Old 10-17-07, 01:47 PM
  #21  
Sammyboy
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Join Date: Jul 2005
Location: Southampton, UK
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Bikes: Gazelle Trim Trophy, EG Bates Track Bike, HR Bates Cantiflex bike, Nigel Dean fixed gear conversion, Raleigh Royal, Falcon Westminster.

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It's most likely that your rack is flexing around. Also affecting the matter is the placement of the load - putting a rucksack on top of the rack will cause a lot more instability than putting it on a pannier on the side, much lower. I would consider getting one of the rucksack/pannier combination things, so that you can get the benefits of positioning of a pannier, and still throw it on your back when you get to work. On my 700c bikes, I always carry heavy loads on the side, and it doesn't cause me noticeable problems. On my Raleigh 20, I use a rack top briefcase, but I'm perched so far above it that I suspect it works out about the same!
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