Wed Nov 21, 2012 7:41 pm Post subject: |
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Haha thanks for the replys the batterys brand new although the car has been stood for 7 years before i got it, how go i clean them? I havnt had any experience with control box's before only sealed ones on old tractors.
Regards Tom |
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cheltenham-sable
Joined: 05 Apr 2012 Posts: 22
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Posted: Wed Nov 21, 2012 8:30 pm Post subject: |
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I have taken off the cover on the regulator box and can see 2 copper coild with like points on the end i take it these are what you mean? should i rub some very fine 1500 wet n dry in the gap or £5, £10 note?
Regards Tom |
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MVPeters
Joined: 28 Aug 2008 Posts: 822 Location: Northern MA, USA
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Posted: Wed Nov 21, 2012 8:42 pm Post subject: |
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You're in the right place, Tom.
1500 w&d might be OK, just don't be aggressive.
You're cleaning/polishing the points, rather than sanding them.
Blow the dust out.
Post-decimal notes won't work on a pre-decimal regulator! _________________ Mike - MVPeters at comcast.net
2002 MINI Cooper 'S' |
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P3steve
Joined: 24 Nov 2007 Posts: 542 Location: Great Yarmouth, Norfolk
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Posted: Thu Dec 13, 2012 2:33 am Post subject: |
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I’ve got exactly the same fault on my P3 Rover and I took it to an old school auto electrician chap I know who tried to clean it but its still sticking and will need a new control box.
This is the type I will need but they do others, buying new old stock could be a false economy as being in storage for a long time could create the same problem.
http://www.holden.co.uk/displayProduct.asp?pCode=RF95 _________________ If the world didn't suck we'd all fall off |
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