Recently bought a secondhand Hollowgram crankset to lighten up my 2014 CAAD10 with Ultegra 11 speed. After the install the clearance between the crankarm and front derailleur is incredibly tight, probably under 1 mm total and I've had to dramatically adjust my FD limits to clear the crankarm, causing a lot of chainrub against the cage in the process depending on the gearing. The crankarms are also fairly close to the chainstays as well, but within 4-5mm on both crankarms which seems acceptable given the low Q-factor of the crankset. The drive-side crankarm actually came with marks on the backside that look like it's had an issue with front derailleur rub in the past. Both crankarms look to be about even/not bent when compared to their alignment with the chainstays.
Does anyone have any advice? Hollowgram SL crankset on the 104mm spindle, bearing shield only on the non-drive side. No additional shims on the drive side either, just the wave washer. Using the 34/50 compact rings transferred over from my FSA SL-K Light crankset I had on the bike previously.
I've looked around past WW posts and only found some people's concern with this cranksets clearance on the chainstays, but never seen an issue like this with the front derailleur. Is it possible the Hollowgram SL just isn't compatible with Ultegra 6800's front derailleur or is something else up?
Here's a collection of (poorly shot) images while I had it up on the stand in the local shop today: http://imgur.com/a/AIIno