Pronto Track Installation
Accurate spacing is the key to a good Pronto Changeable Letter system. Refer to the diagram shown here to select the method of track installation you prefer and determine the total height of your sign. The use of dual track automatically spaces the rows and reduces the number of bars required. If row spacing needs to be greater use a combination of top and bottom track. First lay out all track on the background and tack it down with tape just to get an idea of the spacing. Measure twice and install once rule applies here. Always check to make sure that all retainers holding the background are taken into account when measureing the actual space that you have to work with.
Attaching Track to Plastic
If the surface you are attaching Pronto track onto will expand and contract at somewhat the same rate as the plastic track, installation can be done using either rivets or adhesive. Mark the location for your first bar of track making sure you can remove the marks after the track has been set. Pen works best, but YOU need to test that it will come off. Do not use oil based thinner to remove marks, try denature alcohol or a citrus based remover. Test on a piece of scrap first, the wrong cleaner can cause your plastic / acrylic material to crack or polycaronate to melt.
Drill a hole through the track and background (maximum 8" center to center). To fasten track to 1/8" background, drill .191-diameter hole (#11 drill bit). To fasten track to Â¼" background, drill .219 diameter hole (7/32"drill bit). Insert the Pronto rivet, and then push the pin to its closed position. (Drill at a minimum of 1800 RPM using a #11 drill bit with a 30* angle and 0* rake.) Go slow or you will crack the material. A dull drill bit works the best.
Apply a steady line of adhesive, such as WELD-ON, to the back face of the bar of track. This is a adhesive only available from select sources and is ment for this type of job. Tape in place until adhesive has set up completely. Use a high grade clear tape to hold the track to the background material, don't use the cheap no name/brand. Contact us to obtain the proper adhesive. Do not use over the counter products!
Attaching Track to Wood or Metal
If the surface you are attaching Pronto track onto will not expand or contract (ie. wood or metal) at the same rate as the plastic track, we recommend the following installation procedure:
- Drill or route horizontal oblong or oversized holes in the track as in the illustration above.
- Using a sheet metal screw, because of its squared shoulder; put the screw in the center of the horizontal hole.
- Do not tighten the screw. Leave it approximately Â¼ to Â½ turn loose.
- When all the screws are in the track you should be able to wiggle horizontally as small distance.
- Now the track is able to expand or contract with temperature changes, and shouldn`t buckle or warp.
|LETTER VISIBILITY CHART|
|LETTER HEIGHT|| DISTANCE FOR
|3 in.||30 ft.||100 ft.|
|4 in.||40 ft.||150 ft.|
|6 in.||60 ft.||200 ft.|
|8 in.||80 ft.||350 ft.|
|9 in.||90 ft.||400 ft.|
|10 in.||100 ft.||450 ft.|
|12 in.||120 ft.||525 ft.|
|15 in.||150 ft.||630 ft.|
|18 in.||180 ft.||750 ft.|
|24 in.||240 ft.||1,000 ft.|
|30 in.||300 ft.||1,250 ft.|
|36 in.||360 ft.||1,500 ft.|
|42 in.||420 ft.||1,750 ft.|
|48 in.||480 ft.||2,000 ft.|
|54 in.||540 ft.||2,250 ft.|
|60 in.||600 ft.||2,500 ft.|
|The color and contrast of the letter can reduce visibilty.|