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Integrated Headsets(5 posts)

Integrated Headsetsdenti
Nov 8, 2001 7:29 PM
Will any integrated headset fit into any frame designed for that type of headset? Such as Cane Creek, FSA, etc.
Integrated Headsets...not a real "standard"Calvin Jones-Park Tool
Nov 9, 2001 6:24 AM
The term integrated headset is generally being used as a broad term to any of the bearing-in-the-headtube designs. The common design seems to be a nominal 41mm headtube inside diameter with a 45 degree seat machined into the frame. This acts as the "cup". However, there is a less a less common seat of 36 degree seats, which FSA also makes bearings for.

The Zero Stack is a system used by Cane Creek as well, and is called "integrated" by some. FSA makes an "Obritz Z" in a similar design. However, this system has pressed frame cups which acts as the bearing seats. The frame does not have the sophisticated machining of the integrated headsets described above. This system is not really "integrated" into the frame.

Campagnolo has their own "integrated" desgined, call Hidden Set. This system is unique to Campagnolo, and is not interchangeable with other designs. The frames are machined to accept this design and this design only.

If your frame has the machined seats, it is very likely to be the 45 degree standard, assuming your headset is not Campagnolo. Just make sure the headset you are getting will fit the 45 degree standard. There are often two numbers printed on the bearings, such as 36 x 45. The first number is the inner race angle, which is 36 degrees. This is the part of the race that meets the split sleeve either at the fork or the top, and everyone I know of uses 36 degrees here. The second number is the outer bearing seat angle. A 36 x 36 is the less common standard.

You can use different brands, but they may not fit the same in terms of height in the frame. It is sometimes necessary to use thin washers above the top bearing and sleeve to insure the top cap does not grind against the frame. Although the 45 degree seat is becoming widely accepted, the depth of the seats are still varied.
Integrated Headsets...not a real "standard"denti
Nov 10, 2001 3:27 PM
thankx Clavin, mine must be 36 degrees it came with a FSA 36 degree ACB headset once again thanx.
Caution: 36 degree is still uncommonCalvin Jones-Park Tool
Nov 13, 2001 6:00 AM
Have a look at the bearing for the numbers, either 36 x 45 or 36 x 36. I would also recommend checking with the frame manufacturer.
Perdido - Chris Kingmookeyman
Nov 13, 2001 8:00 PM
Chris King is attempting to create a standard with its Perdido headset( The specs are posted for all to use. They had great success with the ISIS standard for bottom brackets when they joined Truvativ and Raceface.