Oar dimensions and sensor positions
Record the geometry of the physical oar, even when you enter Moment/Bend Factor manually.
Edit the correct record
In Oar Settings, select the intended saved oar and open Active Oar details or Selected Oar details → Edit details. Choosing a details target does not change the rowing connection. Check the side, Sculling/Sweep type, model, stiffness source, dimensions and sensor positions. Editing an independent managed copy changes that copy.
- Choose the displayed length unit and enter overall length, inboard and outboard.
- Measure S1 and S2 from the blade tip toward the handle.
- Check the shaft profile and any taper/diameter positions.
- Select measured Cperm or enter a suitable manual Cperm; alternatively choose a direct MBF override.
- Review the Moment/Bend Factor preview and source, then save.
Get sensor locations from photo can help enter positions. Verify its estimates against physical measurements before saving.
Keep the references consistent
| Dimension | Measure |
|---|---|
| S1 and S2 | Blade tip to each sensor position. |
| Outboard | Blade tip to the outboard-facing button reference face. |
| Inboard | The same button reference face to the handle end. |
| Overall length | Blade tip to handle end; inboard + outboard. |
| Taper stations | Distance from blade tip and shaft diameter at that position. |
Use the units displayed by the editor. Stored/uploaded dimensions use meters. Sensor identities and physical positions are separate information: a Bluetooth name does not establish S1 or S2.
Dimensions still matter with an override
A direct MBF override bypasses Cperm and dimensions when calculating the factor. Inboard still converts moment into perpendicular handle-tip force. Dimensions also support the combined oar and boat-motion calculations.
Each new recording saves a snapshot of the dimensions, sensor positions, calibration, manual inputs and applied values. They are sent with the workout and shown under Recorded oar settings during upload and re-analysis. Missing dimensions remain unknown.
Update dimensions and positions whenever they change by more than 0.5 cm. Cperm can be reused for the same shaft with unchanged sensor positions and modest geometry changes. Larger changes, or a sensor move greater than 2 cm, need suitable taper measurements for the shaft model or a new known-weight calibration. Moving or rotating a mount also requires sensor alignment.
Changing dimensions alone leaves an active manual MBF override in place. Saving a new measured stiffness calibration selects measured Cperm and clears both manual Cperm and manual MBF overrides.