Been cycling for years and 10,000's of miles. Last Sunday, long road ride on one of the tandems. 30 miles in, sharp pain down the outside of my knee. Got progressively worse during the 40mile ride home. Very, very painful dulled by considerable doses of Ibuprofen. Not a particularly hard ride though not very windy or hilly so average speed and cadence were higher than normal.
Nothing has changed on the bike. Seat height and fore/aft position same, cranks same, pedals same, cleats/shoes same (and I don't think my leg has shrunk).
I'm into R.I.C.E at the moment (might even eat the peas after :-> )but any views on what might have caused my venerable tandem to bite or how I can avoid this in the future?

