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FRC Build System
  • Overview and Features
    • Stage Tube Lengths
    • Tubing Hole Pattern
  • General Info
    • Kit Contents
      • Complete Kits
      • Individual Components
      • Ratio Kits
    • Ratio Options
      • Custom Gear Ratios
    • Configurations
  • Assembly Instructions
    • Getting Started
    • Bottom Block
    • Top Block
    • Base Gearbox
      • Step 1-5
      • Step 6-10
    • Base Gearbox with Brake
      • Step 1-5
      • Step 6-11
    • Base Gearbox with Ratchet
      • Step 1-5
      • Step 6-11
    • Base Gearbox (Flipped)
      • Step 1-5
      • Step 6-11
    • Final Assembly
  • Applications
    • Mounting
      • External String
      • Internal String
    • Hooks
    • Combined Gearbox
  • Misc
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  1. General Info
  2. Ratio Options

Custom Gear Ratios

The table below lists possible recommended gear ratios and associated free speeds for the GreyT Telescope. The first row shows the possible gear sets for the first stage. The first column shows the possible gear sets for the second stage. All free speed units are in/s.

All speeds were calculated using the included 1" OD GreyT Telescope string drum.

9:54

10:52

11:52

12:52

28:44

33.3 in/s

38.4 in/s

42.3 in/s

46.1 in/s

26:46

29.6 in/s

34.1 in/s

37.5 in/s

41.0 in/s

24:48

26.2 in/s

30.2 in/s

33.2 in/s

36.2 in/s

22:50

23.0 in/s

26.6 in/s

29.2 in/s

31.9 in/s

20:52

20.1 in/s

23.2 in/s

25.5 in/s

27.9 in/s

18:54

17.4 in/s

20.1 in/s

22.1 in/s

24.2 in/s

8:54

9:54

10:52

11:52

12:52

28:44

35.4 in/s

39.9 in/s

46.0 in/s

50.6 in/s

55.2 in/s

26:46

31.5 in/s

35.4 in/s

40.8 in/s

44.9 in/s

49.0 in/s

24:48

27.8 in/s

31.3 in/s

36.1 in/s

39.7 in/s

43.4 in/s

22:50

24.5 in/s

27.6 in/s

31.8 in/s

35.0 in/s

38.2 in/s

20:52

21.4 in/s

24.1 in/s

27.8 in/s

30.6 in/s

33.4 in/s

18:54

18.6 in/s

20.9 in/s

24.1 in/s

26.5 in/s

28.9 in/s

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Last updated 10 months ago