PortaTree Snowmobile Tracks - Manual

PORTATREE TIMING SYSTEMS, INC.
TEL# 508-278-2199 FAX# 508-278-5887
SNOWMOBILE DRAG RACING INSTRUCTIONS
INSTALLATION PROCEDURE
1. Unpack all of the equipment and immediately inspect for shipping damage. Damages should be
immediately reported to the carrier and noted on the carrier’s receipt. Hidden damage should be
documented and shown to the carrier’s representative. Check the contents and match up to the
invoice and packing list.
2. The first track function is to layout the track. The starting line should be selected and temporarily
marked. The starting line will consist of a pre-stage (which you will be using as a stage) and a stage
(which you well be using as a start e.t.) infrared photo cell in both lanes. The connectors are
marked. In snowmobile drag racing the stage (prestage) should be 15 inches before the start e.t.
photo cell. All downtrack detector locations should be measured from the start e.t. photo cell beam
line. The start e.t. photo cell has a reversed output and when used, illuminates the stage light on the
tree constantly.
3. When the starting line is marked, you can mark the 594 and the 660 foot locations by measuring
down the sides of the track. All measurements are from the start e.t. beam location. Use some sort
of stabile marker to mark the track surface at the left side, center, and right side of the track surface
so that if someone hits any of the locations, they can be readily accessed.
4. After the entire track is marked, you can begin locating the detectors. The banner SBL1 reflector
type infrareds will be used at all locations. A reflector stand will be mounted on the outsides of the
track at each of the downtrack locations and should be securely fastened so that they will not be
unsecured while racing.
5. All mounting stands and brackets should be made of very rigid material so as to resist vibration and
flexing. The starting line detectors will be mounted back to back with plenty of adjustment for
moving the detector up/down and left/right.
6. The mph, and finish infrareds should be mounted in the middle of the track surface. Run a pull line
tight across the track and align the photo cells so that they are even with the outboard reflectors and
the marker line.
7. The wiring of the track can now begin. All wires for the starting line are pre-wired at Portatree and
only need to be routed to their respective locations.
8. The Christmas tree should be located about 25 to 30 feet out in front of the starting line. The cable is
long enough to give you the distance option. An extension cable can be purchased locally if you
wish to locate the tree further down the track.
NOTE: LIGHTNING DAMAGE IS THE MAJOR CAUSE OF TIMING SYSTEM FAILURE
AND IT IS MAINLY CAUSED BY WIN LIGHTS. PLEASE MAKE EVERY EFFORT TO
PROTECT YOUR SYSTEM FROM LIGHTNING AND COSTLY DOWNTIME. ALSO MAKE
SURE ALL PHOTO CELLS, PORTATREE PROFESSIONAL, CHRISTMAS TREE AND
TIMESLIP PRINTER AND/OR SCOREBOARDS ARE DISCONNECTED WHEN NOT IN
SE. U