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The Bike Fit Academy

401 members • Free

3 contributions to The Bike Fit Academy
Sore Arms and saddle discomfort
43 year old trying to re-kindle my love for cycling. I got a road bike a couple of years ago and Zwift ride for indoor / winter riding. I've struggled to get the right fit on both - over recent months I find myself getting numbness in my groin after 10-15 mins on the Zwift ride and then both arms get sore - mostly the forearms . I don't stay near any bike shops for a bike fit so have tried the online/virtual offerings as well as a variety of saddles over the last 12 months and just cant get rid of either issue. I assumed the issue was weight being to far forward and putting a strain on my arms and pressure towards the front of the saddle but the changes I've made don't seem to help. Will try get some clips added in the next week but any tips or suggestions as to where I'm going wrong would be appreciated.
0 likes • 1d
Could be different things: - Saddle height (A saddle to high will add weight to your hands depending on the aggressiveness of your bike). - Saddle fore aft or stem length - Saddle type (I experienced numbness indoors as well, switching to a saddle with a cutout pressure relief was a game changer) but this would be the last component I would look into, getting numb in just 10 minutes is an indication that something else is not correct rather the saddle type. - Saddle tilt (if you already tilted the saddle too much downwards) would push you forward and if your saddle height is on the higher end it would still contribute to the numbness Since you have no choice for a bike fit, I would say start with a classic example, lower your saddle really low and start moving higher from there. You will also get a better understanding of what are the symptoms of excessive or low saddle height. Note that indoor trainers are notorious in surfacing fit issues, as you are pretty static and if you also work with erg mode on is not the easiest to micro adjust your position for comfort. I am able to cycle for 3+ hours outside but I had a very hard time getting past 50m indoors until I made some adjustments (primarily change saddle).
Seeking Advice: Fine-Tuning My Setup for Scoliosis
I’ve been living with scoliosis since childhood, but it wasn't until I started using an indoor trainer recently that I truly noticed how my asymmetries affect my cycling. I'm 48 now, 185cm tall with an 89cm inseam, weighting 95Kg and not that flexible with my legs, and I’ve spent the last five years cycling actively. However, the static nature of the trainer has highlighted issues I never noticed outdoors. I have a professional bike fit scheduled for this spring to guide my next steps. In the meantime, I’ve used online resources to make the following adjustments to my 2025 Cube C:62 Attain Race (Size 58): - Cockpit: Swapped the stock 100mm stem for a 90mm stem. - Seatpost: Swapped the 20mm offset post for a 0mm offset post. - Saddle: Replaced the stock saddle with a Selle Italia Max SLR Boost TI 316 Gel Superflow (I am also getting a Novus Boost Evo Endurance TM Superflow to compare for free) to resolve genital numbness (this worked perfectly). - Foot Support: Added Sidas 3D slim insoles for high arch support. - Wedging: Right foot: Two cleat wedges. Left: one Inshoe forefoot wedge, one heel wedge - Cleats all the way back and inside (increase stance), feel spot on. The Results: The current setup feels nearly spot on. Combined with my height and fore-aft adjustments, I can now maintain a steady 110 RPM with almost no "dead spots" in my stroke. The Current Issue: My left foot feels slightly "cramped" specifically when transitioning over the top of the pedal stroke (172.5 crank length) and generally after the adjustments my completely loose right foot feels more stable than my left, left foot is not swimming or our of control, it just feels a tad cramped. There is no pain or numbness, just a physical sensation of tightness or restriction at that specific point, no hands or back / lower back issues during my sessions. Looking for Feedback: Does anyone have advice on addressing that "cramped" feeling at the top of the stroke? Also, I would love to see more content or videos specifically addressing bike fit adjustments for riders with scoliosis or similar spine issues.
0 likes • 3d
Ok, just noticed that my left cleat was 2mm more rear than my right, aligned them to check tomorrow.
0 likes • 2d
Corrected the left cleat and things are now way better (including a small saddle height correction I was a few mm higher due to the setback change). I did a 50 minute sweet spot session with no breaks and everything looks great, still feeling a tad cramped on the left side (longer functional leg). So my final question would be, should I experiment with a single shim above the right cleat wedges to compensate? Current setup feels correct, both feet feel connected to the pedals and it is the first time that I literally feel like pushing with my entire leg rather than burning my quads with no discomfort, numbness and having a choppy peddling motion (I can confirm this by feeling at how easier I am able to push +40W compared to my previous sessions).
🎥 First Bike Fit Academy Webinar ✅ - thank you!
Brilliant to see so many of you join the first Bike Fit Academy webinar 🙌 Really appreciate the engagement, questions, and follow-up conversations. The goal of this session was to zoom out and look at why bike fit problems keep coming back, and why random tweaks rarely fix them, and the discussion afterwards shows just how relevant that is. If you’ve watched it: - What was your biggest takeaway? - Did anything shift how you think about your own fit? - What else would you like us to dive into? The recording will be available from tomorrow morning for a limited time, before moving into the Bike Fit Academy webinar library, so catch it while it’s there. Thanks again for being part of this - this is exactly the energy and thinking we hoped to create here 🚴‍♂️
0 likes • 3d
I really appreciate what you mentioned about knowing what you want before you ever step into a fitting studio. Having access to open-source information and community knowledge allows a rider to show up with a fundamental understanding of their own mechanics and goals. A bike fit isn't just a set of measurements; it’s a collaboration. If the rider doesn't know what they want to achieve, even the best fitter is shooting in the dark.
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Kostas Petrakis
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@kostas-p-3051
Road cycle enthusiast

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Joined Feb 5, 2026
Eindhoven, Netherlands
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