Originally Posted by
Scrodzilla
Not sure what research you've done but both the
Dura Ace 7700 (Italian-threaded) and
Dura Ace 7710 (English-threaded) are sealed cartridge bottom brackets.
When is a "
sealed cartridge BB"
NOT a "
sealed cartridge BB"........... When it's a "
sealed BB"
The 7700 is needle bearing and
seals (removable for dry track) at about 170g
The 7710 is cartridge and about 250g
I can't be totally sure which I have without removing it.
EDIT: I worked it out, I've the 7710.
HERE are the 7700 maintenance instructions. If I'd had the 7700, I would be able to see the separate lock ring on the NDS. I have no lock ring.
Here try
this
Like I said... I really don't need the DA or even the Ultrgra (if I could find one) I think the 105 will be just fine for me.
Barry