half-round horn

pyrodork

pyrodork

Member
i've got one of the cheaper-looking horns with a half-round rear end rather than the traditional can type.

this may actually be the same horn, but i haven't found any markings yet, so i'm not sure. everything looks exactly the same.
http://www.ebay.com/itm/SPARTON-MODEL-C-8-HORN-FOR-36-FORDS-OTHER-APPLICATIONS-6-VOLTS-/200674690646?pt=Vintage_Car_Truck_Parts_Accessories&hash=item2eb924c656&vxp=mtr

i did try connecting it to a 6v battery and i got sound for a brief second before i disconnected it and i couldn't get it to sound again. cracked it open and it was pretty rusty. obviously a rewire is in order. i think my field coil is good, but the cylinder part (capacitor, coil, ???) came apart during the de-wiring. diaphragm looks useable, but the flat disc it's connected to has corroded over the years (still had a half inch of corrosion!) and is far from round now.

i've cleaned everything up to the best of my ability, but now i need to figure out what that cylinder was that broke and if i can find a repop disc. if repop field coils are available, i'd probably get them just for the sake of replacing all the electrical components.

also, if anyone has further information on these types of horns, that would be great. i think the screw that sets the points above the field coil is for volume, and it sounds like the screw that holds the cover on may be the tone adjustment? i think it's a pretty safe bet that it's not an ahooga horn, but i honestly have no idea.

thanks!
 
If the one you have is the same as the the one in the picture you have a vibrating horn rather than the motor type normally used. The horn mech is a ******** that moves the plate that makes the sound. The ******** is a relay that energizes and de-energizes. Check the gap on the contacts and the contacts themselves to be sure they are clean. The cylinder thing is indeed a capacitor. It helps to keep the points from burning and may be needed to "regulate" the on and off times of the relay.
 
awesome.
any idea what the rating on the capacitor is supposed to be, or where i can come across a new plate? little dearborn is a quick drive and i've gotta go there anyway, so i'll ask there regardless.
 
I had the same horn on my 31 coupe. I took it off and looked into it and on the inside edge you'll find Delco Remy stamped in a small logo. I belive they put them on Chevy's in the same era and you are right that its not an Ahoooga horn. I'm going to put an original sparton horn on my car. :cool:
 
Ford used a beep horn something like that on some trucks, but they were made by Sparton and had a Model A projector on them, So look the same from the front of the car when fitted to a Model A and are a useful replacement while looking for an original one
John Cochran
 
montanafordman said:
I had the same horn on my 31 coupe. I took it off and looked into it and on the inside edge you'll find Delco Remy stamped in a small logo. I belive they put them on Chevy's in the same era and you are right that its not an Ahoooga horn. I'm going to put an original sparton horn on my car. :cool:
Click to expand...

i've heard that before, but i can't find anything. the inside edge of what part; the resonator, the cover, or the "gut plate"?

if it's the edge of the resonator, i probably won't see it. there is rust and corrosion there that i'm not planning to remove. going for the worn look. the inside of the cover and where the cover meets the resonator, i did clean that up and paint it (to hopefully prevent rust on the inside), but i'm not seeing anything there.

i do want an original-era ahooga eventually. this will do until then.
 
I belive it was on the "gut plate" as you called it. :) either under the cover or under the horn bell between the outside screw holes on the outer edge. Its a very small logo about the size of a pencil eraser head. I can see how rust or light bead blasting can make it unrecognizable and some were probably stamped pretty lightly.
 
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