1973 Roadster Horn Location

bentrod · Sep 7, 2013

I've checked posts on where to mount the horn but couldn't find anything that looks similar to what I have. The horn was not on the bike when I disassembled it so I have no picture of where it went. I did have a picture of the triangular mounting bracket. I've tried fitting the horn in all the orientations shown but none fit in the frame. What have I got wrong please.

Art

concours · Sep 7, 2013

IIRC, that triangular bracket mounts to the rear fender mounting point, where you have it... around which the bike is built.

mikie3117 · Sep 7, 2013

Love the comment about the bike being built around the horn. I still take great pleasure in removing the existing horn on every project bike. The lower triple tree is a good place to mount a better horn.
Mike

Torontonian · Sep 7, 2013

Bentrod if you are going for a concours restoration then go ahead and awkwardly swear at this effort of meep - horn that no one can much see or hear. Most cars nowadays shield out meeps very well. Otherwise like-say you would want to drive the thing ,there are so many safer options out there on other threads to search. In my book a horn should be front and central and modern and LOUD and the pushbutton large and easily hit. A relay helps boost power to it. Peter.

bentrod · Sep 7, 2013

Torontonian said:
Bentrod if you are going for a concours restoration then go ahead and awkwardly swear at this effort of meep - horn that no one can much see or hear. Most cars nowadays shield out meeps very well. Otherwise like-say you would want to drive the thing ,there are so many safer options out there on other threads to search. In my book a horn should be front and central and modern and LOUD and the pushbutton large and easily hit. A relay helps boost power to it. Peter.

Actually I do have a Stebel air horn. I had it on my R90s and have since removed it to restore the BMW to original condition. I agree with you, I think I'm going to figure a way to use the Stebel.

Art

Torontonian · Sep 7, 2013

Stebel good. Just checking your motivations here and glad to HEAR you will be driving. The horn on my R1100 RT is so loud I have to take a breath in and hold it so as not to shock my heart. But my god do the cars move back to where they came from.

bwolfie · Sep 7, 2013

The Lucas 9H on my Combat is in the stock location and loud as hell.
Mine is wired thru a relay.
It does help to take a little time and fiddle with the adjustment screw for maximum loudness.
At first it was very useless, but now is startling.

Torontonian · Sep 7, 2013

The manual says it goes out of adjustment noting tiny cross headed adjuster screw needs to be backed off until the ammeter indicates correct range 11-12-15 volts. I'd consider a relay essential, but glad to HEAR you got it startling goodly. There is a dual alternating setup with a transistorized vibrator that I've never HEARD in action . Police stuff ?