Bulldozer Geardown Conceptual Calculations
Core Calculations
Roller chain and sprocket.
From Roller Chain Strength Table - the working strength of 100 pitch chain is 5000 lb. The 15,000 Inch Pound Motors provide 3x this force at 1" radius. For us to allow operation within working strength of single chain - we need to use a 3" radius sprocket, where force will be 1/3 of the rated 15,000 lb at 1" radius. this indicates that we would go from 3" to 6" sprocket to make everything fit:
Designs
1
motor
- 1-7/8" shaft
- 13T 80# sproket 1-7/8" bore 2.3285" O.R.
box
- 2" shaft
- 22T 80# sproket 2" bore 3.79" O.R.
- 11T 100# sproket 2" bore 2.504" O.R.
- 3" shaft
- 25T 100# sproket 2-15/16" bore 5.3225" O.R.
- 1.692:1
- 2.272:1
3.84
2
motor
- 1-7/8" shaft
- 14T 80# sproket 1-7/8" bore
box
- 2" shaft
- 22T 80# sproket 2" bore
- 11T 100# sproket 2" bore
- 3" shaft
- 25T 100# sproket 2-15/16" bore
- 1.571:1
- 2.272:1
3.57
3
motor
- 1-7/8" shaft
- 13T 100# sproket 1-7/8" bore 2.9105" O.R.
box
- 2" shaft
- 25T 100# sproket 2" bore 5.3225" O.R.
- 11T 100# sproket 2" bore 2.504" O.R.
- 3" shaft
- 25T 100# sproket 2-15/16" bore 5.3225" O.R.
- 1.923:1
- 2.272:1
4.37
4
motor
- 1-7/8" shaft
- 13T 100# sproket 1-7/8" bore 2.9105" O.R.
box
- 2" shaft
- 25T 100# sproket 2" bore 5.3225" O.R.
- 11T 100# sproket 2" bore 2.504" O.R.
- 3" shaft
- 36T 100# sproket 3020 3. taper bore 7.5625" O.R.
- 1.923:1
- 3.272:1
6.29
5
motor
- 1-7/8" shaft
- 11T 100# sproket 1-7/8" bore 2.505" O.R.
box
- 2" shaft
- 25T 100# sproket 2" bore 5.3225" O.R.
- 11T 100# sproket 2" bore 2.504" O.R.
- 2-15/16" shaft
- 22T 100# sproket 2-15/16" bore 4.72" O.R.
- 2.272:1
- 2:1
4.54
6
11
45
