Tongfamily.com

Cannondale Bicycle Corp. – Si Hollowgram Cranks. My buddy dave has these proprietary cranks on his Cannondale. They are nice but as with all proprietary designs, you can’t interchange them. Now he wants a Campagnolo Record CT crankset for our middle-aged legs, so the question is how do you get the darn things off. What tools do you need.

Also, I presume that the frame itself is English internally so you can just put the Record cranks and bottom bracket on, but it isn’t clear to me.

They have manual for the Si Hollowgram and it makes it seem very hard to remove and replace the bottom bracket. Requires a host of special tools. Arrgh. I hate proprietary stuff!

Seems like someone at a shop needs to do this. Well beyond me as I read it.