When you count 30 turns you should know that you have completed the remaining five turns.
Garage door spring number of turns.
In case of doubts on how many times you need to turn the spring contact a technician for guidance.
The stretch of an extension spring is always the door height.
Measure a length of the spring then divide by the number of coils within that length.
Multiply the number of turns by the wire diameter to find spring growth.
High lift doors rise vertically some times a distance as short as a foot or more sometimes more than half the door height and then the door rides in the horizontal tracks.
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Always convert torsion springs to a spring of equal or greater wire diameter.
The formula for determining the number of turns on these springs is based on door height and drum number.
Number of turns needed to wind a torsion spring.
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