oldandslow
Guru
I'm not very good at cleaning my bikes. The OP mentioned a Brompton - I do that when I think I might not be allowed in the office if I don't.
Which reminds me...
Which reminds me...
My LBS commented the other day that they see a lot more bottom bracket issues these days. Brought about by the high level of degreaser use.
His theory is people aren't careful with it. Slapped all over the chain rings etc. then being blasted off with a hose perhaps?Interesting, I wonder how degreaser gets near a bottom bracket? I could more imagine high pressure washers being problematic if not carefully directed.
Brompton owners are often terrible for neglecting their bikes. Things have improved a bit with the move to better rims, but they used to be really soft alu. The back rim in particular would get filthy from spray off the front tyre and the brake blocks would capture grit and wear the rim to death. Exploding rims was a very common event. The worst i ever saw was the Sustrans Head Office pool bike. That poor thing was just ridden into the ground.
His theory is people aren't careful with it. Slapped all over the chain rings etc. then being blasted off with a hose perhaps?
Next time I'm in I'll ask the question. I just accepted the professional view without much thought.
Maybe using a power washer with one of those attachments that sprays foam all the thing you are washing??

Another here who says life is too short to wax a chain. @mickle method is all you need to keep a chain nice, clean and working well.
I like to keep all my bikes nice and clean as a matter of course. Not only do they run/ride better. When you are cleaning bikes regularly you do become a little more aware of any impending problems or issues.