# Advice on crank based power meter

**URL:** <https://www.trainerroad.com/forum/t/advice-on-crank-based-power-meter/11526>\
**Category:** Equipment\
**Tags:** power-meter\
**Created:** [February 11, 2019, 12:19pm UTC](https://www.trainerroad.com/forum/t/advice-on-crank-based-power-meter/11526 "2019-02-11T12:19:57Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![pjohalloran](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/pjohalloran/32/12890_2.png) [@pjohalloran](https://www.trainerroad.com/forum/u/pjohalloran)\
**Post date:** [February 11, 2019, 12:19pm UTC](https://www.trainerroad.com/forum/t/advice-on-crank-based-power-meter/11526/1 "2019-02-11T12:19:57Z")

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I’m looking for a crank based power meter.

Some offer versions with and without chain rings.

For example the stages Ultegra 8000 version.

If I get the version with chain rings and the chain rings wear out, is the power meter any use anymore?

Thanks.

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**Author:** ![grenhall](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/grenhall/32/176321_2.png) [@grenhall](https://www.trainerroad.com/forum/u/grenhall)\
**Post date:** [February 11, 2019, 12:21pm UTC](https://www.trainerroad.com/forum/t/advice-on-crank-based-power-meter/11526/2 "2019-02-11T12:21:15Z")

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What are you looking for in regards to advice? You can switch out chainrings on the Stages.

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**Author:** ![pjohalloran](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/pjohalloran/32/12890_2.png) [@pjohalloran](https://www.trainerroad.com/forum/u/pjohalloran)\
**Post date:** [February 11, 2019, 12:25pm UTC](https://www.trainerroad.com/forum/t/advice-on-crank-based-power-meter/11526/3 "2019-02-11T12:25:45Z")

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Yeah pretty much can I change chain rings on the crank based power meters such as the dual sided stages.

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**Author:** ![grenhall](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/grenhall/32/176321_2.png) [@grenhall](https://www.trainerroad.com/forum/u/grenhall)\
**Post date:** [February 11, 2019, 12:29pm UTC](https://www.trainerroad.com/forum/t/advice-on-crank-based-power-meter/11526/4 "2019-02-11T12:29:32Z")

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Here you go (official support):

> **[Can I change the chainrings on a Stages Power LR system?](https://support.stagescycling.com/en/support/solutions/articles/11000056680-can-i-change-the-chainrings-on-a-stages-power-lr-system-)**
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> Yes, the chainrings are able to be replaced or swapped to other compatible rings in different chainring sizes by the end user. To swap the chainrings, please be sure to remove the right side battery door before removing the big chainring. Not...

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**Author:** ![pjohalloran](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/pjohalloran/32/12890_2.png) [@pjohalloran](https://www.trainerroad.com/forum/u/pjohalloran)\
**Post date:** [February 11, 2019, 12:31pm UTC](https://www.trainerroad.com/forum/t/advice-on-crank-based-power-meter/11526/5 "2019-02-11T12:31:31Z")

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Thank you!