Sign Rotator Help Page
If you are new to the use of sign rotators we are happy to help you. Below are the most important considerations when looking to add motion to your sign.
- Key considerations for rotating a sign
- Outdoor sign installation types
- Maintenance
- Electrical specs and wiring
- Best practices for longer sign rotator life
- Sign Rotator belt drive or chain drive?
- Sign design and rotator accessories
Key Considerations for rotating a sign
Wind: The first thing to consider is wind loading on a sign. Just like sizing the sign pole, you also need to size the rotator to ensure it is capable of sustaining high winds. For very large signs or tall signs, it is necessary to use a support roller system in the bottom of the sign, and the rotator mounted high up in the top of the sign. We call these Figure 1 installations.
Sign height: A tall sign will create more bending on the rotator shaft than a short sign. (see formula for more information)
For example the (V) for a 4ft tall x 8ft wide sign = 32 sq ft x 2 = 64. (V) for an 8ft tall x 4ft wide sign = 32 x 4 = 128. The taller sign requires a rotator with a larger shaft and bearings to support the higher wind loading of the taller sign
Balance: An out of balance sign will stall much easier than balanced sign. Out of balance weight will also shorten the life of the bearings, belts, support rollers, and motor.
Rotator Type: Where do you want to place the rotator?
Wind formula
A 100 sq ft sail may only weigh a few pounds but will generate over 1000 lbs in a 75 mph wind! Signs too can be subject to huge wind loads. These cause a bending load on the sign pole or rotator shaft/bearings.
For example the (V) for a 4ft tall x 8ft wide sign = 32 sq ft x 2 = 64. (V) for an 8ft tall x 4ft wide sign = 32 x 4 = 128. The taller sign requires a rotator with a larger shaft and bearings to support the higher wind loading of the taller sign