> For the complete documentation index, see [llms.txt](https://support.onegiantleap.co.nz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.onegiantleap.co.nz/3.0/kayak/getting-started/how-to-set-the-kayak-power-meter-settings/blade-tip-to-datum-distances.md).

# Left blade tip to LED distance

The distance from the left blade tip to the left datum and the distance from the right blade tip to the right datum.

## Step 1. Measure the distance from the left blade tip to the LED

* Attach the tape measure to the tip of the **left blade** (as shown below).

![](https://3210906295-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LAFl-quJvXSIV-V8Y2Z%2F-LAKe2MXA9oZcODl7DJ2%2F-LAKe6fE3yTp5yzYlV5h%2Fblade-tip.jpg?alt=media\&token=8df05e17-bf95-4e75-aba9-cb4a442f5290)

* Measure the distance from the left blade tip to the LED.
* In the example image below the measurement is 1020 mm.

![Example: Tip to LED is 1020mm](https://3210906295-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LAFl-quJvXSIV-V8Y2Z-782413134%2Fuploads%2FzIJvKCd6my3Ps4mORjar%2Fimage.png?alt=media\&token=217e7d0c-e2d0-4b4f-b361-210322c7ba2f)

## Step 3. Enter the distances into the 'Left blade tip to LED' setting

![](https://3210906295-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LAFl-quJvXSIV-V8Y2Z-782413134%2Fuploads%2FUcs8YFztjTvdDWE62rZI%2Fimage.png?alt=media\&token=4fa40e94-2a11-4ce0-bbcd-010b15a94994)