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stevefizz
Joined: 26 Jun 2015
Posts: 30
Location: Loughborough
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 Posted: Mon Feb 27, 2017 11:40 pm Post subject: new indicators and relay very erratic when engine is running |
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Hi
Restoring a 1938 vauxhall DX positive earth 12v
Installed indicators and a relay works fine with the ignition on but flash very erratic when the engine is running
do i need a solid sate voltage regulator
do i have a fault somewhere
have i wired it up wrongly
or something else
Thanks
steve |
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Phil - Nottingham
Joined: 01 Jan 2008
Posts: 1252
Location: Nottingham
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| Posted: Mon Feb 27, 2017 11:59 pm Post subject: |
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It points to the dynamo output being wildly variable - these being thermal are only slightly sensitive to engine speed and were fitted to dynamo cars - the standard factory fit works well on out Rover P4 and P5 and also on our 1938 P2 all of which have positive earth dynamos as standard factory fit. You are not using LED's are you?
_________________
Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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stevefizz
Joined: 26 Jun 2015
Posts: 30
Location: Loughborough
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PAUL BEAUMONT
Joined: 27 Nov 2007
Posts: 1281
Location: Barnsley S. Yorks
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| Posted: Tue Feb 28, 2017 1:56 pm Post subject: |
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Is the earth good? I find that a poor earth is the cause of most bizarre electrical problems.
Good Luck! |
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Phil - Nottingham
Joined: 01 Jan 2008
Posts: 1252
Location: Nottingham
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| Posted: Tue Feb 28, 2017 6:03 pm Post subject: |
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It should work but I prefer the original electromechanical ones which need a narrow Wattage range. They lasted longer too
_________________
Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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Penguin45
Joined: 28 Jul 2014
Posts: 381
Location: Padiham
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| Posted: Tue Feb 28, 2017 6:09 pm Post subject: |
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Just this very afternoon I bought one of the electronic flasher units (A 2 tag one from the same manufacturer) at my local Moss Europe, to replace the third tin can to have failed in the last three month. Half the price of the eBay one BTW.
P45.
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'67 Wolseley MkI 18/85, '70 Austin MkII 1800 The Landcrab Forum. |
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stevefizz
Joined: 26 Jun 2015
Posts: 30
Location: Loughborough
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| Posted: Mon Mar 06, 2017 10:51 pm Post subject: |
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| The plot does thicken though. i had the dynamo cables the wrong way round. now occasionally the ignition warning light stays on when i turn the ignition off. |
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Phil - Nottingham
Joined: 01 Jan 2008
Posts: 1252
Location: Nottingham
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| Posted: Mon Mar 06, 2017 11:20 pm Post subject: |
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Cut out is sticking - what regulator is it? Lucas RF91?
_________________
Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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stevefizz
Joined: 26 Jun 2015
Posts: 30
Location: Loughborough
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| Posted: Tue Mar 07, 2017 12:09 am Post subject: |
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| CJR3 i think, single bobbin, 3 bush dynamo |
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stevefizz
Joined: 26 Jun 2015
Posts: 30
Location: Loughborough
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| Posted: Tue Mar 14, 2017 7:55 pm Post subject: |
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Okay i think i understand whats happening
measured the voltage with the engine running on tickover and got about 7volts
measured the voltage from the dynamo with dynamo disconnected and the f and d jumpered and got 3 volts
im going to created a new post for the dynamo |
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jp928
Joined: 07 Jun 2016
Posts: 249
Location: Australia
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| Posted: Tue Jun 20, 2017 7:35 am Post subject: |
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I had crazy volts from my 3 brush 6v Lucas, no charging, despite genny being overhauled. Cleaned the cutout points with wet'n'dry, volts stabilized, charged 8A.
jp 26 Rover 9 |
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