Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

Fitting Your Bike Are you confused about how you should fit a bike to your particular body dimensions? Have you been reading, found the terms Merxx or French Fit, and don’t know what you need? Every style of riding is different- in how you fit the bike to you, and the sizing of the bike itself. It’s more than just measuring your height, reach and inseam. With the help of Bike Fitting, you’ll be able to find the right fit for your frame size, style of riding, and your particular dimensions. Here ya’ go…..the location for everything fit related.

User Tag List

Thread Tools Search this Thread
Old 06-13-14, 03:28 PM   #1
Senior Member
Thread Starter
Join Date: Mar 2014
Location: San Antonio
Bikes: Jamis Quest Comp
Posts: 899
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
How big a difference do I need to worry about for stack and reach?

Looking at several bikes for my first road bike. Aiming for under $1200 here. Primarily for commuting(tired of fighting a 10+mph average headwind on an upright 'sport comfort' bike), but fun/long fitness rides are a priority. So is trying to get faster.

I'm looking at several bikes, most new, one used. I'm wondering how wide a range of stack/reach measurements have to be until they become significant enough for a bike to not fit.

At a LBS, I spent about 30 minutes total across two bikes. I honestly couldn't tell the difference between the two. Both were surprisingly comfortable, for completely unfamiliar positions. I suspect I would adjust pretty quickly and easily to a more aggressive riding position. I doubt I could tell a difference between the two, barring pain schemes.

For the ones that list stack/reach:
Bike #1 is a 58cm: Reach of 39.1cm, Stack of 59.8cm. 58cm frame.
Bike #2 is a 60cm: Reach of 39.5cm, Stack of 61.5cm. 60cm frame.

I recently saw a Bike #3 I would potentially buy used. It's also a 58, with a Reach of 40.3cm and a Stack of 58cm. Top tube length right in the middle between #1 &2, lower stand over than both-which appeals to me. It's a higher quality bike with much higher quality components, but lightly used and 4 years old. 8-12mm doesn't seem like much. Easily fixed with a different stem, if necessary, right? And the shorter stack would just mean a more aggressive fit? Or are the differences of #3 vs 1 or 2 severe enough to not be comfortable?

Several other bikes I found enjoyable to ride felt different than 1&2, but didn't have any stack/reach listed, so I expect that I'm not too picky/discerning. Just don't want a case of buyer's remorse.

Thanks for y'alls expertise.
Sullalto is offline   Reply With Quote
Old 06-14-14, 07:44 AM   #2
Road Fan
Senior Member
Road Fan's Avatar
Join Date: Apr 2005
Location: Ann Arbor, MI
Posts: 12,378
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 53 Post(s)
The stack of 58 cm means your handlebars will be at least 2 cm lower than on the two new bikes, and the reach 1 cm longer means you will reach out farther. You can adjust actual hbar reach by putting on a shorter stem, and you can adjust actual hbar drop by adding spacers under the stem or using a more angled stem in the "sticking up" position. Some people think a stem sticking up looks ugly on a road bike, but YMMV! Another degree of freedom is a narrower bar or one with shorter reach.

You might or might not be able to get a stem that will achieve the fit adjustments you might want. Unfortunately I don't think I could analyze this for myself without buying the bike and trying it out.
Road Fan is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 09:27 AM.