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.

One Nut

Old 10-15-21, 10:00 AM
  #1  
UnCruel
Junior Member
Thread Starter
 
Join Date: Sep 2015
Location: St. Louis, Missouri
Posts: 19

Bikes: Trek monda SL 5, Specialized Sirrus, Mongoose Dolomite ALX

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked 7 Times in 5 Posts
One Nut

I was looking over one of my bikes, with the intention of identifying the minimum tools required to service the thing in the field. It turns out I can do anything that needs to be done with four sizes of allen/hex keys and a #2 phillips, except there is one (9mm?) nut used to hold the cable on the rear derailleur. What's up with that?
Anyway, does anyone know where I could get a cap nut made to be turned with an allen key wrench?
UnCruel is offline  
Old 10-15-21, 10:13 AM
  #2  
Moe Zhoost
Half way there
 
Moe Zhoost's Avatar
 
Join Date: Sep 2015
Location: Durham, NC
Posts: 2,533

Bikes: Many, and the list changes frequently

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 829 Post(s)
Liked 625 Times in 372 Posts
I encounter 9mm hex head nuts and screws frequently in the many bikes I repair. A 8-9-10 tri-wrench is relatively easy to carry. I reckon you can replace the hex head with an allen if you feel strongly about it, but I have to ask how many times will you mess with the cable anchor in the field? Do you carry an extra shift cable and cutters in the case that the cable breaks? In any case, there are many online and storefront fastener outfits that could help you. Make sure you spec the threading and diameter correctly.

Good luck to you and kudos for carrying tools. Many cyclists carry nothing.
Moe Zhoost is offline  
Likes For Moe Zhoost:
Old 10-15-21, 10:18 AM
  #3  
Rolla
Gyro Captain
 
Rolla's Avatar
 
Join Date: Sep 2020
Posts: 1,300

Bikes: 4 Singlespeeds, 2 Gearies

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 548 Post(s)
Liked 1,368 Times in 605 Posts
Instead of hunting down a cap nut, I'd spend $12 on one of these:


Rolla is offline  
Likes For Rolla:
Old 10-15-21, 10:24 AM
  #4  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 32,999

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 1723 Post(s)
Likes: 0
Liked 617 Times in 452 Posts
A lot of older derailleurs used hex head bolts or hex nuts for their cable clamps. It's not unusual.
HillRider is offline  
Old 10-15-21, 10:35 AM
  #5  
UnCruel
Junior Member
Thread Starter
 
Join Date: Sep 2015
Location: St. Louis, Missouri
Posts: 19

Bikes: Trek monda SL 5, Specialized Sirrus, Mongoose Dolomite ALX

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked 7 Times in 5 Posts
Originally Posted by Moe Zhoost View Post
how many times will you mess with the cable anchor in the field?
Never so far. However, I can't help thinking back to owning cheap bikes where that part slipped.

Originally Posted by Moe Zhoost View Post
Good luck to you and kudos for carrying tools. Many cyclists carry nothing.
Yeah, I don't get that.
UnCruel is offline  
Old 10-15-21, 10:49 AM
  #6  
79pmooney
A Roadie Forever
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 9,791

Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder

Mentioned: 103 Post(s)
Tagged: 0 Thread(s)
Quoted: 3064 Post(s)
Liked 1,693 Times in 1,117 Posts
The other place 9mm nuts show up is on Mafac brakes. The cable clamps at the straddle cable. Both nut and bolt head. I've used crescent wrenches more than once or twice to hold the screw. I make sure I have a 9mm open/box wrench handy. (I've seen kits skip that size.)
79pmooney is offline  
Old 10-15-21, 11:07 AM
  #7  
Barry2 
LRP=HR
 
Join Date: Sep 2019
Location: SF Bay Area
Posts: 1,098

Bikes: 79 Holdsworth Special, 93 C-dale MT3000 Tandem, 96 C-dale F700CAD3, 2018 Cervelo R3, JustGo Runt, Ridley Oval, Kickr Bike 8-)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 412 Post(s)
Liked 428 Times in 267 Posts
4" Titanium Crescent Wrench - yes really.... That'll fit all your bike needs and 26g ( <1oz)

Barry
Barry2 is offline  
Old 10-15-21, 01:50 PM
  #8  
andrewclaus
Senior Member
 
Join Date: Feb 2012
Location: Golden, CO and Tucson, AZ
Posts: 2,257

Bikes: 2016 Fuji Tread, 1983 Trek 520

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 487 Post(s)
Liked 254 Times in 182 Posts
It might be easier to replace the derailleur with one that has a common 5 mm Allen pinch bolt. But yeah, I wouldn't worry about field adjustment there. Unless you carry a spare cable and are touring extensively in undeveloped areas.
andrewclaus is offline  
Old 10-15-21, 03:57 PM
  #9  
WizardOfBoz
Generally bewildered
 
WizardOfBoz's Avatar
 
Join Date: Aug 2015
Location: Eastern PA, USA
Posts: 2,872

Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1069 Post(s)
Liked 266 Times in 201 Posts
Originally Posted by Barry2 View Post
4" Titanium Crescent Wrench - yes really.... That'll fit all your bike needs and 26g ( <1oz)

Barry
Good heavens. Grade 4 Ti is close to pure (unalloyed) Ti and as such is soft (but strong). The sellers claim to sell these to Explosive Ordnance Disposal folks. If my life depended upon a non-magnetic tool, ok. But use that thing on a bike (hardened steel bolts and nuts) about 5 times and your wrench may be toast. Ti is one of the worst (not the worst, I guess Manchego cheese wouold be worst) materials for a wrench. P. T. Barnum was right!
WizardOfBoz is offline  
Old 10-15-21, 05:56 PM
  #10  
Barry2 
LRP=HR
 
Join Date: Sep 2019
Location: SF Bay Area
Posts: 1,098

Bikes: 79 Holdsworth Special, 93 C-dale MT3000 Tandem, 96 C-dale F700CAD3, 2018 Cervelo R3, JustGo Runt, Ridley Oval, Kickr Bike 8-)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 412 Post(s)
Liked 428 Times in 267 Posts
Originally Posted by WizardOfBoz View Post
Good heavens. Grade 4 Ti is close to pure (unalloyed) Ti and as such is soft (but strong). The sellers claim to sell these to Explosive Ordnance Disposal folks. If my life depended upon a non-magnetic tool, ok. But use that thing on a bike (hardened steel bolts and nuts) about 5 times and your wrench may be toast. Ti is one of the worst (not the worst, I guess Manchego cheese wouold be worst) materials for a wrench. P. T. Barnum was right!
But it's cheaper than the Beryllium copper alternatives.
Some jobs you just have to have them.

Barry
Barry2 is offline  
Old 10-16-21, 11:03 AM
  #11  
WizardOfBoz
Generally bewildered
 
WizardOfBoz's Avatar
 
Join Date: Aug 2015
Location: Eastern PA, USA
Posts: 2,872

Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1069 Post(s)
Liked 266 Times in 201 Posts
Originally Posted by Barry2 View Post
But it's cheaper than the Beryllium copper alternatives.
Some jobs you just have to have them.
Barry
Thankfully I've never had to defuse live ordnance. I did work for the gas company one summer, and if a fitting leaked it probably made good sense to use a non-sparking wrench. But they had union guys that, like, actually knew what they were doing for that.

If my comparisons of Rockwell B and C are good, the Ti is harder than BeCu. Can that be right?
WizardOfBoz is offline  
Old 10-16-21, 11:05 AM
  #12  
Shimagnolo
Senior Member
 
Shimagnolo's Avatar
 
Join Date: May 2008
Location: Zang's Spur, CO
Posts: 8,987
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 2589 Post(s)
Liked 2,772 Times in 1,399 Posts
Anyone else open this thread, expecting it to be about Lance?
Shimagnolo is offline  
Likes For Shimagnolo:
Old 10-16-21, 12:58 PM
  #13  
WizardOfBoz
Generally bewildered
 
WizardOfBoz's Avatar
 
Join Date: Aug 2015
Location: Eastern PA, USA
Posts: 2,872

Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1069 Post(s)
Liked 266 Times in 201 Posts
Originally Posted by Shimagnolo View Post
Anyone else open this thread, expecting it to be about Lance?
Oy. I had a friend in grade school with the same one nut problem. We called him "Uno", as I recall. Cruelty of youth..
WizardOfBoz is offline  
Old 10-18-21, 05:03 PM
  #14  
UnCruel
Junior Member
Thread Starter
 
Join Date: Sep 2015
Location: St. Louis, Missouri
Posts: 19

Bikes: Trek monda SL 5, Specialized Sirrus, Mongoose Dolomite ALX

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked 7 Times in 5 Posts
Well, I've picked this up for now. It weighs 15.21 grams.

UnCruel is offline  
Old 10-18-21, 11:26 PM
  #15  
Geepig
Senior Member
 
Geepig's Avatar
 
Join Date: Sep 2020
Location: Eastern Poland
Posts: 736

Bikes: Romet Jubilat x 4, Wigry x 1, Turing x 1

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 194 Post(s)
Liked 188 Times in 144 Posts
Have you tried those hex nuts they have on some cantilever or V brakes, to hold the pads on if I remember correctly?
Geepig is offline  
Old 10-19-21, 10:04 AM
  #16  
Phil_gretz
Zip tie Karen
 
Phil_gretz's Avatar
 
Join Date: Aug 2009
Location: Alexandria, VA
Posts: 6,991

Bikes: '13 Motobecane Fantom29 HT, '16 Motobecane Turino Pro Disc, '16 Motobecane Gran Premio Elite, '18 Velobuild VB-R-022, '21 Tsunami SNM-100

Mentioned: 25 Post(s)
Tagged: 0 Thread(s)
Quoted: 1446 Post(s)
Liked 1,506 Times in 795 Posts
Who is Lance Armstrong?
Phil_gretz is offline  
Old 10-19-21, 10:20 AM
  #17  
Shimagnolo
Senior Member
 
Shimagnolo's Avatar
 
Join Date: May 2008
Location: Zang's Spur, CO
Posts: 8,987
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 2589 Post(s)
Liked 2,772 Times in 1,399 Posts
Originally Posted by Phil_gretz View Post
Who is Lance Armstrong?
Sheryl Crow's ex-fianc.
Shimagnolo is offline  
Likes For Shimagnolo:
Old 10-19-21, 01:32 PM
  #18  
macstuff
Senior Member
 
Join Date: Jun 2021
Location: Tucson, Az.
Posts: 87

Bikes: A Blue One and 2 Green One's, then there's the Yellow one. And oh, yeah, a Black One. Did I mention the Red One?

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
Liked 54 Times in 32 Posts
I carry and recommend a Gerber "Cool Tool" for non-weight weenie types.
Specifically made as a bicycle carry tool, I think I've seen them in different configurations

4 Allens a chain breaker, adjustable wrench etc. It's not a "lite weight" tool though. Standard id say.

Last edited by macstuff; 10-19-21 at 01:35 PM.
macstuff is offline  
Old 10-19-21, 01:40 PM
  #19  
macstuff
Senior Member
 
Join Date: Jun 2021
Location: Tucson, Az.
Posts: 87

Bikes: A Blue One and 2 Green One's, then there's the Yellow one. And oh, yeah, a Black One. Did I mention the Red One?

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
Liked 54 Times in 32 Posts
No, I'm sorry, Lance Armstrong is not the answer we were looking for.
We were looking for who is; an ego-maniacal has-been.... with one nut.
.... oh,... wait..... wrong thread.
Never mind
macstuff is offline  
Old 10-19-21, 11:13 PM
  #20  
zandoval 
Senior Member
 
zandoval's Avatar
 
Join Date: May 2010
Location: Bastrop Texas
Posts: 2,562

Bikes: Univega, Peu P6, Peu PR-10, Ted Williams, Peu UO-8, Peu UO-18 Mixte

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 254 Post(s)
Liked 326 Times in 229 Posts
Originally Posted by Rolla View Post
Instead of hunting down a cap nut, I'd spend $12 on one of these:


Yep... That's one tool I would not leave home without.

I mostly tinker about on old cheap bikes with buggered up Phillips or Common head bolts. I switch them out for Allens all the time. I have a ChiCom outlet stainless steel assortment box of mixed sizes and I just find one close and force it. I know it sounds bad and unprofessional but it works most of the time. If not yes I go through the motions of re-taping but I do prefer the Allens over Phillips heads...
__________________
No matter where your at... There you are... Δf:=f(1/2)-f(-1/2)

Last edited by zandoval; 10-19-21 at 11:22 PM.
zandoval is offline  
Old 10-20-21, 01:12 AM
  #21  
Unca_Sam
The dropped
 
Unca_Sam's Avatar
 
Join Date: Oct 2018
Location: Columbus, OH
Posts: 2,166

Bikes: Pake C'Mute Touring/Commuter Build, 1989 Kona Cinder Cone, 1995 Trek 5200, 1973 Raleigh Super Course FG, 1966 Schwinn Deluxe Racer, 1960/61 Montgomery Ward Hawthorne "thrift" 3 speed, by Hercules

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 1556 Post(s)
Liked 846 Times in 586 Posts
If you want to dive down that hole...

The cross head fasteners on japanese components are frequently JIS standard. Phillips screwdrivers can seem to fit, but have lots of slop because the tip angle is more acute compared to JIS. Slop means stripping!

Save the Phillips head drivers for your wood screws.
Unca_Sam is offline  
Likes For Unca_Sam:
Old 10-20-21, 08:06 AM
  #22  
Crankycrank
Senior Member
 
Join Date: Jan 2009
Location: San Diego, CA
Posts: 2,567
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 508 Post(s)
Liked 387 Times in 307 Posts
Originally Posted by UnCruel View Post
Anyway, does anyone know where I could get a cap nut made to be turned with an allen key wrench?
Maybe a little late but a "socket nut" should work. Allen Socket Nuts : Bel-Metric, Metric Hardware, Metric Fasteners, Metric Bolts, Metric Nuts & Time-Sert Thread Repair (belmetric.com)
Crankycrank is offline  
Likes For Crankycrank:
Old 10-20-21, 08:31 AM
  #23  
Shimagnolo
Senior Member
 
Shimagnolo's Avatar
 
Join Date: May 2008
Location: Zang's Spur, CO
Posts: 8,987
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 2589 Post(s)
Liked 2,772 Times in 1,399 Posts
Originally Posted by Unca_Sam View Post
If you want to dive down that hole...

The cross head fasteners on japanese components are frequently JIS standard. Phillips screwdrivers can seem to fit, but have lots of slop because the tip angle is more acute compared to JIS. Slop means stripping!

Save the Phillips head drivers for your wood screws.
After I learned about the JIS standard a few years ago, I bought a JIS screwdriver.
Oh, what a difference when adjusting derailleurs!
Shimagnolo is offline  
Old 10-20-21, 08:09 PM
  #24  
Unca_Sam
The dropped
 
Unca_Sam's Avatar
 
Join Date: Oct 2018
Location: Columbus, OH
Posts: 2,166

Bikes: Pake C'Mute Touring/Commuter Build, 1989 Kona Cinder Cone, 1995 Trek 5200, 1973 Raleigh Super Course FG, 1966 Schwinn Deluxe Racer, 1960/61 Montgomery Ward Hawthorne "thrift" 3 speed, by Hercules

Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 1556 Post(s)
Liked 846 Times in 586 Posts
Originally Posted by Shimagnolo View Post
After I learned about the JIS standard a few years ago, I bought a JIS screwdriver.
Oh, what a difference when adjusting derailleurs!
I know, right!
And securing my MTB shifters, pedal cage screws...
Unca_Sam is offline  

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.