Author Topic: Horn on SP will not blow. Will horn from BMW work.  (Read 6885 times)

dilligaf

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Horn on SP will not blow. Will horn from BMW work.
« on: January 13, 2015, 08:05:26 PM »
I seldom ever blow my motorcycle or car horns so I have no idea how long the horn has been broken.  The first indication I had a problem was when I pushed the wrong button and the horn attempted to blow.  It went eeeeee once and hasn't been heard from since.  That was last summer and yesterday I decided to repair it. 
I ran some test and I'm sure it's the horn.  I have the horn from the K75S that I hit the deer with four years ago.  Not sure it works as I never blew that horn either.
Question.  Will a BMW horn work on my SP?  They look exactly alike.  Do you think anyone will notice that the horn is blowing in German.
Thanks,  :BEER:
Matt

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #1 on: January 13, 2015, 08:12:49 PM »
Oh deer.

oldbike54

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #2 on: January 13, 2015, 08:43:43 PM »
Sure it will work , just don't tell Chuckie  ;D

  Dusty

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #3 on: January 13, 2015, 09:08:50 PM »
If you never use your horn you will never know.
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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #3 on: January 13, 2015, 09:08:50 PM »

Offline rbm

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #4 on: January 13, 2015, 09:56:35 PM »
I replace the two "corna patetici" on my V7 with great honkin' BMW horns from a K100.  They worked perfectly.  Make sure that the SP has a horn relay with 20A contact ratings.  If not, there are special DPST Fiamm relays available (one contact to each horn) for dual horn setups.
« Last Edit: January 13, 2015, 10:02:02 PM by rbm »
- Robert

2011 Moto Guzzi V7 Racer
1987 BMW K75 @k75retro.blogspot.ca

dilligaf

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #5 on: January 13, 2015, 10:07:53 PM »
I replace the two "corna patetici" on my V7 with great honkin' BMW horns from a K100.  They worked perfectly.  Make sure that the SP has a horn relay with 20A contact ratings.  If not, there are special DPST Fiamm relays available (one contact to each horn) for dual horn setups.

Should I use a relay made in Germany or will any 20A relay work?
Thanks,  :BEER:
Matt

Offline Arizona Wayne

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #6 on: January 13, 2015, 10:12:16 PM »
I put a Harley horn on my Suzuki and it worked just fine.  ;-T

dilligaf

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #7 on: January 13, 2015, 10:13:14 PM »
That's because they are both made in Japan.  ;D  :BEER:
Matt

LongRanger

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #8 on: January 13, 2015, 10:16:00 PM »
I put the horn from a Triumph Spitfire into my VW Rabbit. Was that wrong?

oldbike54

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #9 on: January 13, 2015, 10:22:58 PM »
I put the horn from a Triumph Spitfire into my VW Rabbit. Was that wrong?


Did it make the electricity run backwards Eric ? :D
 
 Dusty

LongRanger

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #10 on: January 13, 2015, 10:48:48 PM »
Nope, negative ground all around, but years later I felt unusually guilty about circumcising that lovely little Spitfire. Some things just aren't meant to be, I guess.

Offline Chuck in Indiana

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #11 on: January 14, 2015, 05:58:48 AM »
Quote
Will a BMW horn work on my SP?

Well, yeah, but it will add a second to your quarter mile time, and it'll handle bad.
Chuck in (Elwood) Indiana/sometimes SoCal

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Offline drlapo

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #12 on: January 14, 2015, 08:24:30 AM »
the bmw will not be as melodious as the MG horn; it will  shout ACHTUNG instead of pardon me

dilligaf

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #13 on: January 14, 2015, 02:03:24 PM »
That's what I was afraid of.  Horns tend to piss people off, or they do me, and that the last thing I want on a motorcycle.  So I had better stick with "pardon me".  ;D The truth is that when I want to blow the horn I can't remember where the button is and by the time I find it I've forgotten why I wanted to blow the dam thing. :BEER:
Matt

Offline drlapo

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #14 on: January 14, 2015, 02:08:27 PM »
just kidding, the horn on my R80 is no more annoying than the twin horns on my V7

Offline mgfan

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #15 on: January 14, 2015, 02:27:00 PM »
Horn must stick out straight sideways!   :BEER:
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Online Mike Tashjian

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #16 on: January 14, 2015, 03:55:44 PM »
I have a low note Buick horn.  Whenever I use it I just look around like someone else is blowing it, in the confusion I just drive off.  Mike

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #17 on: January 14, 2015, 07:15:04 PM »
The truth is that when I want to blow the horn I can't remember where the button is 

Grating the starter works as well, don't ask me how I know.
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Moto Guzzi - making electricians out of riders since March 15 1921

dilligaf

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #18 on: January 14, 2015, 09:18:27 PM »
That's how I discovered my horn was broken.  ;D  I was trying to start the motorcycle.  ::)  :BEER:
Matt

Offline Monza-jockey

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #19 on: January 15, 2015, 12:51:29 AM »
If it went "eeeeee" the tuning set screw is probably not in the right position.

Put in some ear plugs and bench test it with 12V, adjust the set screw for maximum annoyance and Loctite it in place....Presto!
I don't always ride motorcycles, when I do,  I prefer  Moto Guzzi.

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #20 on: January 15, 2015, 01:10:55 AM »
Put a bicycle bell on.  You ought to see the reactions you get in heavy traffic.  ;D
From the Deep Deep South out in left field.  There are no stupid questions.  There are however stupid people asking questions.  🤣, this includes me.  😉

dilligaf

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #21 on: January 15, 2015, 06:43:01 AM »
If it went "eeeeee" the tuning set screw is probably not in the right position.

Tuning set screw?  ;D Really!!!!  ;D  :BEER:
Matt

Offline frans belgium

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #22 on: January 15, 2015, 11:47:18 AM »
the bmw will not be as melodious as the MG horn; it will  shout ACHTUNG instead of pardon me

 ;D
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oldbike54

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #23 on: January 15, 2015, 11:55:21 AM »
The German horn will not "talk" with its hands  :D

  Dusty

Offline cloudbase

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #24 on: January 15, 2015, 02:18:40 PM »
It's time to go big.



It plays "la cucaracha."
« Last Edit: January 15, 2015, 02:19:43 PM by cloudbase »

Offline normzone

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #25 on: January 16, 2015, 12:24:12 AM »
Grating the starter works as well, don't ask me how I know.

I think most of us know the reason...

I put a seventies Cadillac D note horn on my Eldo. It was nice.
« Last Edit: January 16, 2015, 12:25:27 AM by normzone »
That's the combustion chamber of the turbo shaft. It is supposed to be on fire. You just don't usually see it but the case and fairing fell off.

dilligaf

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #26 on: January 16, 2015, 07:22:35 AM »
Not sure, from a value received point of view,  fixing the horn is worth the effort. We did away with "inspections" years ago so I have no need for a horn.  Anyway, Monday morning, noon at the latest, I'll get right on it.  ;D  :BEER:
Matt
« Last Edit: January 16, 2015, 07:35:47 AM by dilligaf »

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Re: Horn on SP will not blow. Will horn from BMW work.
« Reply #27 on: January 16, 2015, 01:50:26 PM »
Teutonic

two-tone-ic

toot-on-it

Nope.  Won't fit.  Either that or it loses something in the translation.


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