Ducati Monster Forum

Moto Board => Tech => Topic started by: lifeinohio on January 25, 2010, 12:58:17 PM

Title: speedometer reads slow
Post by: lifeinohio on January 25, 2010, 12:58:17 PM
before I put my Monster away for the winter, I replaced the speedo drive on the front wheel and the speedo cable.  Now it reads too slow(about 15-20 mph), did I get the wrong drive unit?  Is there any alternative(like recalibration)?  OK give me an answer before it gets warm again!!
Title: Re: speedometer reads slow
Post by: Howley on January 25, 2010, 03:28:28 PM
How do you know it's slow?
Title: Re: speedometer reads slow
Post by: Porsche Monkey on January 25, 2010, 05:39:42 PM
Ride faster.
Title: Re: speedometer reads slow
Post by: Speeddog on January 25, 2010, 07:10:29 PM
OK, it's 15-20 mph too slow.

At what speed?

Is it less inaccurate at slow speeds?

Or is it just a 15-20 mph 'offset'?
Title: Re: speedometer reads slow
Post by: numbskull on January 26, 2010, 08:06:31 AM
Strange, since most speedometers indicate a speed that is faster than actual speed.
Title: Re: speedometer reads slow
Post by: Speeddog on January 26, 2010, 08:09:13 AM
I suspect the OP got a drive unit that's for another bike.
Title: Re: speedometer reads slow
Post by: lifeinohio on January 26, 2010, 12:36:10 PM
Quote from: Speeddog on January 25, 2010, 07:10:29 PM
OK, it's 15-20 mph too slow.

At what speed?

Is it less inaccurate at slow speeds?

Or is it just a 15-20 mph 'offset'?
I'm just guessing on the speedo error part, but my 23 mile commute is now about 18 miles.  Is there a different speedo drive for my bike?(1994 900)
Title: Re: speedometer reads slow
Post by: Porsche Monkey on January 26, 2010, 05:22:29 PM
A cable is a cable.  Your drive is wrong.