Also Sprach Kirk Davison :
Is there an easy way to adjust a speedometer on a 1982 Bayliner 1950 Capri,
It shows my top speed at 35 but a radar gun is showing 42. I have a 125
Volvo IO. This is a putt around the lake boat and being an old boat there
are a lot of things I would rather put money into than this but if there is
an easy adjustment that would be great.
Kirk

Before you spend any money chasing this problem, make sure that the
speedometer and radar gun are reading the same units. If the speedometer
is in knots and the radar is in MPH, then your readings are pretty close
already. 35 knots == 40.25 MPH.

Dan



--
The Apocalypse is INVISCID!

-- Gary Yngve

(on modeling nuclear explosions with the Navier-Stokes equations.)