The stretch of an extension spring is always the door height.
How many turns for garage door torsion spring.
This completes a total of seven spring turns adequate for a standard garage door.
Measure a length of the spring then divide by the number of coils within that length.
Multiply the wire diameter by the total number of coils in the spring.
After winding the spring you may need to add or subtract a quarter turn or more.
When you count 30 turns you should know that you have completed the remaining five turns.
Number of turns needed to wind a torsion spring.
We will see with you what.
Multiply the number of turns by the wire diameter to find spring growth.
If you experience problems during the installation of your garage door contact us.
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To help you make an enlightened choice when purchasing your new garage door contact us.
In case of doubts on how many times you need to turn the spring contact a technician for guidance.
On standard lift doors the formula is dh dc 1 or the door height in inches divided by the drum circumference in inches plus one.
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