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

Bearings on 27" wheel

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.

Bearings on 27" wheel

Old 05-22-20, 10:17 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Aug 2018
Posts: 58

Bikes: 2012 Giant Trance, 1979 Dawes Echelon, Late 80s Walmart MTB

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked 5 Times in 5 Posts
Bearings on 27" wheel

I'm restoring a '79 Dawes Echelon racer, and just repacked the bearings on the front wheel. I noticed it only had 9 bearings per side, and looked like it could hold 12 at least. Is there a reason for only 9, and could I put more bearings in?
I'm slowing learning how to work on bikes, but sometimes the reason for the way it's put together eludes me.... I think the bearings are the little 3/16ths... should there be more than 9 per side?
johnspack is offline  
Old 05-22-20, 10:21 PM
  #2  
I am potato.
 
base2's Avatar
 
Join Date: Jun 2015
Location: Pacific Northwest
Posts: 3,028

Bikes: Only precision built, custom high performance elitist machines of the highest caliber. 🍆

Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 1733 Post(s)
Liked 1,545 Times in 892 Posts
9 is pretty standard. It just is.
__________________
I shouldn't have to "make myself more visible;" Drivers should just stop running people over.

Car dependency is a tax.
base2 is offline  
Old 05-22-20, 10:36 PM
  #3  
Banned.
 
Join Date: Apr 2018
Posts: 821

Bikes: Wahoo of Theseus, others

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 428 Post(s)
Liked 67 Times in 46 Posts
You need to have some space for them to move around, usually about 2 less than whatever can be held.
Oneder is offline  
Likes For Oneder:
Old 05-23-20, 02:10 AM
  #4  
Industry guy
 
Join Date: Nov 2007
Location: Minnesota
Posts: 351

Bikes: To many to name - I ride a custom built steel frame.

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 115 Post(s)
Liked 77 Times in 46 Posts
Bearing counts in C&V :

10 balls per side front wheel
11 balls per side crank
9 balls per side rear wheel.

This refers to loose ball design, not retainer styles.

There are exceptions, but not many.

rusty
100bikes is offline  
Likes For 100bikes:
Old 05-23-20, 08:56 AM
  #5  
Senior Member
 
mrrabbit's Avatar
 
Join Date: Dec 2007
Location: San Jose, California
Posts: 3,504

Bikes: 2001 Tommasini Sintesi w/ Campagnolo Daytona 10 Speed

Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 145 Post(s)
Likes: 0
Liked 34 Times in 29 Posts
If the hubs are pure french....there's a slight possibility they might be 13 balls rear (Maillard Helicomatic), much smaller (3/16 or 5/32) than the ball bearings we see for the typically 10 front and 9 rear.

Again, slight possiblility.

Put enough bearing of the right size in, such that when grouped up, there's still a 2-3mm gap on the non-grouped side. Do a cone test, see how high the bearings ride. Somewhere in the middle to 2/3 up is good.

=8-|
__________________
5000+ wheels built since 1984...

Disclaimer:

1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:

Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
mrrabbit is offline  
Likes For mrrabbit:
Old 05-23-20, 09:35 AM
  #6  
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,776

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1753 Post(s)
Liked 1,199 Times in 830 Posts
Originally Posted by johnspack
I'm restoring a '79 Dawes Echelon racer, and just repacked the bearings on the front wheel. I noticed it only had 9 bearings per side, and looked like it could hold 12 at least. Is there a reason for only 9, and could I put more bearings in?
I'm slowing learning how to work on bikes, but sometimes the reason for the way it's put together eludes me.... I think the bearings are the little 3/16ths... should there be more than 9 per side?
If you don't have a caliper to measure your bearings, line them up along a ruler.
If 3/16"-
16 = 3".
8 = 1-1/2".......

I have ran into Huffy's with 9 1/4" balls/side in the front.
Bill Kapaun is offline  
Old 05-23-20, 06:03 PM
  #7  
Senior Member
Thread Starter
 
Join Date: Aug 2018
Posts: 58

Bikes: 2012 Giant Trance, 1979 Dawes Echelon, Late 80s Walmart MTB

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked 5 Times in 5 Posts
Thanks for all the input guys. Feeling kinda dumb right now. Decided to search the floor area where I had worked on my wheel. Found 2 bearings. Measured them, 1/4". So the answer for front late 70s Mavic rims is 10, 10 bearings per side!
johnspack is offline  
Likes For johnspack:
Old 05-23-20, 07:15 PM
  #8  
Senior Member
 
Join Date: Jun 2014
Location: Ontario, Canada
Posts: 4,655

Bikes: iele Latina, Miele Suprema, Miele Uno LS, Miele Miele Beta, MMTB, Bianchi Model Unknown, Fiori Venezia, Fiori Napoli, VeloSport Adamas AX

Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1324 Post(s)
Liked 927 Times in 640 Posts
I was going to say that if you were able to get 12 bearings into the hub, it would mean that the bearings were the wrong size.

I used to have a Park ruler that measured spoke lengths, cotter pin sizes and ball bearing sizes. Now if I need to check a ball bearing size I use my drill bit sizing guide. Those are available at nearly every hardware store.

Cheers
Miele Man is offline  
Old 05-23-20, 07:51 PM
  #9  
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,776

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1753 Post(s)
Liked 1,199 Times in 830 Posts
Originally Posted by johnspack
Thanks for all the input guys. Feeling kinda dumb right now. Decided to search the floor area where I had worked on my wheel. Found 2 bearings. Measured them, 1/4". So the answer for front late 70s Mavic rims is 10, 10 bearings per side!
Rims are moot.
It's the hubs that matter.
Never seen a hub that took 10 1/4"balls/side.
Bill Kapaun is offline  
Old 05-23-20, 07:57 PM
  #10  
Senior Member
Thread Starter
 
Join Date: Aug 2018
Posts: 58

Bikes: 2012 Giant Trance, 1979 Dawes Echelon, Late 80s Walmart MTB

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Liked 5 Times in 5 Posts
Read my caliper wrong. Pretty sure they are 3/16". It's a Shimano hub.
I'm almost blind in one eye, and forgot to use my magnifying glass.
Did I mention I'm almost 60 with a few medical problems?

Last edited by johnspack; 05-23-20 at 09:14 PM.
johnspack 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

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.