# What size of torsion spring do I need?

## What size of torsion spring do I need?

Garage Door Torsion Spring Size Chart

Length of 10 coils (in Inches) | Length of 20 Coils (in Inches) | Wire Size |
---|---|---|

1 1/4 | 2 1/2 | .125 |

1 3/8 | 2 3/4 | .135 |

1 7/16 | 2 7/8 | .142 |

1 1/2 | 3 | .148 |

### Are high cycle garage door springs worth it?

By switching over to a high cycle garage door spring, you can double or even quadruple the lifetime of your garage door springs. This will also help you avoid more garage door repairs and replacements in the future.

**What is torsional spring rate formula?**

Rate Per Degree = Rate Per 360 Degrees / 360. Rate Per Degree = 2.988 / 360. Rate Per Degree = 0.0083 pounds / degree. Remember when designing your torsion springs, the wind direction of the torsion force is critical.

**Are longer torsion springs better?**

Long Life Torsion Springs By using larger springs, you can, in most cases, quadruple your spring life while only doubling the cost of the springs. You will also avoid extra work down the road. The industry standard is 10-15,000 cycles for new doors.

## How many torsion springs do I need?

Torsion spring systems can use one or two springs. As a rule of thumb, a single garage door takes one torsion spring. A double-wide garage door takes two springs. However, if you have an exceptionally heavy single door, you may need two torsion springs.

### How many turns do you wind a torsion spring?

A) The amount of turns required on your springs depends on the height of your garage door. If your door is 7ft high then we recommend starting off at 31 Quarter turns on each springs. If you have an 8ft door then start at 34 Quarter turns.

**How many cycles should a garage door spring be?**

10,000 cycles

The average garage door spring, if correctly installed, should last about 10,000 cycles of opening and closing. If you only go in and out of your garage once a day, that means you should expect a broken garage door spring around 14 years after the spring is first installed.

**Is a longer garage door spring stronger?**

Springs That Are Too Big Can Damage the Garage Door Opener When garage door springs are too large, they provide more strength than the door needs. It will open with too much force, rolling up very quickly and compromising its safety.

## How do you measure torsion spring length?

How to Measure a Torsion Spring

- Measure the spring wire diameter, preferably to 3 decimal places for accuracy using calipers.
- Measure the outside diameter of the coils.
- Measure the leg lengths of the spring.
- Measure the body length by taking the overall end-to-end length of the coil stack.

### What is torsional stiffness of spring?

is a constant with units of newton-meters / radian, variously called the spring’s torsion coefficient, torsion elastic modulus, rate, or just spring constant, equal to the change in torque required to twist the spring through an angle of 1 radian.

**Can garage door springs be too strong?**

Springs That Are Too Big Can Damage the Garage Door Opener It will open with too much force, rolling up very quickly and compromising its safety. Kids or even unprepared adults could be knocked over by the sudden force when they try to open it.

**What do the colors mean on torsion springs?**

The color code on a torsion spring indicates whether it is a “right wind” or “left wind” spring, with black indicating right wind and red indicating left wind. Beyond that the torsion spring is color coded so that technicians can determine the thickness, or gauge, of the wire.

## How many turns on a 7ft garage door spring?

If you didn’t get a recommendation, perform 30 quarter turns for a 7-ft. -tall door and 36 quarter turns for an 8-ft. -tall door.

### How many turns goes on a spring for a standard 7 foot high door?

A rule of thumb with springs is that four quarter turns equals a full revolution and the spring needs to be tightened a full revolution for every foot of door height (e.g. 7-1/2 foot door = 7 revolutions +2 (30 quarter turns).

**How many turns on a garage door spring chart?**

Garage Door Torsion Spring Winding Chart

Door Height | Quarter Turns | Full Turns |
---|---|---|

6’6″ | 28 | 7 |

7′ | 31 | 7 3/4 |

7’6″ | 32 | 8 |

8′ | 35 | 8 3/4 |

**What happens if I use a longer torsion spring?**

## What happens if garage door spring is too strong?

Strong Springs If your springs are too strong, and if you wind the springs the correct number of turns or adjust the cables and S-hooks correctly, the door will not stay on the floor when closed. It will usually not stay in the middle when opened halfway. However, it will stay up when opened fully.

### How do you measure a high lift garage door?

- Measure from the floor to the nearest obstruction on the ceiling (ex. 144 inches)
- Measure the rough opening height of your door (ex.
- Subtract 12 inches from that figure to account for the spring line (144-96-12=36 inches)
- The most high lift you can use in the example above is 36 inches or 3 feet of high lift.

**How do you calculate rotational stiffness?**

How do I calculate rotational stiffness? To calculate rotational stiffness: Divide the applied moment by the angle of rotation.

**What is torque in torsion spring?**

Torque is: force * arm. M = F * A. The force of a torsion spring is measured at a half leg length – the longer out on the leg the force is applied, the less force the torsion spring will deliver. The angle of rotation is measured from the unloaded position.

## What kind of torsion spring do I Need?

The most common size is 728(700=wire gauge, 28=length of spring). A 300 series is a heavy duty spring and 900 series are lightweight springs. Extension springs for a sectional door are measured in color coding and length of spring. The color painted on spring determines the wire gauge and whatever the length of spring is. Determine the spring size

How many turns on a garage torsion spring? A rule of thumb with springs is that four quarter turns equals a full revolution and the spring needs to be tightened a full revolution for every foot of door height (e.g. 7-1/2 foot door = 7 revolutions +2 (30 quarter turns). Click to see full answer.

### How to calculate the torque of spring?

Torsion Spring Calculator. Fast and Easy Torsion Spring Calculations; The Springulator® is an easy-to-use, robust torsion spring calculator tool. With only a few required fields of input, the Springulator lets you check the stress of your torsion spring and determine a variety of size and design data.

**How to measure a broken garage door torsion spring?**

Measure out 20 coils Count out 20 coils on your torsion spring and measure them with your tape measure.