Head tube diameter?

[Animal80]

Hi

Got a Rail 5
Anybody now the insaid diameter of the head tube.?
Top and bottom.

 

[Doug Stampfer]

For the bearing? Theres a bearing spec on the headset thread

 

[Animal80]

For the bearing? Theres a bearing spec on the headset thread

Hi
No, not for the bearings.
But for the headset cups.
Frame measurements.

 

[Doug Stampfer]

. You've munted your headset cups??? Woah I want to see pics!

 

[Animal80]

. You've munted your headset cups??? Woah I want to see pics!

I havent mounted anything yet, just want to now the inside measurements for the head sett. ✌

 

[Doug Stampfer]

I havent mounted anything yet, just want to now the inside measurements for the head sett. ✌

Sorry, miscommunication - munted over here means broken or damaged. I thought you must have done major damage to your headset & was curious to see the result.

 

[Philly G]

Hi
No, not for the bearings.
But for the headset cups.
Frame measurements.

There are no headset cups...the Rails have integrated headsets meaning the bearings drop straight into the frame...

 

[Animal80]

There are no headset cups...the Rails have integrated headsets meaning the bearings drop straight into the frame...

Hi
Thanx, yes thats right. Just noticed it when taking the fork off..

 

[Philly G]

Here are the bearing sizes, if you want them, I believe the Cane Creek Hellbender series will fit if you're after something of higer quality, but if you slap plenty of marine grease around the oem bearings last quite well

FSA 1.5" Lower Headset Bearing - Trek Bikes (NZ)

www.trekbikes.com

FSA 1-1/8" Upper Headset Bearing - Trek Bikes (NZ)

www.trekbikes.com

 

[Doug Stampfer]

Here are the bearing sizes, if you want them, I believe the Cane Creek Hellbender series will fit if you're after something of higer quality, but if you slap plenty of marine grease around the oem bearings last quite well

FSA 1.5" Lower Headset Bearing - Trek Bikes (NZ)

www.trekbikes.com

FSA 1-1/8" Upper Headset Bearing - Trek Bikes (NZ)

www.trekbikes.com

They must have changed the top bearing since our ones were built as the one pictured is the same the new one I got. The one it replaced was similar to the bottom bearing with no seal on the bottom

 

[Philly G]

They must have changed the top bearing since our ones were built as the one pictured is the same the new one I got. The one it replaced was similar to the bottom bearing with no seal on the bottom

Is your new bearing FSA or something else?

 

[Doug Stampfer]

Not sure. It does look like the FSA bearing you posted.