slomo
Devout Dirtbag
So i have one of those early 90's Rockhoppers that (it seems) Specialized decided to use all the weird sizes.....
73mm bottom bracket.
JIS heatset.
Although JIS headsets are still available, the variety is diminishing.
Ideally i would like a black headset with cartridge bearings - which would be so much easier if the headset were ISO.
Has anyone had the adaptation done?
My understanding is that this involves increasing the headtube ID by 0.2mm and reducing the crown race 'shoulder' by 0.4mm.
Any help greatly appreciated.
73mm bottom bracket.
JIS heatset.
Although JIS headsets are still available, the variety is diminishing.
Ideally i would like a black headset with cartridge bearings - which would be so much easier if the headset were ISO.
Has anyone had the adaptation done?
My understanding is that this involves increasing the headtube ID by 0.2mm and reducing the crown race 'shoulder' by 0.4mm.
Any help greatly appreciated.