I just gave you this answer In the Yahoo B forum:
I think it should work fine. I think I would add some sort of solid sheet (like
plywood, aluminium or hard plastic) in the bottom, with the exact same size as
the bottom. I would suggest you use the B basket over the Clickfix basket (I own
both) since it is sturdyer. Not much space to mowe in there but that can be good
also. A fairly tight space (and being able to lean on the solid frame) can make
the ride more comfortable than bouncing around in a big space with no rigid
"walls".
I think the basket is ok for shorter rides, on longer ones I agree with fietsbob a trailer is better.
About fietsbobs suggestion for trailer: I have a sewing machine (actually several) but I would not touch the Carry Freedom City bag and try to change it to use it for a dog. What you CAN do if you like that trailer is to just strap a box (i use a foldable one for my dog) on top of the frame.
I use the cheaper Y frame flatbed from Carry Freedom with this box:
http://www.dutchbikebits.com/index.p...product_id=221
This is the setup:
http://www.flickr.com/photos/77836183@N08/7531450774/
Edit: Take a lokk at Flickr. Several pix of dogs in B baskets there. Also some peopel have a solid box (not foldable) ziptied to a Brompton luggageframe with dog innside. Could be the best solution if you have the space to store it. Here is a solid crate I have ziptied to the older type (all metal) B luggageframe.
Brompton w B17 and front box.