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

Should I drill out those rivets...

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.

Should I drill out those rivets...

Old 12-06-19, 09:54 AM
  #1  
sjanzeir
Senior Member
Thread Starter
 
Join Date: Apr 2016
Location: Jeddah, Saudi Arabia
Posts: 495

Bikes: 1990 Raleigh Flyer; 2014 Trek 7.6 FX (size 15"); 2014 Trek 7.6 FX (size 17.5"); 2019 Dahon Mu D9

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 29 Times in 24 Posts
Should I drill out those rivets...

... and replace them with bolts?



sjanzeir is offline  
Old 12-06-19, 10:04 AM
  #2  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 12,377

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1997 Post(s)
Liked 166 Times in 130 Posts
Why? Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Likes For Andrew R Stewart:
Old 12-06-19, 10:07 AM
  #3  
Crankycrank
Senior Member
 
Join Date: Jan 2009
Location: San Diego, CA
Posts: 1,416
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 209 Post(s)
Liked 25 Times in 18 Posts
I don't see it as a big deal whether you drill them or not but if there are no issues with them now why bother. It could be a big headache finding the right sized fasteners to fit. A good example of "if it ain't broke, don't fix it".
Crankycrank is offline  
Likes For Crankycrank:
Old 12-06-19, 10:09 AM
  #4  
rumrunn6
Senior Member
 
rumrunn6's Avatar
 
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 23,854

Bikes: Bottecchia Sprint, GT Timberline 29r

Mentioned: 97 Post(s)
Tagged: 0 Thread(s)
Quoted: 3373 Post(s)
Liked 366 Times in 271 Posts
is their room for nuts (& lock washers, etc) on the other side? looks like chain ring bolts actually require a recessed (countersink) notch to sit in

'nother question tho, if you try to drill out a rivet won't it just spin?


Last edited by rumrunn6; 12-06-19 at 10:19 AM.
rumrunn6 is offline  
Likes For rumrunn6:
Old 12-06-19, 10:10 AM
  #5  
sjanzeir
Senior Member
Thread Starter
 
Join Date: Apr 2016
Location: Jeddah, Saudi Arabia
Posts: 495

Bikes: 1990 Raleigh Flyer; 2014 Trek 7.6 FX (size 15"); 2014 Trek 7.6 FX (size 17.5"); 2019 Dahon Mu D9

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 29 Times in 24 Posts
As Yvonne Criddle would say, dem rivets lookin' damn fugly like dat. And it's very likely that they're too corroded to be safe...
sjanzeir is offline  
Old 12-06-19, 10:10 AM
  #6  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 6,657

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 831 Post(s)
Liked 157 Times in 129 Posts
I would suggest not, unless you are prepared to machine the spider and rings to properly accept chainring hardware. You will likely have difficulty maintaining concentricity with, and may run into clearance issues from the heads of, standard nuts and bolts.
What problem are you aiming to solve? If the minor rust is bothering you, use a conversion treatment and a little Rust-Oleum-type paint, although I would not bother. Rivets make a very strong connection. Never Fix A Running Piece.
dsbrantjr is offline  
Likes For dsbrantjr:
Old 12-06-19, 10:16 AM
  #7  
sjanzeir
Senior Member
Thread Starter
 
Join Date: Apr 2016
Location: Jeddah, Saudi Arabia
Posts: 495

Bikes: 1990 Raleigh Flyer; 2014 Trek 7.6 FX (size 15"); 2014 Trek 7.6 FX (size 17.5"); 2019 Dahon Mu D9

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 29 Times in 24 Posts
Thank you!
sjanzeir is offline  
Old 12-06-19, 10:27 AM
  #8  
AnkleWork
Senior Member
 
Join Date: Jan 2013
Location: Llano Estacado
Posts: 3,595

Bikes: old clunker

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 638 Post(s)
Likes: 0
Liked 69 Times in 52 Posts
Originally Posted by sjanzeir View Post
Should I drill out those rivets...
... and replace them with bolts?
Future thread: "Why is my modified crankset creaking so much?"
AnkleWork is offline  
Likes For AnkleWork:
Old 12-06-19, 10:33 AM
  #9  
'02 nrs
royaloaker
 
'02 nrs's Avatar
 
Join Date: Jan 2010
Location: se MIch.
Posts: 156

Bikes: 1938 claud butler,1983 Basso,teledyne titan,teocali super,nrs,1993 stumpjumper fsr,Paramountain,Paramount Buell,4 banger,Zaskar LE,Colnago Master Ibex MTB,1987ish,.etc....

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Liked 52 Times in 30 Posts
cleaning/

try some of this with Qtips.https://www.walmart.com/ip/Chromax-C...SABEgJC5_D_BwE
'02 nrs is offline  
Old 12-06-19, 10:34 AM
  #10  
sjanzeir
Senior Member
Thread Starter
 
Join Date: Apr 2016
Location: Jeddah, Saudi Arabia
Posts: 495

Bikes: 1990 Raleigh Flyer; 2014 Trek 7.6 FX (size 15"); 2014 Trek 7.6 FX (size 17.5"); 2019 Dahon Mu D9

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 29 Times in 24 Posts
Originally Posted by AnkleWork View Post
Future thread: "Why is my modified crankset creaking so much?"
sjanzeir is offline  
Old 12-06-19, 10:38 AM
  #11  
sjanzeir
Senior Member
Thread Starter
 
Join Date: Apr 2016
Location: Jeddah, Saudi Arabia
Posts: 495

Bikes: 1990 Raleigh Flyer; 2014 Trek 7.6 FX (size 15"); 2014 Trek 7.6 FX (size 17.5"); 2019 Dahon Mu D9

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 29 Times in 24 Posts
Originally Posted by '02 nrs View Post
I'm sure I can find the same or similar products locally. I wonder what ever happened to Walmart setting up shop in Saudi Arabia... 🤔
sjanzeir is offline  
Old 12-06-19, 10:44 AM
  #12  
sjanzeir
Senior Member
Thread Starter
 
Join Date: Apr 2016
Location: Jeddah, Saudi Arabia
Posts: 495

Bikes: 1990 Raleigh Flyer; 2014 Trek 7.6 FX (size 15"); 2014 Trek 7.6 FX (size 17.5"); 2019 Dahon Mu D9

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 29 Times in 24 Posts
Originally Posted by rumrunn6 View Post
chain ring bolts actually require a recessed (countersink) notch to sit in


That makes perfect sense. Thank you.
sjanzeir is offline  
Old 12-06-19, 12:25 PM
  #13  
79pmooney
A Roadie Forever
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 7,439

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: 97 Post(s)
Tagged: 0 Thread(s)
Quoted: 1870 Post(s)
Likes: 0
Liked 255 Times in 187 Posts
Don't even think about it until it is time to replace the chainrings. If you drill out the bolts and the replacements don't fit exactly, ie if there is even a little slop, the crankset will do a slow death as the blot holes elongate. Standard crankbolts holes are 10mm exactly. Chainring bolts are also. Snug fit, not the clearance fit of the usual bolt and hole.

I'm guessing those rivets are doing a good job of being tight, no play at all. Don't disturb them until you have to!

Ben
79pmooney is offline  
Old 12-06-19, 12:26 PM
  #14  
sjanzeir
Senior Member
Thread Starter
 
Join Date: Apr 2016
Location: Jeddah, Saudi Arabia
Posts: 495

Bikes: 1990 Raleigh Flyer; 2014 Trek 7.6 FX (size 15"); 2014 Trek 7.6 FX (size 17.5"); 2019 Dahon Mu D9

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 29 Times in 24 Posts
sjanzeir is offline  
Old 12-06-19, 01:06 PM
  #15  
79pmooney
A Roadie Forever
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 7,439

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: 97 Post(s)
Tagged: 0 Thread(s)
Quoted: 1870 Post(s)
Likes: 0
Liked 255 Times in 187 Posts
Originally Posted by rumrunn6 View Post
is their room for nuts (& lock washers, etc) on the other side? looks like chain ring bolts actually require a recessed (countersink) notch to sit in

'nother question tho, if you try to drill out a rivet won't it just spin?

Actually, the recess is not necessary for the chainrings. It helps with clearance with the chainstays and makes for a nice clean appearance. Chainring bolts are sized assuming the recess, so yes, we now need the recess. but not because there is any magic to the recess itself. I have a crankset where the outer ring sits only on the bolt and the recess is there but not used. Bolt extends past the chainring. There is a large washer and nut.

This works (very well) because the bolt is a tight fit with the chainring (and was a very interesting project). That crankset is a triple with 3 1/8" chairing for a fix gear chain. A short bottom bracket is used to bring the entire crankset inboard, both for chainline and to reduce the Q-factor for my knees. Inside chainring sits on the usual inside position of a double crankset. Middle on the usual outside position. Outer chainring is spaced out into the gap between chainrings and crankarm.

Crankarm bolts are standard 8mm stainless flathead bolts with a generous shoulder. The inside chainrings were countersunk for the flathead bolts. The bolts were brought out to the tight fit 10mm by fabricating sleeves that fit tightly over the bolt shoulders.

This was done by Dave Levy at TiCycles, an expert machinist on a very high quality milling machine. Not cheap. We were very conscious that extending the bolt out unsupported meant that any play at all would be quickly fatal. especially since it would be seeing the rigors of fix gear use.

Ben
79pmooney is offline  
Likes For 79pmooney:

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