Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

Saddle Bolt Question

Search
Notices
Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Saddle Bolt Question

Thread Tools
 
Search this Thread
 
Old 12-27-20, 05:26 PM
  #1  
Metallifan33
Full Member
Thread Starter
 
Metallifan33's Avatar
 
Join Date: Dec 2019
Location: Phoenix, AZ
Posts: 255

Bikes: Trek Domane SL 5

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 218 Post(s)
Liked 102 Times in 48 Posts
Saddle Bolt Question

Hey All,
What does the "7 RND" label on my saddle bolts mean? Also, from looking at this, do you know which bolt(s) I'd need to adjust to adjust the saddle tilt? I'm looking at the ones on the sides vs. the one silver bolt underneath and in the back.
Thanks!

Metallifan33 is offline  
Old 12-27-20, 05:38 PM
  #2  
datlas 
Should Be More Popular
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 43,107

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 560 Post(s)
Tagged: 2 Thread(s)
Quoted: 22651 Post(s)
Liked 8,967 Times in 4,178 Posts
I don’t know what the label means but those are to clamp the saddle rails and adjust fore/aft. The vertical bolt in back adjusts tilt.
__________________
Originally Posted by rjones28
Addiction is all about class.
datlas is online now  
Old 12-27-20, 06:05 PM
  #3  
Metallifan33
Full Member
Thread Starter
 
Metallifan33's Avatar
 
Join Date: Dec 2019
Location: Phoenix, AZ
Posts: 255

Bikes: Trek Domane SL 5

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 218 Post(s)
Liked 102 Times in 48 Posts
Originally Posted by datlas
I don’t know what the label means but those are to clamp the saddle rails and adjust fore/aft. The vertical bolt in back adjusts tilt.
Thanks!
Metallifan33 is offline  
Old 12-27-20, 06:45 PM
  #4  
Sy Reene
Advocatus Diaboli
 
Sy Reene's Avatar
 
Join Date: Feb 2015
Location: Wherever I am
Posts: 8,657

Bikes: Merlin Cyrene, Nashbar steel CX

Mentioned: 14 Post(s)
Tagged: 1 Thread(s)
Quoted: 4758 Post(s)
Liked 1,537 Times in 1,006 Posts
FWIW, though not a great angle/photo, the tilt bolt under the saddle appears might be a T25 torx

Just a guess, looking at the clamp style, the 7RND is probably saying that the clamp is only compatible with 7mm Round rails.
Sy Reene is offline  
Likes For Sy Reene:
Old 12-27-20, 06:47 PM
  #5  
noodle soup
Senior Member
 
noodle soup's Avatar
 
Join Date: Nov 2015
Posts: 8,922
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 4717 Post(s)
Liked 1,882 Times in 998 Posts
Originally Posted by Sy Reene
FWIW, though not a great angle/photo, the tilt bolt under the saddle appears might be a T25 torx

Just a guess, looking at the clamp style, the 7RND is probably saying that the clamp is only compatible with 7mm Round rails.
that's correct.
noodle soup is offline  
Old 12-27-20, 06:54 PM
  #6  
Shinkers
Senior Member
 
Join Date: Jan 2014
Location: Utah
Posts: 770

Bikes: '88 Trek 1200, '91 Trek 1400

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 125 Post(s)
Liked 12 Times in 9 Posts
Yes, 7mm round vs 10mm oblong rails.
Shinkers is offline  
Old 12-27-20, 07:10 PM
  #7  
Metallifan33
Full Member
Thread Starter
 
Metallifan33's Avatar
 
Join Date: Dec 2019
Location: Phoenix, AZ
Posts: 255

Bikes: Trek Domane SL 5

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 218 Post(s)
Liked 102 Times in 48 Posts
Originally Posted by Sy Reene
FWIW, though not a great angle/photo, the tilt bolt under the saddle appears might be a T25 torx

Just a guess, looking at the clamp style, the 7RND is probably saying that the clamp is only compatible with 7mm Round rails.
Originally Posted by noodle soup
that's correct.
Originally Posted by Shinkers
Yes, 7mm round vs 10mm oblong rails.
Thanks guys. I was able to adjust it using a 5mm hex.
Does the tilt angle slip over time? About 6 months ago, I was at the bike fitter and told him I felt like I was slipping off the front and he said that the nose was tilted down 1.5 mm and that it may have been bumped.
Recently my wrist started hurting and I noticed that I felt the same feeling of slipping off the front. Instead of going back to the fitter, I decided to start tinkering with it. One 360 deg turn nose up and it feels better.
Is it normal to slip over time?
Metallifan33 is offline  
Old 12-27-20, 07:20 PM
  #8  
Bigbus
Very Senior Member
 
Join Date: Mar 2018
Location: Always on the Run
Posts: 1,211

Bikes: Giant Quasar & Fuji Roubaix

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 413 Post(s)
Liked 343 Times in 244 Posts
Not 100% familiar with your seat, but you might try tightening the side bolts also after you get it where you like it. That might stop the movement over time. It shows the torque measurement on the side. Other than that, I don't see a locking nut or device to stop movement over time. Good luck,
Bigbus is offline  
Likes For Bigbus:
Old 12-27-20, 07:24 PM
  #9  
noodle soup
Senior Member
 
noodle soup's Avatar
 
Join Date: Nov 2015
Posts: 8,922
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 4717 Post(s)
Liked 1,882 Times in 998 Posts
Originally Posted by bigbus
not 100% familiar with your seat, but you might try tightening the side bolts also after you get it where you like it. That might stop the movement over time. it shows the torque measurement on the side. Other than that, i don't see a locking nut or device to stop movement over time. Good luck,
+1
noodle soup is offline  
Likes For noodle soup:

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



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.