Andy in Germany
Guru
- Location
- Rottenburg am Neckar
No need. You are replacing the complete chainset. (Stick, wrong, end of, Dave)
The one you are putting on [edit: maybe] looks like a biopace (ovalised rings) so take care to set the FD cage at the correct height for the large diameter.
Also you don't know if the BB spindle length needed by the new chainset is the same as for the current one, so your chainline may not be quite the same. It's possible the FD will not 'reach', but I'd fit it and see (unscrew limit screws) manipulating by hand. Also check how close the (new) inner ring is to the chainstay.
That confirms I understood it now, but as you say I plan to replace the entire unit. I don't think it's a biospace; I've got several biospace rings and they're generally distinctive, but I'll check tomorrow.