Is-2 Headset install? Should I be able to see the bearings after its installed?

[Chillout]

I did a trial integrated headset install on my zaskar gt frame yesterday and was wondering if I have the right size and if it's suppose to sit like this? Sorry about the lighting, it's in my basement with my cellphone, if needed I can get better pics in the am.


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[Chillout]

Anybody have an idea?


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[shiggy]

Does not look right.
According to the Cane Creek fit finder you need an IS41 headset. There are also IS38 (rare) and IS42 versions. The angle of the tapered bearing seats are different.

[Chillout]

Thanks for the info. Sucks cause I bought two of these from eBay assuming they were the right one... Now I gotta search cane creek. Do I need to remove the fsa crown race from my fork or are they the same for cane creek? Thanks

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[Bike Whisperer]

Orbit IS-2 is the correct 41mm size and correct 36/45 bearings but I agree it doesn't look right. Make sure the bearings are correct and not 45/45 (generally printed on the outside).

[shiggy]

Orbit IS-2 is the correct 41mm size and correct 36/45 bearings but I agree it doesn't look right. Make sure the bearings are correct and not 45/45 (generally printed on the outside).

FSA does offer the Orbit in both sizes.

[shiggy]

Thanks for the info. Sucks cause I bought two of these from eBay assuming they were the right one... Now I gotta search cane creek. Do I need to remove the fsa crown race from my fork or are they the same for cane creek? Thanks

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Crown races are not usually interchangeable between brands, or even different models of the same brand. Not just if the taper is correct for the bearing but having the proper shape/height to clear the bottom bearing/cup.

[Chillout]

Well it is a 36/45, the bottom fits fine but the top is shallower.


Here is the top of the head tube.


The bottom of the headtube.


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[shiggy]

Well it is a 36/45, the bottom fits fine but the top is shallower.


Here is the top of the head tube.


The bottom of the headtube.


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The top looks a bit shallow. Spec is 3.2mm to the top edge of the taper.

Since the bearing is correct, it should not be a big issue.

[Chillout]

Any idea if I can just swap the top bearing for a shallower one and still use the headset correctly or do I need a whole different setup to get rid of the gap? I'd rather not have an opening for dirt to get in if possible. Thank you, Merry Christmas.

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[shiggy]

Any idea if I can just swap the top bearing for a shallower one and still use the headset correctly or do I need a whole different setup to get rid of the gap? I'd rather not have an opening for dirt to get in if possible. Thank you, Merry Christmas.

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You are going to have a gap regardless of the headset/bearing you use.

[Bike Whisperer]

FSA does offer the Orbit in both sizes.

The Orbit name is used by FSA for multiple headset types and sizes...However the OP asked specifically about the FSA IS2 which ONLY comes in 41.0mm.

[Chillout]

Is the gap present on stock gt zaskars from the factory? Seems odd that there's not a better fitting option.

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