Look at the harken page for the different traveler cars - they have dimensions on them as well as the number of bearings required (the smaller cars use fewer bearings). The Harken cars are great but they are suceptible to sand and junk causing them to lock up (as would any traveler car). In the case of the newer captive ball systems (where the bearings stay in the car when it's removed) the tracks are much more sensitive to proper bearing shape. Apparently somewhere I had some debris jam up my travler that caused some tiny little flat spots on a couple of bearings. Those flat spots lead to jams where the bearings recirculate which lead to more flat spotted bearings which lead to more jams....and so on. Eventually, the traveler was very undependable (it's a year old) and it was getting scary to sail downwind with the spinnaker up (since the traveler is your last line of defense). I replaced the bearings and the thing is smoother than I ever remember it.



Yeah...I remember the first time I went "hmmm...how does this come apart"....BWINGGG ... sprinkle sprinkle sprinkle . Most of the brown colored bearings found themselves forever hidden in a recently mulched area of my yard.