I removed this from my 1964 Hydrodyne Tournament Skier. This speedometer was not original with the boat. This is the speedometer that I used up till this year. I have gone with a GPS speedometer. I know you purist may not like that, but it is my boat and I ski 3-4 days a week in the summer and I wanted a GPS speedometer.
This is the better of the two speedometers. Those of you that are familiar with these speedometers know that finding one that has not been repaired is rare. These speedometers do not just work off of straight air pressure. The air expands a small diaphragm that then turns a small dog leg that works a chain that then turns the needle on the speedometer.Why is this speedometer the better of the two? When the diaphragm goes, you get wet feet. The diaphragm is made of brass, there are two small pieces put together. One way to repair them is to take the speedometer apart and soldier the diaphragm back together. After that, the speedometer will work, but never quite as good as it did originally. I have never taken this speedometer apart.
Whereas the other I had to take it apart and repair it. The chrome has some mild pitting, but nothing serious. The glass is in very good shape. The speedometer set needle works fine. Let me know if you have any questions.
The item "Vintage boat speedometer Chris Craft MasterCraft Correct Craft Ski Airguide" is in sale since Wednesday, June 22, 2016. This item is in the category "eBay Motors\Parts & Accessories\Boat Parts\Electronics & Navigation\Other Electronics & Navigation". The seller is "scwaterskiier" and is located in Norwood, North Carolina. This item can be shipped worldwide.