This completes a total of seven spring turns adequate for a standard garage door.
Garage door spring number of turns.
The formula for determining the number of turns on these springs is based on door height and drum number.
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Multiply the wire diameter by the total number of coils in the spring.
Multiply the number of turns by the wire diameter to find spring growth.
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If breakage occurs you can give us this information to produce a replacement spring quickly.
Number of turns needed to wind a torsion spring.
The stretch of an extension spring is always the door height.
Always convert torsion springs to a spring of equal or greater wire diameter.
Measure a length of the spring then divide by the number of coils within that length.
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