Trouble finding crankset with Q-factor of 180 mm / Boost Standard compatible

[chrstephan]

Hey, I am building a Nordest Britango Ti in size M/L (Boost Standard) and I have some trouble finding a suitable crankset. I installed Raceface Aeffect R cranks with a 137 mm spindle and a Q-Factor of 177 mm but the chainstay clearance seems to be too low (~2 mm) on the drive side. I could not test ride the bike with the raceface cranks but I think there will be too much flexing in the frame/cranks when loading up the bike for bikepacking.

I am using a Hope BSA 73 mm bottom bracket for 24 mm spindles. The Ti frame requires a Q-Factor larger than 175 mm. Can you recommend any cranksets that have a greater chainstay clearance (180 mm Q-Factor maybe?) and are still compatible for a chainline of 51/52 mm?

Cheers,

chr