Go Back  Bike Forums > Bike Forums > Fitting Your Bike
Reload this Page >

choosing a new quill stem

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.

choosing a new quill stem

Reply

Old 01-28-19, 09:16 AM
  #1  
clengman
Senior Member
Thread Starter
 
clengman's Avatar
 
Join Date: Aug 2014
Location: Pittsburgh, PA
Posts: 398

Bikes: '73 Schwinn World Voyageur, '98 Nishiki BSO

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 112 Post(s)
choosing a new quill stem

I had a pro bike fitting done a few years ago and one of the suggestions was to get a taller stem. At the time I didn't want to mess around with my handlebars so I left the stem as is. It's a quill stem with 90mm extension and 10cm length from the safe insertion line to the top of the stem. I have it set at the tallest safe point. Currently, I'm at 8cm drop from seat to tops of bars. The bike fitter recommended something closer to 2 cm. I've been having some low back issues lately and I think it might help to be just a little more upright. I'm looking at Nitto 225mm stems, but I'm wondering if I should change the extension concurrently with the change in length.

On my bike fit form he said I was at KOPS-4 prefit and we moved it to KOPS-2. He said that I should probably be even a little further forward. (I'm assuming this is in cm?) He recommended getting a zero setback seatpost. If I get a different seatpost and move the seat forward 2 cm maybe I should go with more extension on the stem to keep my reach similar to what it is now?

I don't know how all these adjustments will interact. Any advice? Thanks!

Last edited by clengman; 01-28-19 at 09:34 AM.
clengman is offline  
Reply With Quote
Old 01-28-19, 01:39 PM
  #2  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 39,578

Bikes: 8

Mentioned: 165 Post(s)
Tagged: 0 Thread(s)
Quoted: 6175 Post(s)
Nitto Technomic stems offer a longer insertion length to put more of the stem, especially the wedge expanding below cut thread part , so overall safer..



As you come up higher bar clamp (With same lenhth extension) is closer to the saddle in a line parallel to the head tube/fork axis..






....
fietsbob is offline  
Reply With Quote
Old 02-03-19, 01:49 PM
  #3  
linberl
Senior Member
 
linberl's Avatar
 
Join Date: Jun 2014
Location: SF Bay Area
Posts: 2,168

Bikes: 2017 Bike Friday PakiT. (restored & sold: 2003 Bike Friday NWT, 1997 Trek 720, 1993 Trek 520)

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 839 Post(s)
Originally Posted by clengman View Post
I had a pro bike fitting done a few years ago and one of the suggestions was to get a taller stem. At the time I didn't want to mess around with my handlebars so I left the stem as is. It's a quill stem with 90mm extension and 10cm length from the safe insertion line to the top of the stem. I have it set at the tallest safe point. Currently, I'm at 8cm drop from seat to tops of bars. The bike fitter recommended something closer to 2 cm. I've been having some low back issues lately and I think it might help to be just a little more upright. I'm looking at Nitto 225mm stems, but I'm wondering if I should change the extension concurrently with the change in length.

On my bike fit form he said I was at KOPS-4 prefit and we moved it to KOPS-2. He said that I should probably be even a little further forward. (I'm assuming this is in cm?) He recommended getting a zero setback seatpost. If I get a different seatpost and move the seat forward 2 cm maybe I should go with more extension on the stem to keep my reach similar to what it is now?

I don't know how all these adjustments will interact. Any advice? Thanks!
You can see what the various changes will do by using this calculator. Stem Comparison Tool | yojimg.net Whenever I've changed the height of my stem, I've used this to see when/if I need to change the length of the extension or to just see if I get the desired effect.
linberl is offline  
Reply With Quote

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


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service