The Stiffee hasn’t had much use recently, partly because the last two times I rode it in anger it suffered badly from chainsuck to the point that the chain got jammed above the chainstay and needed to be split and rejoined to free it. Given that this takes ten minutes or so to fix it’s not an ideal situation. The problem is that thanks to the generous tyre clearance and beefy chainstays, there is just enough room between the middle chainring and the chainstay to squeeze a chain through, but not enough room to get it out again. I have various plans to alleviate the problem, and today was the chance of the "free" one.
The Deore cranks and BB were removed and replaced with RaceFace Prodigy cranks and a RaceRace BB from the Craftworks. The ISIS BB is adjustable so that I can move the chainset out a bit to give more clearance. I also swapped the beefy 34T chainring for a more slender 32T one which should also give a bit more room.
If this doesn’t work the next step is to "upgrade" to a nine-speed drivetrain, it’s not strictly necessary, but if I’m replacing the chain and cassette anyway it seems silly not to get new shifters as well for not much more money.
Whilst I was waving my tools around, I also replaced the front mech on the cross bike with a 9spd one which will hopefully sort out the dodgy front shifting.