Lightning
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| posted on 21/5/17 at 07:32 PM |
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Radio cutting out in old car
I know that some clever person on here can help me
After selling the Spire i have been rebuilding an old Alvis after 30 years off the road. Its now finished except for a couple of small teething
problems.
It is -ve earth with dynamo. I have fitted a Caliber radio/mp3 thingy. It works all tickerdy boo when engine not running but when she fires into life
there is both clicking and momentary cutting out. The clicking presumably is because there are no surpressors yet.but why is it cutting out?.This is
only momentarily then on then off.
Any ideas?
[Edited on 21/5/17 by Lightning]
Steve
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gremlin1234
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| posted on 21/5/17 at 07:52 PM |
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if it is off while the starter motor is running then its probably designed to do that. (the acc position on the key-switch is often wired like
that)
else it could be the drop of the battery voltage causes issues.
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ReMan
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| posted on 21/5/17 at 08:09 PM |
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Much clicking in a dynamo, presume with a separate regulator box. I wonder if the "electrical noise" is too much for the sedative
electronics and its going into some sort of protection mode?
I's suggest some suppressers first and see if you can improve it. Possibly even a big capacitor close to the radio too
www.plusnine.co.uk
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Lightning
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| posted on 21/5/17 at 08:18 PM |
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Reman
That was on the lines that I was thinking. Now to sort out surpressors..
Its after the thing is running BTW
Steve
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ReMan
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| posted on 21/5/17 at 08:21 PM |
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Yes:- without it running radio is off a battery so nice clean 12v, its the charging kicking in i recon
www.plusnine.co.uk
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r1_pete
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| posted on 21/5/17 at 08:37 PM |
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Have you thought about fitting one of those alternators disguised as a dynamo?
Those electro mechanical regulators constantly switch and arc, you can leave it in place but inactive to preserve authenricity.
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ReMan
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| posted on 21/5/17 at 08:40 PM |
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quote:
Originally posted by r1_pete
Have you thought about fitting one of those alternators disguised as a dynamo?
Those electro mechanical regulators constantly switch and arc, you can leave it in place but inactive to preserve authenricity.
Otherwise you can get a electronic regulator replacement.
Be nice to narrow the issue down with a bit of playing first though
www.plusnine.co.uk
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Lightning
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| posted on 21/5/17 at 09:27 PM |
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Have you seen the prices of alternator/dynamo lookalikes?
Steve
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ReMan
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| posted on 21/5/17 at 09:57 PM |
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Shizzle!
When do we get a pic of the alvis?
www.plusnine.co.uk
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r1_pete
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| posted on 21/5/17 at 10:17 PM |
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quote:
Originally posted by ReMan
Shizzle!
When do we get a pic of the alvis?
Good point, no pics not real
As ReMan says the electronic reg might be a better bet, but, an alternator provides more current, so better charge.
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02GF74
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| posted on 22/5/17 at 06:44 AM |
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interference could be conducted over the wires or radiated, for wire borne interference an in line choke or capacitor may reduce and/or fix it.
radiated would require screening of dynamo and/or cables, less easy. a simple fix would be to relocate aerial as far from the source as possible,
i.e. stick it at the rear of the car.
were the original cars fitted with radios, if yes, then there is hope a radio (not necessarily the one you fitted) may work.
alternative is to record radio programmes and play back using cassette or mp3 player. I have a couple of John Peel show episodes recoded that are now
quite precious as there will never be any new ones  only drawback is that the news will not be current.
i'm sure you've googled but this and others like it may be of use.
https://www.howacarworks.com/accessories/identifying-and-suppressing-radio-interference
[Edited on 22/5/17 by 02GF74]
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Lightning
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| posted on 22/5/17 at 07:54 PM |
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Tried to upload some photos
But when uploading to locostbuilders gallery it says files should be alphanumeric . the file name is alvista21dhc. Whats wrong with that?
Steve
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Lightning
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| posted on 23/5/17 at 02:52 PM |
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Steve
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Lightning
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| posted on 23/5/17 at 02:56 PM |
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Steve
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Lightning
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| posted on 23/5/17 at 03:02 PM |
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Steve
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r1_pete
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| posted on 23/5/17 at 04:07 PM |
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Very nice...
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perksy
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| posted on 23/5/17 at 08:45 PM |
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That's just lovely
Anymore info on the car please ?
[Edited on 23/5/17 by perksy]
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ReMan
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| posted on 23/5/17 at 09:30 PM |
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fantastic!
How bad or good, was it before you started it?
www.plusnine.co.uk
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Lightning
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| posted on 24/5/17 at 06:11 AM |
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Steve
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ReMan
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| posted on 24/5/17 at 06:25 AM |
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I'm impressesed! Did the big bits come with it, wings bumpers etc?
I know who to come to now when I need some help with mine!
Wow!
www.plusnine.co.uk
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