@kevistraining so have I 
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Further to my post above I am happy to say I have had the usual excellent customer service from Favero and I am being sent a replacement spindle (sensor) for my faulty right pedal.
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FWIW: Over some years I have accumulated three different brand PMs (including Assioma) and each has its proprietary app. All work easily and reliably. Along with these I have Saris, Garmin, Polar, and SRAM AXS proprietary apps. It is a bit much but NBD for me. Iām sure in the not too distant future all interaction will be through your digital assistant, like āHey HAL, Iām going for a ride. Make sure my cycling devices are ready to go.ā Or maybe, āOpen the pod bay doors please, HAL.ā
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I donāt want to āregisterā anything I own, although in certain cases I grudgingly comply when asked to do so by organizations with superior firepower. Everything else I could do perfectly well from my watch if it wasnāt for the requiremen to āactivateā the pedals and click through half a dozen screen of nannying piffle. And yes, nigh-universal requirements for proprietary apps are a damning indictment of sports tech in general. This may have been the push I needed to go back to a Walmart Timex and manual logging.
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Having more issues possibly with my Assiomas. About a month ago they were reading 10-12W low compared to my Sigeyi and my Kickr Core. Today I updated them and did a sweetspot workout and now theyāre reading 20-25W low. I did the calibration in the app and confirmed the correct crank length. Did a calibration on my head unit and confirmed the correct crank length. Iām starting to doubt myself but the Kickr Core numbers felt right for SweetSpot, while the Assiomas were reading anywhere from 20-25W lower. I had always used my Assiomas as the benchmark, but now theyāre reading off from all my other power meters. Not sure if they have a lifespan, got them in 2018.
Iām at an interesting crossroads. Iāve got Assioma Duo Shi with my SPD pedals fixed. I move them between my current road and gravel bikes without much hassle.
I just got a new road bike that has a SRAM with built in power meter. I do 80% road riding and it feels like a waste to not use the Assioma when i have them, but also feels like a waste to have a PM in my crank if iām using the pedal based version for data capture.
I have two logical options:
- Sell the Assioma and put that money into upgrades for the new bike. This would leave me without a PM on the gravel rig.
- Sell the Force Cranks + PM and put that money into a replacement crank and chainring for the roadbike.
The final consideration is cleat choiceā¦ I may end up converting to SPD-SL for road riding in which case swapping pedals doesnt become as simple of an option.
As much as I like my Uno, iāve had to replace the spindle twice, first under warranty the second not. It appears they have a shelf life.
Whatās the longest a spindle has lasted?
Anyone had one longer than 3 years?
(I suppose thereās someone that uses it once a month thatās lasted but Iām thinking of a more common use case, say an average of once a week, so 50 times a year at minimum)
I bought my pedals in 2018 and had gone through 3 replacement spindles by 2020ā¦ but those have now lasted until 2024 without further issues.
I use them everyday in all weathers.
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First spindle lasted a year, the replacement about 4.
Roughly 6000 m a year.
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Purchased my pedals in 2019. No spindle replacements. Last year I replaced the pedal bodies and bearings. I average ~12k kms per year. They have been great 
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I have some bePro pedals (predecessor of Assioma) that I bought in early 2017ā¦ theyāve had new bearings but still on original spindles and still work.
I also have Assiomas that I bought in Jan 2022, which are fine.
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My first one lasted 4 years, just replaced this year because of an issue with the pod. And this was used in the SPD hack on my MTB and on the trainer, so I wouldnāt say it was babied or anything like that.
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What sort of issues have people seen to indicate you need to replace the spindles or pedal bodies. Iāve had my Assiomas since 2017 with no real issues as far as I know. Theyāve been awesome. I have had to oil the springs and loosen the tension and retighten it sometimes to seemingly reset it (when I start to feel some play), but other than that they seem good. Just curious if Iām missing something.
This is why I replaced my pedal bodies
But to be honest after 5 years of fairly heavy use I think they were due to to replaced. Pedal body replacement includes bearings.
Also, the pedals bodies do actually wear over time with lots on clipping in and out. You can notice this as there will be some side to side movement in your shoes when clipped in.
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Silly power readings. Especially in the wet.
For me it was drifting power readings. Iād calibrate them but then one of the pedals would start underreporting power so my L/R balance would start at 50/50 then go to something like 70/30 over the course of a ride.
Thatās the main reason why Iād always recommend going for the DUO over the UNO - they are independent readings so if one goes wacky then you have the other to compare against.
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For me the assioma spd pedals feel extremely loose even when fully tightened. Iāve never seen this mentioned in any reviews which seems odd. I had a friend try mine with his shoes and he said the same thing. It bad enough that I donāt want to use them. I bought the newest version of them in August 2024.
Are you using the cleats that Assioma gave you? They use Xpedo cleats which are NOT the same as SPD. They are similar, but there are differences in how they interface to the pedal.
Also, thereās cleats with more or less float - how much they can freely rotate/slide horizontally.
Lastly, cleats can wear out, especially the plastic ones do if you drag your foot at all.
So buy the Xpeedo cleats with least float (for a secure feeling) or most float (to make it harder to accidentally clip out). See if that resolves your issue.
Iāve actually found the MX assiomas to be more more difficult to clip into compared to my look x-trac that they replaced. I really have to be intentional with pushing down on the pedal. Everything else feels great though.