Calibrate Speedometer

[160B]

Thanks 160b for all the information. As I stated in my initial post above, my speedometer was registering too fast. I took out the speedometer and disassembled according to 160b's instructions. The slot and rivet was centered. I moved it all the way clockwise to look like the illustration on the left above. Reassembled and went for a test drive. It slowed the indicated speed down by 5 mph. The speedometer is now 1 mph slow, I went too far with the adjustment. I am going to leave it alone for now, it's a lots closer that it was. If I ever have it apart again I will make a minor adjustment counterclockwise. Thanks to all for the help and comments.

Hugh

I am glad the info helped. I hope when you had the speedometer out that you followed the instructions and oiled the main shaft at the upper wick and lower wick. The Gordon Fischer instructions are for an oval speedometer but if you have a round speedometer the upper oil wick is under a cap similar to the lower oil wick “W” in figure 2 of the Gordon Fischer instructions.


http://www.modelahouse.com/tech/speedometer/fischer.html

 

[160B]

Removing the plug for oiling the main shaft at the lower wick and the oiling point for the upper wick on the oval speedometer