Horn Detailing

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peterp
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Re: Horn Detailing

Post by peterp »

My 1966 (slightly later than 250's) Fiamm hoses I believe are original and have no lettering.
Peter P
1966 330 2+2 series 2 #8169
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tyang
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Re: Horn Detailing

Post by tyang »

no lettering.

Tom
'63 330 America #5053
John Vardanian
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Re: Horn Detailing

Post by John Vardanian »

Thanks everyone. I have not seen lettering on the 250 hoses either. I was looking thru the net and did find this on ebay. It's not a 250 horn, but does have the red hoses with lettering.

https://www.ebay.com/itm/AIR-HORN-FIAMM ... SwUxlbw5GX

john
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Melchior
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Re: Horn Detailing

Post by Melchior »

Hello Tom,

This is what my horn assembly looks like. The trumpets seem to br aloy only, no paint. I am rather sure that this is untouched due to the history of the car.

Regards,

Martin
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250 GTE #3631 (series Ii)
Wrigs2019
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Re: Horn Detailing

Post by Wrigs2019 »

I’ve decided to restore the Fiamm air horn off of my 66 330. I’m adding photos to provide information for others wishing to do the same. Disassembly was a bit of a hassle requiring a lot of penetrating oil and elbow grease. Does anybody have tips on cleaning the electric motor?
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66 330 GT 2+2 #9153
Wrigs2019
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Re: Horn Detailing

Post by Wrigs2019 »

DDA56213-F20A-41C6-98AD-8827A75E1799.jpeg
66 330 GT 2+2 #9153
John Vardanian
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Re: Horn Detailing

Post by John Vardanian »

Unless there is oily contamination, there should be nothing other than carbon dust inside the fields. High pressure air should be enough to clean things. If it's caked contamination, I would Google the remedy... but rinsing things with mineral spirits shouldn't hurt. If you end up wetting it make sure it's thoroughly dried before you electrify it.

john
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tyang
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Re: Horn Detailing

Post by tyang »

Nice Job!

The trumpets are either a red candy finish, or grey hammertone. You can sometimes see the old finish to determine which one you have. I think with a 330, it's the red candy. I used a Tamya (sp?) hobby paint. Somewhere in my blog I've talked about it.

Be very careful on the y-fitting. Use a heat gun if you are going to disassemble it as it gets brittle. Both the hose and y are available.

Bracket is white cadmium.
horn body is back wrinkle.
The trumpet bases are grey hammertone.

Tom
'63 330 America #5053
Wrigs2019
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Re: Horn Detailing

Post by Wrigs2019 »

Mostly finished with the air horn. The air compressor works well but little sound is coming from the trumpets. I suspect the original red hose will need to be replaced as it is cracked in a few places. I had a really tough time finding the slotted machine screws so I just ended up put the old screws back in. I believe this color scheme is correct for a late 60s Roadmaster based on the attached pictures and this detailed thread.
A44537C4-699E-4350-B1AA-B651C17118B4.jpeg
66 330 GT 2+2 #9153
tim
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Re: Horn Detailing

Post by tim »

Greetings... Try screwing the trumpet in or out while running the compressor. They seem to be sensitive about location.

Tim
1964 330GT 5769 -the big yellow taxi 61&66 Morgan +4's Daimler SP250 Turner 950S and some other dull stuff plus a brand Mercedes C300 4matic
John Vardanian
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Re: Horn Detailing

Post by John Vardanian »

I found those screws in Amazon in stainless steel. IF you go back a few pages on this thread you will see.

To tune the trumpets, turn them in till they gently contact the reeds. Then power up the compressor and unscrew the two trumpets out simultaneously until you get the best/loudest sound. Then lock in the jam nuts.

john
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Wrigs2019
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Re: Horn Detailing

Post by Wrigs2019 »

Will do. Thanks John!
66 330 GT 2+2 #9153
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peterp
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Re: Horn Detailing

Post by peterp »

I hate to post a negative comment, but I believe the pump body should be wrinkle black. Period photos show that Fiamm produced the pump in both black and silver, but I suspect car manufacturers would choose pump body color based upon how it would blend in its factory mounting position. The rationale for choosing colors is a total guess, but I'm pretty sure that on 330's the pumps were typically fine grain wrinkle black.

Agree with the others on horn turning. I brought mine inside the house and, with ear plugs in, tried to tune the horns using a piano tuner app on the iPhone. I would have thought they would tune to be a whole tone apart, but the sweet spot ended up bing more like a half-tone apart (I think E and E-flat if I recall correctly). If you tune both to the loudest possible position, that should presumably yield the correct pitches from each horn. The volume level does change a bit when you tighten the lock nut down, so it may take a couple iterations to get each horn tuned.
Peter P
1966 330 2+2 series 2 #8169
Wrigs2019
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Re: Horn Detailing

Post by Wrigs2019 »

Yes! I stand corrected by Tom and Peter. I’ll have to address the paint along with the screws.
66 330 GT 2+2 #9153
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tyang
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Re: Horn Detailing

Post by tyang »

Hearing about you guys tuning the horns brings a smile to my face thinking about how we must all drive our families crazy working on these cars! Carry on!

Tom
'63 330 America #5053
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