Hi all,

I have just go hold of a Cannnondale Scalpel frame and am in the process of building it up.

A few things are giving me headaches, the biggest of which is that the chain rubbing the top of the chainstay when in the smallest cog. Surely this can’t be right?

I can only think a bigger front ring might help raise the chain a little but it would be daft if a 34T ring is the smallest that can be run- what about the Hollowgram doubles with smaller rings, how does the chain not rub the chainstay then?

I am sure there is a simple solution I am missing! Can anyone help please?

Thank in advance, DanW 😀

P.S. Extra info:
32T single front ring
Rotor 3D (triple cranks running the single ring in the middle ring position)
Cannondale bearings
Wheelsmfg BB30 to 24mm adapters
Xt/ XTR 11-36 10 speed cassette

I ride a 2011 Scalpel with XX rear mech and 36 front ring an a 1×10.
When in the 11t on the cassette, the chain is a few mm above the chain-stay. The gap increases when you sit on the bike due to the flexy stays.

I don’t run a clutch mech so occasionally I get a little chain rub on the say – a neoprene stay cover prevented this from causing damage.

It wont rub when your weight is compressing the rear end of the bike.

Fair enough, I thought I must be missing something obvious!

Next problem is trying to get the chain line/ crank spacing correct. With the Rotor cranks fitted as per the instructions (with rgards to the spacers used) the 32T front ring is only a mm or so from the metal chainsuck plate and the chainguide rubs the inside of the chain. I have had to swap the Rotor spacers around so the DS has the thicker spacer to set the DS crank further out and away from the frame. Hmm….