Will this chainset (Rotor 3D-F)

Fit in this Giant Propel frame (it’s pressfit? Soooo BB86 or something I think..):

https://www.giant-bicycles.com/en-gb/bikes/model/propel.advanced.pro.frameset/19199/77271/

Current frame is BB30 (it says it on the side!), but read somewhere the 3D-F can actually fit in other frames (maybe that’s why it looks like there’s some sort of cups on outside on current frame?).

Probably not – you’re trying to fit a crank with a 30mm spindle into a BB shell that’s 41mm diameter which means that you have only have 5.5mm for the bearings – even if you could find a bearing that size, it probably wouldn’t last that long. The cranks would however fit a frame with a regular 68mm threaded BB shell as there are external bearing cups available – the Giant has an 86mm wide shell which leaves no room for external bearings.

Brilliant thanks for the reply! Will just have to sell the Rotor and get myself a Dura Ace chainset instead 🙂

Enduro and Wheelsmfg both do BB86 pressfits to fit a 30mm axle.

The key though is the width of the Rotor 3D-F cranks. As you say, they are currently fitted to a BB30 frame but I don’t think they are BB30 cranks, as they are wider (you can see the conical spacer in the pic, I think).

BB86/92 4130

http://wheelsmfg.com/bottom-brackets/bb86-92/bb86-92-bottom-brackets/bb86-to-30mm-flanged-dual-row-pressfit-86-92-abec-3-bottom-bracket.html

Rotor do them too, by the looks of it.

Ended up just ordering a shiny new DA chainset to go with new frame, just ‘in case’ 😀 Will sell the rotor one with the frameset anyway.