Hello. It is my understanding that stack and reach are the most important measurements when considering bike fit. With this in mind, I have the following question regarding potential bikes, and which one might best relate to the fit of my current bike (Lynskey). The chart below shows Stack and Rea…

So, an anecdotal story for you. For years, my main bike was a cyclocross bike: a size 51 Cannondale CAADX. It has a 371 mm reach and 536 mm stack. I run it with a 15mm spacer and 110mm stem. Been riding the same fit for years. It works well for me. When I decided I wanted to dedicated road bike, I…

Thank you, agreed, not that simple at all.

I’m assuming that all the bikes you have listed, being aero road bikes have basically the same geometry. If that’s the case, then the stack and reach is the correct way to compare how the frames are going to fit you. It’s worth checking that your current bike has approximately the same angles too. …

[image] summerson: So, all this is to say one thing: bike fit is about more than stack and reach. Top tube and seat tube length still very much matter in my opinion, as do head tube and seat tube angles This is not correct…Stack and Reach measurements were specifically designed to remove vari…

[image] Power13: This is not correct…Stack and Reach measurements were specifically designed to remove variables from bike fit. When measured properly (i.e. from the center of the BB), Stack and Reach are objective measurements that allow you to achieve the same position between bikes, regardles…

Oh well in that case we can completely eliminate my actual real world experience from the equation. It’s not like I spent countless hours trying to figure out why my 12, which had very similar stack and reach to the X, didn’t fit anything like the X. If only someone would’ve told me that stack and r…

No…Stack & Reach are measured from the center of the BB. That measurement eliminates the confusion of angles, tube lengths, etc. If you have two bikes with the same Stack and Reach, and you saddle is in the same position relative to the BB on both bikes (which it should be), then you fit is the sa…

You both are right & wrong :stuck_out_tongue: Both measurements matter. R&S are great for looking at pure position ideology, but it ignores potential limitations in saddle placement than can exist from seat tube angle and seat post positioning. Generally speaking, you can get a saddle anywhere yo…

[image] summerson: Oh well in that case we can completely eliminate my actual real world experience from the equation My guess is that you had other elements in play…different saddle position relative to the BB, different HB measurements, etc. In addition, you were trying to use a CX positio…

Stack and Reach questions

Equipment

mcneese.chad May 15, 2020, 3:44pm 23

2 Likes

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