Hey guys, I'm currently waiting on an open mold gravel frame from China and I have some questions about swapping parts. My current bike is a 1x Force 11. I want to switch to 2x as I ride a lot more road and just want to try it out. My question is if I can use the force 1 derailleur in a 2x setup if I turn off the clutch? I know GRX uses a clutch system now which I'm guessing is a lighter spring.
I also plan on having 700c and 650b wheelsets. Do they have to be the same size cassette? It seems like people use different size cassettes and I'm wondering how they do that. Do you also have 2 chains with a reusable quick link?
You cannot use the Force 1 derailleur on a 2x system. It is dependent on chain length to properly shift. When you shift from the big ring to the small ring it is as if the chain just got a lot longer and you will not have the correct chain wrap.
The cassettes do not have to be the same size. But if they are vastly different you will have to adjust the b-screw everytime you change wheels. Also in some rare cases if the two wheelsets have different brand hubs the cassettes may not both line up correctly with the derailleur and you will have to adjust the derailleur limit screws every time you switch wheels. This also goes for the discs. If this happens you can get some shims for the cassette or the discs that allow you to align them so they match on both wheelsets.
