It is not uncommon to have two different size springs.
Single garage door torsion spring.
Counter balance the weight of the garage door.
The bottom of the cable is attached to a bracket that wraps around the front of and outside the vertical track.
If the garage door has two springs measure each spring individually.
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Use this method if the door worked correctly before the spring s broke and the garage door has not been tampered with.
Another example is the clopay ez set torsion spring system for garage doors.
Garage door torsion springs 1 75 pair with non slip winding bars coated torsion springs with a minimum of 10 000 cycles 0 207x1 75 x24.
Garage door in many cases will dictate how many springs are needed for your garage door if the garage door is a single car door either 8 7 or 8 8 made of aluminum or other lightweight material then it will.
When the door is closed and at rest the torsion spring stores enormous amounts of energy and when you want the door to open the spring helps by uncoiling and releasing that energy.
Just beyond the end bearing plate is the cable drum.
Wire x 1 75 in.
L torsion springs in brown left and right wound pair for sectional garage doors.
On these the cable often runs on the front of the cable drum.
D x 22 in.
Require only one spring.
One spring systems utilize a larger spring that puts added stress on the other garage door system components.
Typically using a single spring instead of two will save just two or three dollars.
If you have very large heavy door then two or more springs will be required some very heavy wood doors may require 3 or even 4 springs to provide enough lifting strength to.
Many builders install one spring on garage door when they install the door.
To measure the torsion springs follow each of the following steps carefully.
D x 31 in.
L torsion springs in orange right wound single for sectional garage door.
Torsion springs sit against the wall over the garage door.
Many garage door installers avoid using two torsion springs when they install a new door in order to save money at the time.
Wire x 2 in.