Any water or grit flung off the tire will travel tangentially, i.e. prependicular to the wheel radius. That's why you often need to attach a mud flap on the end of the front fender if you want to keep water off your feet, and on the rear fender to keep spray off any riders behind you. Back when I was doing a lot of training here in Vancouver, anyone who showed up for a winter group ride without mud flaps would get an earful.
Brian Samson Vancouver, BC, Canada
On 31-Mar-08, at 2:31 PM, Carb7008@cs.com wrote:
> I put some aftermarket fenders on one of my rides...as much to
> minimize grit
> thrown-up by the front wheel onto chain as rain protection. In this
> former
> reason, do objects thrown from the tires follow the line of wheel
> radius or is
> there another directional component dependent on rotational velocity?
>
> Jack Romans
> Sacramento, Calif