Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives :: Books
Support This Site: Contributors :: Advertise


It is currently Dec Mon 22, 2014 1:06 pm


All times are UTC [ DST ]



Post New Topic Post Reply  [ 9 posts ] 
Author Message
 Post subject: Car radio vibrator
PostPosted: Oct Thu 19, 2006 2:42 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 209
Location: Fossano (CN) Italy
Hi guys,

I am fighting with an old vibrator because it only starts sometimes, I remember there is a trick to have it working again, but I can't remember how it is done, please could someone enlight me??

The vibrator is the #83-0035, for a car with 6V negative ground system, while I'm at it, someone has one for spare I could buy?

Thanks

Giulio Maiocco

_________________
g.maiocco@alice.it
[url:2ez3g2dw]http://digilander.iol.it/tubeamp[/url:2ez3g2dw]


Top
 Profile  
 
 Post subject:
PostPosted: Oct Thu 19, 2006 2:59 pm 
Moderator

Joined: Jan Thu 01, 1970 1:00 am
Posts: 31663
Location: Livermore, CA
Hi Giulio

There are things that can be done if points aren't burnt away. After a lot of operation vibrator points will burn. I've taken some apart that no longer had points.

Vibrators have a coil and couple sets of points. Power is first applied to the coil. In most vibrators a set of points closes shorting out the coil. This causes switching. If the points don't make contact there won't be any action.

You can power the vibrator with high voltage trough a lamp. Operate the vibrator off the 120 volt AC line. The lamp will limit power to the vibrator but allow high voltage to clean away oxidization on the points. You probably have 240 volts? Never tried a vibrator on this high of AC line.

A vibrator can be taken apart by prying along the bottom. You can check condition of points and file them flat if they are pitted.

_________________
Norm


Top
 Profile  
 
 Post subject:
PostPosted: Oct Thu 19, 2006 4:52 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 23377
Location: Maryland 20709, USA
The technique which Norm described of running the vibrator from the AC line with a current-limiting resistance was recommended by the vibrator manufacturers to clean the contacts.

The only other solution is to disassemble the vibrator and clean the contacts by hand. But that's a lot of trouble, and the AC power solution usually works.

_________________
73 de Leigh W3NLB
http://www.AtwaterKent.info
Click "Grebe Stuff" for Synchrophase info


Top
 Profile  
 
 Post subject:
PostPosted: Oct Thu 19, 2006 5:31 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 209
Location: Fossano (CN) Italy
Hi Norm and Leigh,

I have just done the trick you suggested and now the vibrator seems to work, it usually starts, but not always, I have to rapidly switch off and on the radio to start it. Here in Italy we have 230V ac line, but I used a step-down transformer that isolates me from some dangerous shocks.

I had to open it anyway to file the contacts, but now they are like new, so this vibrator should have some life left in it.

Kind Regards

Giulio Maiocco

_________________
g.maiocco@alice.it
[url:2ez3g2dw]http://digilander.iol.it/tubeamp[/url:2ez3g2dw]


Top
 Profile  
 
 Post subject: Re: Car radio vibrator
PostPosted: Oct Thu 19, 2006 6:43 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 9871
Location: Omak,wa,usa
[Hello="Giulio Maiocco"]
I will check my Stock I have few N.O.S one still in the original boxes I see if I still have any left.
sincerely Radio Rich


Top
 Profile  
 
 Post subject:
PostPosted: Oct Thu 19, 2006 7:15 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 209
Location: Fossano (CN) Italy
Hello Radiorich,

your offer is much appreciated, the radio in question is not mine, but is for a dear friend of mine that is restoring his GM (?) 1951 truck. He has also a 1963 V8 Cadillac and I like vintage cars!! :D

If you find the vibrator, we could find a way to pay you what I owe for this part

Thanks a lot

Giulio Maiocco

_________________
g.maiocco@alice.it
[url:2ez3g2dw]http://digilander.iol.it/tubeamp[/url:2ez3g2dw]


Top
 Profile  
 
 Post subject:
PostPosted: Oct Fri 20, 2006 2:05 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1958
Location: Charleston, W.Va.
Norm's method will usually work. But of course opening up the vibrator and cleaning the points is best. But back in the old days we never did either, I can remember when you could buy new vibrators at the auto parts or electronics store for only a few dollars, so there was little need to try to restore an old one. No doubt we threw away many vibrators in years gone by which could have been repaired and furnished several more years of useful life.

This brings back memories which many will share who grew up driving old cars with tubed radios, or who own antique cars presently. A vibrator which sometimes did not start was fairly common. And of course you did not want to pull the radio from the dash until absolutely necessary. So the solution was usually to switch the radio on-and-off a couple of times which generally got the vibrator started. If not, then bang your fist on the metal dashboard and that usually did the trick.

_________________
Poston


Top
 Profile  
 
 Post subject:
PostPosted: Oct Fri 20, 2006 2:28 am 
Silent Key

Joined: Jan Thu 01, 1970 1:00 am
Posts: 34328
Location: Sandpoint, IDAHO 83864
Oh, yeah, I fondly remember those days of banging on the dash and multiple switchings of the on/off switch to get a cranky vibrator to work. Then there were the times when you were out on a date and after being parked for a while with the radio playing the Rolling Stones or Elvis, you realized it was time to get her home. Suddenly you remembered why you always parked on a hill or had jumper cables with you if other cars were going to park nearby.

I always headed for the mountains, so I always made it a point to park with the car situated so you could get a rolling start after you killed your battery by listening to the radio all night. Of course they were all in stick shift cars. No automatic transmission cars, like my buddy's Buick Dynaflow that we had to always jump to get it started.
Curt

_________________
Curt, N7AH
(Connoisseur of the cold 807) CW forever!


Top
 Profile  
 
 Post subject:
PostPosted: Oct Sun 22, 2006 5:21 am 
Member

Joined: Oct Sun 15, 2006 12:57 pm
Posts: 3826
Another solution would be to use a solid state replacement for the vibrator. The manufacturer may sell to you or tell where you can purchase one.

http://www.radiosforoldcars.com/vibratorsF.htm

these are also available here.http://www.tubesandmore.com/scripts/foxweb.dll/catalog@d:/dfs/elevclients/cemirror/ELEVATOR.FXP?PAGE=SUBCAT&SEARCH_TREE01=RADIORESTOR&SEARCH_TREE02=VIBRATORS


Top
 Profile  
 
Post New Topic Post Reply  [ 9 posts ]  Moderators: Marcc, Norm Leal

All times are UTC [ DST ]


Who is online

Users browsing this forum: AJJ, glasdave, Michaelebig and 10 guests



Search for:
Jump to:  
cron
















Privacy Policy :: Powered by phpBB