Know the rules The Paceline Forum Builder's Spotlight


Go Back   The Paceline Forum > General Discussion

Reply
 
Thread Tools Display Modes
  #1  
Old 01-09-2020, 09:45 AM
XXtwindad XXtwindad is online now
Senior Member
 
Join Date: Nov 2017
Posts: 8,004
44mm head tube versus 1 1/8.

I realize there might have been a thread on this before, so apologies for any redundancies. Contemplating the build for the last bike I'll every buy (for myself) It will most likely be a very light steel bike. Columbus Spirit, probably.

Does a bigger (44mm) head tube negate the weight savings of a lighter steel bike? I've heard that several times. I'm also aware that the conventional thinking is that is makes the bike much stiffer on the front end.

Any thoughts would be appreciated.
Reply With Quote
  #2  
Old 01-09-2020, 09:59 AM
Clean39T Clean39T is offline
Senior Member
 
Join Date: Jan 2017
Location: Portland, OR
Posts: 19,292
If you're doing really oversized steel tubing (downtube) and a carbon fork, and looking for maximum stiffness, then sure, go with the 44HT.

But if you're going for a dreamy steel ride, get a sweet steel fork on there and keep the smaller headtube diameter and the other tubes more reasonably sized.

Check out AndySTI's Alliance for an example of a Spirit bike that splits the difference and looks the business.
__________________
Io non posso vivere senza la mia strada e la mia bici -- DP
Reply With Quote
  #3  
Old 01-09-2020, 10:03 AM
XXtwindad XXtwindad is online now
Senior Member
 
Join Date: Nov 2017
Posts: 8,004
Quote:
Originally Posted by Clean39T View Post
If you're doing really oversized steel tubing (downtube) and a carbon fork, and looking for maximum stiffness, then sure, go with the 44HT.

But if you're going for a dreamy steel ride, get a sweet steel fork on there and keep the smaller headtube diameter and the other tubes more reasonably sized.

Check out AndySTI's Alliance for an example of a Spirit bike that splits the difference and looks the business.
Haha. I know. Thanks. That was the inspiration for the steel bike. Also, his bike was the inspiration for my Ti All-Road bike. Np plans for a tandem bike, Andy? Good
Reply With Quote
  #4  
Old 01-09-2020, 10:05 AM
unterhausen unterhausen is offline
Randomhead
 
Join Date: Dec 2013
Location: Happy Valley, Pennsylvania
Posts: 6,950
steel fork or carbon? I wouldn't put a 44 ht on a frame built for a steel fork unless weight is no problem. I know people have done it, just my preference.

I used to really hate the look of 44mm ht, but now there are numerous tapered ht available that don't look bad
Reply With Quote
  #5  
Old 01-09-2020, 10:05 AM
charliedid's Avatar
charliedid charliedid is offline
Senior Member
 
Join Date: Mar 2010
Location: Chicago
Posts: 12,913
Quote:
Originally Posted by XXtwindad View Post
I realize there might have been a thread on this before, so apologies for any redundancies. Contemplating the build for the last bike I'll every buy (for myself) It will most likely be a very light steel bike. Columbus Spirit, probably.

Does a bigger (44mm) head tube negate the weight savings of a lighter steel bike? I've heard that several times. I'm also aware that the conventional thinking is that is makes the bike much stiffer on the front end.

Any thoughts would be appreciated.
It looks better with chubby carbon forks.

Stiffer schmiffer.
Reply With Quote
  #6  
Old 01-09-2020, 10:08 AM
XXtwindad XXtwindad is online now
Senior Member
 
Join Date: Nov 2017
Posts: 8,004
Quote:
Originally Posted by charliedid View Post
It looks better with chubby carbon forks.

Stiffer schmiffer.
What looks better with chubby carbon forks?
Reply With Quote
  #7  
Old 01-09-2020, 10:13 AM
charliedid's Avatar
charliedid charliedid is offline
Senior Member
 
Join Date: Mar 2010
Location: Chicago
Posts: 12,913
Quote:
Originally Posted by XXtwindad View Post
What looks better with chubby carbon forks?
Sorry 44
Reply With Quote
  #8  
Old 01-09-2020, 10:30 AM
FlashUNC FlashUNC is offline
Senior Member
 
Join Date: Apr 2008
Location: Berkeley, CA
Posts: 14,452
No need for a 44mm headtube with Spirit. Plenty stiff as is.
Reply With Quote
  #9  
Old 01-09-2020, 12:09 PM
false_Aest's Avatar
false_Aest false_Aest is offline
Princess Sweat
 
Join Date: Mar 2008
Location: Los Angeles
Posts: 4,027
I'm going to assume that you're going with rim brakes.
If so, 1.125" is great.
If not, there is an ever decreasing amount of forks that are 1.125 disc.

Same with through-axle.
__________________
IG: elysianbikeco
Reply With Quote
  #10  
Old 01-09-2020, 01:56 PM
Mark McM Mark McM is offline
Senior Member
 
Join Date: Jun 2006
Posts: 11,987
I doubt that a 44mm head tube adds much stiffness to the frame over a 1 1/8" head tube*. The reason is because the load paths between the headset bearings and the top tube and downtube are very short, with little of the loading passing along the length of the headtube. The added stiffness comes from the tapered fork that fits into the 44mm head tube.

*Unless the head tube is exceptionally long

Last edited by Mark McM; 01-09-2020 at 01:59 PM.
Reply With Quote
  #11  
Old 01-09-2020, 02:04 PM
Kirk007 Kirk007 is offline
formerly Landshark_98
 
Join Date: Jan 2007
Location: Bainbridge Island WA
Posts: 4,793
Steel bike I'd go 1 1/8 particularly rim brake. I will say that I think my 333FAB ALS, which uses a tapered headtube, looks ok with the steel pipes but its also built to be a burly quasi dropbar mountain/bike packing 650b/47mm tire bike. I also think the endless quest for front end stiffness is over the top for most applications, starting with overbuilt carbon forks.

Last edited by Kirk007; 01-09-2020 at 02:07 PM.
Reply With Quote
  #12  
Old 01-09-2020, 02:04 PM
prototoast prototoast is online now
Senior Member
 
Join Date: Jun 2016
Location: Concord, CA
Posts: 5,842
Quote:
Originally Posted by Mark McM View Post
I doubt that a 44mm head tube adds much stiffness to the frame over a 1 1/8" head tube*. The reason is because the load paths between the headset bearings and the top tube and downtube are very short, with little of the loading passing along the length of the headtube. The added stiffness comes from the tapered fork that fits into the 44mm head tube.

*Unless the head tube is exceptionally long
The stiffness doesn't come from the head tube itself, the stiffness comes from being able to use a tapered fork, and a larger diameter downtube.
__________________
Instagram - DannAdore Bicycles
Reply With Quote
  #13  
Old 01-09-2020, 03:17 PM
joosttx's Avatar
joosttx joosttx is offline
Senior Member
 
Join Date: Feb 2010
Location: Larkspur, Ca
Posts: 7,995
Quote:
Originally Posted by FlashUNC View Post
No need for a 44mm headtube with Spirit. Plenty stiff as is.
I would copy Flash’s choices. He got the steel bike thing dialed.
__________________
***IG: mttamgrams***
Reply With Quote
  #14  
Old 01-09-2020, 04:13 PM
tuscanyswe tuscanyswe is offline
Senior Member
 
Join Date: Mar 2008
Posts: 8,971
If not disc then 11/8 imo.
Reply With Quote
  #15  
Old 01-09-2020, 04:16 PM
Themountaintop Themountaintop is offline
Senior Member
 
Join Date: Jan 2020
Location: Marin.
Posts: 266
As previously noted Spirit is a stiff steel, If you're going disc brakes then sure 44 is probably better. If you're going traditional you probably don't need the 44 diameter head tube.
Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump


All times are GMT -5. The time now is 06:49 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.