Application Notes:

Eliminating Hinge Friction in BestTrack Gates

Is is important to remove the friction from the BestTrack gate. The friction is caused by the hinge knuckles rubbing against the track bottom. When you disassemble, you can see the shiny places where the steel was rubbing on the aluminum.

In the normal BestTrack gate configuration, with manual gate operation, friction is not a problem, partly because the spring force is fairly high, and partly because it is at a maximum when the gate is closed. However, the GRB gate system requires that the spring tension be set at the minimum amount to get the job done. Also, the spring tension is at a minimum when the gate is closed. These factors combine to amplify the effects of the hinge friction, which detracts from the precision of the GRB action.

To remove the gate friction on a new BestTrack, simply put a washer on each of the bolts between the hinge and the gate. Now, the knuckles cannot touch the track, and the gate swings freely.

Prior to 2010, BestTrack gates were made by using nuts and bolts to join the stainless steel piano hinge to the aluminum peg bar. This construction creates another point of friction where the hinge knuckles rub on the peg bar as the gate rotates. Again, the solution is the same: install a washer on each of the joining bolts to provide space between the hinge and the peg bar. You can see the washer in the photo at right.

The BestTrack gates are now being fabricated using very high strength bonding tape. The thickness of the tape prevents contact between the hinge and peg bar, but you will still need the washers between the track and the gate. Lubrication would not be a bad idea, and we recommend lithium grease available at Home Depot. It does not evaporate. The hinge should rotate with no noticable friction.

Forming the Brass Pull Rods

Looping through the hole you drilled in the aluminum peg bar. Note the hole is centered so the loop enters the bolt channel when the gate is closed. Form a nice, smooth full circlle loop. Do not wrap it too tightly around the aluminum.

Looping through the brass crank of the solenoid. Form a nice smooth simple open hook in the rod. Dyke off excess rod length.
Don't do this. Never twist a loop into the brass rod.