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1″ to 1 1/8″ headset. Is it possible?

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1″ to 1 1/8″ headset. Is it possible?

Old 09-16-20, 01:01 AM
  #26  
Germany_chris
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If you want to convert a 1" quill to use 1 1/8 threadless stems @joejack951 sells a headset (innicycle) to do just that and looks far better than quill adapters.


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Old 09-16-20, 06:12 AM
  #27  
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Originally Posted by mack_turtle View Post
I just discovered this thing: (link removed) it does not quite adapt a frame with a smaller head tube to accept a fork that can't realistically fit in it, but it does a much better job of making a clean conversion to a modern threadless fork.
the bike in this video uses it
https://www.youtube.com/watch?v=8sdjSzAG9lc
YouTube user Old Shovel did use an innicycle headset for his gravel bike conversion (purchased at full retail through Amazon at the time). However, the link above (removed) is not a legitimate store offering the product. If anyone may be interested, please contact me directly or follow this thread in C&V: https://www.bikeforums.net/classic-v...n-headset.html
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Old 09-16-20, 01:57 PM
  #28  
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Originally Posted by Adis View Post
Ok, I measured the head tube. Is this a big no?

It's a big fat no. The bottom of a 1-1/8" steerer tube where the crown race is pressed on would be press fit into your frame. There is literally zero space available for a headset.

At the top, there is 1.4mm space (0.7mm per side) between the OD of the fork and ID of the frame. The headset is usually pressed in to a part of the frame that is bored more thin than the rest of the head tube, so the thicker head tube wall away from the headset will probably not allow a 1-1/8" fork. It is impossible.
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Old 09-16-20, 03:14 PM
  #29  
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To all of us, the answer is no you can't put a fork with a 1-1/8" steerer tube in a head tube and headset meant for a fork with a 1" steerer tube. At least not easily and not without a lot more skill and knowledge than you are showing to us. Sorry if that hurts. But face it.

Now there is an off chance that you have something that is slightly out of the ordinary and maybe if we knew what that was, we might change our tune.

So what bike exactly do you have and what exact fork are you wanting to put in it.

And why? Knowing why and what you are ultimately trying to solve might get you some better suggestions for another way to go about achieving the end result you want. Might be you don't need to try and make a 1 1/8" fork fit a 1" headset.
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Old 09-17-20, 07:08 PM
  #30  
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Originally Posted by mack_turtle View Post
I just discovered this thing: https://www.bikeforums.net/classic-v...n-headset.html it does not quite adapt a frame with a smaller head tube to accept a fork that can't realistically fit in it, but it does a much better job of making a clean conversion to a modern threadless fork.
the bike in this video uses it
https://www.youtube.com/watch?v=8sdjSzAG9lc
Yep, joejack951 's super-nifty conversion unit is the ultimate. Nails it.
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