Favero Assioma DUOs Suddenly Erratic?

Mar 30, 21 15:03

Post #1 of 15 (2134 views)

Crowd sourcing here because I'm having a hard time getting a response from Favero customer service. I've used the DUOs for almost 2 years with no issues, but in the past week the power readings have become very erratic. One ride they were reading about 20 watts high, one ride they were all over the place, fluctuating up to 100W from second to second when I was pedaling steady on the trainer, one ride they were reading 15-20 watts low. I dual record for Zwift vs. my Kickr, and they've always been spot on until recently.

Firmware's updated, I've done the zero offset manually. Anyone else have issues like this?

Re: Favero Assioma DUOs Suddenly Erratic? [adnama] [ In reply to ]

Mar 30, 21 15:20

Post #2 of 15 (2126 views)

I'd remove them from the bike. Clean the threads on the pedal, clean the threads/interface on the crank, apply some grease, then reinstall them. (Making sure there's a small air-gap between the crank and the pedal pod). Do a few short sprints getting all stompy on them for a few minutes. Do a manual zero. Then see how things go from there.

Shane Miller - GPLama
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Re: Favero Assioma DUOs Suddenly Erratic? [adnama] [ In reply to ]

Mar 30, 21 17:53

Post #3 of 15 (2083 views)

Can you isolate it to one of the pedals? For example, does your pedal balance swing all over the place?

Re: Favero Assioma DUOs Suddenly Erratic? [exxxviii] [ In reply to ]

Mar 30, 21 19:20

Post #4 of 15 (2047 views)

Good call - looking in Garmin Connect it's definitely the left pedal causing the problem - frequently going to 0. Thanks- that helps to narrow it down.

Re: Favero Assioma DUOs Suddenly Erratic? [gplama] [ In reply to ]

Mar 30, 21 19:22

Post #5 of 15 (2042 views)

Thanks - love getting a response from the expert! Trying this -- getting "all stompy" is my specialty.

Re: Favero Assioma DUOs Suddenly Erratic? [adnama] [ In reply to ]

Mar 31, 21 2:54

Post #6 of 15 (1994 views)

My total seat-of-the-pants assessment is that you need to service your pedal bearings. This was the behavior I got on my old P1 pedals when the bearings were shot. (It has not happened with my Assioma pedals yet.) If you have had the Assioma pedals for 2 years, you could have put plenty of miles on them to affect bearing wear & performance. Fortunately, the bearings are owner-serviceable on the Assioma pedals.

Re: Favero Assioma DUOs Suddenly Erratic? [exxxviii] [ In reply to ]

Mar 31, 21 9:50

Post #7 of 15 (1930 views)

and its not very expensive:
https://cycling.favero.com/...lseal-endcap-assioma

https://www.strava.com/athletes/13873052

Re: Favero Assioma DUOs Suddenly Erratic? [Geraldaut] [ In reply to ]

Mar 31, 21 9:55

Post #8 of 15 (1927 views)

Thanks for the link. I may just order a set proactively for when my pedals eventually need servicing.

Re: Favero Assioma DUOs Suddenly Erratic? [exxxviii] [ In reply to ]

Mar 31, 21 11:15

Post #9 of 15 (1895 views)

Shipping for Favero's Assioma pedal bearing kit is very high from Italy. (Almost as much as the bearing kit itself.)

Has anyone found a US source with a decent price for the bearing replacement kit?

Re: Favero Assioma DUOs Suddenly Erratic? [exxxviii] [ In reply to ]

Mar 31, 21 13:17

Post #10 of 15 (1856 views)

The bearings is (probably) from Xpedo, which might be easier to source?

https://xpedo.com/...arts/x3-bearing-kit/

Re: Favero Assioma DUOs Suddenly Erratic? [exxxviii] [ In reply to ]

Mar 31, 21 18:35

Post #11 of 15 (1802 views)

Thanks -- did just this. Replaced the bearings and actually the pedal body, cleaned everything up, reinstalled, did a ride with a few sprints, and ran a few manual zero offsets through the app as opposed to my Garmin. It seems to have been resolved and is back to reading spot on vs. my Kickr. Thanks for the help, all!

Re: Favero Assioma DUOs Suddenly Erratic? [adnama] [ In reply to ]

Mar 31, 21 19:03

Post #12 of 15 (1790 views)

Wow, that was quick. You got bearings and a pedal body in a day? I still haven’t ordered for a toro active service because I haven’t found a US source that is not crazy expensive.

Re: Favero Assioma DUOs Suddenly Erratic? [exxxviii] [ In reply to ]

Mar 31, 21 20:34

Post #13 of 15 (1771 views)

I actually had purchased the pedal body replacement kit a while back as a precaution bc I was having some visible rusting from riding the bike outside on a balcony too much. But Power Meter City shipped them quickly: https://powermetercity.com/...lacement-pedal-body/

Re: Favero Assioma DUOs Suddenly Erratic? [adnama] [ In reply to ]

Apr 7, 21 10:41

Post #14 of 15 (1629 views)

Thanks for the tip - Just ordered these $55 shipped.

Re: Favero Assioma DUOs Suddenly Erratic? [Geraldaut] [ In reply to ]

Apr 24, 21 13:43

Post #15 of 15 (1506 views)

Anyone able to source a Canadian distributor for this? Much as to the US, shipping to Canada costs almost the same as the product itself. I'll take a US vendor who ships to Canada, since it's likely to be cheaper.

The US link in this thread doesn't ship to Canada.

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