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

Gary Fisher and Klein press-in bottom bracket bearings

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.

Gary Fisher and Klein press-in bottom bracket bearings

Old 08-27-21, 04:18 PM
  #1  
Cactus459
Newbie
Thread Starter
 
Cactus459's Avatar
 
Join Date: Jan 2021
Posts: 39
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked 11 Times in 5 Posts
Gary Fisher and Klein press-in bottom bracket bearings

To Bike Bottom Bracket Conversion Adapter 1 Pair Bicycle Black Durable...

https://www.ebay.com/itm/To-Bike-Bottom-Bracket-Conversion-Adapter-1-Pair-Bicycle-Black-Durable-/363521812400?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

Any chance something like this would work on an old Fisher bike with the square taper bottom bracket with press in bearings? Saw these on eBay and thought I could update to a more modern crankset?

Thanks for any additional information.
Cactus459 is offline  
Old 08-27-21, 06:57 PM
  #2  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,003

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4172 Post(s)
Liked 3,792 Times in 2,271 Posts
I forget the Fisher BB shell ID or how that compares to the BB30 shell ID. One aspect I believe I see is that this adaptor depends of the bearing preload to hold the adaptors in the shell, unless the adaptors are also a press fit into the shell. Interesting the listing has a reference to tolerances "2. Please allow slight manual measurement deviation for the data." that makes me wonder. That and the need for O rings to insure contact. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Likes For Andrew R Stewart:
Old 08-28-21, 11:01 AM
  #3  
oldbobcat
Senior Member
 
oldbobcat's Avatar
 
Join Date: Jul 2005
Location: Boulder County, CO
Posts: 4,370

Bikes: '80 Masi Gran Criterium, '12 Trek Madone, early '60s Frejus track

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 508 Post(s)
Liked 434 Times in 331 Posts
Originally Posted by Andrew R Stewart
I forget the Fisher BB shell ID or how that compares to the BB30 shell ID. One aspect I believe I see is that this adaptor depends of the bearing preload to hold the adaptors in the shell, unless the adaptors are also a press fit into the shell. Interesting the listing has a reference to tolerances "2. Please allow slight manual measurement deviation for the data." that makes me wonder. That and the need for O rings to insure contact. Andy
The crank interface is square-taper. That means your Fisher has a BSA threaded BB shell. The most straightforward and reliable upgrade path would be to use the BSA-threaded outboard bearings that are appropriate for the crankset you choose. In other words, upgrade around the crank, not some bearings you happened to find. Hollowtech II for Shimano, GXP for SRAM and Raceface, or FSA for FSA. Owners of bikes with press-fit bottom brackets covet your threaded BB shell. Take advantage of that.
oldbobcat is offline  
Old 08-28-21, 12:20 PM
  #4  
wesmamyke
Senior Member
 
Join Date: Nov 2009
Posts: 1,176
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 196 Post(s)
Liked 86 Times in 76 Posts
Originally Posted by oldbobcat
The crank interface is square-taper. That means your Fisher has a BSA threaded BB shell. The most straightforward and reliable upgrade path would be to use the BSA-threaded outboard bearings that are appropriate for the crankset you choose. In other words, upgrade around the crank, not some bearings you happened to find. Hollowtech II for Shimano, GXP for SRAM and Raceface, or FSA for FSA. Owners of bikes with press-fit bottom brackets covet your threaded BB shell. Take advantage of that.
The OP is probably not imagining things. Fisher, Klein, Fat chance and some others used press fit bearings with square taper spindles. The spindles are straight and held in with locking colars.

https://www.ebay.com/itm/23353054596...IAAOSwXj9fV55b
https://www.ebay.com/itm/12436694707...sAAOSw2kVhJWcb

I think the shell size is 35mm-ish, certainly not much room for BB30 cranks. Maybe Shimano/SRAM 24mm?
wesmamyke is offline  
Likes For wesmamyke:
Old 08-28-21, 02:18 PM
  #5  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,516

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970

Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2731 Post(s)
Liked 3,361 Times in 2,034 Posts
https://www.mtb-kataloge.de/Bikekata..._manuals96.pdf

​​​​​​https://www.mtbr.com/threads/1990-ga.../#post-9405534

​​​​​​https://www.sheldonbrown.com/cribshe...mbrackets.html
dedhed is offline  
Old 08-28-21, 02:24 PM
  #6  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,516

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970

Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2731 Post(s)
Liked 3,361 Times in 2,034 Posts
Originally Posted by oldbobcat
The crank interface is square-taper. That means your Fisher has a BSA threaded BB shell.

Some of the older Klein & Fisher used a press fit Sq taper BB.
dedhed is offline  
Old 08-28-21, 07:59 PM
  #7  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,003

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4172 Post(s)
Liked 3,792 Times in 2,271 Posts
And these cartridge press fitted bearing BBs is what I thought the OP was referencing. IIRC the shells of these early MtBs were close to the same OD as threaded shells are. So a 42OD bearing won't come anywhere near close to fitting, of an adaptor made for this 42mm press fit shell won't come close. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 08-29-21, 01:30 PM
  #8  
oldbobcat
Senior Member
 
oldbobcat's Avatar
 
Join Date: Jul 2005
Location: Boulder County, CO
Posts: 4,370

Bikes: '80 Masi Gran Criterium, '12 Trek Madone, early '60s Frejus track

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 508 Post(s)
Liked 434 Times in 331 Posts
[QUOTE=wesmamyke;22204785]The OP is probably not imagining things. Fisher, Klein, Fat chance and some others used press fit bearings with square taper spindles. The spindles are straight and held in with locking colars.

/QUOTE]

I came across a years-old thread in this forum on this. Here's the link. https://www.bikeforums.net/bicycle-m...-question.html


There was a reference to a youtube video, too.
It uses standard 6003 (17x35x10) bearings and a proprietary spindle. Any upgrade will have to involve the original spindle, as 35 mm is larger than 1.37".
oldbobcat is offline  
Likes For oldbobcat:
Old 08-29-21, 02:42 PM
  #9  
Ross200
Junior Member
 
Join Date: Feb 2019
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 57 Post(s)
Liked 44 Times in 34 Posts
Phil Wood makes 17 mm spindles in a wide range of lengths to get the right chainline with the square taper crank of your choice.
Ross200 is offline  
Likes For Ross200:
Old 08-29-21, 08:43 PM
  #10  
wesmamyke
Senior Member
 
Join Date: Nov 2009
Posts: 1,176
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 196 Post(s)
Liked 86 Times in 76 Posts
Interesting that they actually had a spindle that wasn't just dead straight. It's possible I've only taken apart Fat Chance BB's with the locking collars.
wesmamyke is offline  
Old 08-30-21, 08:15 AM
  #11  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,516

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970

Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2731 Post(s)
Liked 3,361 Times in 2,034 Posts
Originally Posted by wesmamyke
Interesting that they actually had a spindle that wasn't just dead straight. It's possible I've only taken apart Fat Chance BB's with the locking collars.
You need the shoulders to keep it from sliding side to side.
dedhed is offline  
Likes For dedhed:
Old 08-30-21, 11:08 AM
  #12  
Troul 
Senior Member
 
Troul's Avatar
 
Join Date: Oct 2013
Location: Mich
Posts: 7,291

Bikes: RSO E-tire dropper fixie brifter

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 2,910 Times in 1,884 Posts
Originally Posted by dedhed
You need the shoulders to keep it from sliding side to side.
The SRAM PF30 takes a straight shaft crank & relies on the BB face with the DS & NDS assemblies to bottom out, as well as preload washers with seals to minimize lateral movement. Maybe something in that order could be found to work?
__________________
-Oh Hey!
Troul is offline  
Old 08-30-21, 11:24 AM
  #13  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,516

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970

Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2731 Post(s)
Liked 3,361 Times in 2,034 Posts
Originally Posted by Troul
The SRAM PF30 takes a straight shaft crank & relies on the BB face with the DS & NDS assemblies to bottom out, as well as preload washers with seals to minimize lateral movement. Maybe something in that order could be found to work?
This 30 year old technology allowed using any crank, from multiple manufacturers, without any proprietary design, to be used. Sure a straight through design would have worked with a different design complicating things. The design used let you use any crank that spindle length accommodated without any extra parts or instruction.
dedhed is offline  
Old 08-30-21, 11:48 AM
  #14  
rosefarts
With a mighty wind
 
Join Date: May 2015
Posts: 2,555
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1073 Post(s)
Liked 841 Times in 475 Posts
Are you on any bicycle Facebook groups?

Every couple weeks someone (maybe multiple, maybe the same guy) posts up that he is a precise machine fabrication type. He’s looking for projects. I love the sentiment but have nothing for him I needs.

It would be reasonable to believe that he could build press-in cups that would accommodate bearings off a gutted BSA cupset.

I don’t know about spindle length being in the ballpark or not. Do some homework I suppose.

It seems like you can do it. Possibly not weather tight.

I don’t know what a single custom fabrication like that would cost though.
rosefarts is offline  
Likes For rosefarts:

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 -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.