As with the vertical lift doors the formula for the number of turns on the springs is complex.
Winding chart garage door torsion spring turn chart.
Use the following chart to determine the strength of each spring as measured in inch pounds per turn ippt.
The formulas for determining the number of turns to wind a torsion springs is based on the drum number door height and high lift dimension which is the distance from the top of the door to the center of the horizontal track.
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Garage door spring wind direction color chart.
In most cases you can determine the wind of your garage door torsion spring by using the color coded system on the cones at the end of the spring.
Finding the right size springs is a crucial part of repairing your garage door and ensuring it lasts for years to come.
If you cannot make an exact match it is better to be one or two ippt lower and.
Your garage door requires a specific total ippt which can be achieved by using one or multiple springs.
That is unless it s a reverse torsion system which we are not going to discuss right now.