Maintenance, right... chain lubing is the most frequent, chain and cassette replacement, brake block replacement (and more frequent re-adjustment), occasional bearing regrease, Swift has a notched headset which will need replacing. The R20's rear hub is the biggest bugbear so far - broken planet gear and endless lubing trouble, bearings rust, and of course the ongoing adjustment sensitivity.

Chains are the biggie. My Swift's chain wore a huge amount in the 420km Opperman trial, since it rained for 12h non-stop and chains can't handle wet conditions especially with dry lube which easily gets replaced by wet road grit as you pedal on wet roads. Basically it went from no wear detected to a throw-away job in one ride. I think if I had a thick greasy lube on it it might have lasted better under those conditions.

Ah, and occasional tyre replacement. So far none from complete wear-out; two from huge cuts and two from carcass failure.

I get the occasional creak from the Yeah but no biggie. The Yeah also has the older style Dahon latches which don't go out of adjustment so easily and regularly.