Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

What are these?

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

What are these?

Old 02-10-21, 08:02 PM
  #1  
cybirr 
Beer & Bikes
Thread Starter
 
cybirr's Avatar
 
Join Date: May 2008
Location: USA
Posts: 101

Bikes: '07 Specialized Roubaix Expert, '20 Specialized Roubaix Expert, '20 Specialized Shiv Elite

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Liked 76 Times in 33 Posts
What are these?

I noticed these two odd lugs? bolts? on the bottom of a Specialized Shiv left side chain stay. What are they for? Thank you.



Two small bolts on bottom of left side chainstay
cybirr is offline  
Old 02-10-21, 08:34 PM
  #2  
trainman999
Senior Member
 
Join Date: May 2016
Posts: 367

Bikes: 83 Schwinn Superior, 86 Paramount,86 Madison,87 Cimeron,86 Nishiki Linear

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 165 Post(s)
Liked 94 Times in 58 Posts
my guess would be a speed/cadence sensor
trainman999 is online now  
Old 02-10-21, 09:34 PM
  #3  
sdmc530
Heft On Wheels
 
sdmc530's Avatar
 
Join Date: Nov 2014
Location: South Dakota
Posts: 2,893

Bikes: Specialized,Cannondale,Argon 18

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 790 Post(s)
Liked 393 Times in 262 Posts
Do you have disc breaks on the bike?
sdmc530 is offline  
Likes For sdmc530:
Old 02-10-21, 09:48 PM
  #4  
cybirr 
Beer & Bikes
Thread Starter
 
cybirr's Avatar
 
Join Date: May 2008
Location: USA
Posts: 101

Bikes: '07 Specialized Roubaix Expert, '20 Specialized Roubaix Expert, '20 Specialized Shiv Elite

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Liked 76 Times in 33 Posts
Originally Posted by sdmc530 View Post
Do you have disc breaks on the bike?
No, rim brakes. These two odd features are about a third of the way towards the bottom bracket on the underside of the left chain stay.
cybirr is offline  
Old 02-10-21, 09:59 PM
  #5  
Outrider1
Senior Member
 
Outrider1's Avatar
 
Join Date: Jun 2020
Location: Central Florida
Posts: 191

Bikes: Trek Emonda ALR 5, Motobecane Cafe Disc Comp

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 63 Post(s)
Liked 112 Times in 53 Posts
I'm with trainman.
Outrider1 is offline  
Old 02-10-21, 10:00 PM
  #6  
Outrider1
Senior Member
 
Outrider1's Avatar
 
Join Date: Jun 2020
Location: Central Florida
Posts: 191

Bikes: Trek Emonda ALR 5, Motobecane Cafe Disc Comp

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 63 Post(s)
Liked 112 Times in 53 Posts
I'm with trainman.
Outrider1 is offline  
Old 02-10-21, 10:59 PM
  #7  
cxwrench
Senior Member
 
cxwrench's Avatar
 
Join Date: Jul 2013
Location: Nor-Cal
Posts: 2,055

Bikes: lots

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 945 Post(s)
Liked 1,221 Times in 689 Posts
External Di2 battery.
cxwrench is offline  
Likes For cxwrench:
Old 02-11-21, 05:06 AM
  #8  
AeroGut
Senior Member
 
Join Date: Jun 2019
Posts: 561
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 206 Post(s)
Likes: 0
Liked 128 Times in 102 Posts
Originally Posted by cxwrench View Post
External Di2 battery.
yes, definitely a battery mount
AeroGut is offline  
Likes For AeroGut:
Old 02-11-21, 05:13 AM
  #9  
Troul 
:D
 
Troul's Avatar
 
Join Date: Oct 2013
Location: Mich
Posts: 4,351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 1,105 Times in 793 Posts
any better picture?
__________________
-Oh Hey!
Troul is offline  
Old 02-11-21, 05:30 AM
  #10  
Ghazmh
Senior Member
 
Ghazmh's Avatar
 
Join Date: Jan 2014
Location: The banks of the River Charles
Posts: 1,656

Bikes: 2020 Seven Evergreen, 2019 Honey Allroads Ti, 2018 Seven Redsky XX, 2017 Trek Boon 7, 2014 Trek 520, 2006 Gary Fisher Montare

Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 513 Post(s)
Liked 487 Times in 287 Posts
My guess is it was for boxing and shipping purposes.
Ghazmh is offline  
Old 02-11-21, 08:40 AM
  #11  
sdmc530
Heft On Wheels
 
sdmc530's Avatar
 
Join Date: Nov 2014
Location: South Dakota
Posts: 2,893

Bikes: Specialized,Cannondale,Argon 18

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 790 Post(s)
Liked 393 Times in 262 Posts
So the guy at my shop says its probably one of two things:


Either its a cover or some sort of mounting parts for disc breaks OR is a Di2 mounting location.

Other than that he has no idea. And he has been working at a Spec shop for 15 years.
sdmc530 is offline  
Likes For sdmc530:
Old 02-11-21, 08:49 AM
  #12  
cybirr 
Beer & Bikes
Thread Starter
 
cybirr's Avatar
 
Join Date: May 2008
Location: USA
Posts: 101

Bikes: '07 Specialized Roubaix Expert, '20 Specialized Roubaix Expert, '20 Specialized Shiv Elite

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Liked 76 Times in 33 Posts
Originally Posted by Troul View Post
any better picture?
Good idea, better pictures. Appreciate the looks. Here are two better photos. Reviewing the accompanying manual, no indication what they are for.




Last edited by cybirr; 02-11-21 at 08:52 AM. Reason: Details
cybirr is offline  
Old 02-11-21, 09:03 AM
  #13  
Crankycrank
Senior Member
 
Join Date: Jan 2009
Location: San Diego, CA
Posts: 2,430
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 470 Post(s)
Liked 350 Times in 277 Posts
I would contact Specialized.
Crankycrank is offline  
Old 02-11-21, 09:24 AM
  #14  
Iride01
Hits [ENTER] b4 thinking
 
Iride01's Avatar
 
Join Date: Jul 2017
Location: Mississippi
Posts: 8,312

Bikes: '20 Tarmac Disc Comp '91, '78 Raleigh Competition GS

Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 3277 Post(s)
Liked 1,869 Times in 1,327 Posts
Well despite me earlier thinking that it was a mount for disc brake versions, the pic's show it way too forward. So now I'm in the speed/cadence sensor camp. Maybe their own SpeedZone sensor. And I guess maybe a Di2 battery, though I can't imagine why there on the newer bikes when they now go so many other places inside frame or bars easier.

Maybe it's a kick stand mount!! <grin>
Iride01 is offline  
Old 02-11-21, 09:27 AM
  #15  
cybirr 
Beer & Bikes
Thread Starter
 
cybirr's Avatar
 
Join Date: May 2008
Location: USA
Posts: 101

Bikes: '07 Specialized Roubaix Expert, '20 Specialized Roubaix Expert, '20 Specialized Shiv Elite

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Liked 76 Times in 33 Posts
SOLVED

A friend showed me a pic. It's for the first generation Di2 battery packs as mentioned by others. Thank you all for the info and time.

Last edited by cybirr; 02-11-21 at 09:44 AM. Reason: Typo
cybirr is offline  
Likes For cybirr:
Old 02-11-21, 09:39 AM
  #16  
Dan Burkhart 
Senior member
 
Dan Burkhart's Avatar
 
Join Date: Oct 2004
Location: Oakville Ontario
Posts: 7,729
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 754 Post(s)
Liked 292 Times in 183 Posts
Originally Posted by Iride01 View Post
Well despite me earlier thinking that it was a mount for disc brake versions, the pic's show it way too forward. So now I'm in the speed/cadence sensor camp. Maybe their own SpeedZone sensor. And I guess maybe a Di2 battery, though I can't imagine why there on the newer bikes when they now go so many other places inside frame or bars easier.

Maybe it's a kick stand mount!! <grin>
That was my first thought but then I looked up the model and saw it's a tri bike. Mind you, it has been done.
Dan Burkhart is offline  
Likes For Dan Burkhart:

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 - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.