Snail mail came through and delivered:
- #25 sprocket with 3/4" bore and 45 teeth. This goes on the wheel axle.
- #25 sprocket with 5/8" bore and 18 teeth. This goes on the differential axle, and this sprocket shares a chain with the wheel axle sprocket.
- #25 sprocket with 5/8" bore and 24 teeth. This goes on the differential axle, and it shares a chain with the flywheel axle.
The first and third sprockets need to have keyways cut out. Joe at the machine shop in Emerson will help us tomorrow at 10am to broach these keyways.
Reading:
- The WaterRower is a rowing machine that uses liquid water and a spinning paddle as the drag mechanism. Its performance monitors incorrectly calculate distance rowed by simply multiplying the linear displacement of the handle by 5. This means that a rower can increase perceived velocity by rushing the recovery and pulling faster rather than harder.
- A rower's power is proportional to the cube of velocity: . For example, rowing at a 2:00 per 500m pace requires twice as much power compared to rowing at a 2:30 pace.