I have a Topeak Super Tourist Tubular Rack (w/ spring) that I was using on my Schwinn:



I just bought an Adams Trail-a-Bike for my son, and I'm wondering if this rack would work over its 20" wheel since I won't fit on the tow bike anymore:




The bike has braze-ons on the seatstays and eyelets on the dropouts, but I worry that the rack would be too tall. I don't plan to load it up with heavy panniers but a nice picnic lunch from time to time would be nice, or a bag to pick up some quick groceries, yard sale finds, etc. Any suggestions?

Also, can anyone recommend a nice 20" fender to match my Schwinn's PB Cascadias?