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

Tell me about Hollow Tech

Search
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.

Tell me about Hollow Tech

Thread Tools
 
Search this Thread
 
Old 07-02-23 | 06:48 PM
  #1  
Thread Starter
Guest
20 Anniversary
 
Joined: Dec 2004
Posts: 1,606
Likes: 1,446
Tell me about Hollow Tech

I have acquired (most of) a bike with a press fit Bottom Bracket BB92(?)
From the limited information I can find, it's for Shimano Hollowtech II

I'm trying to find Cranks for it with 160mm crank arms.
160mm crank arms seem to be sold separately from the hollow spline(?) (not sure of the terminology)
But I do NOT see the spline sold separately. All cranks seem to be permanently attached to the chain ring with the non drive side detachable.

Can anyone point me in the proper direction?

(I'm also open to other BB and crank solutions, but this is a free bike and would like to keep this on the inexpensive side)
bfuser5893539 is offline  
Reply
Old 07-02-23 | 07:40 PM
  #2  
maddog34's Avatar
Senior Member
10 Anniversary
Community Builder
Community Influencer
Active Streak: 30 Days
 
Joined: Jul 2015
Posts: 7,476
Likes: 3,287
From: NW Oregon

Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike

i have never seen a Hollowtech II crankset without an integrated spindle installed by the factory.... EVER.

older Shimano Octalink cranksets WERE sold without a spindle mounted by the factory... many of those used the Hollowtech Arms, and those were called "Hollowtech"..

Gonna need to know the Bike make/model/year, and the Gearing you want to use, for anyone to "point you in the right direction".
maddog34 is offline  
Reply
Old 07-02-23 | 07:42 PM
  #3  
ljsense's Avatar
Senior Member
15 Anniversary
 
Joined: Sep 2009
Posts: 771
Likes: 166
From: Madison, Wis.
Most modern Shimano cranksets will fit in your BB92 bottom bracket.

The 160 mm crank arm length does not matter. That is an uncommonly short crank arm length, so maybe that is making the search more difficult.

But whether your crankset has a 160 mm arm or a 172.5 mm arm, all your bottom bracket cares about is that it has a 24 mm spindle that slides into its bearings. And all modern Shimano cranksets (10 or 11-speed) do.

In Dura Ace, you're looking for FC-7800, FC-7900, FC-9000, FC-9100 or in Ultegra, FC-6600 and up. The spline is always with the crankset; it is fixed to the driveside arm.
ljsense is offline  
Reply
Old 07-02-23 | 07:51 PM
  #4  
tyrion's Avatar
Senior Member
 
Joined: Oct 2015
Posts: 4,073
Likes: 2,015
From: San Diego, California

Bikes: Velo Orange Piolet

Hollowtech II cranks have a 24mm spindle. Lots of companies make cranks with a 24mm spindle that work with Hollowtech II bottom brackets ("Hollowtech II" is probably a trademark of Shimano's so other companies might be restricted on how they use the term). Many cranksets construct the drive side crank arm and spindle and chainring spider as a single unit - cheaper and lighter than making the unit disassemblable.
tyrion is offline  
Reply
Old 07-02-23 | 07:54 PM
  #5  
Newbie
 
Joined: Jun 2023
Posts: 57
Likes: 16
From: Claremont, CA

Bikes: Lemond Zurich Record 10spd, Klein Quantum Race r7000

Appleman bicyles makes 155 and 165 cranks compatible with hollowtech ii. Quite pricy though, ~$500 and up. Rotor Aldhu24 is also compatible, but I don't know what lengths they offer or the prices.

Edit: Did a quick look on rotor's site and it looks like they have cheaper options than the aldhu. The Vegast is ~$330 without rings VEGAST 24 Spider Mount Crankset Builder | Rotor America

Last edited by trashbiker; 07-02-23 at 07:59 PM.
trashbiker is offline  
Reply
Old 07-02-23 | 09:37 PM
  #6  
icemilkcoffee's Avatar
Senior Member
Titanium Club Membership
15 Anniversary
Community Builder
Active Streak: 30 Days
 
Joined: Aug 2009
Posts: 4,304
Likes: 3,732
Shimano 105 cranksets come in 160mm
icemilkcoffee is online now  
Reply
Old 07-03-23 | 12:23 AM
  #7  
Senior Member
15 Anniversary
 
Joined: Oct 2009
Posts: 2,161
Likes: 323
From: Mt Shasta, CA, USA

Bikes: Too many. Giant Trance X 29, Surly Midnight Special get the most time.

It would be helpful if you could describe the kind of bike it is and what chainring(s) you plan to run. BB92 usually means a mountain bike. https://jrbicycles.com/products/box-...0aAkexEALw_wcB looks good for pretty average MTB applications. You actually can't fit a Shimano road crankset because the spacing is too wide (they use BB86.5 for PF road).
cpach is offline  
Reply
Old 07-03-23 | 04:10 AM
  #8  
Thread Starter
Guest
20 Anniversary
 
Joined: Dec 2004
Posts: 1,606
Likes: 1,446
Originally Posted by cpach
It would be helpful if you could describe the kind of bike it is and what chainring(s) you plan to run. BB92 usually means a mountain bike. https://jrbicycles.com/products/box-...0aAkexEALw_wcB looks good for pretty average MTB applications. You actually can't fit a Shimano road crankset because the spacing is too wide (they use BB86.5 for PF road).
Looks like this comes with a BSA threaded BB

Would this still work with the press fit BB that is on the bike now?
bfuser5893539 is offline  
Reply
Old 07-03-23 | 05:05 AM
  #9  
Full Member
 
Joined: May 2016
Posts: 220
Likes: 3
From: Europe

Bikes: Bianchi (Campagnolo) '12, Bianchi 1x11 (Sram) '15, Olmo Dynamic (Campagnolo) '11, Nishiki Road Master SS '11, Nishiki Trim Master '89, Giant TCX2 CC '12, White GX Pro (gravel) '20, White (MTB) 29", Insera Nyx 27,5", Trek Zektor Four (CC) 29"

Originally Posted by CrimsonEclipse
Looks like this comes with a BSA threaded BB

Would this still work with the press fit BB that is on the bike now?
No, unfortunately not. There is no threads in pressfit bb's. And the inner diameter of your bike's bb is about 41mm, threded HT bb's are smaller.
voor9 is offline  
Reply
Old 07-03-23 | 11:02 AM
  #10  
Thread Starter
Guest
20 Anniversary
 
Joined: Dec 2004
Posts: 1,606
Likes: 1,446
Originally Posted by voor9
No, unfortunately not. There is no threads in pressfit bb's. And the inner diameter of your bike's bb is about 41mm, threded HT bb's are smaller.
I meant the width. Is the width the same.
Will those cranks work with a bike using press fit BB's
bfuser5893539 is offline  
Reply
Old 07-03-23 | 11:03 AM
  #11  
Thread Starter
Guest
20 Anniversary
 
Joined: Dec 2004
Posts: 1,606
Likes: 1,446
Originally Posted by cpach
It would be helpful if you could describe the kind of bike it is and what chainring(s) you plan to run. BB92 usually means a mountain bike. https://jrbicycles.com/products/box-...0aAkexEALw_wcB looks good for pretty average MTB applications. You actually can't fit a Shimano road crankset because the spacing is too wide (they use BB86.5 for PF road).
Mountain bike. BB92
bfuser5893539 is offline  
Reply
Old 07-03-23 | 12:20 PM
  #12  
Full Member
 
Joined: May 2016
Posts: 220
Likes: 3
From: Europe

Bikes: Bianchi (Campagnolo) '12, Bianchi 1x11 (Sram) '15, Olmo Dynamic (Campagnolo) '11, Nishiki Road Master SS '11, Nishiki Trim Master '89, Giant TCX2 CC '12, White GX Pro (gravel) '20, White (MTB) 29", Insera Nyx 27,5", Trek Zektor Four (CC) 29"

Originally Posted by CrimsonEclipse
I meant the width. Is the width the same.
Will those cranks work with a bike using press fit BB's
Yes, if you have mtb cranks, that have longer axles. And also there are some cranks with different thickness of the axle. Shimano has 24mm axles.
Have you measured the width of the bb?

What bike do yoy have?
voor9 is offline  
Reply
Old 07-03-23 | 05:27 PM
  #13  
Thread Starter
Guest
20 Anniversary
 
Joined: Dec 2004
Posts: 1,606
Likes: 1,446
Originally Posted by voor9
Yes, if you have mtb cranks, that have longer axles. And also there are some cranks with different thickness of the axle. Shimano has 24mm axles.
Have you measured the width of the bb?

What bike do yoy have?
24mm
Although I've seen conversions to the larger spindle but It's not needed
bfuser5893539 is offline  
Reply
Old 07-04-23 | 12:37 AM
  #14  
Full Member
 
Joined: May 2016
Posts: 220
Likes: 3
From: Europe

Bikes: Bianchi (Campagnolo) '12, Bianchi 1x11 (Sram) '15, Olmo Dynamic (Campagnolo) '11, Nishiki Road Master SS '11, Nishiki Trim Master '89, Giant TCX2 CC '12, White GX Pro (gravel) '20, White (MTB) 29", Insera Nyx 27,5", Trek Zektor Four (CC) 29"

Ok. Then you just need mtb cranks 'cause they have longer axles. Unfortunately road cranks won't fit.
voor9 is offline  
Reply
Old 07-06-23 | 07:45 PM
  #15  
oldbobcat's Avatar
Senior Member
20 Anniversary
 
Joined: Jul 2005
Posts: 4,992
Likes: 710
From: Boulder County, CO

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

I refuse to get involved until OP tells us what kind of bike he's working on and what he is really trying to do to it.
oldbobcat is offline  
Reply
Old 07-07-23 | 03:57 PM
  #16  
Thread Starter
Guest
20 Anniversary
 
Joined: Dec 2004
Posts: 1,606
Likes: 1,446
Originally Posted by oldbobcat
I refuse to get involved until OP tells us what kind of bike he's working on and what he is really trying to do to it.
OH NO!!!!

Anyway....
bfuser5893539 is offline  
Reply

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



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.