Hi hope all are good.... I have an old Jeunet french bike that i want to change the headset in...
I see in my search that really as long as i have the french threaded locknuts I can use say Italian races..?
i before i try it would just like to know if this will work....


thank for any and all info

rc

You also need the adjustable cup in the correct thread, then all the race/tube/seat diameters have to sync. And it's best to use the correct washer between the locknut & the adj cup.
Or file off the tab, if that's the washer you will be using.

Hi thanks for the info... I have the threaded adjustable race, spacer and top locknut....
I think i see what you mean and what i need so thanks a ton...
i have a spare headset (english) and would rather use what i can from it instead of buying all new when it is new..
again

thanks a ton for the info

rc

One possibility. If the original headset has a bad lower cup race and crown race (these are usually the first parts to be damaged beyond use) but the top cup and races are still ok, you could just replace the lower cup and crown race and keep the upper assembly. That avoids the threading issues.