I would doubt you would normally get more than than 150g difference between threaded and threadless headset, steerer and stem combinations with steel steerers. The steerer is a little longer and cannot be significantly thinner than threaded ones as it has to resist crushing... The headset will be more or less the same weightwise. Typical threadless stems weigh in between 150 and 200g compared to 220 to 300g for stems for threaded steerers. The significant weight savings are made when carbon-fibre forks with carbon-fibre steerers are used, all off topic of course. With these 250 to 300g can be saved compared to a steel fork.
Hilary Stone, Bristol, England
Kurt Sperry wrote:
> On 3/2/07, Bianca Pratorius <biankita@comcast.net> wrote:
>>
>> I believe that the newer tubing is about a pound lighter than the older
>> light steel tubing sets. The way that they get the build up of the 953
>> tubing to have such a low final weight is not just because the 953 is
>> inherently lighter but also because you save about a pound ( I am told)
>> using the threadless headsets of the newer design.
>
>
>
> I doubt there's any way anything close to a pound could be lost between
> threaded and threadless HSs on KOF bikes assuming both were engineered with
> light weight as a priority.
> Is the steerer supposed to be massively lighter, or is this assuming the
> stem will necessarily be? Or...?
>
> Kurt Sperry
> Bellingham WA USA