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

What is this?

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 is this?

Old 03-08-20, 11:24 AM
  #1  
Miradaman
Senior Member
Thread Starter
 
Join Date: Nov 2019
Location: Greater Chicago Area
Posts: 124

Bikes: 1987 Schwinn Mirada, 1989 Trek 420, 1995 GT Timberline

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Liked 32 Times in 19 Posts
What is this?

Got my old Trek road bike on the stand for a cleaning and to replace cables. Took a good look at this fitting on the back of the head tube while it was up and still can't figure out what it is/does. Anyone? Just curious. Thanks

Miradaman is offline  
Old 03-08-20, 11:27 AM
  #2  
Paul Barnard
For The Fun of It
 
Join Date: May 2007
Location: Louisissippi Coast
Posts: 4,377

Bikes: Lynskey Backroad, Litespeed T6, Lynskey MT29, Burley Duet

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 1262 Post(s)
Liked 456 Times in 236 Posts
I have seen them on several bikes. I have never known what they were. My steel Burley tandem has one.
Paul Barnard is offline  
Old 03-08-20, 11:28 AM
  #3  
Iride01
Senior Member
 
Iride01's Avatar
 
Join Date: Jul 2017
Location: Mississippi
Posts: 3,840

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

Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 1443 Post(s)
Liked 386 Times in 297 Posts
Stud for some types of frame mounted air pumps.
Iride01 is offline  
Likes For Iride01:
Old 03-08-20, 11:29 AM
  #4  
phughes
Senior Member
 
phughes's Avatar
 
Join Date: Mar 2011
Posts: 1,612
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 408 Post(s)
Liked 195 Times in 122 Posts
That is a peg to secure a frame mount pump.


phughes is offline  
Likes For phughes:
Old 03-08-20, 11:34 AM
  #5  
Miradaman
Senior Member
Thread Starter
 
Join Date: Nov 2019
Location: Greater Chicago Area
Posts: 124

Bikes: 1987 Schwinn Mirada, 1989 Trek 420, 1995 GT Timberline

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Liked 32 Times in 19 Posts
Originally Posted by phughes View Post
That is a peg to secure a frame mount pump.


Ah, that woud explain it. Thanks.
Miradaman is offline  
Likes For Miradaman:
Old 03-08-20, 11:43 AM
  #6  
Rage
Space Ghost
 
Rage's Avatar
 
Join Date: Oct 2017
Location: NYC
Posts: 621

Bikes: 1989 Club Fuji, 1989 Bridgestone RB-1, 1989 Specialized Stumpjumper, 1997 Gary Fisher Big Sur, 2001 GT i-drive Race, Iro Mark V, a bunch more

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
Liked 102 Times in 87 Posts
Ah, them millennials...
Rage is offline  
Old 03-08-20, 11:54 AM
  #7  
BCDrums
Recreational Road Cyclist
 
BCDrums's Avatar
 
Join Date: Sep 2013
Location: MetroWest, Mass.
Posts: 278

Bikes: 1990 Peter Mooney road bike

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 135 Post(s)
Liked 61 Times in 43 Posts
It's a pump peg

It's a pump peg for a frame pump that mounts under the top tube.

The Zefal pump has a hole in its end to capture the peg, and the pump is held in place by the compression of the spring inside it.


Maybe the old Campy pumps have the same mounting hole, but I've never owned one.

Last edited by BCDrums; 03-08-20 at 12:10 PM.
BCDrums is offline  
Old 03-08-20, 12:09 PM
  #8  
phughes
Senior Member
 
phughes's Avatar
 
Join Date: Mar 2011
Posts: 1,612
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 408 Post(s)
Liked 195 Times in 122 Posts
Originally Posted by Rage View Post
Ah, them millennials...
phughes is offline  
Old 03-08-20, 12:22 PM
  #9  
alcjphil
Senior Member
 
alcjphil's Avatar
 
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 3,780
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 922 Post(s)
Liked 273 Times in 178 Posts
The only thing you have to look out for is finding a frame pump that is the correct length to fit along under the top tube. I own 4 Zefal HPX frame pumps in different lengths for just this reason
alcjphil is offline  
Old 03-08-20, 12:27 PM
  #10  
Rage
Space Ghost
 
Rage's Avatar
 
Join Date: Oct 2017
Location: NYC
Posts: 621

Bikes: 1989 Club Fuji, 1989 Bridgestone RB-1, 1989 Specialized Stumpjumper, 1997 Gary Fisher Big Sur, 2001 GT i-drive Race, Iro Mark V, a bunch more

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
Liked 102 Times in 87 Posts
Hi guys, just to be clear, I hope I didn’t come off as snarky or mean or anything like that.
It was more an exclamation at/of/over their cuteness. Like when my niece found an old rotary dial phone at my parents’ beach house and couldn’t figure out how to use it lol
Rage is offline  
Old 03-08-20, 12:28 PM
  #11  
Rage
Space Ghost
 
Rage's Avatar
 
Join Date: Oct 2017
Location: NYC
Posts: 621

Bikes: 1989 Club Fuji, 1989 Bridgestone RB-1, 1989 Specialized Stumpjumper, 1997 Gary Fisher Big Sur, 2001 GT i-drive Race, Iro Mark V, a bunch more

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
Liked 102 Times in 87 Posts
Mind you, my niece is twenty three years old and a college graduate haha
Rage is offline  
Old 03-08-20, 12:55 PM
  #12  
alcjphil
Senior Member
 
alcjphil's Avatar
 
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 3,780
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 922 Post(s)
Liked 273 Times in 178 Posts
Originally Posted by Rage View Post
Hi guys, just to be clear, I hope I didnít come off as snarky or mean or anything like that.
It was more an exclamation at/of/over their cuteness. Like when my niece found an old rotary dial phone at my parentsí beach house and couldnít figure out how to use it lol
Not at all, not near as bad as "OK boomer"
But then, I am a boomer
alcjphil is offline  
Old 03-08-20, 01:20 PM
  #13  
tomtomtom123
Senior Member
 
Join Date: Jan 2017
Posts: 947
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Likes: 0
Liked 98 Times in 70 Posts
So how do you prevent the pump from getting stolen?
tomtomtom123 is offline  
Old 03-08-20, 01:37 PM
  #14  
sweeks
Senior Member
 
sweeks's Avatar
 
Join Date: Sep 2004
Location: Chicago area
Posts: 1,463

Bikes: Airborne "Carpe Diem", Motobecane "Mirage", Trek 6000, Strida 2, Dahon "Helios XL", Dahon "Mu XL", Tern "Verge S11i"

Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 600 Post(s)
Liked 90 Times in 73 Posts
Originally Posted by tomtomtom123 View Post
So how do you prevent the pump from getting stolen?
You take it with you!
sweeks is offline  
Old 03-08-20, 01:52 PM
  #15  
Paul Barnard
For The Fun of It
 
Join Date: May 2007
Location: Louisissippi Coast
Posts: 4,377

Bikes: Lynskey Backroad, Litespeed T6, Lynskey MT29, Burley Duet

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 1262 Post(s)
Liked 456 Times in 236 Posts
Originally Posted by Rage View Post
Ah, them millennials...
57 YOA here.
Paul Barnard is offline  
Old 03-08-20, 02:20 PM
  #16  
rosefarts
With a mighty wind
 
Join Date: May 2015
Posts: 1,318
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 516 Post(s)
Liked 236 Times in 128 Posts
If you're like me, you might end up with a vertical pump and a single bottle holder. My vintage bike is a bit unique though.
rosefarts is offline  
Old 03-08-20, 02:20 PM
  #17  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 6,628

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1245 Post(s)
Liked 646 Times in 443 Posts
Originally Posted by Rage View Post
Like when my niece found an old rotary dial phone at my parentsí beach house and couldnít figure out how to use it lol
I had a fiend's kid in my car maybe 10-11YO. Couldn't figure out how to open the window. He had never seen a car with crank windows.
dedhed is offline  
Likes For dedhed:
Old 03-08-20, 02:20 PM
  #18  
guy153
Senior Member
 
Join Date: Dec 2019
Posts: 191
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 63 Post(s)
Liked 29 Times in 25 Posts
Originally Posted by tomtomtom123 View Post
So how do you prevent the pump from getting stolen?
You just ride over a bump and it falls off and gets destroyed.
guy153 is offline  
Old 03-08-20, 02:40 PM
  #19  
Rage
Space Ghost
 
Rage's Avatar
 
Join Date: Oct 2017
Location: NYC
Posts: 621

Bikes: 1989 Club Fuji, 1989 Bridgestone RB-1, 1989 Specialized Stumpjumper, 1997 Gary Fisher Big Sur, 2001 GT i-drive Race, Iro Mark V, a bunch more

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
Liked 102 Times in 87 Posts
Or it falls off unnoticed never to be seen again.
Rage is offline  
Old 03-08-20, 02:51 PM
  #20  
Rage
Space Ghost
 
Rage's Avatar
 
Join Date: Oct 2017
Location: NYC
Posts: 621

Bikes: 1989 Club Fuji, 1989 Bridgestone RB-1, 1989 Specialized Stumpjumper, 1997 Gary Fisher Big Sur, 2001 GT i-drive Race, Iro Mark V, a bunch more

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
Liked 102 Times in 87 Posts
Originally Posted by dedhed View Post
I had a fiend's kid in my car maybe 10-11YO. Couldn't figure out how to open the window. He had never seen a car with crank windows.
Hi dedhed, hey guys, hereís another good one,
So Iím on the phone with my girlfriend shortly after I hear about Lou Reedís passing. I tell her something like I canít believe heís gone. Sheís a little bit younger but will be thirty in May. A millennial but Iím thinking she knows who Lou Reed is.
She goes, ďLou Reed? Who is he? One of your friends? Iíve never heard you mention him before.Ē
Lol!
Rage is offline  
Old 03-08-20, 02:51 PM
  #21  
Drew Eckhardt 
Senior Member
 
Drew Eckhardt's Avatar
 
Join Date: Apr 2010
Location: Mountain View, CA USA and Golden, CO USA
Posts: 6,156

Bikes: 97 Litespeed, 50-39-30x13-26 10 cogs, Campagnolo Ultrashift, retroreflective rims on SON28/PowerTap hubs

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 469 Post(s)
Liked 199 Times in 148 Posts
As other people have noted it's a pump peg for a full size frame pump.

You want a full size frame pump because it will get 700x25mm road tires up to riding pressure in 90 strokes. Unlike CO2 cartridges, it can't run out if you help another rider who flatted or get a slow leak you can't find from a piece of tire wire.

You can use a short strap to keep it from rattling or falling off on a humongous bump.
Drew Eckhardt is offline  
Old 03-08-20, 03:59 PM
  #22  
Iride01
Senior Member
 
Iride01's Avatar
 
Join Date: Jul 2017
Location: Mississippi
Posts: 3,840

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

Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 1443 Post(s)
Liked 386 Times in 297 Posts
Originally Posted by Rage View Post
Hi guys, just to be clear, I hope I didnít come off as snarky or mean or anything like that.
It was more an exclamation at/of/over their cuteness. Like when my niece found an old rotary dial phone at my parentsí beach house and couldnít figure out how to use it lol
No, I thought it was cute, however I wasn't exactly sure what it meant. Most of us here are gen x and boomers I thought.
Iride01 is offline  
Old 03-08-20, 05:42 PM
  #23  
Mad Honk 
Senior Member
 
Join Date: May 2019
Location: Bloomington, IN
Posts: 994

Bikes: Trek 770, Trek 760, Schwinn Peloton, Patelli Professional, Othon Ochsner

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 416 Post(s)
Liked 295 Times in 226 Posts
I'm sure I've told this story before but it always a good one. I was making a delivery in one of our campus's older building just before renovation. It had housed one of the first cyclotrons in the country,so it clearly was due to be renovated. But while walking down the main hall off the building I heard a student exclaim "Wow, they have special booth marked telephone that I can go into and have a private conversation on my cell phone! As you can imagine any traces of a phone were not in the old cabinet. Smiles, MH
Mad Honk is offline  
Old 03-08-20, 06:28 PM
  #24  
San Rensho 
Senior Member
 
Join Date: Oct 2005
Posts: 5,820
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 354 Post(s)
Liked 115 Times in 77 Posts
Originally Posted by Rage View Post
Hi guys, just to be clear, I hope I didnít come off as snarky or mean or anything like that.
It was more an exclamation at/of/over their cuteness. Like when my niece found an old rotary dial phone at my parentsí beach house and couldnít figure out how to use it lol
Those old phones come in handy. During the last hurricane here in Miami (can't remember the name I've been through so many), the power went out but the telephone lines were still energized, they are on a different grid, and I was able to make calls. It was an antique rotary phone that I bought as a collectible, probably from the 40's, but it worked great.
__________________
Il faut de l'audace, encore de l'audace, toujours de l'audace

1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1
San Rensho is offline  
Old 03-08-20, 06:36 PM
  #25  
Rage
Space Ghost
 
Rage's Avatar
 
Join Date: Oct 2017
Location: NYC
Posts: 621

Bikes: 1989 Club Fuji, 1989 Bridgestone RB-1, 1989 Specialized Stumpjumper, 1997 Gary Fisher Big Sur, 2001 GT i-drive Race, Iro Mark V, a bunch more

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 100 Post(s)
Liked 102 Times in 87 Posts
Originally Posted by San Rensho View Post
Those old phones come in handy. During the last hurricane here in Miami (can't remember the name I've been through so many), the power went out but the telephone lines were still energized, they are on a different grid, and I was able to make calls. It was an antique rotary phone that I bought as a collectible, probably from the 40's, but it worked great.
Yup. When Sandy knocked out the power to my parentsí beach place for two weeks after, that phone was the only thing working.

Last edited by Rage; 03-08-20 at 06:57 PM.
Rage is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.