# Stages sb20 calibration problems

**URL:** <https://www.trainerroad.com/forum/t/stages-sb20-calibration-problems/70413>\
**Category:** Equipment\
**Tags:** bike, trainer\
**Created:** [March 7, 2022, 10:09pm UTC](https://www.trainerroad.com/forum/t/stages-sb20-calibration-problems/70413 "2022-03-07T22:09:16Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![toyman](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/toyman/32/677_2.png) [@toyman](https://www.trainerroad.com/forum/u/toyman)\
**Post date:** [March 7, 2022, 10:15pm UTC](https://www.trainerroad.com/forum/t/stages-sb20-calibration-problems/70413/2 "2022-03-07T22:15:47Z")

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Not sure if this is related, but there is a long thread on SB20 accuracy problems.  
Calibration values did not come up in that thread, so you may be seeing something else.

> [@Bang on wrong! What is going on? (Assioma vs SB20)](https://www.trainerroad.com/forum/t/bang-on-wrong-what-is-going-on-assioma-vs-sb20/69976):
>
> (Edit after figuring it out) We now know what is the problem: Cranks are affected from the Platform Center Offset (PCO). Meaning where you push on the pedal matters. Very easy to test and demonstrate. Google for videos of this test.

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_[View the full topic](https://www.trainerroad.com/forum/t/stages-sb20-calibration-problems/70413)._