Originally Posted by rosefarts

I've had several bikes with double chainrings but never triple. Every single one of them had the same BB, I think it was 109.5 or something like that. This is exclusively on Octalink V2. I've never had V1.

They were great. Stiff, reliable, simple, self extracting. Back in the day, I took them off the bike all the time. For cleaning or changing chainrings, or just because I could. I might be wrong but I really think they held up a lot better to repeated installation.

I say that but if you've ever had a crank with outboard bearing cups lake every modern crank from every modern brand, those are even better and hold up to repeated installation basically forever.

None of this should matter though. Unless the bike lives in a lab or something where the configuration is constantly being changed, a handful of uninstalls and reinstalls won't cause appreciable damage to anything. Including square taper.

Originally Posted by KCT1986

109.5mm length Octalink was probably V1, used on doubles by Shimano and the very few other brands that used Octalink.

IIRC V2 didn't have any lengths shorter than 113mm. The few Shimano road double cranks that took the V2, used the 113mm length.

The Octalink interface is quite durable if installed properly.