here are pics of the custom mounts i made for the best track.
sorry for the huge pics, but i figured you may need to see the detail.
i bent a couple small strips of 2"x 1/8" flat steel and milled out grooves for the bolts to hold them to the track, one piece has only those grooves in it as the lazer has a magnet attached, the other one is for the "receiver" and reset button part, it has 3 grooves in it, 1 in the middle for the eye to pick up the beam, and the 2 on the outside to mount the box to. i used small self tapping screws to hold it on.
the grooves allow a huge amount of adjustability, the bar to break the beam is a short piece of angle aluminum the i cut one side off of after the first inch. the photo shows a piece about 6" long, we had to cut off about 2 1/2" at the race as it was causing a pendulum effect. you will also need to shorten the starting pegs by about 3/4" and add a strip of adhesive foam to the back (top) of the gate where it comes together when the pegs are down.
John helped alot during this process at the race. also, the spring must be relocated to one of the starting pegs for all of this to work. if you have questions PM me, it sounds complex, but its not.
pic of the receiver mount.
pic of the lazer mount, not much to see, just like the receiver mount but without the 3 grooves.
pic of the outside of the receiver mount and the aluminum bar i made to break the beam. this bar was too long, a 3 or 3 1/2" bar is plenty. you can also see that if the bar even twitches the timer starts, even a .0001 of movement will cause it to start. or you can adjust it to have a somewhat less hair trigger.
sorry for the huge pics, but i figured you may need to see the detail.
i bent a couple small strips of 2"x 1/8" flat steel and milled out grooves for the bolts to hold them to the track, one piece has only those grooves in it as the lazer has a magnet attached, the other one is for the "receiver" and reset button part, it has 3 grooves in it, 1 in the middle for the eye to pick up the beam, and the 2 on the outside to mount the box to. i used small self tapping screws to hold it on.
the grooves allow a huge amount of adjustability, the bar to break the beam is a short piece of angle aluminum the i cut one side off of after the first inch. the photo shows a piece about 6" long, we had to cut off about 2 1/2" at the race as it was causing a pendulum effect. you will also need to shorten the starting pegs by about 3/4" and add a strip of adhesive foam to the back (top) of the gate where it comes together when the pegs are down.
John helped alot during this process at the race. also, the spring must be relocated to one of the starting pegs for all of this to work. if you have questions PM me, it sounds complex, but its not.
pic of the receiver mount.
pic of the lazer mount, not much to see, just like the receiver mount but without the 3 grooves.
pic of the outside of the receiver mount and the aluminum bar i made to break the beam. this bar was too long, a 3 or 3 1/2" bar is plenty. you can also see that if the bar even twitches the timer starts, even a .0001 of movement will cause it to start. or you can adjust it to have a somewhat less hair trigger.
