benshares

Hi!

I'm building up a CAAD12 Frameset, and am doing a full 105 group. I found these adapters online (BBright, BB30a & PF30a Adapter for 24mm Spindle Cranks (Shimano, FSA, etc.)) and the shims popped in perfectly, but once I installed the crankset, there's a good amount of extra spindle length! See attached photo. The cranks slide back and forth if I push them.



It looks like the shims might be too small? That this is some sort of CAAD12 that has a shorter BB shell? I am really stumped.

The shims did come with a whole bunch of 24mm delrin spacers, so I COULD just center the cranks and fill that extra space on the non-drive side with spacers... bad idea?

Thoughts?

gsa103

That's the whole point of the giant stack of delrin spacers.

It looks like you need more spacers on the drive side as well.
1) Add spacers to drive side until the chainrings are centered on the cassette.
2) Add spacers to non-drive side to fill the remaining gap.

Tunnelrat81

I think the first reply is the answer. I see that the Wheels Mfg kit you are using has two shouldered spacers that are asymmetrical. Assuming that you have the two shouldered spacers installed on your bike in the picture (I can't tell from the picture because the flatter one isn't showing), the only thing left to do is to make up the difference with the provided flat spacers.

-Jeremy

benshares

Yep, I have the shouldered spacers sitting under the shims, and then I can make up the space with the 24mm flat spacers - It makes logical sense to me, I just wanted to make sure I wasn't missing anything! Thanks for clearing it up. As for the comment about drive-side spacers needed - I have it spaced now so that the crankarms are equally spaced from the chainstays (the chainring looks a LOT closer to the chainstay in the picture than it is in reality - is that right?