I’m another user stumbling over the left/right problem with Assioma Duo (Shi). 3 months ago I had a cartilage surgery - 8 weeks of crutches so I’m just 4 weeks walking without crutches.
My left leg is too weak to walk down stairs without a handlebar. I can walk up with some pain. My left tigh is about 4cm less circumference than my right, while my upper leg is a staggering 8cm less circumference. My right leg has been much better since years - as my left leg suffered already 3 ACL replacements, meniscus tears and well now lately 8cm² of replaced cartilage. Plus there is still bone bruise and minor swelling.
My first ride was 50/50 after which I contacted Assioma and they sent me the following info (nothing personal in it so I think it’s fine to publish):
I checked the status of this Assioma DUO remotely - when a new ticket is opened and the sensors are connected to the app Favero Assioma we are able to check some internal parameters of the sensors - but I wasn’t able to see any data after the submission of the ticket.
In this case, in order to better understand the situation, I would kindly suggest following these steps:
- reinstall both pedals being careful that the sensor is not touching the crank and try to add at least one washer for each side (please see Chapter 7. Fixing the pedals to the crank-arms at the following link: Manuals - Google Drive);
- verify that the cleats don’t make contact with the sensor;
- perform 2-3 calibrations through the app making sure that the bike is steady and the shoes unclipped from the pedals;
- do another short ride session including some hard sprints and progressions (for a correct mechanical adjustment);
- disconnect and connect again both sensors so that I receive the latest saved values.
In addition, would you be so kind as to send me some pictures of both pedals (installed on your bike) following the instructions in the attached PDF document?
Finally, in order to complete my remote analysis, I kindly ask you to temporarily set your Assioma DUO as Assioma UNO (using the app Favero Assioma), to perform other 2-3 manual zero offsets, and to have a ride.
Please let me know the results of the suggested operations and if Assioma works correctly when converted into Assioma UNO.
I replaced the default sram spacers on both sides with the Assioma ones which are a tiny bit thicker - the distance should be okay however. The sram spacer on the Force 22 cranks can now nearly fit into the gap (or better it fits 3/4 of the way around). The cleats/shoes are a long way in the distance so no contact either.
I re calibrated the pedals 3 times and went out for a long ride - though without any sprints.
I don’t understand why they cannot see my data - as I recalibrated with Assioma app, I wrote the ticket using my PC however (after finding out the pedal serial numbers by connecting the pedals in the app)
The pedals now went from 50/50 to 47.2/52.8 on that ride on average. I hope I can find a friend without muscle disbalance to try my bike - problem is most I know here have Looks or are vastly different size from me so we cannot just switch bikes for a couple of km, while the one Shimano user I know also has weaker left leg…
On power above my FTP the balance goes to like 55/45 while it goes to 50/50 while cruising with below 50% FTP. I do wonder how the balance is calculated too - because standing/not moving will be 50/50. So does Garmin or Jepster App (both show identical values) take the time not moving, descending without power on the pedals into the average? Then it would actually be ~45/55 (adding descending time and so on) or ~43/57 (adding time on lunch break - it was a 7 hour ride including 1 hour break).
Seeing that on actual power like squatting my right leg is like 3-4 times stronger than my left leg for right now - I still kinda doubt those balance numbers. I would have expected something from 40/60 to 30/70.
I haven’t done the short ride with proper sprint and progression however yet. My max was once 622w, I guess pushing hard for a soon to be red traffic light, and max over 2 minutes was 270w (I’m 67kg and had little training last year due to my knee so the overall numbers right now seem to align quite well, had 142W weighted average power for the 6 hour ride / 127w avg power and guess my FTP is around 195 or 3w/kg or so right now hoping to be back at 4w/kg in 3-4 months which was my level 1 year ago before the knee problems started). I find it hard to believe that the right leg would be another 20% stronger as the overall wattage would be overstated then.
I bought the Assioma’s exactly for tracking my recovery progress. Seeing how bad I still walk or limp around, cannot even thing of jogging, or walking down stairs normally, this 47/53 number looks pretty suspicous.