Overdrive fork in ZS44 headtube?

[The Dude]

Anyone know of a headset that will allow me to install an Overdrive fork (1 1/4" to 1 1/2" - tapered) into a frame with a 44mm top head tube ID?
Or can I run a ZS44 headset with a specific bearing to fit the steerer?

 

[teK--]

FSA make one with a 1.25 top cup/bearing. It is the stock headset they used in the Giants.

 

[waffleShirt]

teK beat me to it. Your local giant dealer should have in stock the Giant brand (aka, FSA rebranded) OD2 headsets. From memory they are a regular ZS44/56 headset with a larger ID top bearing. You may be able to get something from the Hope Pick N Mix range or Superstar components as well.

Have you already got a 1-1/2 headstem to go with the fork?

 

[ChrisJC]

https://www.mountainbikesdirect.com.au/gp-headset-bearing-set-giant-od2-mountain-top-and#description

 

[link1896]

here is a example of best practice

 

[Oddjob]

here is a example of best practice

Wtf?

Sent from my SM-G900I using Tapatalk

 

[waffleShirt]

here is a example of best practice

So then The Dude is going to have a straight 1.25" steerer, increasing the difficulty in finding a headset to the most extreme degree. I like it. Maybe that will be the Giant OD3 standard.

 

[The Dude]

teK beat me to it. Your local giant dealer should have in stock the Giant brand (aka, FSA rebranded) OD2 headsets. From memory they are a regular ZS44/56 headset with a larger ID top bearing. You may be able to get something from the Hope Pick N Mix range or Superstar components as well.

Have you already got a 1-1/2 headstem to go with the fork?

Thanks gentlemen.
Yes, the stem is also from a Giant. Just a frame swap, actually

 

[The Dude]

https://www.mountainbikesdirect.com.au/gp-headset-bearing-set-giant-od2-mountain-top-and#description

Thanks Jebus! I'll check those out; But I think I'd need a new top cap as well, so I will probably be better off with a new headset

 

[The Dude]

Wtf?

Sent from my SM-G900I using Tapatalk

As well as an instant lobotomy, he'll have to deal with Giant/Trek/Specialized lawsuits for stealing their "unnecessary-new-standards-we-can-force-upon-the-lemmings" thunder!

 

[The Duckmeister]

Is it a straight or tapered head tube? If it's tapered standard 44/56, the aforementioned Giant/FSA set will drop straight in; to fit the fatter upper steerer the top bearing is a "slimline" design, but it's about 1mm larger in diameter than a regular bearing, so won't fit a standard cup; the necessary cup has a thinner wall to enable it to fit in the standard 44mm tube.

 

[moorey]

Ps, overdrive is standard taper.
Overdrive 2 is 1 1/2- 1 1/4. I’m nitpicking.

 

[The Duckmeister]

Ps, overdrive is standard taper.
Overdrive 2 is 1 1/2- 1 1/4. I’m nitpicking.

Beat me to it.