This new topic is dedicated to the Kahlenberg Chimetone D-1 air horns I just purchased off eBay. This topic will be used for the horns. This topic will be used to only discuss the compressor and air supply in the Onboard Air Systems forum. (Sorry for the prior duplication of information.)
Here are my Kahlenberg D-1 air horns, freshly purchased off eBay. I will be getting these parts early next week.
This is two used Kahlenberg D-1 air horns, an air tank, a solenoid valve, a dead compressor and interconnection plumbing. The air horn does not include the factory mounting block.
Here are the links for my Kahlenberg Chimetone D-1 Air Horn.
These are on the Kahlenberg UK web site. For some reason the US web site does not have this information.
The horns were polished and now look outstanding. Boy, does Kahlenberg do a great job on chrome horns!
A cream metal polish was used and polished by hand (skin), rubbing in the polish to restore the finish. A soft rag was used to buff away the polish.
A rag was taped onto a narrow fiberglass rod to polish the depth of the trumpets.
There are some minor blemishes, but those only show up during the polishing. These will not be observed when mounted. These will be some serious eye candy on the boat.
The new Kahlenberg Chimetone D-1 air horns includes a mounting base. I priced replacing that base from Kahlenberg, but after doing a dry fit on the boat, I’ve decided to not get / use that missing part. It will be a MUCH better solution w/o that base. The arch has a curved top surface and the base is flat.
The fiberglass / gelcoat arch is thick enough, plus I am going to use a ¼" thick aluminum interior backing plate. This mounting method will be plenty strong.
Here are some images of my Kahlenberg Chimetone D-1 air horns and Kahlenberg 117 whistle mounted onto the arch of my 2000 Searay 380 Sundancer.
This shows making the placement marks, so that my front-to-back and my side-to-side are identical for both horns. One of the important requirements was to position both horns over a reinforced area on the arch. The factory included two one-foot wide regions of thicker fiberglass on either side of the arch. The location of those reinforcements is not identical, so I needed to place the horns over both AND be symmetrical.
The fasteners used to retain the horns to the arch are ¼-20 bolts. I chose the uber expensive highly-polished bolts and washers, so that the surface finish would be similar to the chrome plating.
The length options for these bolts were limited. I got the longest available bolt, but the stack-up did not permit using the planned ¼" aluminum backing plate. I ended up using this 1/8" backing plate instead.
The mounted image shows the thicker fiberglass section that was selected for mounting the horns.
