Originally Posted by ccdisce
The all carbon threadless forks may not be able to withstand the quill tightening and threading of the steerer is probably never done.
Carbon blades with threaded Al steerer is probaby the lightest way to go.
Ten years ago the rage was carbon blades with Crmoly threaded steerer examples of which are Kestrel EMS and Time Vectran and these used to weigh around 530gm ( yes I have bought them in my time).
Cinelli make a 1" quill to threadless type of stem. Profile Tech make a quill adapter to go from 1" threaded to 1 1/8 threadless both of which cost arond $20.
The combo of carbon/crmoly steerer threaded fork, quill stem and a 220 gm Al bar is the lighter of the two comparing it to carbon/crmoly steerer threaded fork, quill adapter, stem, Al handlebar. The new threadless equipment only saves weight if you go threadless all the way and use a lightweight all carbon fork something around 320 gm such as the Easton 90sl which is available in 1" steerer.
Well, the reason for going with a quill adapter was to get the versatility of the threadless style stem so I can switch lengths and flip if it if needed giving me greater flexibility in adjusting the fit initially. Personally, I think quill stems look better. There is basically no chance of changing to a threadless since the headtube is designed for 1" threaded headset/fork am I right?