Multiply the number of turns by the wire diameter to find spring growth.
Garage door spring number of turns.
Measure a length of the spring then divide by the number of coils within that length.
In case of doubts on how many times you need to turn the spring contact a technician for guidance.
If breakage occurs you can give us this information to produce a replacement spring quickly.
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Multiply the wire diameter by the total number of coils in the spring.
The stretch of an extension spring is always the door height.
The formula for determining the number of turns on these springs is based on door height and drum number.
To help you make an enlightened choice when purchasing your new garage door contact us.
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.
When you count 30 turns you should know that you have completed the remaining five turns.
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