Fitting a Stebel air horn

I have a Stebel Nautilus air horn and Eastern Beaver horn relay. The Stebel is quite large, and after spending some time going over the bike looking for a good mounting location, I had to conclude there isn’t one.

However the Stebel, being an air horn, is made up of two parts – the compressor and the horn – which can be separated. Now that’s more like it!

The compressor can go where the (useless) toolkit used to be. The plastic fitting on the horn that used to wrap around the compressor body, now wraps neatly around the upper fork leg.

The Eastern Beaver relay makes it easy to get this up and running – the only problem being it was made for a V-Strom and is a bit long – I had to shorten some of the wires a little. The relay itself is stuck with double-sided tape to the panel just above the compressor.

The horn can be oriented to avoid hitting anything when handlebars are turned, and also should not hit the mudguard under full compression. There is no wiring going to the horn that is located on the fork leg, just a length of clear hose going from the compressor, and routed up the inside of the fairing.

I wouldn’t be surprised if I have to make  some adjustments here and there, but so far in a couple of days running around town, it seems the theory is sound. Speaking of sound… it’s bloody loud!

UPDATE September 14 – no problem so far, I did make one further modification however. There is an air outlet facing forward on the horn – it would not be good to get water in there so rather than attach yet another length of hose I added a small 90º elbow. The one I had was too small to fit the hole properly, so I just glued it in with Shoe Goo. It’s not going anywhere, and I covered 500 wet miles recently and the horn still works perfectly.

 

Stebel compressor placement on the Super Tenere

Compressor located where the tool kit used to be, and using the same rubber strap to hold in place (extended with cable ties for now).

 

Stebel horn - front view

Stebel horn - front view at full right lock. I clears the bodywork by a few millimetres.

 

Top view showing the hose attaching to the horn on the fork leg

Top view showing the hose attaching to the horn on the fork leg

Stebel air hose connector

This is the connector to join the hose from the compressor, to the horn. It's just a straight hose connector, can't tell you what size, I had a variety to choose from so just rummaged through till I found one that fitted. You can see the connection lives just behind the lower triple-clamp.

Stebel horn on Super Tenere - front view

Stebel horn on Super Tenere - front view

 

90 degree elbow to limit water intake

Late modification! The horn has an air outlet that is facing forward in this configuration. It's less than optimal to have water entering the horn, so... I added a small 90º elbow to the outlet.

Comments (4)

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  1. Kevin Lanum says:

    Nice work and creativity! I was just out looking at this exact issue and took a break to see what others have done. Same horn, same bike!

    My only question is “how did you take the horn cover off?” I don’t like prying and snapping off plastic if I can know how it was put together. I will study and figure it out, but any advice would be much appreciated.

    Love the fact of no bike mods and using the rubber tool kit strap is so awesome I cannot even describe.

    • Trevor Angel says:

      To answer the question about separating the plastic horn molding from the steel compressor body – like you, I didn’t like the idea of forcing it in case the plastic shattered. In the end I just gently pried it off, it really wasn’t a problem. The upper fork leg is the same diameter as the compressor body, so the horn just clips on like it was made for it!

  2. Patrick Jaki says:

    Question? How did you disassemble the stebel? What is the process?

    • Trevor Angel says:

      The plastic part is really just a press fit on the steel body – it can be gently pried apart. Just be careful with the small pipe that goes into the compressor body. It’s a press fit as well, but comes out at a different angle to the rest of the assembly.

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