Motorcycle Repair: Speedometer acting strange., sppedo, speedometer

Question
Hey,

Off the bat, thanks a ton for even taking time to read
this. I'll try to make it short and to the point.
Speedometer is acting funny. When I accelerate, the needle
seems to rise slower than I am actually going. When I
deccelerate, the needle seems to fall slower than I am
stopping. I haven't done anything new to the bike.

Make: Honda
Year: 1982
Model: CM450C
Condition: Garaged for 20 years by previous owner,
purchased last summer with only 5K on it. Put on another
4K. Hadn't given me any trouble before this.

Answer
Sppedo's and tacho's of a certain age can get slow to respond.  The fluid in the coupling gets old and causes the damping to increase.  Short of finding a replacement speedometer I don't think you'll be able to fix this, unless you send it out for reapir to a specialist.  Good luck,  Jan