Spedometer - ahh, its cool and all, but useless.

Tach - now thats useful...

 

I use mine for checking the milage when I put on a XC race. The riders all want to know how long the course is. This way I don't have to go and as a DBR what is the milage. Had the thing on when I did the XC race at Loretta's Lynns a few weeks ago and it was neat to see the fastest speed(42mph), average speed(16.9mph), and total length (43.2 miles) during the race for me.
We also, used it when trail riding in the moutains of Col. to tell when it was time to turn around and make our way back to camp. The stock tank was only able to go 53 miles before hitting reserve. Without it we would have been doing some short rides like the year before.
Do get a different mount, other than the stock plastic one that comes with the unit. Had it for 2 years and still working great.

 

I just want a speedometer to see how fast she'll go.I have a speedometer and a tach and it looks pretty BA. I'd recommend those ultra bright light bulb things too.

 

The speedometer (without the trailtech mounting bracket) can be purchased for around $30 at Wal-Mart (Wally-World).

BTW: the trip odometer is good for guessing if you'll run out of gas in the middle of nowhere.