The GreyT Elevator (Cascade) is compatible with any gearbox that has 1/2" hex output and mounting holes that are inline and 1/2" to 1" pitch from the output.
Gearboxes that do not meet these requirements will need custom mounting solutions.
Extra mounting holes can be easily added through the use of 1" x 1" x 0.090" Aluminum Angle, or any other Aluminum Angle.
The WCP Single Stage Gearbox Front Plate has a 2x2 grid of tapped holes and clearance holes that can be used for mounting. In the image below, the holes marked in green are tapped and the holes marked in orange are clearance for #10-32.
The clearance holes marked in orange have a 3/8" c-bore that sits on the inside of the gearbox. If you intend to use these holes for mounting the gearbox, the Front Plate will have to be mounted before the gearbox can be assembled.
For more information regarding gear reduction for the WCP Single Stage Gearbox, see the section labeled Ratio Options.
An example gearbox that is used for the assembly steps in this manual is the .
The tables below list possible unloaded speeds for the GreyT Elevator (Cascade). All unloaded speed units listed below are in in/s.
The following ratio options are recommended for light lifting applications, meaning a maximum of 45 lbs. If you are using this elevator for climbing, check the Heavy Lifting Ratios for more options.
The Single Stage Gearbox is the simplest option when choosing how to power your GreyT Elevator. The simplicity of the gearbox allows you to swap between 3 ratios by replacing the pinion on the motor.
This option is perfect for light lifting applications. If you plan on lifting the weight of a robot with the elevator, it is recommended to add more reduction through the use of VersaPlanetary Gearboxes.
| Gear Ratio | Unloaded Speed |
|---|---|
| Gear Ratio | Unloaded Speed |
|---|---|
| Gear Ratio | Unloaded Speed |
|---|---|
The following ratio options are recommended for heavy lifting applications, meaning a maximum of ~155 lbs. This should be enough for a fully weighted robot, including bumpers and battery. If you plan on lifting any more than that, you will have to adjust the ratio of the gearboxes.
When hanging with the GreyT Elevator, only use the 1st Stage, or whatever stage is attached to the chain. Using the other stages may cause the string to slip or even snap.
This option requires the use of a planetary gearbox to increase the gear ratio to something capable of lifting up to 155 lbs. If you're lifting something less than the maximum weight, the ratio can be adjusted down by changing the planetary gear ratio.
| Planetary Gear Ratio | Overall Gear Ratio | Unloaded Speed |
|---|---|---|
| VersaPlanetary Gear Ratio | Overall Gear Ratio | Unloaded Speed |
|---|---|---|
| VersaPlanetary Gear Ratio | Overall Gear Ratio | Unloaded Speed |
|---|---|---|
5.00:1
110 in/s
5.45:1
101 in/s
6.00:1
91.7 in/s
5.00:1
124.3 in/s
5.45:1
114 in/s
6.00:1
103.6 in/s
5.00:1
104.1 in/s
5.45:1
95.4 in/s
6.00:1
86.7 in/s
4:1
20.00:1
27.5 in/s
4:1
21.82:1
25.2 in/s
4:1
24.00:1
22.9 in/s
4:1
20.00:1
31.1 in/s
4:1
21.82:1
28.5 in/s
4:1
24.00:1
25.9 in/s
4:1
20.00:1
26.0 in/s
4:1
21.82:1
23.8 in/s
4:1
24.00:1
21.7 in/s
