Originally Posted by
gohabsgo
You are the experts. I will check the back of the RD but I am sure that you are correct. I found a link for a 'printer ready' spec sheet which was easier to read (bigger) for these aging eyes and it shows 5600.
So ... assuming it is a 5600, is the 28T within spec and can I make it work with the 28T rear and 34T front?
Thanks.
The expert WRT a bike's spec is the person owning the bike. My comment about pushing a component's capacity to it's limits (or slightly beyond) relates to your question of "can I make it work"?
IIRC the 5600, short cage, rear der has a 27T cog max spec. and a wrap of about 29T. The 11-28 cassette and the 34-"50" (not yet mentioned but assumed as is the typical compact crank set up) both exceeds the cog size and the wrap ( at 33T). So will it work, sure but there can be some issues that might crop up.
The rear der's ability to wrap the chain in every combo might not work, however limiting the actual combos in use can mitigate this. Pulley knock can happen. But trial and error chain length choice and "B" screw adjustment can also work around this.
So my answer is sure it can work but with more set up discovery and solving as well as some rider shifting behavior limits. Andy.