Just a quick update on the Monkii Gorilla cage... I put it on my XTC a couple of weeks ago, the fuller information on the bike (and rides) is here:
http://www.thorncycles.co.uk/forums/index.php?topic=10723.msg78067;topicseen#msg78067The Gorilla is ace, many thanks to Bobs who first brought it to my attention. It cost me over £20 quid but well worth it. I mounted ut on the down tube with just 2 bosses and carried a 1kg tent plus Zefal pump in it. Remained rock-solid over 180 miles on tarmac and some rough roads too. In hindsight, I would have specified a third cage boss before the bike was painted. Oh well.
The plastic frame of the cage is not very stiff so without the third boss it rests on the down tube, but I put a bit of vinyl film where it touches the frame to prevent it rubbing off the enamel.
I would think it's perfectly capable of supporting up to 1.5kg with two bosses, as per its spec. With three it might handle even more.
Yet to see how it performs over months/years to come. There's little to go wrong, if anything the mounting system may become less tight with time. I'll watch that and update the thread should anything to wrong. So far seems bang on.