Ooga is Iffy.
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Topic author - Posts: 913
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Ooga is Iffy.
Hi all,
My Ooga horn is iffy. Is there anything I can do about it? I either have to adjust the adjusting screw at the back in the picture a click or 2 up, run it then back down and exercise it some more and/or charge the battery. Suggestions appreciated.
My Ooga horn is iffy. Is there anything I can do about it? I either have to adjust the adjusting screw at the back in the picture a click or 2 up, run it then back down and exercise it some more and/or charge the battery. Suggestions appreciated.
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Re: Ooga is Iffy.
I think you have a Sparton Ahoga Horn. There are several videos on you tube about repairing them . Maybe that will help. I had one and a little lubrication helped if I remember. Maybe this video might help. https://www.arcar.org/video-un31ggrtp5i
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Re: Ooga is Iffy.
Those things need periodic lubrication. It may also need a larger size wire/switch to assure that it is getting enough current to start. A good ground is also essential.
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Re: Ooga is Iffy.
You might consider a horn relay. The wire to the switch and the switch contacts are pretty flimsy.
1917 Touring
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1946 Aeronca Champ
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Topic author - Posts: 913
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Re: Ooga is Iffy.
Thank you, the video was helpful. It does indeed look like a Sparton Ahooga Horn. Mine also has no markings on it. I used synthetic clock oil on the shafts and felts. It seemed to improve quite a bit. I inherited a non-functioning grandfather clock and taught myself how to clean and lube them. One bottle is enough for a lifetime of clock lubes so it seemed suitable. Thanks again.
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Re: Ooga is Iffy.
You might also check/clean the brushes & polish the armature.
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Re: Ooga is Iffy.
Oddly with time its performance deteriorated again. It was good and strong for about a week. Now it is back to variable. If I back the adjustor screw way out you can hear the motor running smoothly and evenly. There is no sound when you adjust it out. Then start adjusting it back on tighter the motor sound becomes variable. Adjust it some more and you may or may not get aooga sound or the motor will stick and no aooga or motor sound will come out.
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Re: Ooga is Iffy.
The motor brushes may be dirty or worn out and/or the commutator may be dirty or oily. I'd also recheck all connections and switches. A loose connection might develop heat and gain resistance after the motor runs a short time. A switch can do the same. Badly worn motor bearings could be a problem, but I'd look for the above conditions. Most horns don't get enough use to wear out the bearings unless they've never been oiled.
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Re: Ooga is Iffy.
Do you have the same problem when the engine is running with the generator charging? I have one on one of my cars and it works best with the engine running. You just need to clean up everything, lubricate and adjust. It must be loose enough to spin so you get the OOGA sound. Try adjusting with the engine running fast enough to charge the battery. Of course if you don't have a generator or alternator, then you will just need to keep your battery fully charged and adjust so it will operate without a generator.
Norm
Norm
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Re: Ooga is Iffy.
A better solution for such a nice original car would be to "ditch" the Aaogha horn and get the original 'beep' 'beep' horn. Of course some people like you and I don't enter our cars in judging and have personal preferences. You obviously like the sound of the Aaogha horn, and that's your choice.
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Re: Ooga is Iffy.
You might check for excessive voltage drop at the horn terminal when it begins to act up. With a 6 volt system, the voltage at the horn terminal with the horn operating should be around 5 to 6 volts. Excess voltage drop could indicate a switch or wiring problem or internal problems with the horn motor. The ooga horn probably uses more current than the stock '26-27 mashed goose horn did, and the stock T wiring and switch may be inadequate to operate it correctly.
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Re: Ooga is Iffy.
There are 2 screws at the back cover pictured. The smaller one towards the engine seems to hold on the cover and level out the back support in a see-saw type way and the other bigger one closest to the camera seems to adjust it, somehow?. If I put the cover screw on all the way tight and adjust the err bigger adjuster it kind of works. There is voltage drop when it doesn't work. No voltage drop when spinning. If I put the cover screw on loosely it spins well but doesn't make sound. Confusing.
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Re: Ooga is Iffy.
Check and assure that the horn 6 volts and not 12 volts
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Re: Ooga is Iffy.
The armature could use a cleaning as well as getting the junk out between the segments. Check that both brushes have free travel & spring tension.
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Re: Ooga is Iffy.
If the bearings are worn and allowing the armature to drag, the horn will not work as it should. Be sure the shaft is not bent.
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Re: Ooga is Iffy.
Hook it up to your modern car that's 12 volt - did it work before on 6 v. ? The original tag appears to be painted over but it would have stated the voltage & model normally.
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Re: Ooga is Iffy.
There appears to be gunk that is probably conductive bridging from segment to segment of the motor. This bridge is shorting the motor, causing a heavy current draw to overcome it.
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Re: Ooga is Iffy.
Use fine sandpaper on the armature - hold a piece with your finger and hand turn it. Looks as though there is a flathead screw holding in each brush so carefully loosen it and watch so see if the brushes start to release - there's a spring behind each brush so try & keep the work area confined so as not to have pieces fly out. There is spray electrical cleaner available at the auto parts store so squirt each brush & holder & reassemble - it's not a tough job BUT if you're uneasy about the task you can send it off to me & I'll inspect and clean it at no cost !
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Re: Ooga is Iffy.
Received this back from RajoRacer who said: 'Most likely the dirty armature & sticky brushes'. It is now loud and proud! Looking forward to driving it to church and goosing it! Thank you so much!
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Re: Ooga is Iffy.
One screw in the back holds the cover on, the other one adjusts the diaphragm. They are very sensitive and change dramatically with temperature. Oil the motor, clean the armature and it should sound fine.
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Re: Ooga is Iffy.
It worked great for a Sunday drive a week ago then this Sunday it is back to iffy. The post that the wire is on is probably the problem. I wiggled it and it temporarily worked again. If I tighten down the bottom nut so the post is not wiggly it sparks but does not work at all. If I back off the bottom nut and make the post wiggly then it sometimes works. What should I do? I would like to avoid taking it all apart again.
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Re: Ooga is Iffy.
Every time I read this post I keep thinking you say Olga is iffy and if she reads this post she ain't going to like it. Rudy
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Re: Ooga is Iffy.
At this point, I'd say it is safe to say that Olga is becoming openly belligerent. The U.N., as always, is useless. As for the horn, it looks like the terminal post insulation is bad, and the internal connection to the post may be loose, corroded, or broken. Dis-assmbley will be required.
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Re: Ooga is Iffy.
The cause is perhaps the insulating grommet at the positive terminal is frayed or gone now, so best to replace. The horn would have to be taken apart again. You could try to carefully remove the locking nut and try to stuff some string around it, but likely would just pull the terminal wire that is soldered inside away.
With electrical posts that have threaded terminals to attach leads, the first nut is the lock nut. That has to be held firm in position when you apply the lead wire, and when you apply the upper nut to secure the lead, otherwise the terminal can be separated.
BTW, your hot wire to that terminal using that plastic crimp lead has exposed wires, those could contact the horn cover and cause intermittent honks!
Yours seems to be a NorthEast horn.
With electrical posts that have threaded terminals to attach leads, the first nut is the lock nut. That has to be held firm in position when you apply the lead wire, and when you apply the upper nut to secure the lead, otherwise the terminal can be separated.
BTW, your hot wire to that terminal using that plastic crimp lead has exposed wires, those could contact the horn cover and cause intermittent honks!
Yours seems to be a NorthEast horn.
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Re: Ooga is Iffy.
IT was sure operating correctly when I sent it back - must be a "ground" problem either on the terminal posts (I checked the insulators) or the chassis ground ?
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Re: Ooga is Iffy.
Thank you for the advice and help. I opened it up and crumbled insulator fell out. More than is shown in the last picture. Where might one obtain or create an insulator grommet for this?
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Topic author - Posts: 913
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Re: Ooga is Iffy.
Is a new Model A ahooga horn wire grommet this? https://tinyurl.com/ykptpjuk
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Re: Ooga is Iffy.
I would head to your local ACE Hardware & check through the fiber washer assortment - you'll need 4 as they go on both sides.
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Re: Ooga is Iffy.
Heat shrink tubing.
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Topic author - Posts: 913
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Re: Ooga is Iffy.
So I found a rubber grommet at lowes and some #6 washers so I hope it works. I couldn't find any composite or hard felt washers.
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Re: Ooga is Iffy.
We've finally come to the conclusion that there is an intermittent short in the motor winding. It isn't obvious where the short is. Does anyone know how this can be fixed?
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Topic author - Posts: 913
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Re: Ooga is Iffy.
Steve was able to locate and fix the intermittent short as well as replace all the grommets. I also have it grounded properly with the green wire and used a cone wrench to keep the grommet from having an issue. Loud and proud again. Now I have another one that I bought at Chickasha 2 years ago. It says 'Loud' and '$25' on it. Nothing comes out. The inside doesn't look the same as the other. There is no label on it. I tried it on 6v and 12v nothing. It does not spin. What is this horn and perhaps what might be wrong?
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Re: Ooga is Iffy.
I don't know what brand it is, but I do know what's wrong with it...
Steve hasn't seen it yet
Steve hasn't seen it yet
Scott Conger
Tyranny under the guise of law is still Tyranny
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Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured