saturday was new bike day and now itâ€™s getting serious with the setting.
Of course i will try to get a professional fitting asap but in this time i will try to get a solid start setup with the dates you gave to me earlier.
So i have the Pad reach and stack .. do you also have a recommendation for the saddle setback to start with ? It is the original Fizik saddle from 2021.
Do I need something else ?
Thank you very much !
Congratulations on New Bike Day. My favorite day of days!!!
Understand that I'm giving rough Pad Y/X numbers based on morphology and other odds n ends that folks will throw at me. I don't have to be exact with that because I'm just prescribing a bike and some bits that will give the customer enough range to find an optimal spot. Setback is a specific thing.
If I started wide and tried to narrow down I could say this: UCI says the saddle nose has to be at least 50mm behind a line extending straight up from the bottom bracket (BB) and USAT says you can't be any farther foward than 50mm in front of that BB line. That's a 10cm swath - which, in bike fit terms, is something akin to the Grand Canyon! Then we have the saddle length issue - you said Fizik, they make a Mistica which is prehaps the shortest, nose-less saddle other than maybe the Bi-Saddle and they also make the Arione which was once advertized as "the longest in the peloton". So that challenge us too.
If I tried to get more exact... (and I think you're talking about a Mistica)... the shorter you are (and forgive me for not paging back to find your details from our original exchange) the closer your setback will be to zero (flush with BB line) or even slighly ahead of the BB. The taller you are the farther back the nose of the saddle will be.
Lastly I can tell you this: the set back is the foundational elemet of your fit. This is a place where you're comfortable and baked-in to that 'comfort' is the optimal spot to make power. From there seat height is set, cockpit distance is set, pad elevation is set.
My advice is to either ride the trainer or out on safe roads with a multitool nearby so that you can hop off, slide the rails fore/aft a few mm and then ride under power for several minutes to judge the way that feels.
Ian Murray http://www.TriathlonTrainingSeries.com
I like the pursuit of mastery
Twitter - @TriCoachIan